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-rw-r--r--gcc/lto/ChangeLog3421
-rw-r--r--gcc/lto/Make-lang.in94
-rw-r--r--gcc/lto/common.c46
-rw-r--r--gcc/lto/common.h34
-rw-r--r--gcc/lto/config-lang.in35
-rw-r--r--gcc/lto/lang-specs.h24
-rw-r--r--gcc/lto/lang.opt43
-rw-r--r--gcc/lto/lto-lang.c1269
-rw-r--r--gcc/lto/lto-object.c368
-rw-r--r--gcc/lto/lto-tree.h58
-rw-r--r--gcc/lto/lto.c2489
-rw-r--r--gcc/lto/lto.h63
12 files changed, 7944 insertions, 0 deletions
diff --git a/gcc/lto/ChangeLog b/gcc/lto/ChangeLog
new file mode 100644
index 000000000..c3b726a9f
--- /dev/null
+++ b/gcc/lto/ChangeLog
@@ -0,0 +1,3421 @@
+2013-04-12 Release Manager
+
+ * GCC 4.6.4 released.
+
+2012-04-23 Peter Bergner <bergner@vnet.ibm.com>
+
+ Backport from mainline
+ 2011-06-11 Jan Hubicka <jh@suse.cz>
+
+ PR lto/48246
+ * lto.c (lto_1_to_1_map): Don't create empty partitions.
+ (lto_balanced_map): Likewise.
+
+2012-03-01 Release Manager
+
+ * GCC 4.6.3 released.
+
+2011-12-13 Eric Botcazou <ebotcazou@adacore.com>
+
+ * lto.h (lto_parse_hex): Delete.
+ * lto.c (lto_read_decls): Use 'int' for offsets.
+ (lto_parse_hex): Make static and return proper 64-bit host type.
+ (lto_resolution_read): Use proper 64-bit host type.
+
+2011-10-26 Release Manager
+
+ * GCC 4.6.2 released.
+
+2011-06-27 Release Manager
+
+ * GCC 4.6.1 released.
+
+2011-03-31 Richard Guenther <rguenther@suse.de>
+
+ PR lto/48246
+ * lto.c (lto_wpa_write_files): Disable assert for non-empty
+ partitions when checking is not enabled.
+
+2011-03-25 Release Manager
+
+ * GCC 4.6.0 released.
+
+2011-02-18 Jakub Jelinek <jakub@redhat.com>
+
+ PR bootstrap/47807
+ * Make-lang.in (lto/lto-lang.o): Depend on $(LTO_STREAMER_H) instead
+ of lto-streamer.h.
+
+2011-02-18 Richard Guenther <rguenther@suse.de>
+
+ PR lto/47798
+ * lto-tree.h (lto_global_var_decls): Do not declare here.
+ * lto-lang.c: Include lto-streamer.h.
+ * Make-lang.in (lto-lang.o): Adjust dependencies.
+
+2011-02-10 Kai Tietz <kai.tietz@onevision.com>
+
+ PR lto/47241
+ * lto.c (lto_read_section_data): Free
+ fd_name in failure case.
+ For mingw targets don't hash file-descriptor.
+ (read_cgraph_and_symbols): Close current_lto_file
+ in failure case.
+
+2011-01-11 Jan Hubicka <jh@suse.cz>
+
+ PR lto/45721
+ PR lto/45375
+ * lto.c (partition_cgraph_node_p, partition_varpool_node_p): Weakrefs are
+ not partitioned.
+
+2010-12-22 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-lang.c (handle_nonnull_attribute, handle_sentinel_attribute):
+ Use prototype_p.
+
+2010-12-06 Richard Guenther <rguenther@suse.de>
+
+ PR lto/46796
+ * lto-lang.c (lto_init): Give names to basic types.
+
+2010-11-30 Joseph Myers <joseph@codesourcery.com>
+
+ * lto-object.c: Don't include toplev.h.
+ * Make-lang.in (lto/lto-object.o): Don't depend on toplev.h.
+
+2010-11-30 Joseph Myers <joseph@codesourcery.com>
+
+ * Make-lang.in (lto/lto-object.o): Depend on toplev.h instead of
+ $(TOPLEV_H).
+
+2010-11-29 Joseph Myers <joseph@codesourcery.com>
+
+ * lto-endian.h: Delete.
+ * lto-object.c: Don't include "libiberty.h".
+ (O_BINARY): Don't define.
+ * lto.c: Don't include "libiberty.h" or <sys/mman.h>.
+ (O_BINARY): Don't define.
+
+2010-11-23 Richard Guenther <rguenther@suse.de>
+
+ * lto.c (read_cgraph_and_symbols): Remove newline from diagnostic.
+
+2010-11-23 Richard Guenther <rguenther@suse.de>
+
+ PR lto/46605
+ * lto.c (read_cgraph_and_symbols): Bail out after errors.
+
+2010-11-17 Joseph Myers <joseph@codesourcery.com>
+
+ * lto.c (lto_main): Take no arguments.
+ * lto.h (lto_main): Update prototype.
+
+2010-11-16 Ian Lance Taylor <iant@google.com>
+
+ * lto-object.c (lto_obj_file_open): Call
+ simple_object_attributes_merge rather than
+ simple_object_attributes_compare.
+
+2010-11-12 Joseph Myers <joseph@codesourcery.com>
+
+ * Make-lang.in (lto/lto.o): Use $(OPTS_H).
+ * lto-lang.c (lto_handle_option): Take location_t parameter.
+
+2010-11-10 Joseph Myers <joseph@codesourcery.com>
+
+ * lto.c (lto_resolution_read): Start diagnostics with lowercase
+ letters and remove trailing '.'.
+ (lto_file_finalize): Start diagnostic with a lowercase letter.
+
+2010-11-02 Ian Lance Taylor <iant@google.com>
+
+ * lto-object.c: New file.
+ * lto-elf.c: Remove file.
+ * lto-macho.c: Remove file.
+ * lto-macho.h: Remove file.
+ * lto-coff.c: Remove file.
+ * lto-coff.h: Remove file.
+ * Make-lang.in (LTO_OBJS): Change lto/$(LTO_BINARY_READER).o to
+ lto/lto-object.o.
+ ($(LTO_EXE)): Remove $(LTO_USE_LIBELF)
+ (lto/lto-objfile.o): New target.
+ (lto/lto-elf.o, lto/lto-coff.o, lto/lto-macho.o): Remove targets.
+ (lto/lto.o): Remove $(LIBIBERTY_H).
+
+2010-10-22 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (add_cgraph_node_to_partition,
+ add_varpool_node_to_partition): Add debug info.
+ (lto_1_to_1_map, lto_balanced_map): Do not re-add already
+ partitioned nodes.
+ (do_whole_program_analysis): Set function flags before dumping.
+
+2010-10-22 Richard Guenther <rguenther@suse.de>
+
+ * lto.c (lto_fixup_type): Fixup TYPE_CANONICAL again, via
+ the new gimple_register_canonical_type.
+
+2010-10-20 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR bootstrap/45954
+ * config-lang.in (boot_language): Set to $enable_lto.
+
+2010-10-18 Jakub Jelinek <jakub@redhat.com>
+
+ PR lto/45638
+ * Make-lang.in (check-lto): New dummy target.
+
+2010-10-14 Eric Botcazou <ebotcazou@adacore.com>
+
+ * lto-elf.c (SHN_XINDEX): Define if not already defined.
+
+2010-10-08 Joseph Myers <joseph@codesourcery.com>
+
+ * lto-lang.c (lto_init_options): Change to
+ lto_init_options_struct. Update parameters.
+ (LANG_HOOKS_INIT_OPTIONS): Don't define.
+ (LANG_HOOKS_INIT_OPTIONS_STRUCT): Define.
+
+2010-10-06 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_balanced_map): Fix accounting of program size.
+
+2010-10-06 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_balanced_map): Do not produce empty partitions.
+
+2010-10-06 Andi Kleen <ak@linux.intel.com>
+
+ * lto.c (lto_process_name): Add.
+ (lto_main): Call lto_process_name.
+
+2010-10-06 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (partition_cgraph_node_p, partition_varpool_node_p): Handle
+ COMDATs required by the linker.
+
+2010-10-05 Ian Lance Taylor <iant@google.com>
+
+ * lto.c (lto_section_with_id): Make s a const pointer.
+
+2010-10-05 Jan Hubicka <jh@suse.cz>
+
+ * lto.c: Include params.h.
+ (add_cgraph_node_to_partition, add_varpool_node_to_partition): Do
+ refcounting in aux field.
+ (undo_partition, partition_cgraph_node_p, partition_varpool_node_p):
+ New functions.
+ (lto_1_to_1_map): Simplify.
+ (lto_balanced_map): New function.
+ (do_whole_program_analysis): Chose proper partitioning alg.
+ * Make-lang.in (lto.o): Add dependency on params.h
+
+2010-10-04 Andi Kleen <ak@linux.intel.com>
+
+ * Make-lang.in (lto1): Add + to build rule.
+
+2010-10-03 Andi Kleen <ak@linux.intel.com>
+
+ * lto.c (lto_file_finalize): Replace gcc_assert for missing section
+ with fatal_error.
+
+2010-09-28 Jan Hubicka <jh@suse.cz>
+
+ * lto-lang.c (handle_leaf_attribute): New function.
+ (lto_attribute_tables): Add leaf.
+
+2010-09-25 Jie Zhang <jie@codesourcery.com>
+
+ * lto.c (lto_read_all_file_options): Start a new line after
+ printing out file names.
+
+2010-09-24 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_promote_cross_file_statics): Use const_value_known_p.
+
+2010-09-20 Jan Hubicka <jh@suse.cz>
+
+ PR tree-optimize/45605
+ * lto.c (lto_promote_cross_file_statics): Use const_value_known_p.
+
+2010-09-18 Gerald Pfeifer <gerald@pfeifer.com>
+
+ * lto-elf.c (lto_obj_file_open): Also provide filename when
+ elf_begin fails.
+
+2010-09-17 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_promote_cross_file_statics): Use const_value_known.
+
+2010-09-17 Richard Guenther <rguenther@suse.de>
+
+ * lang.opt (flag_wpa): Also enable for the driver.
+
+2010-09-16 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_materialize_function): Do not tamper with STATIC and
+ EXTERNAL flags.
+
+2010-09-15 Laurynas Biveinis <laurynas.biveinis@gmail.com>
+
+ * lto-tree.h (struct lang_type): Add variable_size GTY option.
+
+2010-09-08 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (real_file_count, real_file_decl_data): New static vars.
+ (read_cgraph_and_symbols): Use it.
+
+2010-09-08 Richard Guenther <rguenther@suse.de>
+
+ * lto.c (read_cgraph_and_symbols): Collect again after each
+ file.
+
+2010-09-07 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (promote_var, promote_fn): Set DECL_VISIBILITY_SPECIFIED.
+
+2010-09-03 Richard Guenther <rguenther@suse.de>
+
+ * lto-elf.c (validate_file): Always error if validation fails.
+
+2010-08-20 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_1_to_1_map): Be prepared for node to have no file data.
+ (lto_wpa_write_files): Update comments.
+
+2010-08-20 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR bootstrap/45357
+ * lto.c (lto_materialize_function): Replace has_analyzed_clone
+ with has_analyzed_clone_p.
+
+2010-08-20 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (has_analyzed_clone_p): New function
+ (lto_materialize_function): Use callgraph to determine if
+ body is needed.
+ (materialize_cgraph): Remove DECL_IS_BUILTIN check.
+
+2010-08-20 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c: Use FOR_EACH_VEC_ELT.
+
+2010-07-27 Andi Kleen <ak@linux.intel.com>
+
+ * Make-lang.in (lto.o): Add dependency to splay-tree.h
+
+2010-07-27 Joseph Myers <joseph@codesourcery.com>
+
+ * lto-lang.c (lto_handle_option): Update prototype and return
+ value type. Remove duplicate assignment to result.
+
+2010-07-27 Joseph Myers <joseph@codesourcery.com>
+
+ * lto-lang.c (lto_option_lang_mask, lto_complain_wrong_lang_p):
+ New.
+ (lto_init_options): Update prototype.
+ (LANG_HOOKS_OPTION_LANG_MASK, LANG_HOOKS_COMPLAIN_WRONG_LANG_P):
+ Define.
+
+2010-07-10 Andi Kleen <ak@linux.intel.com>
+
+ PR lto/44992
+ * lto.c: Include splay-tree.h
+ (lto_resolution_read): Change to walk file_ids tree and parse
+ extra file_id in resolution file.
+ (lto_section_with_id): Add.
+ (create_subid_section_table): Add.
+ (lwstate): Add.
+ (lto_create_files_from_ids): Add.
+ (lto_file_read): Change to handle sub file ids and create list
+ of file_datas. Add output argument for count.
+ (get_section_data): Pass file_data to lto_get_section_name.
+ (lto_flatten_file): Add.
+ (read_cgraph_and_symbols): Handle linked lists of file_datas.
+
+2010-07-10 Andi Kleen <ak@linux.intel.com>
+
+ * lto-coff.c (hash_name, eq_name): Move.
+ (lto_obj_build_section_table): Call lto_obj_create_section_hash_table.
+ * lto-elf.c: (hash_name, eq_name): Move.
+ (lto_obj_build_section_table): Call lto_obj_create_section_hash_table.
+ * lto-macho.c: (hash_name, eq_name): Move.
+ (lto_obj_build_section_table): Call lto_obj_create_section_hash_table.
+ * lto.c: (hash_name, eq_name): Move from lto-*.c
+ (lto_obj_create_section_hash_table): Add.
+ (free_with_string): Add.
+
+2010-07-08 Manuel López-Ibáñez <manu@gcc.gnu.org>
+
+ * lto-coff.c: Include diagnostic-core.h in every file that
+ includes toplev.h.
+ * lto-elf.c: Likewise.
+ * lto-lang.c: Likewise.
+ * lto-macho.c: Likewise.
+
+2010-07-07 Jakub Jelinek <jakub@redhat.com>
+
+ * lto-elf.c (ELFOSABI_NONE, ELFOSABI_LINUX): Define if not defined.
+ (validate_file): Allow merging of ELFOSABI_NONE with ELFOSABI_LINUX
+ objects.
+
+2010-07-05 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (add_cgraph_node_to_partition): Forward declare; walk also
+ nodes from same comdat group as well as all comdat functions referenced
+ here.
+ (add_varpool_node_to_partition, add_references_to_partition): New function.
+ (lto_1_1_map): Skip COMDAT fnctions/variables; use add_varpool_node_to_partition;
+ clear aux flags when done.
+ (lto_promote_cross_file_statics): Do not promote stuff that gets duplicated to
+ each ltrans.
+
+2010-07-04 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (read_cgraph_and_symbols): Dump cgraph before merging.
+
+2010-06-13 Richard Guenther <rguenther@suse.de>
+
+ * lto.c (lto_fixup_type): Do not register or fixup TYPE_CANONICAL.
+
+2010-06-09 Kai Tietz <kai.tietz@onevision.com>
+
+ * lto.c (lto_resolution_read): Pre-initialize local variable r.
+ * lto-coff.c (coff_write_object_file): Add braces to if.
+
+2010-06-08 Laurynas Biveinis <laurynas.biveinis@gmail.com>
+
+ * lto.c (lto_read_in_decl_state): Use typed GC allocation.
+ (lto_file_read): Likewise.
+ (new_partition): Likewise.
+ (read_cgraph_and_symbols): Likewise.
+
+2010-06-07 Joseph Myers <joseph@codesourcery.com>
+
+ * lto-lang.c (flag_no_builtin, flag_no_nonansi_builtin): Remove.
+ (lto_handle_option): Don't set flag_signed_char here.
+
+2010-06-04 Richard Guenther <rguenther@suse.de>
+
+ PR lto/41584
+ * lto.c (lto_1_to_1_map): Use the proper file_data for
+ varpool nodes.
+
+2010-05-30 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (promote_var, promote_fn, lto_wpa_write_files): Dump
+ partitioning decisions.
+
+2010-05-29 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (bitmap vector): Remove.
+ (lto_cgraph_node_sets, lto_varpool_node_sets): Remove.
+ (ltrans_partition_def): New structure.
+ (ltrans_partition): New type and VECtor.
+ (new_partition): New function.
+ (add_cgraph_node_to_partition): New function.
+ (lto_1_to_1_map): Reorganize for partitions.
+ (lto_add_inline_clones): Remove.
+ (lto_add_all_inlinees): Remove.
+ (lto_promote_cross_file_statics): Use partitions.
+ (cmp_partitions): New function.
+ (lto_wpa_write_files): Do not call lto_add_all_inlinees;
+ use partitions; output files sorted by size.
+
+2010-05-29 Steven Bosscher <steven@gcc.gnu.org>
+
+ * Make-lang.in: Replace vec.h dependency with VEC_H.
+
+2010-05-28 Joseph Myers <joseph@codesourcery.com>
+
+ * lto-coff.c (coff_errmsg): Remove.
+ (lto_coff_begin_section_with_type, lto_obj_append_data): Use %m in
+ errors instead of coff_errmsg (-1).
+ * lto-macho.c (mach_o_errmsg): Remove.
+ (lto_obj_begin_section, lto_obj_append_data): Use %m in errors
+ instead of mach_o_errmsg (-1).
+ * lto.c (read_cgraph_and_symbols): Use %m in errors instead of
+ xstrerror (errno).
+
+2010-05-28 Richard Guenther <rguenther@suse.de>
+
+ * lto.c (prefix_name_with_star): Removed.
+ (strip_extension): Likewise.
+ (get_filename_for_set): Likewise.
+ (lto_write_ltrans_list): Fold into ...
+ (lto_wpa_write_files): ... this. Name LTRANS units
+ by suffixing the ltrans output list filename.
+ (do_whole_program_analysis): Adjust.
+
+2010-05-27 Joseph Myers <joseph@codesourcery.com>
+
+ * lto.c: Include diagnostic-core.h instead of diagnostic.h.
+ (read_cgraph_and_symbols, lto_main): Use seen_error.
+ * Make-lang.in (lto/lto.o): Update dependencies.
+
+2010-05-27 Eric Botcazou <ebotcazou@adacore.com>
+
+ PR lto/44230
+ * lto.h (lto_eh_personality): New prototype.
+ * lto.c: Include debug.h.
+ (first_personality_decl): New static variable.
+ (lto_materialize_function): Set it to DECL_FUNCTION_PERSONALITY of the
+ first function for which it is non-null.
+ (lto_eh_personality_decl): New static variable.
+ (lto_eh_personality): New function.
+ * lto-lang.c (LANG_HOOKS_EH_PERSONALITY): Redefine to above function.
+ * Make-lang.in (lto/lto.o): Add dependency on debug.h.
+
+2010-05-26 Steven Bosscher <steven@gcc.gnu.org>
+
+ * lto-lang.c: Do not include expr.h.
+
+2010-05-24 Richard Guenther <rguenther@suse.de>
+
+ * lto-elf.c (lto_obj_build_section_table): Work around
+ FreeBSD libelf issue.
+
+2010-05-22 Richard Guenther <rguenther@suse.de>
+
+ * lto.c (read_cgraph_and_symbols): Do not collect.
+
+2010-05-20 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (promote_var, promote_fn): New functions.
+ (lto_promote_cross_file_statics): Compute correctly boundary including
+ static initializers of readonly vars.
+
+2010-05-18 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_1_to_1_map): Partition non-inline clones.
+ (lto_promote_cross_file_statics): Deal with non-inline clones.
+
+2010-05-18 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_materialize_function): Announce function when
+ reading body; allocate_struct_function only when reading body;
+ do not finalize local statics; ggc_collect after reading;
+ do not mark reachable node.
+ (materialize_cgraph): Do not announce function.
+
+2010-05-11 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (materialize_cgraph): Revert my previous patch.
+
+2010-05-11 Kai Tietz <kai.tietz@onevision.com>
+
+ * lto-coff.c (IMAGE_FILE_MACHINE_ADM64): Rename to
+ IMAGE_FILE_MACHINE_AMD64.
+ * lto-coff.c (IMAGE_FILE_MACHINE_ADM64): Likewise.
+
+2010-05-11 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_fixup_decls): Remove global var decls freeing here.
+ (materialize_cgraph): Add it here.
+
+2010-05-11 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_fixup_decls): Free no longer needed lto_global_var_decls
+ vector.
+
+2010-05-11 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_1_to_1_map): Remove some no longer needed checks.
+ (lto_promote_cross_file_statics): Never promote DECL_EXTERNAL;
+ use reachable_from_other_partition_p and
+ referenced_from_other_partition_p test.
+
+2010-05-11 Kai Tietz <kai.tietz@onevision.com>
+
+ * lto-coff.c (validate_file): Add x64-coff support.
+ * lto-coff.h (IMAGE_FILE_MACHINE_ADM64): New.
+ (COFF_KNOWN_MACHINES): Add IMAGE_FILE_MACHINE_ADM64.
+ * lto-lang.c (lto_build_c_type_nodes): Add check for
+ 'long long unsigned int' for x64-windows.
+ (lto_init): Likewise.
+
+
+2010-05-07 Steven Bosscher <steven@gcc.gnu.org>
+
+ * lto.h (struct lto_file_struct): Document offset member.
+ * lto-endian.h: New file.
+ * lto-macho.h: New file.
+ * lto-macho.c: New file.
+ * Make-lang.in: Add rule for lto-macho.o.
+
+2010-05-07 Richard Guenther <rguenther@suse.de>
+
+ PR lto/43857
+ PR lto/43371
+ * lang.opt (fresolution): Change to ...
+ (fresolution=): ... this.
+ * lto-lang.c (lto_handle_option): Adjust.
+
+2010-05-07 Richard Guenther <rguenther@suse.de>
+
+ * lto.c (DUMPBASE_SUFFIX): Remove.
+ (lto_execute_ltrans): Move functionality to lto-wrapper.c.
+ Rename to ...
+ (lto_write_ltrans_list): ... only output the list of ltrans files.
+ (lto_maybe_unlink): Remove.
+ (do_whole_program_analysis): Do not execute LTRANS phase
+ from here.
+
+2010-05-06 H.J. Lu <hongjiu.lu@intel.com>
+
+ * lto-lang.c (lto_handle_option): Add argument kind.
+
+2010-05-05 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_promote_cross_file_statics): Compute boundary based on
+ refs.
+
+2010-05-05 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_1_to_1_map): Partition only needed nodes.
+
+2010-04-30 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (get_filename_for_set): Look for cgraph node and if none found, use
+ default name.
+ (lto_wpa_write_files): Write any non-empty partition.
+
+2010-04-30 Jan Hubicka <jh@suse.cz>
+
+ * lto.c: Do not attempt to make constant pool references global.
+
+2010-04-28 Jan Hubicka <jh@suse.cz>
+
+ * lto/lto.c (lto_read_in_decl_state): Use GGC.
+ (lto_wpa_write_files): Announce what we are writting.
+ (all_file_decl_data): New.
+ (read_cgraph_and_symbols): Use GGC; correct timevars.
+ (do_whole_program_analysis): Collect.
+ * lto/Make-lang.in (lto.o): Fix dependency.
+ * Makefile.in (GTFILES): Add lto-streamer.h.
+ * varpool.c (varpool_analyze_pending_decls): Use TV_VARPOOL.
+ (varpool_assemble_pending_decls): Use VAROUT.
+ * lto-streamer.h (lto_tree_ref_table): Annotate.
+ (lto_in_decl_state): Annotate.
+ (lto_file_decl_data): Annotate.
+
+2010-04-28 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_varpool_node_sets): New.
+ (lto_1_to_1_map): Partition varpool too.
+ (globalize_context_t, globalize_cross_file_statics,
+ lto_scan_statics_in_ref_table, lto_scan_statics_in_cgraph_node,
+ lto_scan_statics_in_remaining_global_vars): Remove.
+ (lto_promote_cross_file_statics): Rewrite.
+ (get_filename_for_set): Take vset argument.
+ (lto_wpa_write_files): Pass around vsets.
+
+2010-04-27 Dave Korn <dave.korn.cygwin@gmail.com>
+
+ PR lto/42776
+ * Make-lang.in (LTO_OBJS): Use LTO_BINARY_READER instead of
+ hardcoding 'lto-elf.o'.
+ ($(LTO_EXE)): Use LTO_USE_LIBELF instead of hardcoding '-lelf'.
+
+ * lto-coff.h: New file.
+ * lto-coff.c: Likewise.
+
+2010-04-26 Richard Guenther <rguenther@suse.de>
+
+ * lto.c (lto_fixup_type): Deal with non-type TYPE_CONTEXT.
+
+2010-04-26 Dave Korn <dave.korn.cygwin@gmail.com>
+
+ * lto.h (lto_elf_file_open): Rename prototype from this ...
+ (lto_obj_file_open): ... to this.
+ (lto_elf_file_close): Likewise ...
+ (lto_obj_file_close): ... and likewise.
+ (lto_elf_build_section_table): Likewise ...
+ (lto_obj_build_section_table): ... and likewise.
+ (lto_elf_begin_section): Likewise ...
+ (lto_obj_begin_section): ... and likewise.
+ (lto_elf_append_data): Likewise ...
+ (lto_obj_append_data): ... and likewise.
+ (lto_elf_end_section): Likewise ...
+ (lto_obj_end_section): ... and likewise.
+ * lto.c (lto_file_read): Update references to the above.
+ (lto_wpa_write_files): Likewise.
+ (lto_read_all_file_options): Likewise.
+ (read_cgraph_and_symbols): Likewise.
+ * lto-lang.c (LANG_HOOKS_BEGIN_SECTION): Likewise.
+ (LANG_HOOKS_APPEND_DATA): Likewise.
+ (LANG_HOOKS_END_SECTION): Likewise.
+ * lto-elf.c (lto_elf_file_open): Rename from this ...
+ (lto_obj_file_open): ... to this, updating any references.
+ (lto_elf_file_close): Likewise ...
+ (lto_obj_file_close): ... and likewise.
+ (lto_elf_build_section_table): Likewise ...
+ (lto_obj_build_section_table): ... and likewise.
+ (lto_elf_begin_section): Likewise ...
+ (lto_obj_begin_section): ... and likewise.
+ (lto_elf_append_data): Likewise ...
+ (lto_obj_append_data): ... and likewise.
+ (lto_elf_end_section): Likewise ...
+ (lto_obj_end_section): ... and likewise.
+
+2010-04-21 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_fixup_tree): Do not call wpa fixup.
+ (materialize_cgraph): Likewise.
+
+2010-04-21 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_wpa_write_files): Update.
+ (read_cgraph_and_symbols): Be more verbose.
+ (materialize_cgraph): Likewise.
+ (do_whole_program_analysis): Likewise.
+
+2010-04-21 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (globalize_cross_file_statics): When function has address taken,
+ it needs to be public.
+
+2010-04-20 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_add_inline_clones): Do not track inlined_decls.
+ (lto_add_all_inlinees): Likewise.
+ (lto_wpa_write_files): Likewise.
+
+2010-04-18 Eric Botcazou <ebotcazou@adacore.com>
+
+ * lto-lang.c (lto_init): Remove second argument in call to
+ build_common_tree_nodes.
+
+2010-04-16 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
+
+ * lto-elf.c [!HAVE_ELF_GETSHDRSTRNDX] (elf_getshdrstrndx): New
+ function.
+
+2010-03-09 Eric Botcazou <ebotcazou@adacore.com>
+
+ PR bootstrap/43276
+ * lto-elf.c: Define EM_* constants if not already defined.
+
+2010-03-03 Eric Botcazou <ebotcazou@adacore.com>
+
+ * lto-elf.c (is_compatible_architecture): New static function.
+ (DEFINE_VALIDATE_EHDR): Use it to validate the architecture.
+
+2010-02-11 Richard Guenther <rguenther@suse.de>
+
+ PR driver/43021
+ * lto-elf.c (lto_elf_file_open): Handle file@offset case more
+ appropriately.
+
+2010-01-11 Andy Hutchinson <hutchinsonandy@gcc.gnu.org>
+
+ * lto.c (O_BINARY): Define.
+ (lto_read_section_data): Open file in binary mode.
+ * lto-elf.c (O_BINARY): Define.
+ (lto_elf_file_open): Open file in binary mode.
+
+2010-01-08 Richard Guenther <rguenther@suse.de>
+
+ PR lto/42528
+ * lto-lang.c (lto_handle_option): Handle -f[un]signed-char.
+ (lto_init): Do not init char_type_node in a standard way
+ but according to flag_signed_char.
+
+2010-01-03 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR lto/41564
+ * lto.c (DUMPBASE_SUFFIX): New.
+ (lto_execute_ltrans): Append a sequence number to -dumpbase
+ for LTRANS.
+
+2010-01-02 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR lto/42580
+ * lto-elf.c (lto_elf_file_open): Stop if the command line
+ option file is missing.
+
+2009-12-15 Richard Guenther <rguenther@suse.de>
+
+ * lto.c (lto_fixup_field_decl): Fixup DECL_FIELD_OFFSET.
+ (lto_post_options): Do not disable debuginfo.
+
+2009-12-14 Dmitry Gorbachev <d.g.gorbachev@gmail.com>
+
+ * Make-lang.in ($(LTO_EXE)): Use $(LINKER).
+
+2009-12-11 Richard Guenther <rguenther@suse.de>
+
+ PR lto/42037
+ * lto.c (lto_resolution_read): Properly grow the vector.
+
+2009-12-11 Richard Guenther <rguenther@suse.de>
+
+ PR lto/41915
+ * lto-lang.c (lto_init_options): Initialize flag_complex_method
+ to the C99 default. Do not set flag_unit_at_a_time.
+
+2009-11-28 Jakub Jelinek <jakub@redhat.com>
+
+ * lto-lang.c (handle_nonnull_attribute): Remove unused attr_arg_num
+ variable.
+
+2009-11-19 Rafael Avila de Espindola <espindola@google.com>
+
+ PR bootstrap/42096
+ * lto-elf.c (lto_elf_file_open): Use lto_parse_hex.
+ * lto.c (lto_parse_hex): New.
+ (lto_resolution_read): Use lto_parse_hex.
+ * lto.h (lto_parse_hex): New.
+
+2009-11-17 Rafael Avila de Espindola <espindola@google.com>
+
+ * lto-elf.c (lto_file_init): Add offset argument.
+ (lto_elf_file_open): Record the offset.
+ * lto.c (lto_resolution_read): Change file_name into a lto_file
+ argument. Check offsets.
+ (lto_file_read): Update call to lto_resolution_read.
+ * lto.h (lto_file_struct): Add the offset field.
+
+2009-11-16 Rafael Avila de Espindola <espindola@google.com>
+
+ * lto-elf.c (lto_elf_file_open): Use strtoll to parse the offset.
+
+2009-11-14 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (read_cgraph_and_symbols): Set also ipa_transforms_to_apply.
+
+2009-11-12 Rafael Avila de Espindola <espindola@google.com>
+
+ * lang.opt (fresolution): Renamed from resolution.
+ * lto-lang.c (lto_handle_option): Handle new option name.
+ * lto.c (lto_resolution_read): Add more checks. Discard rest of line.
+
+2009-11-04 Richard Guenther <rguenther@suse.de>
+ Rafael Avila de Espindola <espindola@google.com>
+
+ * lto-elf.c (lto_elf_build_section_table): Add the base offset.
+ (lto_elf_file_open): Handle offsets in arguments name@offest.
+
+2009-10-30 Richard Guenther <rguenther@suse.de>
+
+ PR lto/41858
+ * lto.c (lto_file_read): Do not set file_data->fd.
+ (lto_read_section_data): Use a single-entry file-descriptor cache.
+ Do not check the result of xmalloc.
+ (free_section_data): Do not use file_data->fd.
+ (lto_read_all_file_options): Likewise.
+
+2009-10-22 Richard Guenther <rguenther@suse.de>
+
+ * lto.c (lto_fixup_jump_functions): Remove.
+ (lto_fixup_decls): Do not fixup jump functions.
+ (read_cgraph_and_symbols): Schedule cgraph merging after
+ summary reading. Schedule type and decl fixup before
+ summary reading.
+
+2009-10-22 Richard Guenther <rguenther@suse.de>
+
+ * lto.c (lto_fixup_data_t): Remove free_list member.
+ (lto_fixup_tree): Do not insert into free_list.
+ (free_decl): Remove.
+ (lto_fixup_decls): Remove free-list handling.
+
+2009-10-22 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_fixup_jump_functions): New function.
+ (lto_fixup_decls): Use it.
+
+2009-10-16 Richard Guenther <rguenther@suse.de>
+
+ PR lto/41715
+ * lto.c (lto_fixup_tree): Revert last change.
+
+2009-10-14 Richard Guenther <rguenther@suse.de>
+
+ * lto.c (lto_fixup_tree): In case the prevailing decl is not
+ compatible with the one we replace wrap it around a
+ VIEW_CONVERT_EXPR.
+
+2009-10-09 Richard Guenther <rguenther@suse.de>
+
+ PR lto/41635
+ PR lto/41636
+ * lto.c (read_cgraph_and_symbols): Do not assert we can open
+ a file.
+ * lto-elf.c (init_shdr##BITS): Fix i18n problems.
+ (init_ehdr##BITS): Likewise.
+
+2009-10-08 Joseph Myers <joseph@codesourcery.com>
+
+ * lto-elf.c (init_shdr##BITS, lto_elf_begin_section_with_type,
+ init_ehdr##BITS, lto_elf_file_close): Remove trailing "." from
+ diagnostics.
+ * lto-lang.c (lto_post_options): Remove trailing "." from
+ diagnostics.
+
+2009-10-08 Richard Guenther <rguenther@suse.de>
+
+ * lto.c (read_cgraph_and_symbols): Free the gimple type merging
+ hash tables.
+
+2009-10-07 Joseph Myers <joseph@codesourcery.com>
+
+ * lto.c: Only include <sys/mman.h> if HAVE_MMAP_FILE.
+
+2009-10-07 Jan Hubicka <jh@suse.cz>
+
+ * lto.c (read_cgraph_and_symbols): Mark functions neccesary only at
+ ltrans stage; explain why this is needed and should not.
+
+2009-10-05 Richard Guenther <rguenther@suse.de>
+
+ PR lto/41552
+ PR lto/41487
+ * lto.c (lto_read_decls): Do not register deferred decls.
+ (read_cgraph_and_symbols): Delay symbol and cgraph merging
+ until after reading the IPA summaries.
+
+2009-10-02 Rafael Avila de Espindola <espindola@google.com>
+
+ * Make-lang.in (lto/lto-lang.o): Don't depend on lto/common.h.
+ (lto-lang.c): Don't include lto/common.h.
+
+2009-10-02 Rafael Avila de Espindola <espindola@google.com>
+
+ * Make-lang.in (LTO_OBJS): Remove lto/common.o.
+ (lto/common.o): Remove.
+ * common.c: Remove.
+ * common.h (lto_kind_str): Remove.
+ (lto_visibility_str): Remove.
+ (lto_resolution_str): Make it static.
+
+2009-10-01 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (lto_read_decls): Add comment.
+ Call internal_error instead of gcc_assert.
+ (lto_resolution_read): Likewise.
+ (lto_add_all_inlinees): Tidy.
+ * Make-lang.in: Fix copyright boilerplate.
+ (lto.pdf): New.
+ (lto.install-pdf): New.
+ * lto-tree.h: Fix copyright boilerplate.
+ * lang-specs.h: Likewise.
+ Remove ".lto" entry from compilers fragment.
+ * lto-elf.c: Move inclusion of gelf.h after config.h.
+ Tidy formatting everywhere.
+ * lto.h: Fix copyright boilerplate.
+ Tidy formatting everywhere.
+ * common.c: Likewise.
+ * config-lang.in: Likewise.
+ * common.h: Likewise.
+ * lto-lang.c: Likewise.
+
+2009-10-01 Richard Guenther <rguenther@suse.de>
+
+ * lto.c (lto_read_section_data): Use plain lseek/read.
+
+2009-10-01 Richard Guenther <rguenther@suse.de>
+
+ * lto.c (LTO_MMAP_IO): Define if we can mmap files and
+ use sysconf to query the system page size.
+ (lto_file_read): Implement fallback using stdio.
+ (free_section_data): Likewise.
+
+2009-09-29 Diego Novillo <dnovillo@google.com>
+
+ * lto-lang.c (lto_init): Really fix call to
+ build_common_builtin_nodes.
+
+2009-09-29 Diego Novillo <dnovillo@google.com>
+
+ * lto-lang.c (lto_init): Fix call to
+ build_common_builtin_nodes.
+
+2009-09-29 Richard Guenther <rguenther@suse.de>
+
+ PR lto/40754
+ * lto-elf.c (init_shdr##BITS): Properly specify alignment
+ in bytes.
+ (first_data_block): New static variable.
+ (lto_elf_append_data): Align the first data block in each
+ section.
+
+2009-09-28 Diego Novillo <dnovillo@google.com>
+
+ * lto-lang.c: Tidy. Remove stale FIXME lto markers.
+ * lto.c (strip_extension): New.
+ (get_filename_for_set): Call it. Do not call make_cwd_temp_file.
+ (lto_execute_ltrans): Tidy.
+ Do not pass -fwpa nor -fltrans-* to LTRANS.
+ * opts.c: Tidy formatting and remove stale FIXME lto markers.
+ * tree.c (need_assembler_name_p): Call
+ lang_hooks.decls.may_need_assembler_name_p if set.
+ * varasm.c (default_binds_local_p_1): Remove check for
+ flag_ltrans.
+ * varpool.c (decide_is_variable_needed): Do not test for
+ in_lto_p.
+
+2009-09-22 Richard Guenther <rguenther@suse.de>
+
+ PR lto/39276
+ * lto.c (lto_execute_ltrans): Perform ltrans phase manually.
+ * Make-lang.in: Remove ltrans-driver stuff.
+ * config-lang.in: Likewise.
+ * lang.opt (fltrans-driver): Remove.
+ * lto-lang.c (lto_init_options): Remove code initializing
+ ltrans_driver.
+ * ltrans-driver: Remove.
+
+2009-09-21 Diego Novillo <dnovillo@google.com>
+
+ * lto-lang.c (lto_define_builtins): Remove superfluous
+ calls to targetm.init_builtins and build_common_builtin_nodes.
+ (lto_init): Add targetm.arm_eabi_unwinder as parameter to
+ build_common_builtin_nodes.
+ * lto.c (lto_materialize_function): Do nothing if NODE is a
+ clone.
+
+2009-09-03 Diego Novillo <dnovillo@google.com>
+
+ * lto-elf.c (validate_file): Replace call to
+ elf_getshstrndx with call to elf_getshdrstrndx.
+
+2009-08-19 Richard Guenther <rguenther@suse.de>
+
+ * lto-lang.c (lto_init): Merge char_type_node with the
+ appropriately signed variant.
+
+2009-08-19 Richard Guenther <rguenther@suse.de>
+
+ PR lto/41071
+ * lto.c (lto_fixup_common): Re-build the pointer-to chain part one.
+ (lto_fixup_type): Re-build the pointer-to chain part two.
+
+2009-08-19 Richard Guenther <rguenther@suse.de>
+
+ PR lto/41071
+ * lto.c (lto_fixup_type): Re-build the type variant chain.
+
+2009-08-19 Richard Guenther <rguenther@suse.de>
+
+ PR lto/41071
+ * lto.c (lto_fixup_constructor): New function.
+ (lto_fixup_tree): Replace all types. Properly fixup
+ constructors and constants.
+
+2009-08-14 Richard Guenther <rguenther@suse.de>
+
+ * lto.c (read_cgraph_and_symbols): Exchange TREE_CHAIN use
+ for DECL_LANG_SPECIFIC.
+
+2009-08-13 Richard Guenther <rguenther@suse.de>
+
+ PR lto/41032
+ * lto-lang.c (LANG_HOOKS_TYPES_COMPATIBLE_P): Define to NULL.
+
+2009-07-30 Richard Guenther <rguenther@suse.de>
+
+ PR lto/40903
+ * lto.c (read_cgraph_and_symbols): After fixing up decls choose
+ the largest decl for output and free TREE_CHAIN for further
+ use.
+
+2009-07-24 Diego Novillo <dnovillo@google.com>
+
+ * Make-lang.in: Add empty lto.install-plugin target.
+
+2009-07-13 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (lto_fixup_tree): Handle IMPORTED_DECL.
+
+2009-07-11 Richard Guenther <rguenther@suse.de>
+
+ * lto-lang.c (lto_write_globals): Wrapup global decls.
+
+2009-07-10 Richard Guenther <rguenther@suse.de>
+
+ * lto-lang.c (lto_init): Allocate one more location to make
+ BUILTINS_LOCATION correct.
+
+2009-07-09 Rainer Orth <ro@TechFak.Uni-Bielefeld.DE>
+
+ * lto.c (free_section_data): Cast computed_offset to caddr_t.
+
+2009-07-06 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (lto_fixup_type): Fixup TYPE_SIZE and
+ TYPE_SIZE_UNIT.
+
+2009-07-06 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (preload_common_nodes): Remove.
+ (lto_read_in_decl_state): Call lto_streamer_cache_get.
+ (lto_read_decls): Call lto_data_in_create and
+ lto_data_in_delete.
+ (free_decl): Do not call ggc_free.
+ (lto_main): Call lto_init_reader.
+ * lto-lang.c (lto_type_for_size): Handle intTI_type_node.
+ (lto_init): Initialize main_identifier_node if needed.
+ Make ptrdiff_type_node be integer_type_node.
+
+2009-06-19 Diego Novillo <dnovillo@google.com>
+
+ * lto.c: Remove code guarded by #ifdef LTO_STREAM_DEBUGGING.
+ Remove code guarded by #ifdef GLOBAL_STREAMER_TRACE.
+ Remove code guarded by #ifdef LOCAL_TRACE.
+
+2009-06-18 Diego Novillo <dnovillo@google.com>
+
+ * lto.c: Update license to GPLv3.
+ * lto-elf.c: Likewise.
+ * common.c: Likewise.
+ * lto-lang.c: Likewise.
+ * lto.h: Remove superfluous include files. Update all
+ users.
+
+2009-06-17 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (read_cgraph_and_symbols): Call input_cgraph.
+
+2009-06-02 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (lto_1_to_1_map): Ignore nodes that have not been
+ read in.
+ (materialize_cgraph): Only materialize nodes that have a
+ representation on file.
+
+2009-06-01 Diego Novillo <dnovillo@google.com>
+
+ * lto-lang.c (lto_handle_option): Hanlde OPT_Wabi.
+
+2009-05-31 Diego Novillo <dnovillo@google.com>
+
+ * lto-lang.c (lto_type_for_mode): Handle all the modes
+ handled in c_common_type_for_mode.
+
+2009-05-21 Diego Novillo <dnovillo@google.com>
+
+ * lto-elf.c: Always include <gelf.h>.
+ * config-lang.in (target_libs): Remove.
+ (build_by_default): Set to no.
+
+2009-05-15 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (lto_materialize_function): Assert that DECL is
+ not a builtin.
+ (materialize_cgraph): Don't try to materialize builtin
+ functions.
+ * lto-section-out.c (write_symbol_vec): Do not write
+ builtin functions.
+
+2009-05-13 Diego Novillo <dnovillo@google.com>
+
+ * lto-lang.c (LANG_HOOKS_GET_ALIAS_SET): Define.
+
+2009-05-07 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (lto_resolution_read): Add type casts for C++ warnings.
+ (LTO_REGISTER_TYPE_AND_FIXUP_SUBTREE): Define.
+ (lto_fixup_type): Call it for TYPE_POINTER_TO,
+ TYPE_REFERENCE_TO, TYPE_CONTEXT and TYPE_CANONICAL.
+ (lto_fixup_tree): Call gimple_register_type when *TP is a
+ type.
+ (lto_main): Call bitmap_obstack_initialize.
+
+2009-04-22 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (free_section_data): Tidy.
+ (lto_1_to_1_map): Tidy.
+ (lto_add_all_inlinees): Tidy.
+ (prefix_name_with_star): New.
+ (get_filename_for_set): New.
+ (lto_wpa_write_files): Call cgraph_node_set_needs_ltrans_p
+ to determine what cgraph node sets to write.
+ Call get_filename_for_set to compute temporary file
+ names.
+ (lto_execute_ltrans): Do not execute LTRANS on files with
+ names that start with '*'.
+ Move logic to execute LTRANS together so that LTRANS is
+ invoked only if there are any files to compile.
+ (do_whole_program_analysis): Only remove output files
+ that do not start with '*'.
+
+2009-04-06 Diego Novillo <dnovillo@google.com>
+
+ * lto-lang.c (lto_post_options): Set flag_excess_precision_cmdline.
+ * lto.c (read_cgraph_and_symbols): Set cgraph_function_flags_ready.
+ (lto_add_all_inlinees): Tidy.
+
+2009-03-26 Diego Novillo <dnovillo@google.com>
+
+ * lto.c: Include gimple.h.
+ (lto_read_in_decl_state): Call gimple_register_type for
+ every type in every stream.
+ (lto_fixup_common): Call gimple_register_type if T has a
+ type.
+ (do_whole_program_analysis): Call print_lto_report.
+ (lto_main): Call print_lto_report after cgraph_optimize.
+ * Make-lang.in (lto.o): Add dependency on GIMPLE_H.
+
+2009-03-24 Diego Novillo <dnovillo@google.com>
+
+ * Make-lang.in (lto-lang.o): Add dependency on TARGET_H and EXPR_H.
+ (lto.o): Add dependency on GIMPLE_H.
+
+2009-03-10 Simon Baldwin <simonb@google.com>
+
+ * lto.c (lto_read_all_file_options): Close any open file descriptor
+ contained in file_data before freeing.
+
+2009-02-24 Rafael Avila de Espindola <espindola@google.com>
+
+ * lto.c (lto_add_inline_clones): Don't add the master clone. Check
+ for a decl in the original bitmap, not a node.
+ (lto_add_all_inlinees): Remove original nodes that are not needed.
+ (lto_scan_statics_in_cgraph_node): Don't care if the node is the master.
+
+2009-02-24 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (lto_materialize_function): Update
+ lto_stats.num_function_bodies.
+ (get_section_data): Initialize *LEN to 0.
+ (lto_1_to_1_map): Update lto_stats.num_cgraph_partitions.
+ (lto_wpa_write_files): Update lto_stats.num_cgraph_nodes.
+ Update lto_stats.num_output_files.
+ (read_cgraph_and_symbols): Update lto_stats.num_input_files.
+ (materialize_cgraph): Update lto_stats.num_input_cgraph_nodes.
+ (lto_main): Initialize lto_stats.
+ If flag_lto_report is set, call print_lto_report.
+
+2009-02-19 Diego Novillo <dnovillo@google.com>
+
+ Revert
+
+ 2009-02-19 Rafael Avila de Espindola <espindola@google.com>
+
+ * lto.c (lto_add_inline_clones): Don't add the
+ master clone. Check for a decl in the original
+ bitmap, not a node.
+ (lto_add_all_inlinees): Remove original nodes
+ that are not needed.
+ (lto_scan_statics_in_cgraph_node): Don't care if
+ the node is the master.
+ (lto_promote_cross_file_statics): Use a new
+ context.seen_node_decls for each set
+
+2009-02-19 Rafael Avila de Espindola <espindola@google.com>
+
+ * lto.c (lto_add_inline_clones): Don't add the master clone. Check
+ for a decl in the original bitmap, not a node.
+ (lto_add_all_inlinees): Remove original nodes that are not needed.
+ (lto_scan_statics_in_cgraph_node): Don't care if the node is the master.
+ (lto_promote_cross_file_statics): Use a new context.seen_node_decls
+ for each set
+
+2009-02-18 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (lto_wpa_write_files): Use timers TV_WHOPR_WPA
+ and TV_WHOPR_WPA_IO.
+ (lto_execute_ltrans): Use timer TV_WHOPR_WPA_LTRANS_EXEC.
+ (read_cgraph_and_symbols): Use timer TV_IPA_LTO_DECL_IO.
+ (materialize_cgraph): Use timer TV_IPA_LTO_GIMPLE_IO.
+ Use timer TV_WHOPR_WPA or TV_WHOPR_LTRANS or TV_LTO
+ depending on command line flags.
+ (do_whole_program_analysis): Use timer TV_WHOPR_WPA.
+ (lto_main): Remove timer uses.
+
+2009-02-18 Rafael Avila de Espindola <espindola@google.com>
+
+ * lto.c (lto_materialize_function): Don't set DECL_EXTERN to 0.
+ (lto_wpa_write_files): Update calls to renamed functions.
+
+2009-02-17 Diego Novillo <dnovillo@google.com>
+
+ PR 39203
+ * lto-lang.c (lto_post_options): Disable -fwhole-program
+ when running LTRANS.
+
+2009-02-10 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (read_cgraph_and_symbols): Fix comment.
+
+2009-02-10 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (read_cgraph_and_symbols): Read options from all
+ IL files.
+
+2009-02-10 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (read_cgraph_and_symbols): Factor out of lto_main.
+ (materialize_cgraph): Likewise.
+ (do_whole_program_analysis): Likewise.
+ (lto_main): Call read_cgraph_and_symbols,
+ materialize_cgraph and do_whole_program_analysis.
+
+2009-02-10 Simon Baldwin <simonb@google.com>
+
+ * lto.c: Include lto-opts.h.
+ * (lto_main): Clear file options at loop start, read any saved
+ options from the first file handled, and re-issue options.
+ * Makefile.in (lto.o): Add dependency on lto-opts.h.
+
+2009-02-02 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (lto_main): Stop LTO_TIMER and use
+ TV_WHOPR_WPA_LTRANS_EXEC when launching LTRANS.
+
+2009-01-30 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR lto/38995
+ * lto-elf.c (init_shdr##BITS): Set the sh_addralign field
+ to POINTER_SIZE.
+
+2009-01-29 Ramana Radhakrishnan <ramana.r@gmail.com>
+
+ * Make-lang.in (LTO_EXE): Link with all
+ BACKENDLIBS and not only GMPLIBS
+
+2009-01-28 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR bootstrap/38992
+ * lto-elf.c: Include gelf.h instead of libelf.h.
+ (lto_elf_file_close): Replace elfx_update_shstrndx with
+ gelf_getehdr, elf_getscn, gelf_getshdr, gelf_update_shdr and
+ gelf_update_ehdr.
+
+2009-01-28 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR middle-end/38996
+ * lto-elf.c (DEFINE_INIT_EHDR): Initialize e_version.
+
+2009-01-26 Diego Novillo <dnovillo@google.com>
+
+ * lto-lang.c (LANG_HOOKS_TYPES_COMPATIBLE_P): Update.
+
+2009-01-26 Diego Novillo <dnovillo@google.com>
+
+ * lto-lang.c (lto_types_compatible_p): Move to gimple.c
+ and rename into gimple_types_compatible_p.
+
+2009-01-12 Rafael Avila de Espindola <espindola@google.com>
+
+ * lto-lang.c (lang_hooks): Remove the const qualifier.
+
+2009-01-06 Diego Novillo <dnovillo@google.com>
+
+ * ltrans-driver: Mark 'all' target as phony.
+
+2008-12-31 Diego Novillo <dnovillo@google.com>
+
+ * ltrans-driver: Execute a NOP action for target 'all'.
+
+2008-12-19 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (lto_1_to_1_map): Tidy.
+
+2008-12-19 Diego Novillo <dnovillo@google.com>
+
+ * lto-elf.c (lto_elf_file_open): When FILENAME cannot
+ be opened, show its name.
+ * ltrans-driver: If $verbose is set, do not use parallelism.
+
+2008-12-17 Rafael Avila de Espindola <espindola@google.com>
+
+ * lto.c (lto_fixup_function): New.
+ (lto_fixup_tree): Call lto_fixup_function.
+
+2008-12-14 Doug Kwan <dougkwan@google.com>
+
+ * lto.c (lto_1_to_1_map): Create a cgraph node set for any global
+ variables if there is no function.
+
+2008-12-10 Simon Baldwin <simonb@google.com>
+
+ * ltrans-driver: Always run make in silent mode, to avoid make's
+ trace on stdout interfering with lto-wrapper output.
+
+2008-12-10 Doug Kwan <dougkwan@google.com>
+
+ * lto.c (lto_add_inline_clones): Do not force master clones of
+ inlined functions already in SET to be static inline.
+
+2008-12-04 Doug Kwan <dougkwan@google.com>
+
+ * lto.c (globalize_context_t): New type to store states in
+ globalization of cross-file statics.
+ (globalize_cross_file_statics): New.
+ (lto_scan_statics_in_ref_table): Walk tree to look for reachable
+ static decls that need to be fixed up.
+ (lto_scan_statics_in_cgraph_node): Change call interface to use
+ a globalize_context_t CONTEXT for all states used.
+ (lto_scan_statics_in_remaining_global_vars): New.
+ (lto_promote_cross_file_statics): Use new call interface of
+ LTO_SCAN_STATICS_IN_CGRAPH_NODE. Handle remaining externally
+ visible vars in the last set.
+
+2008-12-03 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (lto_fixup_tree): Do not emit an error when
+ PREVAILING throw but T doesn't.
+
+2008-12-02 Doug Kwan <dougkwan@google.com>
+
+ * lto.c (lto_scan_statics_in_ref_table): New function factored out
+ from code in ...
+ (lto_scan_statics_in_cgraph_node): Handle both file-scope static
+ variables and functions.
+ (lto_promote_cross_file_statics): Rename bitmaps to SEEN_DECLS
+ and GLOBAL_DECLS from SEEN_VARS and GLOBAL_VARS.
+
+2008-11-29 Diego Novillo <dnovillo@google.com>
+
+ * lto.c: Include timevar.h.
+ (lto_materialize_function): Tidy. Add comments.
+ (lto_wpa_write_files): Tidy.
+ (lto_execute_ltrans): Tidy.
+ (lto_main): Add local variable LTO_TIMER. Initialize it
+ to one of TV_WHOPR_WPA, TV_WHOPR_LTRANS or TV_LTO.
+ Start and stop the timer.
+ Tidy comments.
+ * Make-lang.in (lto.o): Add dependency on timevar.h.
+ * ltrans-driver: React to -v and -save-temps.
+ Use simple heuristic to determine how much parallelism to
+ use when executing make.
+
+2008-11-12 Doug Kwan <dougkwan@google.com>
+
+ * lto.c (lto_bitmap_obstack): Remove var.
+ (lto_materialize_function): Do nothing instead of marking function
+ body in file if flag_wpa is true.
+ (lto_add_all_inlinees): Use bitmap functions in lto-utils.c.
+ (lto_scan_statics_in_cgraph_node): New function.
+ (lto_promote_cross_file_statics): Same.
+ (lto_wpa_write_files): Call lto_promote_cross_file_statics.
+ Use bitmap functions in lto-utils.c. Remove unsued label OUT.
+ * Make-lang.in (lto/lto.o): Add lto-utils.h to dependency list.
+
+2008-11-09 Diego Novillo <dnovillo@google.com>
+
+ * lto/lto.c (lto_fixup_tree): Change error message locus
+ information to include location of mismatching
+ declaration.
+ Use TREE_NO_WARNING to avoid repeated messages.
+ (lto_main): If lto_fixup_decls emitted any errors, exit.
+ * lto/lto-lang.c: Don't include libfuncs.h and except.h
+ (lto_init_options): Don't enable exceptions by default.
+ (lto_eh_runtime_type): Move to lto-function-in.c
+ (lto_init_eh): Likewise.
+ (lto_init): Don't call lto_init_eh.
+ * lto/Make-lang.in (lto-lang.o): Remove dependency on
+ libfuncs.h and except.h.
+
+2008-10-30 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (lto_read_decls): Declare debug_main only if
+ LTO_STREAM_DEBUGGING is enabled.
+
+2008-10-30 Simon Baldwin <simonb@google.com>
+
+ * lto.c (lto_wpa_write_files): Create intermediate files with
+ make_cwd_temp_file().
+ (lto_maybe_unlink): New. Delete intermediate WPA files unless
+ WPA_SAVE_LTRANS is set.
+ (lto_main): Call lto_maybe_unlink() for intermediate WPA files.
+ * ltrans-driver: Do not strip directory from output files.
+
+2008-10-29 Doug Kwan <dougkwan@google.com>
+
+ * lto.c (free_decl): Call lto_symtab_clear_resolution when freeing
+ DECL.
+ * Make-lang.in (LTO_OBJS): Remove lto/lto-symtab.o
+ (lto/lto-symtab.o): Remove rule.
+ * lto-tree.h (struct lang_identifier): Remove LTO specific fields.
+ (struct lang_decl): Remove RESOLUTION and add DUMMY in struct.
+ (LANG_IDENTIFIER_CAST, LTO_IDENTIFIER_DECL, LTO_DECL_RESOLUTION):
+ Remove macros.
+ lto-symtab.c (File): Move up one level.
+ lto-lang.c (cgraph.h): Remove include.
+ (input_overwrite_node, input_node, input_edge, input_cgraph_1,
+ input_cgraph): Move to lto-cgraph.c in gcc directory above.
+ (LANG_HOOKS_INPUT_CGRAPH): Remove use of macro.
+
+2008-10-24 Rafael Espindola <espindola@google.com>
+
+ * lto-function-in.c (get_resolution): Return LDPR_PREEMPTED_IR for
+ non prevailing weak symbols.
+
+2008-10-24 Rafael Espindola <espindola@google.com>
+
+ * lto-lang.c (input_cgraph_1): Iterate over nodes, not cgraph_nodes.
+
+2008-10-24 Rafael Espindola <espindola@google.com>
+
+ * lto-lang.c (input_node): Avoid casts from pointers to ints of
+ different types.
+
+2008-10-23 Simon Baldwin <simonb@google.com>
+
+ * lto-lang.c (input_node): Save the node reference, rather than the
+ node pointer, in node->inlined_to.
+ (input_cgraph_1): Convert node references into node pointers.
+
+2008-10-22 Diego Novillo <dnovillo@google.com>
+ Rafael Espindola <espindola@google.com>
+
+ * lto.c (lto_resolution_read): Tidy.
+ * lto-symtab.c (lto_symtab_prevailing_decl): Do not
+ abort if RET is NULL.
+
+2008-10-22 Doug Kwan <dougkwan@google.com>
+
+ * lto.c (lto_fixup_tree): Check for NOTHROW conflict only if
+ exceptions flag is given.
+ * lto-lang.c: (lto_init_options) Set default exceptions flag.
+ (lto_init_eh): Remove exceptions flag initialization.
+ (lto_init): Only call lto_init_eh if exceptions flag is set.
+
+2008-10-21 Diego Novillo <dnovillo@google.com>
+
+ * lto.c: Tidy some formatting.
+ * lto.h: Likewise.
+
+2008-10-21 Simon Baldwin <simonb@google.com>
+
+ * lto-symtab.c: (lto_same_type_p): Types cannot be equal if one of
+ them is NULL (but not the other).
+
+2008-10-17 Diego Novillo <dnovillo@google.com>
+
+ * ltrans-driver: Divert output from make to a temporary file.
+ Show it if the call to make failed.
+
+2008-10-15 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (lto_wpa_write_files): Reformat do-while loop.
+ Do not print TEMP_FILENAME
+ * ltrans-driver: Call make with -s.
+
+2008-10-15 Diego Novillo <dnovillo@google.com>
+
+ * lto-symtab.c (lto_symtab_merge_decl): Do not force
+ TREE_STATIC on global symbols.
+
+2008-10-14 Ollie Wild <aaw@google.com>
+
+ * Make-lang.in (LTRANS_DRIVER_INSTALL_NAME): Remove.
+ (LTRANS_DRIVER_EXE): Add.
+ (lto.all.cross): Add LTRANS_DRIVER_EXE.
+ (lto.all.encap): Add LTRANS_DRIVER_EXE.
+ (lto.install.common): Remove ltrans-driver.
+ (lto.mostlyclean): Add LTRANS_DRIVER_EXE.
+ (LTRANS_DRIVER_EXE): New build rule.
+ * config-lang.in (compilers): Add ltrans-driver.
+
+2008-10-14 Diego Novillo <dnovillo@google.com>
+
+ * Make-lang.in (LTRANS_DRIVER_INSTALL_NAME): Disable transformation
+ of program name.
+
+2008-10-13 Ollie Wild <aaw@google.com>
+
+ * lang-spec.h (@lto): Replace lto1_options with cc1_options.
+ * lto.c (lto_execute_ltrans): Add "-fno-wpa -fltrans -xlto" to CFLAGS.
+ * ltrans-driver (LTRANS_FLAGS): Remove.
+
+2008-10-08 Doug Kwan <dougkwan@google.com>
+
+ * lto.c (lto_fixup_tree): Remove ATTRIBUTE_UNUSED from DATA.
+ Handle new tree codes RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
+ and TREE_BINFO. Also move code handling FUNCTION_DECL and VAR_DECL
+ from lto_fixup_state to here.
+ (lto_fixup_state): Take an lto_fixup_data_t object DATA instead of
+ just a free-list. Fix up types also. Move decl merging code to
+ lto_fixup_tree.
+ (lto_fixup_state_aux): Change AUX to point to an lto_fixup_data_t
+ object.
+ (lto_fixup_decls): Use another pointer set to avoid multiple
+ walking of nodes except for DECLs to be replaced. Pass an
+ lto_fixup_data_t object to tree-walker.
+
+2008-10-08 Rafael Espindola <espindola@google.com>
+
+ * lto-symtab.c (lto_symtab_set_resolution): New.
+ (lto_symtab_merge_decl): Use lto_symtab_set_resolution and
+ lto_symtab_get_resolution.
+ (lto_symtab_prevailing_decl): Return decl for non public decls.
+ (lto_symtab_get_resolution): New.
+ * lto.c (lto_fixup_tree, lto_fixup_state): Remove unecessary checks.
+
+2008-10-06 Rafael Espindola <espindola@google.com>
+
+ * lto-lang.c: Include cgraph.h.
+ (input_overwrite_node, input_node, input_edge, input_cgraph_1,
+ input_cgraph): Moved from lto-cgraph.c.
+ (LANG_HOOKS_INPUT_CGRAPH): New.
+
+2008-10-03 Rafael Espindola <espindola@google.com>
+
+ * lto.c (lto_fixup_tree, lto_fixup_state): Fix the FIXME.
+
+2008-10-03 Rafael Espindola <espindola@google.com>
+
+ * lto-symtab.c (lto_symtab_overwrite_decl): Remove. Remove all calls.
+ (lto_symtab_merge_decl): Update LTO_IDENTIFIER_DECL the reflect the
+ prevailing definition. Don't mark TREE_NOTHROW differences.
+ * lto.c (lto_fixup_tree): New.
+ (lto_fixup_state): New.
+ (lto_fixup_state_aux): New.
+ (free_decl): New.
+ (lto_fixup_decls): New.
+ (lto_main): Call lto_fixup_decls.
+
+2008-10-02 Ollie Wild <aaw@google.com>
+
+ * lang.opt (fltrans): Moved from common.opt. Remove RejectNegative
+ and Init.
+ (fwpa): Moved from common.opt. Remove RejectNegative and Init.
+ * lto-lang.c (lto_post_options): Add validation and fixups for
+ -fltrans and -fwpa.
+
+2008-10-02 Rafael Espindola <espindola@google.com>
+
+ * lto-symtab.c (lto_symtab_merge_var, lto_symtab_merge_fn,
+ lto_symtab_merge_decl): Return void.
+ (lto_symtab_prevailing_decl): New.
+
+2008-09-30 Rafael Espindola <espindola@google.com>
+
+ * lto-symtab.c (lto_symtab_compatible): Remove the check for already
+ defined symbols.
+ (lto_symtab_overwrite_decl): Copy LTO_DECL_RESOLUTION.
+ (lto_symtab_merge_decl): Store symbol resolution in LTO_DECL_RESOLUTION.
+ Check for already defined symbols.
+ * lto-tree.h (lang_decl): Remove dummy and add resolution fields.
+ (LTO_IDENTIFIER_RESOLUTION): Remove.
+ (LTO_DECL_RESOLUTION): New.
+
+2008-09-30 Rafael Espindola <espindola@google.com>
+
+ * lto.c (lto_read_decls): Use new input_tree signature.
+
+2008-09-26 Doug Kwan <dougkwan@google.com>
+
+ * lto.c (lto_main): Call lto_fixup_nothrow_decls to fix up function
+ bodies affected by exception attribute merging of DECLs.
+ * lto-symtab.c (lto_symtab_merge_decl): Handle exception attribute
+ merging.
+
+2008-09-25 Rafael Espindola <espindola@google.com>
+
+ * Make-lang.in (PLUGIN_API_H, LTO_TREE_H): New.
+ (lto/lto-lang.o, lto/lto.o, lto/lto-symtab.o) Use LTO_TREE_H.
+ * lto-symtab.c (lto_symtab_compatible): New.
+ (lto_symtab_overwrite_decl): New.
+ (lto_symtab_merge_decl): Refactor to use the above functions
+ and the resolution from lang_identifier.
+ * lto-tree.h: Include plugin-api.h.
+ (lang_identifier): Add resolution.
+ (LTO_IDENTIFIER_RESOLUTION): New.
+
+2008-09-25 Ollie Wild <aaw@google.com>
+
+ * lang.opt (fltrans-output-list=): New option.
+ * lto.c (lto_execute_ltrans): Output file names to ltrans_output_list.
+
+2008-09-25 Rafael Espindola <espindola@google.com>
+
+ * lto.c (lto_resolution_read): Initialize ret;
+
+2008-09-24 Ollie Wild <aaw@google.com>
+
+ * lto.c (sys/mman.h): Move include.
+ (lto_wpa_write_files): Return a list of written files.
+ (lto_execute_ltrans): New function.
+ (lto_main): Call lto_execute_ltrans.
+ (ltrans-driver): New file.
+ * lto-lang.c (DEFAULT_LTRANS_DRIVER): New macro.
+ (DEAULT_LTRANS_DRIVER_LEN): New macro.
+ (lto_init_options): Initialize ltrans_driver.
+ (lto_handle_option): Fix incorrect default output value.
+ * lang.opt (fltrans-driver=): New option.
+ * Make-lang.in (LTRANS_DRIVER_INSTALL_NAME): New variable.
+ (lto.install-common): Add lto/ltrans-driver.
+
+2008-09-24 Rafael Espindola <espindola@google.com>
+
+ * Make-lang.in (LTO_OBJS): Add lto/common.o.
+ (lto/lto.o): Depend on lto/common.h.
+ (lto/common.o): New.
+ * lang.opt (resolution): New.
+ * lto-lang.c (resolution_file_name): New.
+ (lto_handle_option): Handle OPT_resolution.
+ * lto-symtab.c (lto_symtab_merge_decl): Add a resolution argument.
+ (lto_symtab_merge_var,lto_symtab_merge_fn): Add a resolution argument.
+ pass it to lto_symtab_merge_decl.
+ * lto.c: Include common.h.
+ (lto_read_decls): Add resolutions and resolutions_size arguments.
+ Initialize data_in.globals_resolution and
+ data_in.globals_resolution_size.
+ (index_and_symbol_resolution): New.
+ (lto_resolution_read): New.
+ (lto_file_read): Add argument resolution_file.
+ Read resolution.
+ * lto.h (resolution_file_name): New.
+
+2008-09-23 Rafael Espindola <espindola@google.com>
+
+ * common.c: Update description.
+ * common.h: Update description.
+
+2008-09-23 Rafael Espindola <espindola@google.com>
+
+ * common.c: Moved from lto-plugin.
+ * common.h: Moved from lto-plugin.
+
+2008-09-22 Doug Kwan <dougkwan@google.com>
+
+ * lto.c (VEC(bitmap,heap)): Declare.
+ (lto_materialize_function): Handle WAP mode specially.
+ (lto_add_inline_clones): New.
+ (lto_add_all_inlinees): Changle algorithm and to use bitmaps. Also
+ return a bitmap of inlined decls.
+ (lto_wpa_write_files): Handle all DECLs brought in by inlining.
+ (lto_main): Call reset_inline_failed to reset inlining states.
+ Check call-graph after WPA inlining.
+ * lto-lang.c (lto_init): Do not clear flag_generate_lto
+ unconditionally.
+
+2008-09-19 Doug Kwan <dougkwan@google.com>
+
+ lto.c (lto_main): Remove unsued wrapper code.
+ lang-specs.h (@lto): Use lto1_options instead of cc1_options.
+
+2008-09-19 Rafael Espindola <espindola@google.com>
+
+ * lto-symtab.c: Include lto-tree-in.h.
+ * lto-tree.h (lto_symtab_merge_var, lto_symtab_merge_fn): Remove.
+ * lto.h (lto_symtab_merge_var, lto_symtab_merge_fn): Remove
+ * Make-lang.in (lto/lto-symtab.o): Add lto-tree-in.h.
+
+2008-09-17 Paolo Bonzini <bonzini@gnu.org>
+ Rafael Avila de Espindola <espindola@google.com>
+
+ * lto-lang.c (COMPOUND_LITERAL_EXPR_DECL_STMT,
+ COMPOUND_LITERAL_EXPR_DECL): Remove.
+ (emit_local_var): Remove.
+ (lto_expand_expr): Remove.
+ (lto_staticp): Remove.
+ (LANG_HOOKS_EXPAND_EXPR): Remove.
+ (LANG_HOOKS_STATICP): Remove.
+
+2008-09-11 Diego Novillo <dnovillo@google.com>
+
+ * lto-lang.c: Include except.h and libfuncs.h.
+ (lto_init_eh): New.
+ (lto_init): Call it.
+ Set flag_generate_lto to 0.
+ * Make-lang.in (lto-lang.o): Add dependency on except.h
+ and libfuncs.h.
+
+2008-09-09 Bill Maddox <maddox@google.com>
+
+ * lto-lang.c: Include header file expr.h.
+ (COMPOUND_LITERAL_EXPR_DECL_STMT,
+ COMPOUND_LITERAL_EXPR_DECL): Copied from c-common.h.
+ (emit_local_var): Copied from c-semantics.c.
+ (lto_expand_expr, lto_staticp): Copied from c_expand_expr
+ and c_staticp in c-common.c.
+ (LANG_HOOKS_EXPAND_EXPR,LANG_HOOKS_STATICP): Redefined.
+
+2008-09-08 Diego Novillo <dnovillo@google.com>
+
+ * lto-lang.c (lto_global_bindings_p): Return 1 during
+ IPA passes.
+
+2008-09-07 Diego Novillo <dnovillo@google.com>
+
+ * lto.c: Tidy formatting.
+
+2008-08-04 Bill Maddox <maddox@google.com>
+
+ * lto-symtab.c (lto_symtab_merge_decl): Add comment.
+
+2008-09-03 Doug Kwan <dougkwan@google.com>
+
+ lto.c (lto_add_all_inlinees): Reset FAILED_REASON of edges to
+ CIF_OK instead of NULL.
+
+2008-09-02 Diego Novillo <dnovillo@google.com>
+ Simon Baldwin <simonb@google.com>
+
+ * lto-lang.c (lto_type_for_size): Rewrite. Adapt from
+ c_common_type_for_size.
+ (lto_type_for_mode): Remove ATTRIBUTE_UNUSED markers.
+ (lto_init): Call linemap_add.
+ (signed_and_unsigned_types): Remove.
+
+2008-08-29 Diego Novillo <dnovillo@google.com>
+
+ * lto-lang.c (handle_noreturn_attribute): New local function.
+ (handle_const_attribute): New local function.
+ (handle_malloc_attribute): New local function.
+ (handle_pure_attribute): New local function.
+ (handle_novops_attribute): New local function.
+ (handle_nonnull_attribute): New local function.
+ (handle_nothrow_attribute): New local function.
+ (handle_sentinel_attribute): New local function.
+ (handle_type_generic_attribute): New local function.
+ (handle_format_attribute): New local function.
+ (handle_format_arg_attribute): New local function.
+ (lto_attribute_table): Declare.
+ (lto_format_attribute_table): Declare.
+ (lto_init_attributes): New local function.
+ (lto_define_builtins): Call it.
+ Call targetm.init_builtins and build_common_builtin_nodes.
+ (LANG_HOOKS_COMMON_ATTRIBUTE_TABLE): Define.
+ (LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE): Define.
+
+2008-08-28 Diego Novillo <dnovillo@google.com>
+
+ * Make-lang.in (lto-lang.o): Replace tree-gimple.h with
+ $(GIMPLE_H).
+ (lto-symtab.o): Add dependency on $(GIMPLE_H).
+ * lto-lang.c: Include gimple.h instead of tree-gimple.h.
+ * lto-symtab.c: Include gimple.h.
+ * lto-tree.h (chain_next): Replace GENERIC_NEXT with
+ TREE_CHAIN.
+
+2008-08-27 Doug Kwan <dougkwan@google.com>
+
+ * lto.c (vec.h, bitmap.h, pointer-set.h, ipa-prop.h, ggc.h,
+ gt-lto-lto.h): New includes.
+ (lto_materialize_function): Do not read in function body in WPA mode.
+ Format a line to fit in 80 columns.
+ (lto_cgraph_node_sets): New garbage collected variable.
+ (lto_1_to_1_map, lto_add_all_inlinees, lto_wpa_write_files):
+ New functions.
+ (lto_main): Initialize bitmap obstack. Add code to handle WPA mode.
+ * Make-lang.in (LTO_H): Replace filename lto-section-in.h with
+ variable LTO_SECTION_IN_H.
+ (lto/lto.o): Include gt-lto-lto-c.h ggc.h ,VEC_H, BITMAP_H,
+ pointer-set.h and IPA_PROP_H. Also replace filename lto-section-in.h
+ with variable LTO_SECTION_IN_H.
+ * config-lang.in (gtfiles): Add lto/lto.c.
+ * lto-symtab.c (lto_symtab_merge_decl): Set DECL_CONTEXT of
+ merged DECL_RESULT correctly.
+
+2008-08-26 Bill Maddox <maddox@google.com>
+
+ * lto-lang.c Include tree-gimple.h.
+ (lto_mark_addressable): Call mark_addressable rather than
+ asserting.
+ (lto_post_options): Suppress debug info generation.
+ * Make-lang.in: Add dependency of lto-lang.o on tree-gimple.h.
+
+2008-08-25 Bill Maddox <maddox@google.com>
+
+ * lto-symtab.c (lto_symtab_merge_decl): Remove a suspect
+ assertion and leave an explanatory comment in its place.
+
+2008-08-21 Doug Kwan <dougkwan@google.com>
+
+ * lto.c (preload_common_nodes): Call lto_get_common_nodes to get a list
+ of common nodes instead of computing locallly.
+ (lto_read_in_decl_state): New.
+ (lto_read_decls): Change code for udpate in struct lto_decl_header.
+ Read global and per-function in-decl states.
+ * Make-lang.in (LTO_H): Update dependency.
+ (lto/lto.o): Same.
+ (lto-symtab.c): Merge (revision 139039)
+ * lto-symtab.c (lto_symtab_merge_decl): Merge DECL_RESULT.
+
+2008-08-21 Rafael Espindola <espindola@google.com>
+
+ * config-lang.in (target_libs): New.
+
+2008-08-20 Bill Maddox <maddox@google.com>
+
+ * lto.c (current_lto_file): Remove GTY marker from static
+ variable. Remove include of file gt-lto-lto.h.
+ * Make-lang.in: Remove dependency of lto/lto.o on
+ gt-lto-lto.h.
+ * lto-elf.c (lto_file_close): Removed.
+ (lto_elf_file_open): Use XCNEW instead of GGC_CNEW to
+ allocate lto_elf_file object.
+ (lto_elf_file_close): Free lto_elf_file object after close.
+ * lto.h (struct lto_file_struct): Remove GTY marker.
+ * config-lang.in: Remove lto/lto.h and lto/lto.c from
+ gtfiles.
+
+2008-08-20 Bill Maddox <maddox@google.com>
+
+ * lto.c (lto_read_decls): Provide dummy argument to input_tree
+ to conform to its new signature.
+ * lto-symtab.c (lto_symtab_merge_decl): Do not invoke ggc_free
+ on discarded node here, now called in global_vector_fixup.
+
+2008-08-09 Bill Maddox <maddox@google.com>
+
+ * lto.c (preload_common_nodes): Verify that fileptr_type_node
+ has not been set to a front-end-specific value.
+
+2008-08-05 Doug Kwan <dougkwan@google.com>
+
+ * Make-lang.in (lto-symtab.o): Add missing dependencies to fix
+ build breakage.
+
+2008-07-30 Bill Maddox <maddox@google.com>
+
+ * lto.c (lto_materialize_function): Call lto_original_decl_name.
+ Remove obsolete comments.
+ (lto_read_decls): Remove initialization of deleted field data_in.global.
+ Tidy up comments.
+ (lto_main): Remove redundant initialization of section_hash_table.
+ * lto-elf.c: Removed obsolete comments.
+ * lto.h: Tidy up comments.
+ * lto-symtab.c (lto_least_common_multiple): New function.
+ (lto_symtab_merge_decl): Merge variable alignments in some cases.
+ Tidy up comments.
+
+2008-07-25 Diego Novillo <dnovillo@google.com>
+ Bill Maddox <maddox@google.com>
+
+ * lto.c: Re-order include files.
+ Include lto-section-out.h.
+ (preload_common_nodes): Add debugging output.
+ Add new local INDEX_TABLE.
+ Call preload_common_node.
+ * Make-lang.in (lto.o): Add dependency on lto-section-out.h
+
+2008-07-13 Bill Maddox <maddox@google.com>
+
+ * lto.c (lto_read_decls): Cast pointer to const char * to avoid
+ unwanted scaling during pointer addition.
+
+2008-07-11 Bill Maddox <maddox@google.com>
+ Diego Novillo <dnovillo@google.com>
+
+ * lto.c (lto_read_decls): Fix C++ compatibility warnings.
+ Make code const-correct.
+ (lto_file_read): Fix C++ compatibility warnings.
+ (lto_read_section_data): Fix C++ compatibility warnings.
+ (lto_get_section_data): Use CONST_CAST to avoid warning when
+ const pointer passed to free.
+ * lto-elf.c (lto_elf_build_section_table): Fix C++
+ compatibility warnings.
+ (lto_elf_append_data): Fix C++ compatibility warnings. Use CONST_CAST
+ to avoid warning assigning const pointer to d_buf field of Elf_Data.
+ (lto_get_current_out_file): Fix C++ compatibility warnings.
+
+2008-07-11 Diego Novillo <dnovillo@google.com>
+
+ * Make-lang.in (lto-warn): Define.
+
+2008-07-03 Simon Baldwin <simonb@google.com>
+
+ * lto.c (lto_read_decls): Wrapped debug-only data items within #ifdef
+ LTO_STREAM_DEBUGGING.
+
+2008-06-27 Ollie Wild <aaw@google.com>
+
+ * lto-elf.c (lto-section-out.h): New include.
+ (struct lto_elf_file): Remove bits member. Add scn, shstrtab_stream,
+ and data members.
+ (cached_file_attrs): New static variable.
+ (lto_elf_get_shdr, lto_elf_free_shdr): Remove elf_file parameter.
+ Use cached_file_attrs for checking bits.
+ (lto_elf_build_section_table): Remove elf_file argument from
+ lto_elf_get_shdr and lto_elf_free_shdr calls.
+ (DEFINE_INIT_SHDR): New macro.
+ (init_shdr32, init_shdr64): New functions defined via the
+ DEFINE_INIT_SHDR macro.
+ (lto_elf_begin_section_with_type): New function.
+ (lto_elf_begin_section): New function.
+ (lto_elf_append_data): New function.
+ (lto_elf_end_section): New function.
+ (DEFINE_VALIDATE_EHDR): New macro.
+ (validate_ehdr32, validate_ehdr64): New functions defined via the
+ DEFINE_VALIDATE_EHDR macro.
+ (validate_file): New function.
+ (DEFINE_INIT_EHDR): New macro.
+ (init_ehdr32, init_ehdr64): New functions defined via the
+ DEFINE_INIT_EHDR macro.
+ (init_ehdr): New function.
+ (lto_elf_file_open): Add support for writable files. Move some
+ validation logic to validate_file.
+ (lto_elf_file_close): Add support for writable files. Write file data
+ and free data blocks.
+ (current_out_file): New static variable.
+ (lto_set_current_out_file): New function.
+ (lto_get_current_out_file): New function.
+ * lto.c (lto_main): Add writable argument to lto_elf_file_open calls.
+ Add temporary initialization for testing ELF serialization.
+ * lto.h (lto-section-out.h): New include.
+ (struct lto_file_struct): Slight modification to comment.
+ (lto_elf_file_open): Add writable parameter.
+ (lto_elf_begin_section): New function declaration.
+ (lto_elf_append_data): New function declaration.
+ (lto_elf_end_section): New function declaration.
+ (lto_set_current_out_file, lto_get_current_out_file): New function
+ declarations.
+ * lto-lang.c (LANG_HOOKS_BEGIN_SECTION): Set as lto_elf_begin_section.
+ (LANG_HOOKS_APPEND_DATA): Set as lto_elf_append_data.
+ (LANG_HOOKS_END_SECTION): Set as lto_elf_end_section.
+ * Make-lang.in (LTO_H): Add lto-section-out.h.
+
+2008-06-12 Ollie Wild <aaw@google.com>
+
+ * lto.h (struct lto_file_vtable_struct): Remove.
+ (struct lto_file_struct): Remove vtable member.
+ * lto-elf.c (lto_file_init): Remove vtable argument.
+ (lto_elf_map_optional_lto_section): Remove.
+ (lto_elf_unmap_section): Remove.
+ (lto_elf_file_vtable): Remove.
+ (lto_elf_file_open): Remove lto_elf_file_vtable argument from
+ lto_file_init call.
+ (lto_elf_find_section_data): Remove.
+
+2008-06-11 Ollie Wild <aaw@google.com>
+
+ * lto.c (lto_file_read): Add const qualifier to data variable.
+
+2008-06-11 Diego Novillo <dnovillo@google.com>
+
+ Merge from lto-streamber sub-branch.
+
+ 2008-06-04 Ollie Wild <aaw@google.com>
+
+ * lto.c: Remove inclusion of dwarf2.h and dwarf2out.h.
+ * Make-lang.in (lto.o): Remove dependency on dwarf2.h.
+
+ 2008-05-28 Bill Maddox <maddox@google.com>
+
+ Replace the DWARF reader in the LTO front-end.
+
+ * lto.c: Include lto-tree-in.h, lto-tags.h.
+ (enum DWARF2_class, DW_cl_constant, struct
+ DWARF2_form_data, struct lto_context,
+ lto_fd_init, lto_info_fd_init,
+ lto_abbrev_fd_init, lto_info_fd_close,
+ lto_file_init, lto_file_close,
+ lto_file_corrupt_error, lto_abi_mismatch_error,
+ LTO_CHECK_INT_VAL, LTO_READ_TYPE,
+ lto_read_uleb128, lto_read_sleb128,
+ lto_read_initial_length, lto_abbrev_read_attrs,
+ lto_abbrev_read, lto_abbrev_read_lookup,
+ lto_read_section_offset,
+ lto_read_comp_unit_header, find_cu_for_offset,
+ lto_get_file_name,
+ lto_resolve_reference,lto_read_form,
+ attribute_value_as_int,
+ make_signed_host_wide_int,
+ attribute_value_as_constant, lto_cache_hash,
+ lto_cache_eq, lto_cache_store_DIE,
+ lto_cache_lookup_DIE, lto_find_integral_type,
+ lto_find_integral_type_1,
+ LTO_BEGIN_READ_ATTRS_UNCHECKED,
+ LTO_BEGIN_READ_ATTRS, LTO_END_READ_ATTRS,
+ lto_unsupported_attr_error, lto_get_identifier,
+ lto_read_referenced_type_DIE,
+ lto_read_compile_unit_DIE,
+ lto_read_array_type_DIE,
+ lto_read_structure_union_class_type_DIE,
+ lto_read_enumerator_DIE,
+ lto_read_enumeration_type_DIE,
+ lto_read_only_for_child_DIEs,
+ lto_read_only_for_child_DIEs,
+ lto_read_member_DIE, lto_read_abbrev,
+ lto_read_variable_formal_parameter_constant_DIE,
+ lto_get_body): Removed.
+ (preload_common_nodes): New function.
+ (lto_read_decls): Convert for new global streamer.
+ (lto_materialze_file_data,
+ lto_read_subroutine_type_subprogram_die,
+ lto_read_unspecified_parameters_DIE,
+ lto_read_typedef_DIE,
+ lto_read_pointer_reference_type_DIE,
+ lto_read_subrange_type_DIE,
+ lto_read_base_type_DIE,
+ lto_read_const_volatile_restrict_type_DIE,
+ lto_read_namespace_DIE,
+ lto_read_unspecified_type_DIE, lto_read_DIE,
+ lto_read_child_DIEs, lto_collect_child_DIEs):
+ Removed.
+ (lto_info_read, lto_set_cu_context): Removed.
+ (lto_file_read): Convert for new global streamer.
+ (lto_resolve_type_ref, lto_read_DIE_at_ptr,
+ lto_resolve_var_ref, lto_resolve_fn_ref,
+ lto_resolve_field_ref, lto_resolve_typedecl_ref,
+ lto_resolve_namespacedecl_ref): Removed.
+ (lto_file_init, lto_file_close): Moved to lto-elf.c.
+ * lto-tree.h (lto_symtab_merge_var,
+ lto_symtab_mergee_fun): Declare here.
+ * lto-elf.c (lto_file_init, lto_file_close): Moved from lto.c.
+ (lto_elf_file_open): Removed code to read DWARF debug sections.
+ * lto.h (lto_context, DWARF2_attr, DWARF2_abbrev,
+ DWARF2_CompUnit, lto_die_ptr,
+ lto_die_cache_entry, lto_fd, lto_info_fd,
+ lto_abbrev_fd): Removed.
+ (lto_file): Removed debug_info and debug_abbrev fields.
+ (lto_ref): Removed.
+ (lto_file_init, lto_file_close,
+ lto_resolve_type_ref, lto_resolve_var_ref,
+ lto_resolve_fn_ref, lto_resolve_field_ref,
+ lto_resolve_typedecl_ref,
+ lto_resolve_namespacedecl_ref,
+ lto_get_file_name): Removed declarations.
+ (lto_symtab_merge_var, lto_symtab_merge_fn):
+ Declarations moved to lto-tree.h.
+ * lto-symtab.c (lto_compatible_attributes_p):
+ Lobotomize this, as it barfs on "Hello, world!".
+ * lto-section-out.c: Include lto-tree-out.h.
+ (lto_hash_global_slot_node,
+ lto_eq_global_slot_node, preload_common_nodes,
+ write_global_stream, write_global_references):
+ New functions.
+ (produce_asm_for_decls): Convert for new global streamer.
+ * lto-section-out.h (lto_hash_global_slot_node,
+ lto_eq_global_slot_node): Declare.
+
+2008-06-07 Kenneth Zadeck <zadeck@naturalbridge.com>
+ Jan Hubicka <jh@suse.cz>
+
+ * lto.c (sys/mman.h, tree-pass.h): New includes.
+ (lto_materialize_constructors_and_inits,
+ lto_materialize_function): Keeps length of section.
+ (lto_materialize_cgraph): Removed.
+ (lto_read_decls): Initialize fd field.
+ (lto_file_read): Different return type and removed much code to
+ lto_main.
+ (page_mask): New variable.
+ (lto_read_section_data, get_section_data, free_section_data): New
+ functions.
+ (lto_main): Now calls pass manager, sets the hooks so that the ipa
+ passes can get the section data.
+
+2008-05-27 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto.h (lto_read_decls): Made local.
+ (lto_input_function_body, lto_input_constructors_and_inits,
+ lto_input_cgraph): Declarations moved to lto-section-in.h.
+ * lto-section-in.c: Moved to .. .
+ * lto-cgraph-in.c: Ditto.
+ * lto-section-in.h: Ditto.
+ * lto-function-in.c: Ditto.
+ * lto-lang.c (lto_handle_option): Added ATTRIBUTE_UNUSED to parms.
+ (lto_insert_block): Removed.
+ (LANG_HOOKS_INSERT_BLOCK): Removed.
+ * Make-lang.in (lto-cgraph-in.o, lto-function-in.o,
+ lto-section-in.o): Rules moved to lto/Makefile.in.
+
+
+2008-05-16 Ollie Wild <aaw@google.com>
+
+ * lto-lang.c (tree-inline.h): Include.
+ (lto_post_options): New function.
+ (LANG_HOOKS_POST_OPTIONS): Define.
+ * lto-cgraph-in.c (overwrite_node): Set node->global.insns.
+ * lto-function-in.c (input_bb): Set TREE_BLOCK (stmt).
+
+2008-05-13 Diego Novillo <dnovillo@google.com>
+
+ * lto-function-in.c (input_ssa_names): Call
+ make_ssa_name_fn instead of make_ssa_name.
+
+2008-05-12 Diego Novillo <dnovillo@google.com>
+
+ * lto-cgraph-in.c (overwrite_node): Update references to
+ inline summary fields.
+ * lto-function-in.c (input_expr_operand): Do not handle
+ STRUCT_FIELD_TAG.
+
+2008-05-09 Ollie Wild <aaw@google.com>
+
+ * lang.opt: New file.
+ * lto-lang.c (lto_init_options): New function.
+ (lto_handle_option): New function.
+ (lto_init): Move initialization of flag_unit_at_a_time to
+ lto_init_options.
+ (LANG_HOOKS_INIT_OPTIONS): Define.
+ (LANG_HOOKS_HANDLE_OPTION): Define.
+
+2008-04-29 Ollie Wild <aaw@google.com>
+
+ * lto.c (lto_read_namespace_DIE): New function.
+ (lto_read_DIE): Add lto_read_namespace_DIE callback. Cache
+ NAMESPACE_DECL DIE's.
+ (lto_resolve_namespacedecl_ref): New function.
+ * lto.h (lto_resolve_namespacedecl_ref): New function.
+ * lto-section-in.c (lto_read_decls): Read namespace declarations.
+ * lto-section-in.h (struct lto_file_decl_data): Add namespace_decls
+ and num_namespace_decls.
+ * lto-function-in.c (input_expr_operand): Add NAMESPACE_DECL case.
+ * lto-lang.c (lto_init_ts): New function.
+ (LANG_HOOKS_INIT_TS): Set as lto_init_ts.
+
+2008-04-16 Ollie Wild <aaw@google.com>
+
+ * lto-function-in.c (input_type_ref): Updated function description.
+
+2008-04-16 Ollie Wild <aaw@google.com>
+
+ * lto-function-in.c (input_type_ref_1): New function.
+ (input_type_ref): Split into two functions.
+ (input_function): Add support for type contexts.
+
+2008-04-16 Ollie Wild <aaw@google.com>
+
+ * lto.c (lto_materialize_function): Use DECL_ASSEMBLER_NAME to compute
+ section name
+
+2008-04-16 Ollie Wild <aaw@google.com>
+
+ * lto.c (lto_read_compile_unit_DIE): Add DW_LANG_C_plus_plus to the
+ list of supported languages.
+
+2008-03-25 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ Merge with mainline @133491.
+
+2008-03-05 Kenneth Zadeck <zadeck@naturalbridge.com>
+ Jan Hubicka <jh@suse.cz>
+
+ * lto.c (lto_info_fd_init, lto_info_fd_close): Get rid of
+ fd->unmaterialized_fndecls.
+ (lto_get_file_name, lto_materialize_cgraph): New function.
+ (lto_materialize_constructors_and_inits,
+ lto_materialize_function): Read info directly from elf file.
+ (lto_file_read): Made local and initialize dictionary so that
+ other lto sections can be read without reprocessing the elf file.
+ (lto_main): Read all functions after all files have been processed
+ for their types, globals and cgraph.
+ * Make-lang.in (lto.o, lto-cgraph-in.c, lto-section-in): Changed
+ dependencies.
+ * lto-elf.c (lto_elf_file): Removed strtab, symtab fields.
+ (hash_name, eq_name, lto_elf_build_section_table): New functions.
+ (lto_elf_read_symtab): Removed function.
+ (lto_elf_file_open): Removed call to lto_elf_read_symtab.
+ * lto.h (lto_info_fd_struct): Removed unmaterialized_fndecls.
+ (lto_file_read): Made local.
+ (lto_get_file_name, lto_elf_build_section_table,
+ lto_input_cgraph):
+ New function.
+ * lto-section-in.c (lto_read_section_data, lto_get_section_data):
+ New functions.
+ (lto_read_decls): Get the file name.
+ * lto-cgraph-in.c: New file.
+ * lto-function-in.c (tag_to_expr): Stops at LTO_tree_last_tag.
+ (input_expr_operand, lto_read_body): Set lto_debug_context.tag_names.
+ (input_labels): Fixed latent sizeof issue.
+ (input_function): Build stmt array to set call sites into cgraph
+ edges.
+ (lto_read_body): Reset cfun->curr_properties.
+ * lto_section_in.h (lto_section_slot): New structure.
+ (section_hash_table.lto_file_decl_data): New field.
+
+
+2008-02-09 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto.c (lto_read_variable_formal_parameter_const): Remove code to
+ reconstruct static initializers.
+ (lto_get_body, lto_materialize_function): Add lto_section_type as
+ a parameter.
+ (lto_materialize_constructors_and_inits,
+ lto_materialize_file_data): New function.
+ (lto_materialize_function,
+ lto_read_subroutine_type_subprogram_DIE): Renamed unmap_fn_body to
+ unmap_section and map_fn_body to map_section.
+ (lto_set_cu_context): Process functions and static inits
+ differently.
+ * Make-lang.in (LTO_H, lto/lto-function-in.o,
+ lto/lto-section-in.o): Update dependencies.
+ * lto/lto-elf.c (lto_elf_map_optional_lto_section): Add
+ lto_section_type parameter.
+ (lto_elf_unmap_fn_body): Renamed to lto_elf_unmap_section.
+ * lto.h (lto_file_vtable_struct): Removed two of the fields and
+ renamed the other two so that there is only one map function and
+ one unmap function and each takes a section type parameter.
+ (lto_read_function_body): Renamed to lto_input_function_body and
+ added file_data parameter.
+ (lto_read_var_init): Removed.
+ (lto_input_constructors_and_inits): New function.
+ * lto-section-in.c (lto_read_decls): New function.
+ * lto-function-in.c (data_in): Moved fields field_decls, fn_decls,
+ var_decls, type_decls, types to lto_file_decl_data.
+ (input_type_ref, input_expr_operand, lto_read_body): Get
+ field_decls, fn_decls, var_decls, type_decls, types from different
+ structure.
+ (input_globals, input_constructor, lto_read_var_init): Removed.
+ (input_constructors_or_inits): New function.
+ (lto_read_function_body, lto_input_constructors_and_inits):
+ Renamed to lto_input_function_body and takes file_data parameter.
+ * lto-section-in.h (lto_file_decl_data): New structure.
+
+2008-01-28 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-function-in.c (input_globals.c): Changed input type to
+ lto_function_header.
+ (input_bb): Removed code to deserialize the stmt number.
+ (input_function): Renumber all stmts after they are input.
+ (lto_read_body, lto_read_function_body, lto_read_var_init):
+ Changed to used new header format and enum section_type.
+ *lto-lang.c (success): Removed.
+
+2008-01-28 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-elf.c (lto_elf_lookup_sym): Remove unused function.
+ (lto_elf_free_sym): Likewise.
+
+ * lto-elf.c (lto_elf_read_var_init): Remove unused function.
+ (lto_elf_build_init): Likewise.
+
+2008-01-14 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c: Renamed to lto-function-in.c.
+ (input_1_unsigned): Moved to lto-section-in.c and renamed
+ lto_input_1_unsigned.
+ (input_uleb128): Moved to lto-section-in.c and renamed
+ lto_input_uleb128.
+ (input_widest_uint_uleb128): Moved to lto-section-in.c and renamed
+ lto_input_widest_uint_uleb128.
+ (input_sleb128): Moved to lto-section-in.c and renamed
+ lto_input_sleb128.
+ (input_integer): Moved to lto-section-in.c and renamed
+ lto_input_integer.
+ (debug_in_fun): Moved to lto-section-in.c and renamed
+ lto_debug_in_fun.
+ (input_block): Moved to lto-section-in.h and renamed
+ lto_input_block.
+ (input_expr_operand): Fixed to allow lists with more than one
+ element.
+ * lto-section-in.h: New file.
+ * lto-section-in.c: New file with changes from above.
+ * Make-lang.in (lto-read.o): Renamed lto-function-in.c.
+ (lto-section-in.o): New rule.
+
+2007-12-29 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-read.c (input_expr_operand): Mark static and external
+ VAR_DECLs as needed.
+
+2007-12-29 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-read.c (input_integer): Use the correct shift amount.
+
+2007-12-29 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-lang.c (lto_pushdecl): Do nothing instead of aborting.
+ (LANG_HOOKS_NAME): Define.
+
+2007-12-27 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_find_integral_type): Define as a macro. Rename the
+ original function to...
+ (lto_find_integral_type_1): ...this. Consult UNSIGNEDP if we
+ don't have a base type.
+ (lto_read_enumeration_type_DIE): Examine the values of the
+ enumeration to determine whether we can use an unsigned type for
+ the base type of the enumeration.
+
+2007-12-24 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_structure_union_class_type_DIE): Set TYPE_MODE
+ and TYPE_ALIGN on UNION_TYPEs as soon as possible.
+
+2007-12-22 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-lang.c (lto_types_compatible_p): New function.
+ (LANG_HOOKS_TYPES_COMPATIBLE_P): Define.
+
+2007-12-22 Nathan Froyd <froydnj@codesourcery.com>
+ Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (input_expr_operand): Fixed uninitialize var warning.
+ (input_local_vars): Read in DECL_INITIAL and context for local
+ statics that need to be put in unexpanded_vars_list.
+
+2007-12-21 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-read.c (input_real): Use a separate null-terminated buffer
+ for calling real_from_string.
+ (input_expr_operand): If we take the address of a FUNCTION_DECL,
+ tell cgraph that it's needed.
+
+2007-12-19 Doug Kwan <dougkwan@google.com>
+
+ * lto.c (lto_read_base_type_DIE): Handle complex integer types.
+
+2007-12-18 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_DIE): Call lto_read_only_for_child_DIEs instead.
+ (lto_file_read): Reset the members of 'context' every time we read
+ a toplevel DIE, with special attention to last_param_type.
+
+2007-12-18 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_subroutine_type_subprogram_DIE): Initialize
+ 'declaration'. Set the assembler name for non-public functions.
+
+2007-12-17 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto_read.c (data_in.unexpanded_indexes): New array.
+ (input_local_var): Added code to read in unexpanded_var_list
+ indexes for variables. Only read in DECL_CHAIN field for
+ parameters.
+ (input_local_vars): Added code to rebuild unexpanded_var_list in
+ order using unexpanded_indexes.
+ (input_function): Added code to set DECL_CONTEXT for functions.
+
+2007-12-13 Doug Kwan <dougkwan@google.com>
+
+ * lto.c (lto_read_pointer_reference_type_DIE): Handle optional name
+ in pointer and reference types.
+
+2007-12-13 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-read.c (input_expr_operand): Use DECL_RESULT when reading a
+ RESULT_DECL.
+
+2007-12-13 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_array_type_DIE): Return the cached DIE if we've
+ already read the DIE.
+ (lto_get_body): New function, split out from...
+ (lto_materialize_function): ...here. Call it.
+ (lto_read_subroutine_type_subprogram_DIE): Call lto_get_body to
+ determine DECL_EXTERNAL.
+ * lto-symtab.c (lto_symtab_merge_decl): Merge the DECL_RESULTs of
+ FUNCTION_DECLs when necessary. Use the type of the actual
+ function definition if we are unable to easily merge types. Ignore
+ spurious DECL_MODE mismatches on VAR_DECLs. Merge DECL_MODEs when
+ necessary.
+
+2007-12-13 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-lang.c (LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS): Define.
+
+2007-12-12 Bill Maddox <maddox@google.com>
+
+ Revert
+ 2007-12-07 Bill Maddox <maddox@google.com>
+
+ * lto.c (lto_str_fd_init): New function.
+ (lto_str_fd_close): New function.
+ (lto_file_init): Call lto_str_fd_init.
+ (lto_file_close): Call lto_str_fd_close.
+ (lto_str_read): New function. Read debug string table.
+ (lto_str_lookup): New function. Get string for debug
+ string table offset.
+ (lto_read_form): Recognize DW_FORM_strp.
+ (lto_file_read): Invoke lto_str_read.
+
+ * lto-elf.c (lto_elf_file_open): Read raw section data
+ for the .debug_str section, if present.
+
+ * lto.h (struct lto_str_fd_struct): New struct.
+ (struct lto_file_struct): Added new field DEBUG_STR
+ to hold the file descriptor for the debug string table.
+
+2007-12-07 Bill Maddox <maddox@google.com>
+
+ * lto.c (lto_str_fd_init): New function.
+ (lto_str_fd_close): New function.
+ (lto_file_init): Call lto_str_fd_init.
+ (lto_file_close): Call lto_str_fd_close.
+ (lto_str_read): New function. Read debug string table.
+ (lto_str_lookup): New function. Get string for debug
+ string table offset.
+ (lto_read_form): Recognize DW_FORM_strp.
+ (lto_file_read): Invoke lto_str_read.
+
+ * lto-elf.c (lto_elf_file_open): Read raw section data
+ for the .debug_str section, if present.
+
+ * lto.h (struct lto_str_fd_struct): New struct.
+ (struct lto_file_struct): Added new field DEBUG_STR
+ to hold the file descriptor for the debug string table.
+
+2007-12-07 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-read.c (input_cfg): Call init_empty_tree_cfg_for_function.
+ Grow the basic_block_info and label_to_block_map vectors if
+ necessary. Read in the block chain.
+
+2007-12-06 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_DIE): Set TYPE_ALIAS_SET where necessary.
+
+2007-12-06 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_form): Add DW_cl_address for DW_AT_const_value.
+
+2007-12-06 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-read.c (input_expr_operand): Don't check for MTAGs.
+ (lto_read_body): Don't declare PROP_alias.
+
+2007-12-06 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-symtab.c (lto_symtab_merge_decl): Handle FUNCTION_DECLs without
+ argument type information.
+
+2007-12-03 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_variable_formal_parameter_constant_DIE): Set
+ TREE_THIS_VOLATILE if the associated type is a volatile type.
+ (lto_materialize_function): Remove call to init_ssa_operands.
+ * lto-read.c (input_expr_operand): Add SSA_NAME_VAR as a referenced
+ variable when reading an SSA_NAME. Do the same when reading a
+ RESULT_DECL, a RETURN_EXPR, or an MTAG.
+ (input_cfg): Call init_ssa_operands.
+ (input_ssa_names): Set the default def of an SSA_NAME if necessary.
+ Move call to init_tree_ssa...
+ (lto_read_body): ...here. Use push_cfun and pop_cfun. Call
+ add_referenced_var on any variables referenced from the body of the
+ function. Inform the rest of the compiler we are in SSA form and
+ inform later passes about the current properties.
+
+2007-11-30 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_materialize_function): Add FIXME.
+
+2007-11-29 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-lang.c (enum built_in_attribute): New enum.
+ (flag_no_builtin, flag_no_nonansi_builtin, flag_isoc94, flag_isoc99,
+ built_in_attributes): New variables.
+ (def_builtin_1): New function.
+ (lto_define_builtins): #define DEF_BUILTIN and include builtins.def.
+
+2007-11-28 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_variable_formal_parameter_constant_DIE): Set
+ DECL_SOURCE_LOCATION for debugging purposes.
+ (lto_read_member_DIE): Set DECL_SOURCE_LOCATION. If we have read a
+ bitfield, use the type specified by the DIE for TREE_TYPE and defer
+ laying out the decl until later.
+ (lto_read_subroutine_type_subprogram_DIE): Compare the function's
+ name with DECL_ASSEMBLER_NAME. Set DECL_SOURCE_LOCATION and
+ TREE_ADDRESSABLE.
+ * lto-read.c (input_expr_operand): Set TREE_ADDRESSABLE on the
+ operand of an ADDR_EXPR.
+ * lto-lang.c (enum lto_builtin_type): New enum.
+ (builtin_type): New typedef.
+ (builtin_types, string_type_node, const_string_type_node,
+ wint_type_node, intmax_type_node, uintmax_type_node,
+ signed_size_type_node): New variables.
+ (def_fn_type, builtin_type_for_size, lto_define_builtins,
+ lto_build_c_type_nodes): New functions.
+ (lto_init): Initialize builtin types.
+ (lto_set_decl_assembler_name): Let the target machine mangle the
+ name if the decl is TREE_PUBLIC, otherwise uniquify it.
+
+2007-11-21 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_variable_formal_parameter_constant_DIE): Don't
+ set TREE_ADDRESSABLE. Do set DECL_COMDAT. Set TREE_READONLY if
+ the type is a constant type. Set the assembler name and inform
+ the rest of the compiler about the new decl if the decl is not
+ public.
+ (lto_read_subroutine_type_subprogram_DIE): Don't check for equivalency
+ of DECL_ASSEMBLER_NAME when determining if we have a builtin. Don't
+ try to read in function bodies for functions that already have bodies.
+ * lto-symtab.c (lto_same_type_p): Check for unbounded array
+ equivalency.
+ (lto_symtab_merge_decl): Don't merge decls that aren't TREE_PUBLIC.
+ Check for whether we matched a builtin function type before calling
+ lto_same_type_p on the generated type. Permit cases where the
+ declaration of an array is unbounded, but the definition is bounded.
+ Don't combine TREE_PUBLIC flags. Copy over DECL_SIZE and
+ DECL_SIZE_UNIT if necessary.
+
+2007-11-16 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (input_expr_operand): Get types right
+ for COMPLEX_CST.
+
+2007-11-16 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (make_new_block, input_cfg): Properly set
+ n_basic_blocks.
+
+2007-11-16 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_array_type_DIE): Handle DIEs with DW_AT_GNU_vector
+ set properly by building a VECTOR_TYPE instead of an ARRAY_TYPE.
+
+2007-11-16 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_base_type_DIE): Use make_bitfield_integer_type to
+ construct the integer type for bitfields.
+
+2007-11-16 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (data_in.current_node_has_loc): Removed.
+ (input_line_info): Returns true if node needs line set.
+ (set_line_info): Always sets line if called.
+ (clear_line_info): Removed reference to current_node_needs_loc.
+ (input_expr_operand): Keeps track locally if current node needs a loc.
+ (input_local_var): Added code to handle DECL_INITIAL for
+ static local vars. Only set loc if necessary.
+
+2007-11-15 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_subroutine_type_subprogram_DIE): Fix thinko'd
+ DECL_CONTEXT.
+
+2007-11-15 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c: Include langhooks.h.
+ (lto_find_integral_type): Rework logic to handle the case where
+ got_byte_size is true, but the bitsize requested and that of the
+ base_type doesn't match.
+ (lto_read_variable_formal_parameter_constant_DIE): Only check for
+ asm_name if we are creating a VAR_DECL.
+ (lto_materialize_function): Set DECL_EXTERNAL if we can't find a
+ definition.
+ (lto_read_subroutine_type_subprogram_DIE): Check for a builtin
+ function reference and use the builtin's decl if so. Set the
+ DECL_CONTEXT of the RESULT_DECL for the function.
+ * lto-lang.c (registered_builtin_fndecls): New variable.
+ (lto_getdecls): Return it.
+ (lto_builtin_function): Chain the new decl onto
+ registered_builtin_fndecls.
+
+2007-11-15 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (process_tree_flags, lto_static_init_local):
+ Renamed to ADD_CLASS_EXPR_FLAG. ADD_CLASS_DECL_FLAG New Macro.
+ (input_line_info, clear_line_info): Fixed new line number code.
+ (input_expr_operand): Added type to SWITCH_EXPR.
+ (lto_read_body): Properly initialized data_in.
+ Clear line info when leaving.
+
+2007-11-13 Diego Novillo <dnovillo@google.com>
+
+ * lto.c (lto_read_variable_formal_parameter_constant_DIE):
+ Initialize ARTIFICIAL.
+ (lto_read_subroutine_type_subprogram_DIE): Initialize
+ SAVED_SCOPE.
+ * lto-read.c (set_line_info): Remove ; from calls to
+ LINEMAP_POSITION_FOR_COLUMN.
+
+2007-11-13 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (input_type_ref): Renamed from get_type_ref.
+ (input_expr_operand, input_local_var): Renamed get_type_ref to
+ input_type_ref.
+ (input_expr_operand): Get the types correct for
+ vector-cst. Get SSA_NAME_DEF_STMT correct for return_exprs.
+
+2007-11-13 Doug Kwan <dougkwan@google.com>
+
+ * lto-read.c (input_widest_uint_uleb128): New function.
+ (input_tree_flags, process_tree_flags, input_line_info,
+ input_expr_operand, input_local_var, input_phi, input_ssa_names):
+ Change to use lto_flags_type and BITS_PER_LTO_FLAGS_TYPES instead of
+ unsigned HOST_WIDE_INT and HOST_BITS_PER_WIDE_INT.
+ (lto_static_init_local): Add code to assert that lto_flags_type is
+ wide enough.
+
+2007-11-13 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_array_type_DIE): Handle DW_AT_GNU_vector.
+ (lto_read_subroutine_type_subprogram_DIE): Handle
+ DW_AT_static_link and DW_AT_specification. Return the
+ specification if present.
+ (lto_read_base_type_DIE): Handle DW_ATE_complex_float.
+
+2007-11-13 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-lang.c: Include target.h.
+ (registered_builtin_types): New variable.
+ (lto_type_for_mode): Increase number of modes handled.
+ (lto_builtin_function): Fix argument list and return the decl.
+ (lto_register_builtin_type): New function.
+ (lto_init): Initialize target builtins and language-independent
+ nodes.
+ (LANG_HOOKS_REGISTER_BUILTIN_TYPE): Define.
+
+2007-11-13 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (input_expr_operand): Added code to properly handle
+ index filed. Added new RANGE_EXPR case.
+
+2007-11-11 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (ADD_FUNC_FLAG): Deleted macro.
+ (data_in): Added current_node_has_loc field.
+ (input_line_info, set_line_info, clear_line_info): Added a support
+ for USE_MAPPED_LOCATION and not adding line numbers to nodes that
+ did not have on on the source side.
+ (input_expr_operand): Make sure that GIMPLE_MODIFY_STMTS get line
+ numbers too.
+
+2007-11-09 Doug Kwan <dougkwan@google.com>
+
+ * lto-read.c (input_expr_operand): Change type of operand 2 of
+ BIT_FIELD_REF expression to be bitsizetype instead of sizetype.
+
+2007-11-09 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c: Include lto-tree.h. Effect small spaces->tabs cleanup.
+ (lto_read_variable_formal_parameter_constant_DIE): Transfer bits
+ from a DW_AT_specification or DW_AT_abstract_origin attribute to
+ the new decl we are creating. Move informing the middle end about
+ the new decl to...
+ (lto_main): ...here. Inform the middle end about global variables
+ after we have read in all the input files.
+ * lto-symtab.c (lto_symtab_merge_decl): We really do need to merge
+ variables with internal linkage, so delete the check for internal
+ linkage. Combine TREE_PUBLIC flags.
+
+2007-11-08 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_subroutine_type_subprogram_DIE): Handle
+ DW_AT_decl_line.
+ * lto-symtab.c (lto_symtab_merge_decl): Handle redefinition of a
+ builtin specially. Move check for attribute compatibility
+ earlier.
+
+2007-11-07 Nathan Froyd <froydnj@codesourcery.com>
+
+ * Make-lang.in (lto/lto.o): Depend on gt-lto-lto.h.
+ * config-lang.in (gtfiles): Add lto.h and lto.c.
+ * lto-elf.c: Include ggc.h.
+ (lto_elf_file_open): Allocate elf_file from GC memory.
+ * lto.c: Include tree-ssa-operands.h and gt-lto-lto.h
+ (lto_info_fd_init): Allocate the die_cache and unmaterialized_fndecls
+ in GC memory.
+ (lto_info_fd_close): Free unmaterialized_fndecls from GC memory.
+ (lto_file_close): Free file from GC memory.
+ (lto_cache_store_DIE): Allocate the new entry in GC memory.
+ (lto_read_member_DIE): Fix declaration.
+ (lto_read_subroutine_type_subprogram_DIE): unmaterialized_fndecls lives
+ in GC memory.
+ (current_lto_file): New variable.
+ (lto_main): Use it.
+ (DWARF2_attr, DWARF2_abbrev, lto_die_ptr, DWARF2_CompUnit,
+ lto_die_cache_entry): Move to...
+ * lto.h: ...here and add GTY markers as appropriate. Delete forward
+ declarations accordingly.
+ (struct lto_file_struct): Declare.
+ (lto_file_vtable): Use it instead of lto_file.
+
+2007-11-06 Alon Dayan <alond@il.ibm.com>
+ Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (process_flags, lto_static_init_local):
+ read flags of VAR_DECL and FUNCTION_DECL of size>1.
+ change global array num_flags_for_code to flags_length_for_code.
+ (set_line_info): Make decls work in USE_MAPPED_LOCATION mode.
+
+2007-11-05 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_structure_union_class_type_DIE): Use proper record
+ layout functions to compute information about the newly constructed
+ type.
+
+2007-11-02 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-read.c (input_expr_operand): Change the LTO_return_expr1
+ case to use DECL_RESULT if necessary.
+
+2007-11-01 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (input_tree_list): Removed.
+ (input_tree_flags): Added parameter to force flags no matter what
+ tree code.
+ (input_expr_operand): Added parameter to input_tree_flags.
+ Added case for IDENTIFIER_NODE and TREE_LIST. Changed ASM to call
+ input_expr_operand rather than input_tree_lists.
+ (input_local_var): Use input_expr_operand to read attributes
+ rather then input_tree_list.
+ (input_phi, input_ssa_names): Added parameter to input_tree_flags.
+
+2007-10-31 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_typedef_DIE): Fix comment typo.
+ (lto_resolve_typedecl_ref): Fetch the referred-to type and build a fake
+ TYPE_DECL for it.
+ * lto-read.c (lto_read_body): Use correct sizes for calculating
+ type_decls_offset and types_offset.
+
+2007-10-30 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-tree.h (union lang_tree_node): Change GTY description to chain
+ with GENERIC_NEXT.
+ * config-lang.in (gtfiles): Add lto-lang.c.
+ * lto-lang.c: Include gt-lto-lto-lang.h.
+ * Make-lang.in (lto/lto-lang.o): Add dependency on gt-lto-lto-lang.h
+ (lto/lto-symtab.o): Depend on LTO_H instead of TREE_H.
+ (lto/lto-read.o): Likewise.
+
+2007-10-29 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (data_in): Added type_decls and current_col fields.
+ (string_slot): New type to hold canonized file name.
+ (hash_string_slot_node, eq_string_slot_node, canon_file_name,
+ input_line_info, set_line_info, clear_line_info): New functions.
+ (file_name_hash_table): New hash table.
+ (input_local_var, input_labels, input_local_vars_index,
+ input_local_var, input_local_vars, input_ssa_names): Reorganized parameters.
+ (input_uleb128): Changed type of byte var.
+ (input_expr_operand): Large number of changes to get line numbers
+ correct. Added TYPE_DECL case.
+ (input_globals): Added code to get TYPE_DECLs processed.
+ (input_local_var): Added code to process line numbers and
+ TREE_CHAIN and DECL_CONTEXT.
+ (input_function, input_constructor): Added call to
+ clear_line_number.
+ (lto_static_init_local): Added code to get line numbers correct.
+ (lto_read_body): Added code to get TYPE_DECLS read and to change
+ parameters to the calls above that had their parms reorganized.
+
+
+2007-10-29 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.h (lto_resolve_typedecl_ref): Declare.
+ * lto.c (lto_resolve_typedecl_ref): New function.
+
+2007-10-29 Mark Mitchell <mark@codesourcery.com>
+ Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_subroutine_type_subprogram_DIE): Read the child
+ DIEs even if we find an abstract origin for this DIE.
+
+2007-10-29 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_subroutine_type_subprogram_DIE): Build the
+ RESULT_DECL slightly earlier. Only remember the decl for later
+ if we successfully merge declarations.
+
+2007-10-24 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (input_expr_operand): Give label_values the proper
+ context and provide switch statements with a default type.
+
+2007-10-23 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-read.c (lto_read_body): Move call to init_ssa_operands...
+ * lto.c (lto_materialize_function): ...to here.
+
+2007-10-22 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.h (struct lto_info_fd): Add field unmaterialized_fndecls.
+ * lto.c (lto_info_fd_init): Initialize it.
+ (lto_info_fd_close): Free it.
+ (lto_materialize_function): New function.
+ (lto_read_subroutine_type_subprogram_DIE): Save the result decl on
+ unmaterialized_fndecls.
+ (lto_file_read): Read in all the function bodies after we have read
+ all of the DWARF info.
+ * lto-read.c (lto_read_body): Call init_ssa_operands if we are
+ reading a function body.
+
+2007-10-20 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (input_tree_flags): Renamed from input_flags to be
+ semetric with output_tree_flags. Added call to log flags.
+ (process_tree_flags): Renamed from process_flags. Fixed a lot of
+ type issues to make everything consistent with flags being
+ unsigned HOST_WIDE_INTS.
+ (input_expr_operand): Added call to
+ recompute_tree_invariant_for_addr_expr.
+ (input_local_var): Added debugging for tree_chains. Now calls
+ input_tree_flags.
+ (input_phi): Made flags unsigned HOST_WIDE_INT.
+ (input_ssa_names): Now calls input_tree_flags.
+ (lto_read_body): Now sets cfun.
+ (lto_read_function_body): Now sets current_function_pointer.
+
+2007-10-19 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_variable_formal_parameter_constant_DIE): Check
+ definitively whether SPECIFICATION or ABSTRACT_ORIGIN exist before
+ inspecting fields within.
+ (lto_read_DIE_at_ptr): Delete check for null result; let callers
+ handle this appropriately.
+
+2007-10-19 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_variable_formal_parameter_constant_DIE): Handle
+ DW_AT_abstract_origin properly. Ensure that we're not dealing with
+ both DW_AT_abstract_origin and DW_AT_specification.
+ (lto_read_subroutine_type_subprogram_DIE): Handle
+ DW_AT_abstract_origin.
+ (lto_read_DIE): Use lto_read_only_for_child_DIEs for labels.
+ (lto_read_DIE_at_ptr): Define as static to match declaration.
+ Lookup the PTR in the cache before reading it from the file.
+ (lto_resolve_var_ref): Adjust accordingly.
+ (lto_resolve_fn_ref): Adjust accordingly. Tweak comment.
+ (lto_resolve_field_ref): Adjust accordingly. Tweak comment.
+
+2007-10-19 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_DIE_at_ptr): New function.
+ (lto_resolve_var_ref): Use it.
+ (lto_resolve_fn_ref): Use it.
+ (lto_resolve_field_ref): Use it.
+ (lto_read_variable_formal_parameter_constant_DIE): Follow
+ DW_AT_specification and return the associated decl when appropriate.
+
+2007-10-18 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-lang.c (lto_type_for_mode): Move after lto_type_for_size.
+ Implement for scalar integer modes.
+ (lto_init): Initialize size_type_node.
+
+2007-10-18 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (input_expr_operand): Remove ssa name asserts.
+ (input_local_var): Add chaining for params.
+ (input_ssa_names): Add cfun parameter.
+ (input_function): Remove unnecessary else.
+
+2007-10-17 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_only_for_child_DIEs): Mark die parameter as unused.
+ (lto_resolve_var_ref): Use proper types.
+ (lto_resolve_fn_ref): Likewise.
+ (lto_resolve_field_ref): Likewise.
+
+2007-10-17 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-read.c (input_expr_operand): Remove case.
+
+2007-10-17 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_only_for_child_DIEs): New function.
+ (lto_read_DIE): Use it for lexical_block and inlined_subroutine DIEs.
+ * lto-elf.c (lto_elf_map_lto_section): Remove.
+ (lto_elf_file_vtable): Use lto_elf_map_optional_lto_section instead.
+ * lto-read.c (input_expr_operand): Assert that we never read a NULL
+ SSA_NAME. Add missing case for mechanical codes.
+ (input_cfg): Use basic_block_info_for_function instead of
+ basic_block_info.
+
+2007-10-16 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (input_sleb128, input_integer): Use proper casts.
+ (input_list): Renamed input_tree_list and modified to follow same
+ protocol as lto-function-out.c:output_tree_list.
+ (input_expr_operand): Make asm operands use input_tree_list.
+ (input_local_var): Now uses input_tree_list.
+ (lto_read_body): Change placement for setting context of debug_labels.
+
+
+2007-10-16 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (input_real): Output debugging in proper order.
+ (input_integer): Compute bit lengths properly.
+ (input_list): Clean up declaration.
+ (input_expr_operand): Change calls to input_real to match fix.
+ Make reading of LTO_bit_field_ref1 match output.
+ (input_local_var): Make reading of attributes match what is being
+ written.
+ (dump_debug_stream): Also print char in hex.
+ (debug_out_fun): Fix signed unsigned mismatch.
+
+2007-10-10 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c (lto_read_form): Handle DW_AT_MIPS_linkage_name and
+ DW_AT_GNU_vector specially, as they are not contiguous with the
+ specified set of attribute names. Use class_mask to check for
+ errors at the end of the function
+ (lto_resolve_var_ref): Read the DIE if it is not cached.
+ (lto_resolve_fn_ref): Likewise.
+ (lto_resolve_field_ref): Likewise.
+
+2007-10-05 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto.c: Include dwarf2out.h.
+ (lto_cache_store_DIE): Assert that we never change the value.
+ (LTO_BEGIN_READ_ATTRS): Print an informative error message.
+ (lto_read_compile_unit_DIE): Handle DW_AT_entry_pc.
+ (lto_read_array_type_DIE): Don't error on ndims == 0; build a
+ sensible type instead.
+ (lto_read_structure_union_class_type_DIE): Store the newly
+ created type prior to reading the members of the structure to
+ avoid infinite recursion. Avoid computing types and alignments
+ for structures whose sizes are unknown.
+ (lto_read_variable_formal_parameter_const): Handle DW_AT_artificial
+ and set DECL_ARTIFICIAL accordingly. Ignore DW_AT_abstract_origin,
+ DW_AT_const_value, and DW_AT_specification.
+ (lto_read_subroutine_type_subprogram_DIE): Handle DW_AT_declaration.
+ Return early if we have already constructed the function type.
+ (lto_read_typedef_DIE): Check to see if the type has been cached
+ already. Cache the type before reading any children.
+ (lto_read_const_volatile_restrict_type_DIE): Handle DW_AT_name.
+ (lto_read_DIE): Unset context->skip_non_parameters around reading
+ the DIE.
+ (lto_resolve_fn_ref): Delete trailing whitespace.
+
+2007-09-11 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (input_expr_operand): Added type for STRING_CST.
+
+2007-09-10 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-read.c (lto_read): Set the type of the newly created CALL_EXPR.
+
+2007-09-07 Nathan Froyd <froydnj@codesourcery.com>
+
+ * lto-lang.c (signed_and_unsigned_types): New variable.
+ (lto_type_for_size): Consult signed_and_unsigned_types to find
+ an approprite type, creating it if necessary.
+ (lto_set_decl_assembler_name): Add actual method body.
+
+2007-09-06 Jim Blandy <jimb@codesourcery.com>
+
+ * lto.c (lto_read_variable_formal_parameter_constant_DIE): If we
+ can't find a var init for this variable, leave its DECL_INITIAL.
+ * lto-elf.c (lto_elf_map_optional_lto_section): Renamed from
+ lto_elf_map_fn_body.
+ (lto_map_lto_section): New function.
+ (lto_elf_file_vtable): Use lto_elf_map_lto_section for function
+ bodies, and lto_elf_map_optional_lto_section for variable
+ initializers.
+ (lto_elf_find_section_data): Quietly return NULL if the section is
+ missing.
+ (lto_elf_file_open): Check for a NULL from lto_elf_find_section_data.
+
+ * lto-elf.c (lto_elf_find_section_data): Remove dead code.
+
+ * lto-read.c (lto_read_body): Doc fix.
+
+2007-08-29 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (fun_in): Renamed to data_in.
+ (input_expr_operand, input_local_var, input_string_internal,
+ input_string, input_real, input_list, get_label_decl,
+ get_type_ref, input_expr_operand, input_globals, input_labels,
+ input_local_vars_index, input_local_var, input_local_vars,
+ input_cfg, input_phi, input_ssa_names, input_bb, ): Renamed fun_in to data_in.
+ (input_constructor): New function.
+ (lto_read_function_body): Renamed to lto_read_body and generalized
+ to handle both functions and constructors.
+ (lto_read_function_body, lto_read_var_init): New function.
+
+
+2007-08-28 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (input_expr_operand): Assert that there really is a
+ FUNCTION_DECL.
+ (input_globals): Removed checks on 0 section.
+
+2007-08-28 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (fun_in): Added local_decls_index and
+ local_decls_index_d.
+ (input_expr_operand): Changed inputting of PARM_DECLs and VAR_DECLs.
+ (input_globals): Enabled code to handle FIELD_DECLs.
+ (input_local_vars_index, input_local_vars): New function.
+ (input_local_var): Changed to allow locals to be input randomly.
+ (lto_read_function_body): Added code to input the
+ local_decls_index and to free various structures.
+
+2007-08-17 Jim Blandy <jimb@codesourcery.com>
+
+ * lto.c (lto_read_variable_formal_parameter_constant_DIE): Remove
+ ATTRIBUTE_UNUSED from 'die' formal.
+
+ Use enum LTO_tags where appropriate, instead of 'unsigned int'.
+ * lto-read.c (input_record_start): Fix return type, type of 'tag'.
+ (input_list): Fix type of 'tag'.
+ (input_expr_operand): Fix type of 'tag' argument. Update
+ declaration. Fix type of 'ctag'. Add default case to switch,
+ since the type of the switched value is now an enum.
+ (input_local_vars): Fix type of 'tag'.
+ (input_bb): Fix type of 'tag' argument.
+ (input_function): Fix type of 'tag' argument.
+
+2007-08-16 Jim Blandy <jimb@codesourcery.com>
+
+ * lto.c (lto_read_member_DIE): Record the tree we create in
+ fd->die_cache. (Our 'die' argument is no longer unused.)
+ (lto_resolve_field_ref): New function.
+ * lto.h (lto_resolve_field_ref): New declaration.
+
+2007-08-15 Jim Blandy <jimb@codesourcery.com>
+
+ * lto-read.c (lto_read_var_init): Mark arguments as unused.
+
+2007-08-07 Jim Blandy <jimb@codesourcery.com>
+
+ * lto.c (lto_read_form): Complete attr_classes table.
+ (DWARF2_form_data): Doc fix.
+
+2007-08-05 Mark Mitchell <mark@codesourcery.com>
+
+ * lto.h (lto_file_vtable): Remove read_var_init. Add map_var_init
+ and unmap_var_init.
+ (lto_read_var_init): Declare.
+ * lto.c (lto_read_variable_formal_parameter_constant_DIE): Use new
+ interface for reading variable initializers.
+ * lto-elf.c (lto_elf_read_var_init): Remove.
+ (lto_elf_file_vtable): Update initializer.
+ (lto_elf_read_var_init): Add comment about unused-ness.
+ * lto-read.c (lto_read_var_init): New.
+
+ * lto.c (lto_read_form): Add entry for DW_AT_inline.
+
+2007-08-02 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (lto_read_function_body): Moved declaration of fn
+ outside of ifdef.
+
+2007-08-01 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (input_uleb128, input_string_internal, input_real,
+ input_integer, input_record_start, input_list, get_type_ref,
+ input_flags, input_expr_operand, input_expr_operand,
+ input_expr_operand, input_local_vars, input_cfg, input_phi,
+ input_ssa_names, input_bb, input_function): Added semicolons.
+
+
+2007-07-31 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (input_globals): Remove debugging.
+ (input_function): Set DECL_ARGUMENTS.
+
+
+2007-07-31 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (input_expr_operand): Fixed code for COND_EXEC,
+ RETURN_EXPR, MODIFY_EXPR and processing of flags.
+ (input_phi): Made work with operands other than SSA_NAMES and
+ fixed processing of flags.
+ (input_ssa_names): Initialize SSA_NAME_DEF_STMT to empty stmt.
+ (input_flags): New function.
+ * lto-lang.c (lto_init): Changed state of in_lto_p.
+
+
+2007-07-24 Mark Mitchell <mark@codesourcery.com>
+
+ * lto-tree.h (lto_varargs_cookie): Remove.
+ * lto.c (lto_context): Add last_parm_type, varargs_p, skip_all,
+ skip_non_parameters, skip_parameters.
+ (lto_varargs_cookie): Remove.
+ (lto_read_variable_formal_parameter_constant_DIE): Keep track of
+ parameter types.
+ (lto_read_abbrev): New function.
+ (lto_read_subroutine_type_subprogram_DIE): Make two passes over
+ child DIEs.
+ (lto_read_unspecified_parameters_DIE): Set context->varargs_p.
+ (lto_read_DIE): Use lto_read_abbrev. Honor skip_* flags.
+ (lto_file_read): Initialize new context fields.
+ * lto-lang.c (lto_type_for_mode): Return NULL_TREE.
+ (lto_unsigned_type): Remove.
+ (lto_signed_type): Likewise.
+ (lto_signed_or_unsigned_type): Likewise.
+ (lto_init): Do not create lto_varargs_cookie.
+ (LANG_HOOKS_UNSIGNED_TYPE): Do not define.
+ (LANG_HOOKS_SIGNED_TYPE): Likewise.
+ (LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE): Likewise.
+
+2007-07-19 Jan Hubicka <jh@suse.cz>
+
+ * lto-read.c (lto_read_function_body): Produce empty scope block
+ to avoid crash.
+
+2007-07-18 Mark Mitchell <mark@codesourcery.com>
+
+ * lto.c (lto_read_variable_formal_parameter_constant_DIE): Do not
+ process local variables.
+ (lto_read_subroutine_type_subprogram_DIE): Read child DIEs.
+
+2007-07-13 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read.c (input_list, input_expr_operand): Added struct
+ function parameter.
+ (init_cfg, finalize_cfg): Removed function.
+ (input_expr_operand): Added SSA_NAME and GIMPLE_MODIFY_STMT cases.
+ (input_labels, input_local_vars): Now takes input_block parameter rather than
+ synthsyzing it.
+ (input_cfg, input_phi, input_ssa_names): New functions.
+ (input_bb): Now passes in input_blocks. Does not construct cfg
+ and processes the list of phi functions.
+ (input_function): Now builds both the cfg and ssa_names table.
+ (lto_read_function_body): Processes new header fields to construct
+ streams for the ssa_names and cfg and their debugging.
+ * lto/lto-lang.c (lto_init): Set in_lto_p.
+
+
+2007-06-28 Mark Mitchell <mark@codesourcery.com>
+
+ * lto.h (lto_file_vtable): Add read_var_init.
+ * lto.c (lto_read_variable_formal_parameter_constant_DIE): Read
+ initializers.
+ (lto_main): Remove bogus asserts.
+ * lto-elf.c (tm.h): Include it.
+ (libiberty.y): Likewise.
+ (lto_elf_file): Add strtab and symtab. Rename
+ string_table_section_index to sec_strtab.
+ (lto_elf_file_vtable): Add lto_elf_read_var_init.
+ (lto_elf_get_shdr): New function.
+ (lto_elf_free_shdr): Likewise.
+ (lto_elf_find_section_data): Use them.
+ (lto_elf_read_symtab): New function.
+ (lto_elf_lookup_sym): Likewise.
+ (lto_elf_free_sym): Likewise.
+ (lto_elf_file_open): Tidy. Call lto_elf_read_symtab.
+ (lto_elf_built_init): New function.
+ (lto_elf_read_var_init): Likewise.
+ * Make-lang.in (lto/lto-elf.o): Depend on $(TM_H).
+
+2007-06-26 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto-read (make_new_block): Initialize the stmt_list.
+ (lto_static_init_local): Add debugging for missing codes.
+
+2007-06-26 Mark Mitchell <mark@codesourcery.com>
+
+ * lto.c (lto_read_subroutine_type_subprogram_DIE): Handle
+ unprototyped functions.
+
+2007-06-23 Mark Mitchell <mark@codesourcery.com>
+
+ * lto.c (lto_read_variable_formal_parameter_constant_DIE):
+ Handle DW_AT_MIPS_linkage_name.
+ (lto_read_subroutine_type_subprogram): Likewise. Correct
+ compilation errors.
+ (lto_main): Remove incorrect assertions.
+ * lto-symbtab.c: Build function types out of TREE_LISTs.
+
+ * lto-elf.c (<libelf>): Check for HAVE_LIBELF_H.
+
+ * Make-lang.in (LTO_OBJS): Depend on attribs.o.
+
+2007-06-21 Kenneth Zadeck <zadeck@naturalbridge.com>
+
+ * lto/lto-tree.h (lang_decl, lang_type, language_function): Added
+ dummy since ggc does not like empty structs.
+ * lto/lto-elf.c (libelf.h): Changed to libelf/libelf.h.
+ * lto/lto-read.c (ADD_CLASS_FLAG, ADD_EXPR_FLAG): Changed
+ expr->common to expr->base.
+ (make_new_block): Moved stmt_list to proper place.
+
+
+2007-03-14 Robert Kennedy <jimbob@google.com>
+
+ Eliminate use of lang_hooks.set_decl_assembler_name from LTO
+ * lto.c (lto_read_subroutine_type_subprogram_DIE) Get DECL
+ assembler name from DWARF.
+ * lto-lang.c (lto_set_decl_assembler_name) New function.
+
+2006-09-10 Mark Mitchell <mark@codesourcery.com>
+
+ * lto.h (lto_file_vtable): New structure.
+ (lto_file): Add vtable pointer.
+ (lto_file_init): Add vtable paramter.
+ (lto_read_function_body): New function.
+ (lto_symtab_merge_fn): New function.
+ * lto.c (lto_file_init): Add vtable parameter.
+ (lto_read_form): Fill in entries for DW_AT_prototyped,
+ DW_AT_frame_base.
+ (lto_read_subroutine_type_subprogram_DIE): New function.
+ (lto_read_DIE): Fill in entries for DW_TAG_subroutine_type and
+ DW_TAG_subprogram.
+ * lto-elf.c (lto_elf_vile_vtable): New variable.
+ (lto_elf_file_open): Pass it to lto_file_init.
+ (lto_elf_map_fn_body): New function.
+ (lto_elf_unmap_fn_body): Likewise.
+ * lto-read.c: New file.
+ * lto-symtab.c (lto_symtab_merge_fn): New function.
+ * lto-lang.c (LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION): Define to
+ tree_rest_of_compilation.
+ * Make-lang.in (LTO_OBJS): Add lto-read.o
+ (lto-read.o): New target.
+
+2006-09-03 Mark Mitchell <mark@codesourcery.com>
+
+ * lto.c (<inttypes.h>): Don't include it.
+ (lto_context): Don't typedef it.
+ (lto_resolve_reference): New function.
+ (lto_read_form): Use it.
+ (lto_resolve_type_ref): New function.
+ (lto_resolve_var_ref): Likewise.
+ (lto_resolve_fn_ref): Likewise.
+ * lto.h (<inttypes.h>): Include it.
+ (lto_context): New type.
+ (lto_ref): New structure.
+ (lto_resolve_type_ref): Declare.
+ (lto_resolve_var_ref): Likewise.
+ (lto_resolve_fn_ref): Likewise.
+
+2006-08-18 Mark Mitchell <mark@codesourcery.com>
+
+ * lang-specs.h: New file.
+
+2006-08-14 Mark Mitchell <mark@codesourcery.com>
+
+ * lto.c (lto_info_fd_init): Allocate the DIE cache.
+ (lto_info_fd_close): Deallocate it.
+ (lto_die_cache_entry): New structure.
+ (lto_cache_hash): New function.
+ (lto_cache_eq): Likewise.
+ (lto_cache_store_DIE): Likewise.
+ (lto_cache_lookup_DIE): Likewise.
+ (lto_read_referenced_type_DIE): Use the cache.
+ (lto_read_pointer_type_DIE): Robustify.
+ (lto_read_DIE): Use the cache.
+ * lto.h (hashtab.h): Include.
+ (lto_info_fd): Add DIE cache.
+ * Make-lang.in (LTO_H): New variable.
+ (lto/lto-lang.o): Use LTO_H.
+ (lto/lto-elf.o): Likewise.
+ (lto/lto-symtab.o): Likewise.
+
+2006-07-09 Mark Mitchell <mark@codesourcery.com>
+
+ * lto.c (lto_abi_mismatch_error): New function.
+ (lto_abbrev_read): Initialize num_abbrevs.
+ (lto_read_form): Specify allowed form classes for
+ DW_AT_declaration. Adjust for change to lto_set_cu_context.
+ (lto_read_variable_formal_parameter_constant_DIE): Handle
+ DW_AT_declaration. Call lto_symtab_merge_var.
+ (lto_read_pointer_type_DIE): New function.
+ (lto_read_base_type_DIE): Use build_nonstandard_integer_type. Do
+ not creat TYPE_DECLs for types that already have them.
+ (lto_read_DIE): Add lto_read_pointer_type_DIE.
+ (lto_set_cu_context): Make cu_start point to the header, not the
+ first DIE.
+ (lto_file_read): Adjust for change to lto_set_cu_context.
+ * Make-lang.in (LTO_OBJS): Add lto-symtab.o.
+ (lto/lto-symtab.o): New rule.
+ * lto-tree.h (lang_identifier): Add decl field.
+ (LANG_IDENTIFIER_CAST): New macro.
+ (LTO_IDENTIFIER_DECL): Likewise.
+ (lto_symtab_merge_var): Declare.
+ * lto-symtab.c: New file.
+
+2006-07-02 Daniel Berlin <dberlin@dberlin.org>
+
+ * lto.c (lto_context): Add current_cu and info_fd members.
+ (DWARF2_CompUnit): New structure.
+ (lto_read_DIE): Take lto_info_fd *.
+ (lto_read_child_DIEs): Ditto.
+ (lto_file_corrupt_error): Constify argument.
+ (lto_set_cu_context): New function
+ (lto_info_fd_init): Ditto.
+ (lto_info_fd_close): Ditto.
+ (lto_file_init): Use lto_info_fd_init.
+ (lto_file_close): Use lto_info_fd_close.
+ (lto_read_initial_length): Pass in pointer to header size.
+ (lto_read_comp_unit_header): Correct cu_length to
+ real length from beginning of header. Take lto_info_fd * as
+ argument.
+ (find_cu_for_offset): New function.
+ (lto_read_form): Change first argument to lto_info_fd *.
+ Add FORM_CONTEXT argument.
+ Handle DW_FORM_ref_addr.
+ (lto_read_tag_DIE): Change first argument to lto_info_fd *.
+ (LTO_BEGIN_READ_ATTRS_UNCHECKED): Save old context.
+ Swap contexts if necessary for form.
+ (LTO_BEGIN_READ_ATTRS): Cast fd to right type for
+ lto_file_corrupt_error.
+ (LTO_END_READ_ATTRS): Swap contexts back if it had changed.
+ (lto_read_referenced_type_DIE): Change first argument to
+ lto_info_fd *. Access lto_fd fields through base pointer.
+ (lto_read_compile_unit_DIE): Change first argument to an
+ lto_info_fd *.
+ (lto_read_variable_formal_parameter_constant_DIE): Ditto.
+ (lto_read_base_type_DIE): Ditto.
+ (lto_read_child_DIEs): Ditto.
+ (lto_read_DIE): Ditto. Change type of function pointer.
+ (lto_info_read): New function.
+ (lto_set_cu_context): Ditto.
+ (lto_file_read): Use lto_info_read, walk resulting CU's
+ (lto_main): Update for lto_info_fd change.
+ * lto-elf.c (lto_elf_file_open): Cast lto_info_fd to lto_fd where
+ necessary.
+ * lto.h (DWARF2_CompUnit): New structure.
+ (lto_info_fd): Ditto.
+ (lto_file): Change debug_info to be an lto_info_fd.
+
+2006-06-25 Mark Mitchell <mark@codesourcery.com>
+
+ * lto.c (toplev.h): Include it.
+ (dwarf2.h): Likewise.
+ (tree.h): Likewise.
+ (tm.h): Likewise.
+ (cgraph.h): Likewise.
+ (ggc.h): Likewise.
+ (inttypes.h): Likewise.
+ (DWARF2_attr): New type.
+ (DWARF2_abbrev): Likewise.
+ (DWARF2_class): Likewise.
+ (DWARF2_form_data): Likewise.
+ (lto_context): Likewise.
+ (lto_fd_init): New function.
+ (lto_abbrev_fd_init): Likewise.
+ (lto_abbrev_fd_close): Likewise.
+ (lto_file_init): Use them.
+ (lto_file_close): New function.
+ (lto_file_corrupt_error): Likewise.
+ (LTO_CHECK_INT_VAL): New macro.
+ (lto_check_size_t_val): New function.
+ (lto_check_int_val): Likewise.
+ (LTO_READ_TYPE): New macro.
+ (lto_read_ubyte): New function.
+ (lto_read_uhalf): Likewise.
+ (lto_read_uword): Likewise.
+ (lto_read_uleb128): Likewise.
+ (lto_read_initial_length): Likewise.
+ (lto_abbrev_read_attrs): Likewise.
+ (lto_abbrev_read): Likewise.
+ (lto_abbrev_lookup): Likewise.
+ (lto_read_section_offset): Likewise.
+ (lto_read_comp_unit_header): Likewise.
+ (lto_read_form): Likewise.
+ (LTO_BEGIN_READ_ATTRS_UNCHECKED): New macro.
+ (LTO_BEGIN_READ_ATTRS): Likewise.
+ (LTO_END_READ_ATTRS): Likewise.
+ (lto_unsupported_attr_error): New function.
+ (lto_get_identifier): Likewise.
+ (lto_read_referenced_type_DIE): Likewise.
+ (lto_read_compile_unit_DIE): Likewise.
+ (lto_read_variable_formal_parameter_constant_DIE): Likewise.
+ (lto_read_base_type_DIE): Likewise.
+ (lto_read_DIE): Likewise.
+ (lto_read_child_DIEs): Likewise.
+ (lto_file_read): Read DIEs.
+ (lto_main): Ask middle end to emit entities.
+ * lto-tree.h (lang_identifier): Inherit from tree_identifier.
+ * lto-elf.c (lto_elf_file_open): Adjust for interface changes.
+ (lto_elf_file_close): Likewise.
+ * lto.h (lto_file): Declare.
+ (DWARF2_abbrev): Likewise.
+ (lto_fd): New type.
+ (lto_abbrev_fd): Likewise.
+ (lto_file): Use new types.
+ (lto_file_close): Declare.
+ * lto-lang.c (lto_init): Always use unit-at-a-time mode.
+
+2006-06-18 Mark Mitchell <mark@codesourcery.com>
+
+ * lto.h: New file.
+ * lto.c: New file.
+ * lto-elf.c: New file.
+ * lto-lang.c (flags.h): Include it.
+ (lto.h): Likewise.
+ (lto_init): New function.
+ (lto_write_globals): Remove.
+ (LANG_HOOKS_WRITE_GLOBALS): Define to lhd_do_nothing.
+ (LANG_HOOKS_INIT): Define.
+ (LANG_HOOKS_PARSE_FILE): Likewise.
+ * Make-lang.in (LTO_OBJS): Add lto.o and lto-elf.o.
+ (LTO_EXE): Link with libelf.
+ (lto/lto-lang.o): Update dependencies.
+ (lto/lto.o): New target.
+ (lto/lto-elf.o): Likewise.
+
+2006-06-12 Mark Mitchell <mark@codesourcery.com>
+
+ * config-lang.in: New file.
+ * Make-lang.in: Likewise.
+ * lto-tree.h: Likewise.
+ * lto-lang.c: Likewise.
+
diff --git a/gcc/lto/Make-lang.in b/gcc/lto/Make-lang.in
new file mode 100644
index 000000000..1c8618ded
--- /dev/null
+++ b/gcc/lto/Make-lang.in
@@ -0,0 +1,94 @@
+# Top level -*- makefile -*- fragment for LTO
+# Copyright (C) 2009, 2010
+# Free Software Foundation, Inc.
+
+#This file is part of GCC.
+
+#GCC is free software; you can redistribute it and/or modify
+#it under the terms of the GNU General Public License as published by
+#the Free Software Foundation; either version 3, or (at your option)
+#any later version.
+
+#GCC is distributed in the hope that it will be useful,
+#but WITHOUT ANY WARRANTY; without even the implied warranty of
+#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+#GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3. If not see
+# <http://www.gnu.org/licenses/>.
+
+# Variables
+
+# The name of the LTO compiler.
+LTO_EXE = lto1$(exeext)
+# The LTO-specific object files inclued in $(LTO_EXE).
+LTO_OBJS = lto/lto-lang.o lto/lto.o lto/lto-object.o attribs.o
+LTO_H = lto/lto.h $(HASHTAB_H)
+LINKER_PLUGIN_API_H = $(srcdir)/../include/plugin-api.h
+LTO_TREE_H = lto/lto-tree.h $(LINKER_PLUGIN_API_H)
+
+
+# Rules
+
+# These hooks are used by the main GCC Makefile. Consult that
+# Makefile for documentation.
+lto.all.cross: $(LTO_EXE)
+lto.start.encap: $(LTO_EXE)
+lto.rest.encap:
+lto.tags:
+lto.install-common:
+lto.install-man:
+lto.install-info:
+lto.dvi:
+lto.pdf:
+lto.install-pdf:
+lto.html:
+lto.install-html:
+lto.uninstall:
+lto.info:
+lto.man:
+lto.srcextra:
+lto.srcman:
+lto.srcinfo:
+lto.install-plugin:
+
+lto.mostlyclean:
+ rm -f $(LTO_OBJS) $(LTO_EXE)
+
+lto.clean:
+lto.distclean:
+lto.maintainer-clean:
+lto.stage1:
+lto.stage2:
+lto.stage3:
+lto.stage4:
+lto.stageprofile:
+lto.stagefeedback:
+
+# LTO rules.
+
+# Use strict warnings for this front end.
+lto-warn = $(STRICT_WARN)
+
+$(LTO_EXE): $(LTO_OBJS) $(BACKEND) $(LIBDEPS)
+ +$(LINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
+ $(LTO_OBJS) $(BACKEND) $(BACKENDLIBS) $(LIBS)
+
+# Dependencies
+lto/lto-lang.o: lto/lto-lang.c $(CONFIG_H) coretypes.h debug.h \
+ flags.h $(GGC_H) langhooks.h $(LANGHOOKS_DEF_H) $(SYSTEM_H) \
+ $(TARGET_H) $(LTO_H) $(GIMPLE_H) gtype-lto.h gt-lto-lto-lang.h \
+ $(EXPR_H) $(LTO_STREAMER_H)
+lto/lto.o: lto/lto.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(OPTS_H) \
+ toplev.h $(TREE_H) $(DIAGNOSTIC_CORE_H) $(TM_H) \
+ $(CGRAPH_H) $(GGC_H) tree-ssa-operands.h $(TREE_PASS_H) \
+ langhooks.h $(VEC_H) $(BITMAP_H) pointer-set.h $(IPA_PROP_H) \
+ $(COMMON_H) debug.h $(TIMEVAR_H) $(GIMPLE_H) $(LTO_H) $(LTO_TREE_H) \
+ $(LTO_TAGS_H) $(LTO_STREAMER_H) $(SPLAY_TREE_H) gt-lto-lto.h $(PARAMS_H)
+lto/lto-object.o: lto/lto-object.c $(CONFIG_H) $(SYSTEM_H) coretypes.h \
+ $(DIAGNOSTIC_CORE_H) $(LTO_H) $(TM_H) $(LTO_STREAMER_H) \
+ ../include/simple-object.h
+
+# LTO testing is done as part of C/C++/Fortran etc. testing.
+check-lto:
diff --git a/gcc/lto/common.c b/gcc/lto/common.c
new file mode 100644
index 000000000..b54ec491e
--- /dev/null
+++ b/gcc/lto/common.c
@@ -0,0 +1,46 @@
+/* Common code for the plugin and lto1.
+ Copyright (C) 2009 Free Software Foundation, Inc.
+ Contributed by Rafael Avila de Espindola (espindola@google.com).
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+02110-1301, USA. */
+
+#include "common.h"
+
+const char *lto_kind_str[5] __attribute__ ((visibility ("hidden"))) =
+{
+ "DEF", "WEAKDEF", "UNDEF",
+ "WEAKUNDEF", "COMMON"
+};
+
+const char *lto_visibility_str[4] __attribute__ ((visibility ("hidden"))) =
+{
+ "DEFAULT", "PROTECTED",
+ "INTERNAL", "HIDDEN"
+};
+
+const char *lto_resolution_str[9] __attribute__ ((visibility ("hidden"))) =
+{
+ "UNKNOWN",
+ "UNDEF",
+ "PREVAILING_DEF",
+ "PREVAILING_DEF_IRONLY",
+ "PREEMPTED_REG",
+ "PREEMPTED_IR",
+ "RESOLVED_IR",
+ "RESOLVED_EXEC",
+ "RESOLVED_DYN"
+};
+
diff --git a/gcc/lto/common.h b/gcc/lto/common.h
new file mode 100644
index 000000000..e82184795
--- /dev/null
+++ b/gcc/lto/common.h
@@ -0,0 +1,34 @@
+/* Common code for the plugin and lto1.
+ Copyright (C) 2008 Free Software Foundation, Inc.
+ Contributed by Rafael Avila de Espindola (espindola@google.com).
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+
+
+static const char *lto_resolution_str[9] =
+{
+ "UNKNOWN",
+ "UNDEF",
+ "PREVAILING_DEF",
+ "PREVAILING_DEF_IRONLY",
+ "PREEMPTED_REG",
+ "PREEMPTED_IR",
+ "RESOLVED_IR",
+ "RESOLVED_EXEC",
+ "RESOLVED_DYN"
+};
diff --git a/gcc/lto/config-lang.in b/gcc/lto/config-lang.in
new file mode 100644
index 000000000..90235b0f7
--- /dev/null
+++ b/gcc/lto/config-lang.in
@@ -0,0 +1,35 @@
+# Top level configure fragment for LTO
+# Copyright (C) 2009, 2010
+# Free Software Foundation, Inc.
+
+#This file is part of GCC.
+
+#GCC is free software; you can redistribute it and/or modify
+#it under the terms of the GNU General Public License as published by
+#the Free Software Foundation; either version 3, or (at your option)
+#any later version.
+
+#GCC is distributed in the hope that it will be useful,
+#but WITHOUT ANY WARRANTY; without even the implied warranty of
+#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+#GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3. If not see
+# <http://www.gnu.org/licenses/>.
+
+language="lto"
+compilers="lto1\$(exeext)"
+stagestuff="lto1\$(exeext)"
+
+gtfiles="\$(srcdir)/lto/lto-tree.h \$(srcdir)/lto/lto-lang.c \$(srcdir)/lto/lto.c"
+
+# LTO is a special front end. From a user's perspective it is not
+# really a language, but a middle end feature. However, the GIMPLE
+# reading module is implemented as a front end, so enabling LTO means
+# enabling this "language". To enable LTO functionality, use
+# --enable-lto when configuring the compiler.
+build_by_default=no
+
+# Add LTO to boot language if it is enabled.
+boot_language=$enable_lto
diff --git a/gcc/lto/lang-specs.h b/gcc/lto/lang-specs.h
new file mode 100644
index 000000000..cbcb19b79
--- /dev/null
+++ b/gcc/lto/lang-specs.h
@@ -0,0 +1,24 @@
+/* LTO driver specs.
+ Copyright 2009 Free Software Foundation, Inc.
+ Contributed by CodeSourcery, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+/* LTO contributions to the "compilers" array in gcc.c. */
+
+ {"@lto", "lto1 %(cc1_options) %i %{!fsyntax-only:%(invoke_as)}",
+ /*cpp_spec=*/NULL, /*combinable=*/1, /*needs_preprocessing=*/0},
diff --git a/gcc/lto/lang.opt b/gcc/lto/lang.opt
new file mode 100644
index 000000000..82857fa60
--- /dev/null
+++ b/gcc/lto/lang.opt
@@ -0,0 +1,43 @@
+; Options for the LTO front end.
+; Copyright (C) 2008, 2010 Free Software Foundation, Inc.
+;
+; This file is part of GCC.
+;
+; GCC is free software; you can redistribute it and/or modify it under
+; the terms of the GNU General Public License as published by the Free
+; Software Foundation; either version 3, or (at your option) any later
+; version.
+;
+; GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+; WARRANTY; without even the implied warranty of MERCHANTABILITY or
+; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+; for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with GCC; see the file COPYING3. If not see
+; <http://www.gnu.org/licenses/>.
+
+; See the GCC internals manual for a description of this file's format.
+
+; Please try to keep this file in ASCII collating order.
+
+Language
+LTO
+
+fltrans
+LTO Report Var(flag_ltrans) Optimization
+Run the link-time optimizer in local transformation (LTRANS) mode.
+
+fltrans-output-list=
+LTO Joined Var(ltrans_output_list)
+Specify a file to which a list of files output by LTRANS is written.
+
+fwpa
+LTO Driver Report Var(flag_wpa) Optimization
+Run the link-time optimizer in whole program analysis (WPA) mode.
+
+fresolution=
+LTO Joined
+The resolution file
+
+; This comment is to ensure we retain the blank line above.
diff --git a/gcc/lto/lto-lang.c b/gcc/lto/lto-lang.c
new file mode 100644
index 000000000..5f157d6de
--- /dev/null
+++ b/gcc/lto/lto-lang.c
@@ -0,0 +1,1269 @@
+/* Language-dependent hooks for LTO.
+ Copyright 2009, 2010 Free Software Foundation, Inc.
+ Contributed by CodeSourcery, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "flags.h"
+#include "tm.h"
+#include "tree.h"
+#include "target.h"
+#include "langhooks.h"
+#include "langhooks-def.h"
+#include "debug.h"
+#include "lto-tree.h"
+#include "lto.h"
+#include "tree-inline.h"
+#include "gimple.h"
+#include "diagnostic-core.h"
+#include "toplev.h"
+#include "lto-streamer.h"
+
+static tree handle_noreturn_attribute (tree *, tree, tree, int, bool *);
+static tree handle_leaf_attribute (tree *, tree, tree, int, bool *);
+static tree handle_const_attribute (tree *, tree, tree, int, bool *);
+static tree handle_malloc_attribute (tree *, tree, tree, int, bool *);
+static tree handle_pure_attribute (tree *, tree, tree, int, bool *);
+static tree handle_novops_attribute (tree *, tree, tree, int, bool *);
+static tree handle_nonnull_attribute (tree *, tree, tree, int, bool *);
+static tree handle_nothrow_attribute (tree *, tree, tree, int, bool *);
+static tree handle_sentinel_attribute (tree *, tree, tree, int, bool *);
+static tree handle_type_generic_attribute (tree *, tree, tree, int, bool *);
+static tree handle_format_attribute (tree *, tree, tree, int, bool *);
+static tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
+
+/* Table of machine-independent attributes supported in GIMPLE. */
+const struct attribute_spec lto_attribute_table[] =
+{
+ /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */
+ { "noreturn", 0, 0, true, false, false,
+ handle_noreturn_attribute },
+ { "leaf", 0, 0, true, false, false,
+ handle_leaf_attribute },
+ /* The same comments as for noreturn attributes apply to const ones. */
+ { "const", 0, 0, true, false, false,
+ handle_const_attribute },
+ { "malloc", 0, 0, true, false, false,
+ handle_malloc_attribute },
+ { "pure", 0, 0, true, false, false,
+ handle_pure_attribute },
+ { "no vops", 0, 0, true, false, false,
+ handle_novops_attribute },
+ { "nonnull", 0, -1, false, true, true,
+ handle_nonnull_attribute },
+ { "nothrow", 0, 0, true, false, false,
+ handle_nothrow_attribute },
+ { "sentinel", 0, 1, false, true, true,
+ handle_sentinel_attribute },
+ { "type generic", 0, 0, false, true, true,
+ handle_type_generic_attribute },
+ { NULL, 0, 0, false, false, false, NULL }
+};
+
+/* Give the specifications for the format attributes, used by C and all
+ descendants. */
+
+const struct attribute_spec lto_format_attribute_table[] =
+{
+ /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */
+ { "format", 3, 3, false, true, true,
+ handle_format_attribute },
+ { "format_arg", 1, 1, false, true, true,
+ handle_format_arg_attribute },
+ { NULL, 0, 0, false, false, false, NULL }
+};
+
+enum built_in_attribute
+{
+#define DEF_ATTR_NULL_TREE(ENUM) ENUM,
+#define DEF_ATTR_INT(ENUM, VALUE) ENUM,
+#define DEF_ATTR_IDENT(ENUM, STRING) ENUM,
+#define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) ENUM,
+#include "builtin-attrs.def"
+#undef DEF_ATTR_NULL_TREE
+#undef DEF_ATTR_INT
+#undef DEF_ATTR_IDENT
+#undef DEF_ATTR_TREE_LIST
+ ATTR_LAST
+};
+
+static GTY(()) tree built_in_attributes[(int) ATTR_LAST];
+
+/* Builtin types. */
+
+enum lto_builtin_type
+{
+#define DEF_PRIMITIVE_TYPE(NAME, VALUE) NAME,
+#define DEF_FUNCTION_TYPE_0(NAME, RETURN) NAME,
+#define DEF_FUNCTION_TYPE_1(NAME, RETURN, ARG1) NAME,
+#define DEF_FUNCTION_TYPE_2(NAME, RETURN, ARG1, ARG2) NAME,
+#define DEF_FUNCTION_TYPE_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
+#define DEF_FUNCTION_TYPE_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME,
+#define DEF_FUNCTION_TYPE_5(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) NAME,
+#define DEF_FUNCTION_TYPE_6(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6) NAME,
+#define DEF_FUNCTION_TYPE_7(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7) NAME,
+#define DEF_FUNCTION_TYPE_VAR_0(NAME, RETURN) NAME,
+#define DEF_FUNCTION_TYPE_VAR_1(NAME, RETURN, ARG1) NAME,
+#define DEF_FUNCTION_TYPE_VAR_2(NAME, RETURN, ARG1, ARG2) NAME,
+#define DEF_FUNCTION_TYPE_VAR_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
+#define DEF_FUNCTION_TYPE_VAR_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME,
+#define DEF_FUNCTION_TYPE_VAR_5(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG6) \
+ NAME,
+#define DEF_POINTER_TYPE(NAME, TYPE) NAME,
+#include "builtin-types.def"
+#undef DEF_PRIMITIVE_TYPE
+#undef DEF_FUNCTION_TYPE_0
+#undef DEF_FUNCTION_TYPE_1
+#undef DEF_FUNCTION_TYPE_2
+#undef DEF_FUNCTION_TYPE_3
+#undef DEF_FUNCTION_TYPE_4
+#undef DEF_FUNCTION_TYPE_5
+#undef DEF_FUNCTION_TYPE_6
+#undef DEF_FUNCTION_TYPE_7
+#undef DEF_FUNCTION_TYPE_VAR_0
+#undef DEF_FUNCTION_TYPE_VAR_1
+#undef DEF_FUNCTION_TYPE_VAR_2
+#undef DEF_FUNCTION_TYPE_VAR_3
+#undef DEF_FUNCTION_TYPE_VAR_4
+#undef DEF_FUNCTION_TYPE_VAR_5
+#undef DEF_POINTER_TYPE
+ BT_LAST
+};
+
+typedef enum lto_builtin_type builtin_type;
+
+static GTY(()) tree builtin_types[(int) BT_LAST + 1];
+
+static GTY(()) tree string_type_node;
+static GTY(()) tree const_string_type_node;
+static GTY(()) tree wint_type_node;
+static GTY(()) tree intmax_type_node;
+static GTY(()) tree uintmax_type_node;
+static GTY(()) tree signed_size_type_node;
+
+/* Flags needed to process builtins.def. */
+int flag_isoc94;
+int flag_isoc99;
+
+/* Attribute handlers. */
+
+/* Handle a "noreturn" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_noreturn_attribute (tree *node, tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool * ARG_UNUSED (no_add_attrs))
+{
+ tree type = TREE_TYPE (*node);
+
+ if (TREE_CODE (*node) == FUNCTION_DECL)
+ TREE_THIS_VOLATILE (*node) = 1;
+ else if (TREE_CODE (type) == POINTER_TYPE
+ && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE)
+ TREE_TYPE (*node)
+ = build_pointer_type
+ (build_type_variant (TREE_TYPE (type),
+ TYPE_READONLY (TREE_TYPE (type)), 1));
+ else
+ gcc_unreachable ();
+
+ return NULL_TREE;
+}
+
+/* Handle a "leaf" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_leaf_attribute (tree *node, tree name,
+ tree ARG_UNUSED (args),
+ int ARG_UNUSED (flags), bool *no_add_attrs)
+{
+ if (TREE_CODE (*node) != FUNCTION_DECL)
+ {
+ warning (OPT_Wattributes, "%qE attribute ignored", name);
+ *no_add_attrs = true;
+ }
+ if (!TREE_PUBLIC (*node))
+ {
+ warning (OPT_Wattributes, "%qE attribute has no effect on unit local functions", name);
+ *no_add_attrs = true;
+ }
+
+ return NULL_TREE;
+}
+
+/* Handle a "const" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_const_attribute (tree *node, tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool * ARG_UNUSED (no_add_attrs))
+{
+ tree type = TREE_TYPE (*node);
+
+ /* See FIXME comment on noreturn in c_common_attribute_table. */
+ if (TREE_CODE (*node) == FUNCTION_DECL)
+ TREE_READONLY (*node) = 1;
+ else if (TREE_CODE (type) == POINTER_TYPE
+ && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE)
+ TREE_TYPE (*node)
+ = build_pointer_type
+ (build_type_variant (TREE_TYPE (type), 1,
+ TREE_THIS_VOLATILE (TREE_TYPE (type))));
+ else
+ gcc_unreachable ();
+
+ return NULL_TREE;
+}
+
+
+/* Handle a "malloc" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_malloc_attribute (tree *node, tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool * ARG_UNUSED (no_add_attrs))
+{
+ if (TREE_CODE (*node) == FUNCTION_DECL
+ && POINTER_TYPE_P (TREE_TYPE (TREE_TYPE (*node))))
+ DECL_IS_MALLOC (*node) = 1;
+ else
+ gcc_unreachable ();
+
+ return NULL_TREE;
+}
+
+
+/* Handle a "pure" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_pure_attribute (tree *node, tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool * ARG_UNUSED (no_add_attrs))
+{
+ if (TREE_CODE (*node) == FUNCTION_DECL)
+ DECL_PURE_P (*node) = 1;
+ else
+ gcc_unreachable ();
+
+ return NULL_TREE;
+}
+
+
+/* Handle a "no vops" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_novops_attribute (tree *node, tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool *ARG_UNUSED (no_add_attrs))
+{
+ gcc_assert (TREE_CODE (*node) == FUNCTION_DECL);
+ DECL_IS_NOVOPS (*node) = 1;
+ return NULL_TREE;
+}
+
+
+/* Helper for nonnull attribute handling; fetch the operand number
+ from the attribute argument list. */
+
+static bool
+get_nonnull_operand (tree arg_num_expr, unsigned HOST_WIDE_INT *valp)
+{
+ /* Verify the arg number is a constant. */
+ if (TREE_CODE (arg_num_expr) != INTEGER_CST
+ || TREE_INT_CST_HIGH (arg_num_expr) != 0)
+ return false;
+
+ *valp = TREE_INT_CST_LOW (arg_num_expr);
+ return true;
+}
+
+/* Handle the "nonnull" attribute. */
+
+static tree
+handle_nonnull_attribute (tree *node, tree ARG_UNUSED (name),
+ tree args, int ARG_UNUSED (flags),
+ bool * ARG_UNUSED (no_add_attrs))
+{
+ tree type = *node;
+
+ /* If no arguments are specified, all pointer arguments should be
+ non-null. Verify a full prototype is given so that the arguments
+ will have the correct types when we actually check them later. */
+ if (!args)
+ {
+ gcc_assert (prototype_p (type));
+ return NULL_TREE;
+ }
+
+ /* Argument list specified. Verify that each argument number references
+ a pointer argument. */
+ for (; args; args = TREE_CHAIN (args))
+ {
+ tree argument;
+ unsigned HOST_WIDE_INT arg_num = 0, ck_num;
+
+ if (!get_nonnull_operand (TREE_VALUE (args), &arg_num))
+ gcc_unreachable ();
+
+ argument = TYPE_ARG_TYPES (type);
+ if (argument)
+ {
+ for (ck_num = 1; ; ck_num++)
+ {
+ if (!argument || ck_num == arg_num)
+ break;
+ argument = TREE_CHAIN (argument);
+ }
+
+ gcc_assert (argument
+ && TREE_CODE (TREE_VALUE (argument)) == POINTER_TYPE);
+ }
+ }
+
+ return NULL_TREE;
+}
+
+
+/* Handle a "nothrow" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_nothrow_attribute (tree *node, tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool * ARG_UNUSED (no_add_attrs))
+{
+ if (TREE_CODE (*node) == FUNCTION_DECL)
+ TREE_NOTHROW (*node) = 1;
+ else
+ gcc_unreachable ();
+
+ return NULL_TREE;
+}
+
+
+/* Handle a "sentinel" attribute. */
+
+static tree
+handle_sentinel_attribute (tree *node, tree ARG_UNUSED (name), tree args,
+ int ARG_UNUSED (flags),
+ bool * ARG_UNUSED (no_add_attrs))
+{
+ tree params = TYPE_ARG_TYPES (*node);
+ gcc_assert (params);
+
+ while (TREE_CHAIN (params))
+ params = TREE_CHAIN (params);
+
+ gcc_assert (!VOID_TYPE_P (TREE_VALUE (params)));
+
+ if (args)
+ {
+ tree position = TREE_VALUE (args);
+ gcc_assert (TREE_CODE (position) == INTEGER_CST);
+ if (tree_int_cst_lt (position, integer_zero_node))
+ gcc_unreachable ();
+ }
+
+ return NULL_TREE;
+}
+
+/* Handle a "type_generic" attribute. */
+
+static tree
+handle_type_generic_attribute (tree *node, tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool * ARG_UNUSED (no_add_attrs))
+{
+ tree params;
+
+ /* Ensure we have a function type. */
+ gcc_assert (TREE_CODE (*node) == FUNCTION_TYPE);
+
+ params = TYPE_ARG_TYPES (*node);
+ while (params && ! VOID_TYPE_P (TREE_VALUE (params)))
+ params = TREE_CHAIN (params);
+
+ /* Ensure we have a variadic function. */
+ gcc_assert (!params);
+
+ return NULL_TREE;
+}
+
+/* Handle a "format" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_format_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool *no_add_attrs)
+{
+ *no_add_attrs = true;
+ return NULL_TREE;
+}
+
+
+/* Handle a "format_arg" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+tree
+handle_format_arg_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool *no_add_attrs)
+{
+ *no_add_attrs = true;
+ return NULL_TREE;
+}
+
+
+/* Cribbed from c-common.c. */
+
+static void
+def_fn_type (builtin_type def, builtin_type ret, bool var, int n, ...)
+{
+ tree args = NULL, t;
+ va_list list;
+ int i;
+
+ va_start (list, n);
+ for (i = 0; i < n; ++i)
+ {
+ builtin_type a = (builtin_type) va_arg (list, int);
+ t = builtin_types[a];
+ if (t == error_mark_node)
+ goto egress;
+ args = tree_cons (NULL_TREE, t, args);
+ }
+ va_end (list);
+
+ args = nreverse (args);
+ if (!var)
+ args = chainon (args, void_list_node);
+
+ t = builtin_types[ret];
+ if (t == error_mark_node)
+ goto egress;
+ t = build_function_type (t, args);
+
+ egress:
+ builtin_types[def] = t;
+}
+
+/* Used to help initialize the builtin-types.def table. When a type of
+ the correct size doesn't exist, use error_mark_node instead of NULL.
+ The later results in segfaults even when a decl using the type doesn't
+ get invoked. */
+
+static tree
+builtin_type_for_size (int size, bool unsignedp)
+{
+ tree type = lang_hooks.types.type_for_size (size, unsignedp);
+ return type ? type : error_mark_node;
+}
+
+/* Support for DEF_BUILTIN. */
+
+static void
+def_builtin_1 (enum built_in_function fncode, const char *name,
+ enum built_in_class fnclass, tree fntype, tree libtype,
+ bool both_p, bool fallback_p, bool nonansi_p,
+ tree fnattrs, bool implicit_p)
+{
+ tree decl;
+ const char *libname;
+
+ if (fntype == error_mark_node)
+ return;
+
+ libname = name + strlen ("__builtin_");
+ decl = add_builtin_function (name, fntype, fncode, fnclass,
+ (fallback_p ? libname : NULL),
+ fnattrs);
+
+ if (both_p
+ && !flag_no_builtin
+ && !(nonansi_p && flag_no_nonansi_builtin))
+ add_builtin_function (libname, libtype, fncode, fnclass,
+ NULL, fnattrs);
+
+ built_in_decls[(int) fncode] = decl;
+ if (implicit_p)
+ implicit_built_in_decls[(int) fncode] = decl;
+}
+
+
+/* Initialize the attribute table for all the supported builtins. */
+
+static void
+lto_init_attributes (void)
+{
+ /* Fill in the built_in_attributes array. */
+#define DEF_ATTR_NULL_TREE(ENUM) \
+ built_in_attributes[(int) ENUM] = NULL_TREE;
+#define DEF_ATTR_INT(ENUM, VALUE) \
+ built_in_attributes[(int) ENUM] = build_int_cst (NULL_TREE, VALUE);
+#define DEF_ATTR_IDENT(ENUM, STRING) \
+ built_in_attributes[(int) ENUM] = get_identifier (STRING);
+#define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) \
+ built_in_attributes[(int) ENUM] \
+ = tree_cons (built_in_attributes[(int) PURPOSE], \
+ built_in_attributes[(int) VALUE], \
+ built_in_attributes[(int) CHAIN]);
+#include "builtin-attrs.def"
+#undef DEF_ATTR_NULL_TREE
+#undef DEF_ATTR_INT
+#undef DEF_ATTR_IDENT
+#undef DEF_ATTR_TREE_LIST
+}
+
+/* Create builtin types and functions. VA_LIST_REF_TYPE_NODE and
+ VA_LIST_ARG_TYPE_NODE are used in builtin-types.def. */
+
+static void
+lto_define_builtins (tree va_list_ref_type_node ATTRIBUTE_UNUSED,
+ tree va_list_arg_type_node ATTRIBUTE_UNUSED)
+{
+#define DEF_PRIMITIVE_TYPE(ENUM, VALUE) \
+ builtin_types[ENUM] = VALUE;
+#define DEF_FUNCTION_TYPE_0(ENUM, RETURN) \
+ def_fn_type (ENUM, RETURN, 0, 0);
+#define DEF_FUNCTION_TYPE_1(ENUM, RETURN, ARG1) \
+ def_fn_type (ENUM, RETURN, 0, 1, ARG1);
+#define DEF_FUNCTION_TYPE_2(ENUM, RETURN, ARG1, ARG2) \
+ def_fn_type (ENUM, RETURN, 0, 2, ARG1, ARG2);
+#define DEF_FUNCTION_TYPE_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
+ def_fn_type (ENUM, RETURN, 0, 3, ARG1, ARG2, ARG3);
+#define DEF_FUNCTION_TYPE_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
+ def_fn_type (ENUM, RETURN, 0, 4, ARG1, ARG2, ARG3, ARG4);
+#define DEF_FUNCTION_TYPE_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \
+ def_fn_type (ENUM, RETURN, 0, 5, ARG1, ARG2, ARG3, ARG4, ARG5);
+#define DEF_FUNCTION_TYPE_6(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
+ ARG6) \
+ def_fn_type (ENUM, RETURN, 0, 6, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6);
+#define DEF_FUNCTION_TYPE_7(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
+ ARG6, ARG7) \
+ def_fn_type (ENUM, RETURN, 0, 7, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7);
+#define DEF_FUNCTION_TYPE_VAR_0(ENUM, RETURN) \
+ def_fn_type (ENUM, RETURN, 1, 0);
+#define DEF_FUNCTION_TYPE_VAR_1(ENUM, RETURN, ARG1) \
+ def_fn_type (ENUM, RETURN, 1, 1, ARG1);
+#define DEF_FUNCTION_TYPE_VAR_2(ENUM, RETURN, ARG1, ARG2) \
+ def_fn_type (ENUM, RETURN, 1, 2, ARG1, ARG2);
+#define DEF_FUNCTION_TYPE_VAR_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
+ def_fn_type (ENUM, RETURN, 1, 3, ARG1, ARG2, ARG3);
+#define DEF_FUNCTION_TYPE_VAR_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
+ def_fn_type (ENUM, RETURN, 1, 4, ARG1, ARG2, ARG3, ARG4);
+#define DEF_FUNCTION_TYPE_VAR_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \
+ def_fn_type (ENUM, RETURN, 1, 5, ARG1, ARG2, ARG3, ARG4, ARG5);
+#define DEF_POINTER_TYPE(ENUM, TYPE) \
+ builtin_types[(int) ENUM] = build_pointer_type (builtin_types[(int) TYPE]);
+
+#include "builtin-types.def"
+
+#undef DEF_PRIMITIVE_TYPE
+#undef DEF_FUNCTION_TYPE_1
+#undef DEF_FUNCTION_TYPE_2
+#undef DEF_FUNCTION_TYPE_3
+#undef DEF_FUNCTION_TYPE_4
+#undef DEF_FUNCTION_TYPE_5
+#undef DEF_FUNCTION_TYPE_6
+#undef DEF_FUNCTION_TYPE_VAR_0
+#undef DEF_FUNCTION_TYPE_VAR_1
+#undef DEF_FUNCTION_TYPE_VAR_2
+#undef DEF_FUNCTION_TYPE_VAR_3
+#undef DEF_FUNCTION_TYPE_VAR_4
+#undef DEF_FUNCTION_TYPE_VAR_5
+#undef DEF_POINTER_TYPE
+ builtin_types[(int) BT_LAST] = NULL_TREE;
+
+ lto_init_attributes ();
+
+#define DEF_BUILTIN(ENUM, NAME, CLASS, TYPE, LIBTYPE, BOTH_P, FALLBACK_P,\
+ NONANSI_P, ATTRS, IMPLICIT, COND) \
+ if (NAME && COND) \
+ def_builtin_1 (ENUM, NAME, CLASS, builtin_types[(int) TYPE], \
+ builtin_types[(int) LIBTYPE], BOTH_P, FALLBACK_P, \
+ NONANSI_P, built_in_attributes[(int) ATTRS], IMPLICIT);
+#include "builtins.def"
+#undef DEF_BUILTIN
+}
+
+static GTY(()) tree registered_builtin_types;
+
+/* A chain of builtin functions that we need to recognize. We will
+ assume that all other function names we see will be defined by the
+ user's program. */
+static GTY(()) tree registered_builtin_fndecls;
+
+/* Language hooks. */
+
+static unsigned int
+lto_option_lang_mask (void)
+{
+ return CL_LTO;
+}
+
+static bool
+lto_complain_wrong_lang_p (const struct cl_option *option ATTRIBUTE_UNUSED)
+{
+ /* The LTO front end inherits all the options from the first front
+ end that was used. However, not all the original front end
+ options make sense in LTO.
+
+ A real solution would be to filter this in collect2, but collect2
+ does not have access to all the option attributes to know what to
+ filter. So, in lto1 we silently accept inherited flags and do
+ nothing about it. */
+ return false;
+}
+
+static void
+lto_init_options_struct (struct gcc_options *opts)
+{
+ /* By default, C99-like requirements for complex multiply and divide.
+ ??? Until the complex method is encoded in the IL this is the only
+ safe choice. This will pessimize Fortran code with LTO unless
+ people specify a complex method manually or use -ffast-math. */
+ opts->x_flag_complex_method = 2;
+}
+
+/* Handle command-line option SCODE. If the option takes an argument, it is
+ stored in ARG, which is otherwise NULL. VALUE holds either a numerical
+ argument or a binary value indicating whether the positive or negative form
+ of the option was supplied. */
+
+const char *resolution_file_name;
+static bool
+lto_handle_option (size_t scode, const char *arg,
+ int value ATTRIBUTE_UNUSED, int kind ATTRIBUTE_UNUSED,
+ location_t loc ATTRIBUTE_UNUSED,
+ const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED)
+{
+ enum opt_code code = (enum opt_code) scode;
+ bool result = true;
+
+ switch (code)
+ {
+ case OPT_fresolution_:
+ resolution_file_name = arg;
+ break;
+
+ case OPT_Wabi:
+ warn_psabi = value;
+ break;
+
+ default:
+ break;
+ }
+
+ return result;
+}
+
+/* Perform post-option processing. Does additional initialization based on
+ command-line options. PFILENAME is the main input filename. Returns false
+ to enable subsequent back-end initialization. */
+
+static bool
+lto_post_options (const char **pfilename ATTRIBUTE_UNUSED)
+{
+ /* -fltrans and -fwpa are mutually exclusive. Check for that here. */
+ if (flag_wpa && flag_ltrans)
+ error ("-fwpa and -fltrans are mutually exclusive");
+
+ if (flag_ltrans)
+ {
+ flag_generate_lto = 0;
+
+ /* During LTRANS, we are not looking at the whole program, only
+ a subset of the whole callgraph. */
+ flag_whole_program = 0;
+ }
+
+ if (flag_wpa)
+ flag_generate_lto = 1;
+
+ /* Excess precision other than "fast" requires front-end
+ support. */
+ flag_excess_precision_cmdline = EXCESS_PRECISION_FAST;
+
+ lto_read_all_file_options ();
+
+ /* Initialize the compiler back end. */
+ return false;
+}
+
+/* Return an integer type with PRECISION bits of precision,
+ that is unsigned if UNSIGNEDP is nonzero, otherwise signed. */
+
+static tree
+lto_type_for_size (unsigned precision, int unsignedp)
+{
+ if (precision == TYPE_PRECISION (integer_type_node))
+ return unsignedp ? unsigned_type_node : integer_type_node;
+
+ if (precision == TYPE_PRECISION (signed_char_type_node))
+ return unsignedp ? unsigned_char_type_node : signed_char_type_node;
+
+ if (precision == TYPE_PRECISION (short_integer_type_node))
+ return unsignedp ? short_unsigned_type_node : short_integer_type_node;
+
+ if (precision == TYPE_PRECISION (long_integer_type_node))
+ return unsignedp ? long_unsigned_type_node : long_integer_type_node;
+
+ if (precision == TYPE_PRECISION (long_long_integer_type_node))
+ return unsignedp
+ ? long_long_unsigned_type_node
+ : long_long_integer_type_node;
+
+ if (precision <= TYPE_PRECISION (intQI_type_node))
+ return unsignedp ? unsigned_intQI_type_node : intQI_type_node;
+
+ if (precision <= TYPE_PRECISION (intHI_type_node))
+ return unsignedp ? unsigned_intHI_type_node : intHI_type_node;
+
+ if (precision <= TYPE_PRECISION (intSI_type_node))
+ return unsignedp ? unsigned_intSI_type_node : intSI_type_node;
+
+ if (precision <= TYPE_PRECISION (intDI_type_node))
+ return unsignedp ? unsigned_intDI_type_node : intDI_type_node;
+
+ if (precision <= TYPE_PRECISION (intTI_type_node))
+ return unsignedp ? unsigned_intTI_type_node : intTI_type_node;
+
+ return NULL_TREE;
+}
+
+
+/* Return a data type that has machine mode MODE.
+ If the mode is an integer,
+ then UNSIGNEDP selects between signed and unsigned types.
+ If the mode is a fixed-point mode,
+ then UNSIGNEDP selects between saturating and nonsaturating types. */
+
+static tree
+lto_type_for_mode (enum machine_mode mode, int unsigned_p)
+{
+ tree t;
+
+ if (mode == TYPE_MODE (integer_type_node))
+ return unsigned_p ? unsigned_type_node : integer_type_node;
+
+ if (mode == TYPE_MODE (signed_char_type_node))
+ return unsigned_p ? unsigned_char_type_node : signed_char_type_node;
+
+ if (mode == TYPE_MODE (short_integer_type_node))
+ return unsigned_p ? short_unsigned_type_node : short_integer_type_node;
+
+ if (mode == TYPE_MODE (long_integer_type_node))
+ return unsigned_p ? long_unsigned_type_node : long_integer_type_node;
+
+ if (mode == TYPE_MODE (long_long_integer_type_node))
+ return unsigned_p ? long_long_unsigned_type_node : long_long_integer_type_node;
+
+ if (mode == QImode)
+ return unsigned_p ? unsigned_intQI_type_node : intQI_type_node;
+
+ if (mode == HImode)
+ return unsigned_p ? unsigned_intHI_type_node : intHI_type_node;
+
+ if (mode == SImode)
+ return unsigned_p ? unsigned_intSI_type_node : intSI_type_node;
+
+ if (mode == DImode)
+ return unsigned_p ? unsigned_intDI_type_node : intDI_type_node;
+
+#if HOST_BITS_PER_WIDE_INT >= 64
+ if (mode == TYPE_MODE (intTI_type_node))
+ return unsigned_p ? unsigned_intTI_type_node : intTI_type_node;
+#endif
+
+ if (mode == TYPE_MODE (float_type_node))
+ return float_type_node;
+
+ if (mode == TYPE_MODE (double_type_node))
+ return double_type_node;
+
+ if (mode == TYPE_MODE (long_double_type_node))
+ return long_double_type_node;
+
+ if (mode == TYPE_MODE (void_type_node))
+ return void_type_node;
+
+ if (mode == TYPE_MODE (build_pointer_type (char_type_node)))
+ return (unsigned_p
+ ? make_unsigned_type (GET_MODE_PRECISION (mode))
+ : make_signed_type (GET_MODE_PRECISION (mode)));
+
+ if (mode == TYPE_MODE (build_pointer_type (integer_type_node)))
+ return (unsigned_p
+ ? make_unsigned_type (GET_MODE_PRECISION (mode))
+ : make_signed_type (GET_MODE_PRECISION (mode)));
+
+ if (COMPLEX_MODE_P (mode))
+ {
+ enum machine_mode inner_mode;
+ tree inner_type;
+
+ if (mode == TYPE_MODE (complex_float_type_node))
+ return complex_float_type_node;
+ if (mode == TYPE_MODE (complex_double_type_node))
+ return complex_double_type_node;
+ if (mode == TYPE_MODE (complex_long_double_type_node))
+ return complex_long_double_type_node;
+
+ if (mode == TYPE_MODE (complex_integer_type_node) && !unsigned_p)
+ return complex_integer_type_node;
+
+ inner_mode = GET_MODE_INNER (mode);
+ inner_type = lto_type_for_mode (inner_mode, unsigned_p);
+ if (inner_type != NULL_TREE)
+ return build_complex_type (inner_type);
+ }
+ else if (VECTOR_MODE_P (mode))
+ {
+ enum machine_mode inner_mode = GET_MODE_INNER (mode);
+ tree inner_type = lto_type_for_mode (inner_mode, unsigned_p);
+ if (inner_type != NULL_TREE)
+ return build_vector_type_for_mode (inner_type, mode);
+ }
+
+ if (mode == TYPE_MODE (dfloat32_type_node))
+ return dfloat32_type_node;
+ if (mode == TYPE_MODE (dfloat64_type_node))
+ return dfloat64_type_node;
+ if (mode == TYPE_MODE (dfloat128_type_node))
+ return dfloat128_type_node;
+
+ if (ALL_SCALAR_FIXED_POINT_MODE_P (mode))
+ {
+ if (mode == TYPE_MODE (short_fract_type_node))
+ return unsigned_p ? sat_short_fract_type_node : short_fract_type_node;
+ if (mode == TYPE_MODE (fract_type_node))
+ return unsigned_p ? sat_fract_type_node : fract_type_node;
+ if (mode == TYPE_MODE (long_fract_type_node))
+ return unsigned_p ? sat_long_fract_type_node : long_fract_type_node;
+ if (mode == TYPE_MODE (long_long_fract_type_node))
+ return unsigned_p ? sat_long_long_fract_type_node
+ : long_long_fract_type_node;
+
+ if (mode == TYPE_MODE (unsigned_short_fract_type_node))
+ return unsigned_p ? sat_unsigned_short_fract_type_node
+ : unsigned_short_fract_type_node;
+ if (mode == TYPE_MODE (unsigned_fract_type_node))
+ return unsigned_p ? sat_unsigned_fract_type_node
+ : unsigned_fract_type_node;
+ if (mode == TYPE_MODE (unsigned_long_fract_type_node))
+ return unsigned_p ? sat_unsigned_long_fract_type_node
+ : unsigned_long_fract_type_node;
+ if (mode == TYPE_MODE (unsigned_long_long_fract_type_node))
+ return unsigned_p ? sat_unsigned_long_long_fract_type_node
+ : unsigned_long_long_fract_type_node;
+
+ if (mode == TYPE_MODE (short_accum_type_node))
+ return unsigned_p ? sat_short_accum_type_node : short_accum_type_node;
+ if (mode == TYPE_MODE (accum_type_node))
+ return unsigned_p ? sat_accum_type_node : accum_type_node;
+ if (mode == TYPE_MODE (long_accum_type_node))
+ return unsigned_p ? sat_long_accum_type_node : long_accum_type_node;
+ if (mode == TYPE_MODE (long_long_accum_type_node))
+ return unsigned_p ? sat_long_long_accum_type_node
+ : long_long_accum_type_node;
+
+ if (mode == TYPE_MODE (unsigned_short_accum_type_node))
+ return unsigned_p ? sat_unsigned_short_accum_type_node
+ : unsigned_short_accum_type_node;
+ if (mode == TYPE_MODE (unsigned_accum_type_node))
+ return unsigned_p ? sat_unsigned_accum_type_node
+ : unsigned_accum_type_node;
+ if (mode == TYPE_MODE (unsigned_long_accum_type_node))
+ return unsigned_p ? sat_unsigned_long_accum_type_node
+ : unsigned_long_accum_type_node;
+ if (mode == TYPE_MODE (unsigned_long_long_accum_type_node))
+ return unsigned_p ? sat_unsigned_long_long_accum_type_node
+ : unsigned_long_long_accum_type_node;
+
+ if (mode == QQmode)
+ return unsigned_p ? sat_qq_type_node : qq_type_node;
+ if (mode == HQmode)
+ return unsigned_p ? sat_hq_type_node : hq_type_node;
+ if (mode == SQmode)
+ return unsigned_p ? sat_sq_type_node : sq_type_node;
+ if (mode == DQmode)
+ return unsigned_p ? sat_dq_type_node : dq_type_node;
+ if (mode == TQmode)
+ return unsigned_p ? sat_tq_type_node : tq_type_node;
+
+ if (mode == UQQmode)
+ return unsigned_p ? sat_uqq_type_node : uqq_type_node;
+ if (mode == UHQmode)
+ return unsigned_p ? sat_uhq_type_node : uhq_type_node;
+ if (mode == USQmode)
+ return unsigned_p ? sat_usq_type_node : usq_type_node;
+ if (mode == UDQmode)
+ return unsigned_p ? sat_udq_type_node : udq_type_node;
+ if (mode == UTQmode)
+ return unsigned_p ? sat_utq_type_node : utq_type_node;
+
+ if (mode == HAmode)
+ return unsigned_p ? sat_ha_type_node : ha_type_node;
+ if (mode == SAmode)
+ return unsigned_p ? sat_sa_type_node : sa_type_node;
+ if (mode == DAmode)
+ return unsigned_p ? sat_da_type_node : da_type_node;
+ if (mode == TAmode)
+ return unsigned_p ? sat_ta_type_node : ta_type_node;
+
+ if (mode == UHAmode)
+ return unsigned_p ? sat_uha_type_node : uha_type_node;
+ if (mode == USAmode)
+ return unsigned_p ? sat_usa_type_node : usa_type_node;
+ if (mode == UDAmode)
+ return unsigned_p ? sat_uda_type_node : uda_type_node;
+ if (mode == UTAmode)
+ return unsigned_p ? sat_uta_type_node : uta_type_node;
+ }
+
+ for (t = registered_builtin_types; t; t = TREE_CHAIN (t))
+ if (TYPE_MODE (TREE_VALUE (t)) == mode)
+ return TREE_VALUE (t);
+
+ return NULL_TREE;
+}
+
+static int
+lto_global_bindings_p (void)
+{
+ return cfun == NULL;
+}
+
+static void
+lto_set_decl_assembler_name (tree decl)
+{
+ /* This is almost the same as lhd_set_decl_assembler_name, except that
+ we need to uniquify file-scope names, even if they are not
+ TREE_PUBLIC, to avoid conflicts between individual files. */
+ tree id;
+
+ if (TREE_PUBLIC (decl))
+ id = targetm.mangle_decl_assembler_name (decl, DECL_NAME (decl));
+ else
+ {
+ const char *name = IDENTIFIER_POINTER (DECL_NAME (decl));
+ char *label;
+
+ ASM_FORMAT_PRIVATE_NAME (label, name, DECL_UID (decl));
+ id = get_identifier (label);
+ }
+
+ SET_DECL_ASSEMBLER_NAME (decl, id);
+}
+
+static tree
+lto_pushdecl (tree t ATTRIBUTE_UNUSED)
+{
+ /* Do nothing, since we get all information from DWARF and LTO
+ sections. */
+ return NULL_TREE;
+}
+
+static tree
+lto_getdecls (void)
+{
+ return registered_builtin_fndecls;
+}
+
+static void
+lto_write_globals (void)
+{
+ tree *vec = VEC_address (tree, lto_global_var_decls);
+ int len = VEC_length (tree, lto_global_var_decls);
+ wrapup_global_declarations (vec, len);
+ emit_debug_global_declarations (vec, len);
+ VEC_free (tree, gc, lto_global_var_decls);
+}
+
+static tree
+lto_builtin_function (tree decl)
+{
+ /* Record it. */
+ TREE_CHAIN (decl) = registered_builtin_fndecls;
+ registered_builtin_fndecls = decl;
+
+ return decl;
+}
+
+static void
+lto_register_builtin_type (tree type, const char *name)
+{
+ tree decl;
+
+ decl = build_decl (UNKNOWN_LOCATION, TYPE_DECL, get_identifier (name), type);
+ DECL_ARTIFICIAL (decl) = 1;
+ if (!TYPE_NAME (type))
+ TYPE_NAME (type) = decl;
+
+ registered_builtin_types = tree_cons (0, type, registered_builtin_types);
+}
+
+/* Build nodes that would have be created by the C front-end; necessary
+ for including builtin-types.def and ultimately builtins.def. */
+
+static void
+lto_build_c_type_nodes (void)
+{
+ gcc_assert (void_type_node);
+
+ void_list_node = build_tree_list (NULL_TREE, void_type_node);
+ string_type_node = build_pointer_type (char_type_node);
+ const_string_type_node
+ = build_pointer_type (build_qualified_type (char_type_node, TYPE_QUAL_CONST));
+
+ if (strcmp (SIZE_TYPE, "unsigned int") == 0)
+ {
+ intmax_type_node = integer_type_node;
+ uintmax_type_node = unsigned_type_node;
+ signed_size_type_node = integer_type_node;
+ }
+ else if (strcmp (SIZE_TYPE, "long unsigned int") == 0)
+ {
+ intmax_type_node = long_integer_type_node;
+ uintmax_type_node = long_unsigned_type_node;
+ signed_size_type_node = long_integer_type_node;
+ }
+ else if (strcmp (SIZE_TYPE, "long long unsigned int") == 0)
+ {
+ intmax_type_node = long_long_integer_type_node;
+ uintmax_type_node = long_long_unsigned_type_node;
+ signed_size_type_node = long_long_integer_type_node;
+ }
+ else
+ gcc_unreachable ();
+
+ wint_type_node = unsigned_type_node;
+ pid_type_node = integer_type_node;
+}
+
+
+/* Perform LTO-specific initialization. */
+
+static bool
+lto_init (void)
+{
+ /* We need to generate LTO if running in WPA mode. */
+ flag_generate_lto = flag_wpa;
+
+ /* Initialize libcpp line maps for gcc_assert to work. */
+ linemap_add (line_table, LC_RENAME, 0, NULL, 0);
+ linemap_add (line_table, LC_RENAME, 0, NULL, 0);
+
+ /* Create the basic integer types. */
+ build_common_tree_nodes (flag_signed_char);
+
+ /* Share char_type_node with whatever would be the default for the target.
+ char_type_node will be used for internal types such as
+ va_list_type_node but will not be present in the lto stream. */
+ /* ??? This breaks the more common case of consistent but non-standard
+ setting of flag_signed_char, so share according to flag_signed_char.
+ See PR42528. */
+ char_type_node
+ = flag_signed_char ? signed_char_type_node : unsigned_char_type_node;
+
+ /* Tell the middle end what type to use for the size of objects. */
+ if (strcmp (SIZE_TYPE, "unsigned int") == 0)
+ {
+ set_sizetype (unsigned_type_node);
+ size_type_node = unsigned_type_node;
+ }
+ else if (strcmp (SIZE_TYPE, "long unsigned int") == 0)
+ {
+ set_sizetype (long_unsigned_type_node);
+ size_type_node = long_unsigned_type_node;
+ }
+ else if (strcmp (SIZE_TYPE, "long long unsigned int") == 0)
+ {
+ set_sizetype (long_long_unsigned_type_node);
+ size_type_node = long_long_unsigned_type_node;
+ }
+ else
+ gcc_unreachable ();
+
+ /* The global tree for the main identifier is filled in by
+ language-specific front-end initialization that is not run in the
+ LTO back-end. It appears that all languages that perform such
+ initialization currently do so in the same way, so we do it here. */
+ if (main_identifier_node == NULL_TREE)
+ main_identifier_node = get_identifier ("main");
+
+ /* In the C++ front-end, fileptr_type_node is defined as a variant
+ copy of of ptr_type_node, rather than ptr_node itself. The
+ distinction should only be relevant to the front-end, so we
+ always use the C definition here in lto1. */
+ gcc_assert (fileptr_type_node == ptr_type_node);
+
+ ptrdiff_type_node = integer_type_node;
+
+ /* Create other basic types. */
+ build_common_tree_nodes_2 (/*short_double=*/false);
+ lto_build_c_type_nodes ();
+ gcc_assert (va_list_type_node);
+
+ if (TREE_CODE (va_list_type_node) == ARRAY_TYPE)
+ {
+ tree x = build_pointer_type (TREE_TYPE (va_list_type_node));
+ lto_define_builtins (x, x);
+ }
+ else
+ {
+ lto_define_builtins (va_list_type_node,
+ build_reference_type (va_list_type_node));
+ }
+
+ targetm.init_builtins ();
+ build_common_builtin_nodes ();
+
+ /* Assign names to the builtin types, otherwise they'll end up
+ as __unknown__ in debug info.
+ ??? We simply need to stop pre-seeding the streamer cache.
+ Below is modeled after from c-common.c:c_common_nodes_and_builtins */
+#define NAME_TYPE(t,n) \
+ if (t) \
+ TYPE_NAME (t) = build_decl (UNKNOWN_LOCATION, TYPE_DECL, \
+ get_identifier (n), t)
+ NAME_TYPE (integer_type_node, "int");
+ NAME_TYPE (char_type_node, "char");
+ NAME_TYPE (long_integer_type_node, "long int");
+ NAME_TYPE (unsigned_type_node, "unsigned int");
+ NAME_TYPE (long_unsigned_type_node, "long unsigned int");
+ NAME_TYPE (long_long_integer_type_node, "long long int");
+ NAME_TYPE (long_long_unsigned_type_node, "long long unsigned int");
+ NAME_TYPE (short_integer_type_node, "short int");
+ NAME_TYPE (short_unsigned_type_node, "short unsigned int");
+ if (signed_char_type_node != char_type_node)
+ NAME_TYPE (signed_char_type_node, "signed char");
+ if (unsigned_char_type_node != char_type_node)
+ NAME_TYPE (unsigned_char_type_node, "unsigned char");
+ NAME_TYPE (float_type_node, "float");
+ NAME_TYPE (double_type_node, "double");
+ NAME_TYPE (long_double_type_node, "long double");
+ NAME_TYPE (void_type_node, "void");
+ NAME_TYPE (boolean_type_node, "bool");
+#undef NAME_TYPE
+
+ /* Initialize LTO-specific data structures. */
+ lto_global_var_decls = VEC_alloc (tree, gc, 256);
+ in_lto_p = true;
+
+ return true;
+}
+
+/* Initialize tree structures required by the LTO front end. */
+
+static void lto_init_ts (void)
+{
+ tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1;
+}
+
+#undef LANG_HOOKS_NAME
+#define LANG_HOOKS_NAME "GNU GIMPLE"
+#undef LANG_HOOKS_OPTION_LANG_MASK
+#define LANG_HOOKS_OPTION_LANG_MASK lto_option_lang_mask
+#undef LANG_HOOKS_COMPLAIN_WRONG_LANG_P
+#define LANG_HOOKS_COMPLAIN_WRONG_LANG_P lto_complain_wrong_lang_p
+#undef LANG_HOOKS_INIT_OPTIONS_STRUCT
+#define LANG_HOOKS_INIT_OPTIONS_STRUCT lto_init_options_struct
+#undef LANG_HOOKS_HANDLE_OPTION
+#define LANG_HOOKS_HANDLE_OPTION lto_handle_option
+#undef LANG_HOOKS_POST_OPTIONS
+#define LANG_HOOKS_POST_OPTIONS lto_post_options
+#undef LANG_HOOKS_GET_ALIAS_SET
+#define LANG_HOOKS_GET_ALIAS_SET gimple_get_alias_set
+#undef LANG_HOOKS_TYPE_FOR_MODE
+#define LANG_HOOKS_TYPE_FOR_MODE lto_type_for_mode
+#undef LANG_HOOKS_TYPE_FOR_SIZE
+#define LANG_HOOKS_TYPE_FOR_SIZE lto_type_for_size
+#undef LANG_HOOKS_SET_DECL_ASSEMBLER_NAME
+#define LANG_HOOKS_SET_DECL_ASSEMBLER_NAME lto_set_decl_assembler_name
+#undef LANG_HOOKS_GLOBAL_BINDINGS_P
+#define LANG_HOOKS_GLOBAL_BINDINGS_P lto_global_bindings_p
+#undef LANG_HOOKS_PUSHDECL
+#define LANG_HOOKS_PUSHDECL lto_pushdecl
+#undef LANG_HOOKS_GETDECLS
+#define LANG_HOOKS_GETDECLS lto_getdecls
+#undef LANG_HOOKS_WRITE_GLOBALS
+#define LANG_HOOKS_WRITE_GLOBALS lto_write_globals
+#undef LANG_HOOKS_REGISTER_BUILTIN_TYPE
+#define LANG_HOOKS_REGISTER_BUILTIN_TYPE lto_register_builtin_type
+#undef LANG_HOOKS_BUILTIN_FUNCTION
+#define LANG_HOOKS_BUILTIN_FUNCTION lto_builtin_function
+#undef LANG_HOOKS_INIT
+#define LANG_HOOKS_INIT lto_init
+#undef LANG_HOOKS_PARSE_FILE
+#define LANG_HOOKS_PARSE_FILE lto_main
+#undef LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION
+#define LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION tree_rest_of_compilation
+#undef LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS
+#define LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS true
+#undef LANG_HOOKS_TYPES_COMPATIBLE_P
+#define LANG_HOOKS_TYPES_COMPATIBLE_P NULL
+#undef LANG_HOOKS_EH_PERSONALITY
+#define LANG_HOOKS_EH_PERSONALITY lto_eh_personality
+
+/* Attribute hooks. */
+#undef LANG_HOOKS_COMMON_ATTRIBUTE_TABLE
+#define LANG_HOOKS_COMMON_ATTRIBUTE_TABLE lto_attribute_table
+#undef LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE
+#define LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE lto_format_attribute_table
+
+#undef LANG_HOOKS_BEGIN_SECTION
+#define LANG_HOOKS_BEGIN_SECTION lto_obj_begin_section
+#undef LANG_HOOKS_APPEND_DATA
+#define LANG_HOOKS_APPEND_DATA lto_obj_append_data
+#undef LANG_HOOKS_END_SECTION
+#define LANG_HOOKS_END_SECTION lto_obj_end_section
+
+#undef LANG_HOOKS_INIT_TS
+#define LANG_HOOKS_INIT_TS lto_init_ts
+
+struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
+
+/* Language hooks that are not part of lang_hooks. */
+
+tree
+convert (tree type ATTRIBUTE_UNUSED, tree expr ATTRIBUTE_UNUSED)
+{
+ gcc_unreachable ();
+}
+
+/* Tree walking support. */
+
+static enum lto_tree_node_structure_enum
+lto_tree_node_structure (union lang_tree_node *t ATTRIBUTE_UNUSED)
+{
+ return TS_LTO_GENERIC;
+}
+
+#include "ggc.h"
+#include "gtype-lto.h"
+#include "gt-lto-lto-lang.h"
diff --git a/gcc/lto/lto-object.c b/gcc/lto/lto-object.c
new file mode 100644
index 000000000..3be58dec3
--- /dev/null
+++ b/gcc/lto/lto-object.c
@@ -0,0 +1,368 @@
+/* LTO routines to use object files.
+ Copyright 2010 Free Software Foundation, Inc.
+ Written by Ian Lance Taylor, Google.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "diagnostic-core.h"
+#include "lto.h"
+#include "tm.h"
+#include "lto-streamer.h"
+#include "simple-object.h"
+
+/* Segment name for LTO sections. This is only used for Mach-O.
+ FIXME: This needs to be kept in sync with darwin.c. */
+
+#define LTO_SEGMENT_NAME "__GNU_LTO"
+
+/* An LTO file wrapped around an simple_object. */
+
+struct lto_simple_object
+{
+ /* The base information. */
+ lto_file base;
+
+ /* The system file descriptor. */
+ int fd;
+
+ /* The simple_object if we are reading the file. */
+ simple_object_read *sobj_r;
+
+ /* The simple_object if we are writing the file. */
+ simple_object_write *sobj_w;
+
+ /* The currently active section. */
+ simple_object_write_section *section;
+};
+
+/* Saved simple_object attributes. FIXME: Once set, this is never
+ cleared. */
+
+static simple_object_attributes *saved_attributes;
+
+/* Initialize FILE, an LTO file object for FILENAME. */
+
+static void
+lto_file_init (lto_file *file, const char *filename, off_t offset)
+{
+ file->filename = filename;
+ file->offset = offset;
+}
+
+/* Open the file FILENAME. It WRITABLE is true, the file is opened
+ for write and, if necessary, created. Otherwise, the file is
+ opened for reading. Returns the opened file. */
+
+lto_file *
+lto_obj_file_open (const char *filename, bool writable)
+{
+ const char *offset_p;
+ long loffset;
+ int consumed;
+ char *fname;
+ off_t offset;
+ struct lto_simple_object *lo;
+ const char *errmsg;
+ int err;
+
+ offset_p = strrchr (filename, '@');
+ if (offset_p != NULL
+ && offset_p != filename
+ && sscanf (offset_p, "@%li%n", &loffset, &consumed) >= 1
+ && strlen (offset_p) == (unsigned int) consumed)
+ {
+ fname = XNEWVEC (char, offset_p - filename + 1);
+ memcpy (fname, filename, offset_p - filename);
+ fname[offset_p - filename] = '\0';
+ offset = (off_t) loffset;
+ }
+ else
+ {
+ fname = xstrdup (filename);
+ offset = 0;
+ }
+
+ lo = XCNEW (struct lto_simple_object);
+ lto_file_init ((lto_file *) lo, fname, offset);
+
+ lo->fd = open (fname,
+ (writable
+ ? O_WRONLY | O_CREAT | O_BINARY
+ : O_RDONLY | O_BINARY),
+ 0666);
+ if (lo->fd == -1)
+ {
+ error ("open %s failed: %s", fname, xstrerror (errno));
+ goto fail;
+ }
+
+ if (!writable)
+ {
+ simple_object_attributes *attrs;
+
+ lo->sobj_r = simple_object_start_read (lo->fd, offset, LTO_SEGMENT_NAME,
+ &errmsg, &err);
+ if (lo->sobj_r == NULL)
+ goto fail_errmsg;
+
+ attrs = simple_object_fetch_attributes (lo->sobj_r, &errmsg, &err);
+ if (attrs == NULL)
+ goto fail_errmsg;
+
+ if (saved_attributes == NULL)
+ saved_attributes = attrs;
+ else
+ {
+ errmsg = simple_object_attributes_merge (saved_attributes, attrs,
+ &err);
+ if (errmsg != NULL)
+ goto fail_errmsg;
+ }
+ }
+ else
+ {
+ gcc_assert (saved_attributes != NULL);
+ lo->sobj_w = simple_object_start_write (saved_attributes,
+ LTO_SEGMENT_NAME,
+ &errmsg, &err);
+ if (lo->sobj_w == NULL)
+ goto fail_errmsg;
+ }
+
+ return &lo->base;
+
+ fail_errmsg:
+ if (err == 0)
+ error ("%s: %s", fname, errmsg);
+ else
+ error ("%s: %s: %s", fname, errmsg, xstrerror (err));
+
+ fail:
+ if (lo != NULL)
+ lto_obj_file_close ((lto_file *) lo);
+ return NULL;
+}
+
+/* Close FILE. If FILE was opened for writing, it is written out
+ now. */
+
+void
+lto_obj_file_close (lto_file *file)
+{
+ struct lto_simple_object *lo = (struct lto_simple_object *) file;
+
+ if (lo->sobj_r != NULL)
+ simple_object_release_read (lo->sobj_r);
+ else if (lo->sobj_w != NULL)
+ {
+ const char *errmsg;
+ int err;
+
+ gcc_assert (lo->base.offset == 0);
+
+ errmsg = simple_object_write_to_file (lo->sobj_w, lo->fd, &err);
+ if (errmsg != NULL)
+ {
+ if (err == 0)
+ fatal_error ("%s", errmsg);
+ else
+ fatal_error ("%s: %s", errmsg, xstrerror (err));
+ }
+
+ simple_object_release_write (lo->sobj_w);
+ }
+
+ if (lo->fd != -1)
+ {
+ if (close (lo->fd) < 0)
+ fatal_error ("close: %s", xstrerror (errno));
+ }
+}
+
+/* This is passed to lto_obj_add_section. */
+
+struct lto_obj_add_section_data
+{
+ /* The hash table of sections. */
+ htab_t section_hash_table;
+ /* The offset of this file. */
+ off_t base_offset;
+};
+
+/* This is called for each section in the file. */
+
+static int
+lto_obj_add_section (void *data, const char *name, off_t offset,
+ off_t length)
+{
+ struct lto_obj_add_section_data *loasd =
+ (struct lto_obj_add_section_data *) data;
+ htab_t section_hash_table = (htab_t) loasd->section_hash_table;
+ char *new_name;
+ struct lto_section_slot s_slot;
+ void **slot;
+
+ if (strncmp (name, LTO_SECTION_NAME_PREFIX,
+ strlen (LTO_SECTION_NAME_PREFIX)) != 0)
+ return 1;
+
+ new_name = xstrdup (name);
+ s_slot.name = new_name;
+ slot = htab_find_slot (section_hash_table, &s_slot, INSERT);
+ if (*slot == NULL)
+ {
+ struct lto_section_slot *new_slot = XNEW (struct lto_section_slot);
+
+ new_slot->name = new_name;
+ new_slot->start = loasd->base_offset + offset;
+ new_slot->len = length;
+ *slot = new_slot;
+ }
+ else
+ {
+ error ("two or more sections for %s", new_name);
+ return 0;
+ }
+
+ return 1;
+}
+
+/* Build a hash table whose key is the section name and whose data is
+ the start and size of each section in the .o file. */
+
+htab_t
+lto_obj_build_section_table (lto_file *lto_file)
+{
+ struct lto_simple_object *lo = (struct lto_simple_object *) lto_file;
+ htab_t section_hash_table;
+ struct lto_obj_add_section_data loasd;
+ const char *errmsg;
+ int err;
+
+ section_hash_table = lto_obj_create_section_hash_table ();
+
+ gcc_assert (lo->sobj_r != NULL && lo->sobj_w == NULL);
+ loasd.section_hash_table = section_hash_table;
+ loasd.base_offset = lo->base.offset;
+ errmsg = simple_object_find_sections (lo->sobj_r, lto_obj_add_section,
+ &loasd, &err);
+ if (errmsg != NULL)
+ {
+ if (err == 0)
+ error ("%s", errmsg);
+ else
+ error ("%s: %s", errmsg, xstrerror (err));
+ htab_delete (section_hash_table);
+ return NULL;
+ }
+
+ return section_hash_table;
+}
+
+/* The current output file. */
+
+static lto_file *current_out_file;
+
+/* Set the current output file. Return the old one. */
+
+lto_file *
+lto_set_current_out_file (lto_file *file)
+{
+ lto_file *old_file;
+
+ old_file = current_out_file;
+ current_out_file = file;
+ return old_file;
+}
+
+/* Return the current output file. */
+
+lto_file *
+lto_get_current_out_file (void)
+{
+ return current_out_file;
+}
+
+/* Begin writing a new section named NAME in the current output
+ file. */
+
+void
+lto_obj_begin_section (const char *name)
+{
+ struct lto_simple_object *lo;
+ int align;
+ const char *errmsg;
+ int err;
+
+ lo = (struct lto_simple_object *) current_out_file;
+ gcc_assert (lo != NULL
+ && lo->sobj_r == NULL
+ && lo->sobj_w != NULL
+ && lo->section == NULL);
+
+ align = exact_log2 (POINTER_SIZE / BITS_PER_UNIT);
+ lo->section = simple_object_write_create_section (lo->sobj_w, name, align,
+ &errmsg, &err);
+ if (lo->section == NULL)
+ {
+ if (err == 0)
+ fatal_error ("%s", errmsg);
+ else
+ fatal_error ("%s: %s", errmsg, xstrerror (errno));
+ }
+}
+
+/* Add data to a section. BLOCK is a pointer to memory containing
+ DATA. */
+
+void
+lto_obj_append_data (const void *data, size_t len, void *block)
+{
+ struct lto_simple_object *lo;
+ const char *errmsg;
+ int err;
+
+ lo = (struct lto_simple_object *) current_out_file;
+ gcc_assert (lo != NULL && lo->section != NULL);
+
+ errmsg = simple_object_write_add_data (lo->sobj_w, lo->section, data, len,
+ 1, &err);
+ if (errmsg != NULL)
+ {
+ if (err == 0)
+ fatal_error ("%s", errmsg);
+ else
+ fatal_error ("%s: %s", errmsg, xstrerror (errno));
+ }
+
+ free (block);
+}
+
+/* Stop writing to the current output section. */
+
+void
+lto_obj_end_section (void)
+{
+ struct lto_simple_object *lo;
+
+ lo = (struct lto_simple_object *) current_out_file;
+ gcc_assert (lo != NULL && lo->section != NULL);
+ lo->section = NULL;
+}
diff --git a/gcc/lto/lto-tree.h b/gcc/lto/lto-tree.h
new file mode 100644
index 000000000..d187fe20d
--- /dev/null
+++ b/gcc/lto/lto-tree.h
@@ -0,0 +1,58 @@
+/* Language-dependent trees for LTO.
+ Copyright 2009, 2010 Free Software Foundation, Inc.
+ Contributed by CodeSourcery, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_LTO_TREE_H
+#define GCC_LTO_TREE_H
+
+#include "plugin-api.h"
+
+struct GTY(()) lang_identifier
+{
+ struct tree_identifier base;
+};
+
+struct GTY(()) lang_decl
+{
+ int dummy; /* Added because ggc does not like empty structs. */
+};
+
+struct GTY((variable_size)) lang_type
+{
+ int dummy; /* Added because ggc does not like empty structs. */
+};
+
+struct GTY(()) language_function
+{
+ int dummy; /* Added because ggc does not like empty structs. */
+};
+
+enum lto_tree_node_structure_enum {
+ TS_LTO_GENERIC
+};
+
+union GTY((desc ("lto_tree_node_structure (&%h)"),
+ chain_next ("(union lang_tree_node *)TREE_CHAIN (&%h.generic)")))
+ lang_tree_node
+{
+ union tree_node GTY ((tag ("TS_LTO_GENERIC"),
+ desc ("tree_node_structure (&%h)"))) generic;
+};
+
+#endif /* GCC_LTO_TREE_H */
diff --git a/gcc/lto/lto.c b/gcc/lto/lto.c
new file mode 100644
index 000000000..64139717b
--- /dev/null
+++ b/gcc/lto/lto.c
@@ -0,0 +1,2489 @@
+/* Top-level LTO routines.
+ Copyright 2009, 2010 Free Software Foundation, Inc.
+ Contributed by CodeSourcery, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "opts.h"
+#include "toplev.h"
+#include "tree.h"
+#include "diagnostic-core.h"
+#include "tm.h"
+#include "cgraph.h"
+#include "ggc.h"
+#include "tree-ssa-operands.h"
+#include "tree-pass.h"
+#include "langhooks.h"
+#include "vec.h"
+#include "bitmap.h"
+#include "pointer-set.h"
+#include "ipa-prop.h"
+#include "common.h"
+#include "debug.h"
+#include "timevar.h"
+#include "gimple.h"
+#include "lto.h"
+#include "lto-tree.h"
+#include "lto-streamer.h"
+#include "splay-tree.h"
+#include "params.h"
+
+static GTY(()) tree first_personality_decl;
+
+/* Returns a hash code for P. */
+
+static hashval_t
+hash_name (const void *p)
+{
+ const struct lto_section_slot *ds = (const struct lto_section_slot *) p;
+ return (hashval_t) htab_hash_string (ds->name);
+}
+
+
+/* Returns nonzero if P1 and P2 are equal. */
+
+static int
+eq_name (const void *p1, const void *p2)
+{
+ const struct lto_section_slot *s1 =
+ (const struct lto_section_slot *) p1;
+ const struct lto_section_slot *s2 =
+ (const struct lto_section_slot *) p2;
+
+ return strcmp (s1->name, s2->name) == 0;
+}
+
+/* Free lto_section_slot */
+
+static void
+free_with_string (void *arg)
+{
+ struct lto_section_slot *s = (struct lto_section_slot *)arg;
+
+ free (CONST_CAST (char *, s->name));
+ free (arg);
+}
+
+/* Create section hash table */
+
+htab_t
+lto_obj_create_section_hash_table (void)
+{
+ return htab_create (37, hash_name, eq_name, free_with_string);
+}
+
+/* Read the constructors and inits. */
+
+static void
+lto_materialize_constructors_and_inits (struct lto_file_decl_data * file_data)
+{
+ size_t len;
+ const char *data = lto_get_section_data (file_data,
+ LTO_section_static_initializer,
+ NULL, &len);
+ lto_input_constructors_and_inits (file_data, data);
+ lto_free_section_data (file_data, LTO_section_static_initializer, NULL,
+ data, len);
+}
+
+/* Return true when NODE has a clone that is analyzed (i.e. we need
+ to load its body even if the node itself is not needed). */
+
+static bool
+has_analyzed_clone_p (struct cgraph_node *node)
+{
+ struct cgraph_node *orig = node;
+ node = node->clones;
+ if (node)
+ while (node != orig)
+ {
+ if (node->analyzed)
+ return true;
+ if (node->clones)
+ node = node->clones;
+ else if (node->next_sibling_clone)
+ node = node->next_sibling_clone;
+ else
+ {
+ while (node != orig && !node->next_sibling_clone)
+ node = node->clone_of;
+ if (node != orig)
+ node = node->next_sibling_clone;
+ }
+ }
+ return false;
+}
+
+/* Read the function body for the function associated with NODE. */
+
+static void
+lto_materialize_function (struct cgraph_node *node)
+{
+ tree decl;
+ struct lto_file_decl_data *file_data;
+ const char *data, *name;
+ size_t len;
+
+ decl = node->decl;
+ /* Read in functions with body (analyzed nodes)
+ and also functions that are needed to produce virtual clones. */
+ if (node->analyzed || has_analyzed_clone_p (node))
+ {
+ /* Clones don't need to be read. */
+ if (node->clone_of)
+ return;
+ file_data = node->local.lto_file_data;
+ name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
+
+ /* We may have renamed the declaration, e.g., a static function. */
+ name = lto_get_decl_name_mapping (file_data, name);
+
+ data = lto_get_section_data (file_data, LTO_section_function_body,
+ name, &len);
+ if (!data)
+ fatal_error ("%s: section %s is missing",
+ file_data->file_name,
+ name);
+
+ gcc_assert (DECL_STRUCT_FUNCTION (decl) == NULL);
+
+ /* Load the function body only if not operating in WPA mode. In
+ WPA mode, the body of the function is not needed. */
+ if (!flag_wpa)
+ {
+ allocate_struct_function (decl, false);
+ announce_function (decl);
+ lto_input_function_body (file_data, decl, data);
+ if (DECL_FUNCTION_PERSONALITY (decl) && !first_personality_decl)
+ first_personality_decl = DECL_FUNCTION_PERSONALITY (decl);
+ lto_stats.num_function_bodies++;
+ }
+
+ lto_free_section_data (file_data, LTO_section_function_body, name,
+ data, len);
+ if (!flag_wpa)
+ ggc_collect ();
+ }
+
+ /* Let the middle end know about the function. */
+ rest_of_decl_compilation (decl, 1, 0);
+}
+
+
+/* Decode the content of memory pointed to by DATA in the the
+ in decl state object STATE. DATA_IN points to a data_in structure for
+ decoding. Return the address after the decoded object in the input. */
+
+static const uint32_t *
+lto_read_in_decl_state (struct data_in *data_in, const uint32_t *data,
+ struct lto_in_decl_state *state)
+{
+ uint32_t ix;
+ tree decl;
+ uint32_t i, j;
+
+ ix = *data++;
+ decl = lto_streamer_cache_get (data_in->reader_cache, (int) ix);
+ if (TREE_CODE (decl) != FUNCTION_DECL)
+ {
+ gcc_assert (decl == void_type_node);
+ decl = NULL_TREE;
+ }
+ state->fn_decl = decl;
+
+ for (i = 0; i < LTO_N_DECL_STREAMS; i++)
+ {
+ uint32_t size = *data++;
+ tree *decls = ggc_alloc_vec_tree (size);
+
+ for (j = 0; j < size; j++)
+ {
+ decls[j] = lto_streamer_cache_get (data_in->reader_cache, data[j]);
+
+ /* Register every type in the global type table. If the
+ type existed already, use the existing type. */
+ if (TYPE_P (decls[j]))
+ decls[j] = gimple_register_type (decls[j]);
+ }
+
+ state->streams[i].size = size;
+ state->streams[i].trees = decls;
+ data += size;
+ }
+
+ return data;
+}
+
+
+/* Read all the symbols from buffer DATA, using descriptors in DECL_DATA.
+ RESOLUTIONS is the set of symbols picked by the linker (read from the
+ resolution file when the linker plugin is being used). */
+
+static void
+lto_read_decls (struct lto_file_decl_data *decl_data, const void *data,
+ VEC(ld_plugin_symbol_resolution_t,heap) *resolutions)
+{
+ const struct lto_decl_header *header = (const struct lto_decl_header *) data;
+ const int decl_offset = sizeof (struct lto_decl_header);
+ const int main_offset = decl_offset + header->decl_state_size;
+ const int string_offset = main_offset + header->main_size;
+ struct lto_input_block ib_main;
+ struct data_in *data_in;
+ unsigned int i;
+ const uint32_t *data_ptr, *data_end;
+ uint32_t num_decl_states;
+
+ LTO_INIT_INPUT_BLOCK (ib_main, (const char *) data + main_offset, 0,
+ header->main_size);
+
+ data_in = lto_data_in_create (decl_data, (const char *) data + string_offset,
+ header->string_size, resolutions);
+
+ /* Read the global declarations and types. */
+ while (ib_main.p < ib_main.len)
+ {
+ tree t = lto_input_tree (&ib_main, data_in);
+ gcc_assert (t && ib_main.p <= ib_main.len);
+ }
+
+ /* Read in lto_in_decl_state objects. */
+ data_ptr = (const uint32_t *) ((const char*) data + decl_offset);
+ data_end =
+ (const uint32_t *) ((const char*) data_ptr + header->decl_state_size);
+ num_decl_states = *data_ptr++;
+
+ gcc_assert (num_decl_states > 0);
+ decl_data->global_decl_state = lto_new_in_decl_state ();
+ data_ptr = lto_read_in_decl_state (data_in, data_ptr,
+ decl_data->global_decl_state);
+
+ /* Read in per-function decl states and enter them in hash table. */
+ decl_data->function_decl_states =
+ htab_create_ggc (37, lto_hash_in_decl_state, lto_eq_in_decl_state, NULL);
+
+ for (i = 1; i < num_decl_states; i++)
+ {
+ struct lto_in_decl_state *state = lto_new_in_decl_state ();
+ void **slot;
+
+ data_ptr = lto_read_in_decl_state (data_in, data_ptr, state);
+ slot = htab_find_slot (decl_data->function_decl_states, state, INSERT);
+ gcc_assert (*slot == NULL);
+ *slot = state;
+ }
+
+ if (data_ptr != data_end)
+ internal_error ("bytecode stream: garbage at the end of symbols section");
+
+ /* Set the current decl state to be the global state. */
+ decl_data->current_decl_state = decl_data->global_decl_state;
+
+ lto_data_in_delete (data_in);
+}
+
+/* Custom version of strtoll, which is not portable. */
+
+static HOST_WIDEST_INT
+lto_parse_hex (const char *p)
+{
+ HOST_WIDEST_INT ret = 0;
+
+ for (; *p != '\0'; ++p)
+ {
+ char c = *p;
+ unsigned char part;
+ ret <<= 4;
+ if (c >= '0' && c <= '9')
+ part = c - '0';
+ else if (c >= 'a' && c <= 'f')
+ part = c - 'a' + 10;
+ else if (c >= 'A' && c <= 'F')
+ part = c - 'A' + 10;
+ else
+ internal_error ("could not parse hex number");
+ ret |= part;
+ }
+
+ return ret;
+}
+
+/* Read resolution for file named FILE_NAME. The resolution is read from
+ RESOLUTION. */
+
+static void
+lto_resolution_read (splay_tree file_ids, FILE *resolution, lto_file *file)
+{
+ /* We require that objects in the resolution file are in the same
+ order as the lto1 command line. */
+ unsigned int name_len;
+ char *obj_name;
+ unsigned int num_symbols;
+ unsigned int i;
+ struct lto_file_decl_data *file_data;
+ unsigned max_index = 0;
+ splay_tree_node nd = NULL;
+
+ if (!resolution)
+ return;
+
+ name_len = strlen (file->filename);
+ obj_name = XNEWVEC (char, name_len + 1);
+ fscanf (resolution, " "); /* Read white space. */
+
+ fread (obj_name, sizeof (char), name_len, resolution);
+ obj_name[name_len] = '\0';
+ if (strcmp (obj_name, file->filename) != 0)
+ internal_error ("unexpected file name %s in linker resolution file. "
+ "Expected %s", obj_name, file->filename);
+ if (file->offset != 0)
+ {
+ int t;
+ char offset_p[17];
+ HOST_WIDEST_INT offset;
+ t = fscanf (resolution, "@0x%16s", offset_p);
+ if (t != 1)
+ internal_error ("could not parse file offset");
+ offset = lto_parse_hex (offset_p);
+ if (offset != file->offset)
+ internal_error ("unexpected offset");
+ }
+
+ free (obj_name);
+
+ fscanf (resolution, "%u", &num_symbols);
+
+ for (i = 0; i < num_symbols; i++)
+ {
+ int t;
+ unsigned index, id;
+ char r_str[27];
+ enum ld_plugin_symbol_resolution r = (enum ld_plugin_symbol_resolution) 0;
+ unsigned int j;
+ unsigned int lto_resolution_str_len =
+ sizeof (lto_resolution_str) / sizeof (char *);
+
+ t = fscanf (resolution, "%u %x %26s %*[^\n]\n", &index, &id, r_str);
+ if (t != 3)
+ internal_error ("invalid line in the resolution file");
+ if (index > max_index)
+ max_index = index;
+
+ for (j = 0; j < lto_resolution_str_len; j++)
+ {
+ if (strcmp (lto_resolution_str[j], r_str) == 0)
+ {
+ r = (enum ld_plugin_symbol_resolution) j;
+ break;
+ }
+ }
+ if (j == lto_resolution_str_len)
+ internal_error ("invalid resolution in the resolution file");
+
+ if (!(nd && nd->key == id))
+ {
+ nd = splay_tree_lookup (file_ids, id);
+ if (nd == NULL)
+ internal_error ("resolution sub id %x not in object file", id);
+ }
+
+ file_data = (struct lto_file_decl_data *)nd->value;
+ if (cgraph_dump_file)
+ fprintf (cgraph_dump_file, "Adding resolution %u %u to id %x\n",
+ index, r, file_data->id);
+ VEC_safe_grow_cleared (ld_plugin_symbol_resolution_t, heap,
+ file_data->resolutions,
+ max_index + 1);
+ VEC_replace (ld_plugin_symbol_resolution_t,
+ file_data->resolutions, index, r);
+ }
+}
+
+/* Is the name for a id'ed LTO section? */
+
+static int
+lto_section_with_id (const char *name, unsigned *id)
+{
+ const char *s;
+
+ if (strncmp (name, LTO_SECTION_NAME_PREFIX, strlen (LTO_SECTION_NAME_PREFIX)))
+ return 0;
+ s = strrchr (name, '.');
+ return s && sscanf (s, ".%x", id) == 1;
+}
+
+/* Create file_data of each sub file id */
+
+static int
+create_subid_section_table (void **slot, void *data)
+{
+ struct lto_section_slot s_slot, *new_slot;
+ struct lto_section_slot *ls = *(struct lto_section_slot **)slot;
+ splay_tree file_ids = (splay_tree)data;
+ unsigned id;
+ splay_tree_node nd;
+ void **hash_slot;
+ char *new_name;
+ struct lto_file_decl_data *file_data;
+
+ if (!lto_section_with_id (ls->name, &id))
+ return 1;
+
+ /* Find hash table of sub module id */
+ nd = splay_tree_lookup (file_ids, id);
+ if (nd != NULL)
+ {
+ file_data = (struct lto_file_decl_data *)nd->value;
+ }
+ else
+ {
+ file_data = ggc_alloc_lto_file_decl_data ();
+ memset(file_data, 0, sizeof (struct lto_file_decl_data));
+ file_data->id = id;
+ file_data->section_hash_table = lto_obj_create_section_hash_table ();;
+ splay_tree_insert (file_ids, id, (splay_tree_value)file_data);
+ }
+
+ /* Copy section into sub module hash table */
+ new_name = XDUPVEC (char, ls->name, strlen (ls->name) + 1);
+ s_slot.name = new_name;
+ hash_slot = htab_find_slot (file_data->section_hash_table, &s_slot, INSERT);
+ gcc_assert (*hash_slot == NULL);
+
+ new_slot = XDUP (struct lto_section_slot, ls);
+ new_slot->name = new_name;
+ *hash_slot = new_slot;
+ return 1;
+}
+
+/* Read declarations and other initializations for a FILE_DATA. */
+
+static void
+lto_file_finalize (struct lto_file_decl_data *file_data, lto_file *file)
+{
+ const char *data;
+ size_t len;
+
+ file_data->renaming_hash_table = lto_create_renaming_table ();
+ file_data->file_name = file->filename;
+ data = lto_get_section_data (file_data, LTO_section_decls, NULL, &len);
+ if (data == NULL)
+ {
+ internal_error ("cannot read LTO decls from %s", file_data->file_name);
+ return;
+ }
+ lto_read_decls (file_data, data, file_data->resolutions);
+ lto_free_section_data (file_data, LTO_section_decls, NULL, data, len);
+}
+
+struct lwstate
+{
+ lto_file *file;
+ struct lto_file_decl_data **file_data;
+ int *count;
+};
+
+/* Traverse ids and create a list of file_datas out of it. */
+
+static int lto_create_files_from_ids (splay_tree_node node, void *data)
+{
+ struct lwstate *lw = (struct lwstate *)data;
+ struct lto_file_decl_data *file_data = (struct lto_file_decl_data *)node->value;
+
+ lto_file_finalize (file_data, lw->file);
+ if (cgraph_dump_file)
+ fprintf (cgraph_dump_file, "Creating file %s with sub id %x\n",
+ file_data->file_name, file_data->id);
+ file_data->next = *lw->file_data;
+ *lw->file_data = file_data;
+ (*lw->count)++;
+ return 0;
+}
+
+/* Generate a TREE representation for all types and external decls
+ entities in FILE.
+
+ Read all of the globals out of the file. Then read the cgraph
+ and process the .o index into the cgraph nodes so that it can open
+ the .o file to load the functions and ipa information. */
+
+static struct lto_file_decl_data *
+lto_file_read (lto_file *file, FILE *resolution_file, int *count)
+{
+ struct lto_file_decl_data *file_data = NULL;
+ splay_tree file_ids;
+ htab_t section_hash_table;
+ struct lwstate state;
+
+ section_hash_table = lto_obj_build_section_table (file);
+
+ /* Find all sub modules in the object and put their sections into new hash
+ tables in a splay tree. */
+ file_ids = splay_tree_new (splay_tree_compare_ints, NULL, NULL);
+ htab_traverse (section_hash_table, create_subid_section_table, file_ids);
+
+ /* Add resolutions to file ids */
+ lto_resolution_read (file_ids, resolution_file, file);
+
+ /* Finalize each lto file for each submodule in the merged object
+ and create list for returning. */
+ state.file = file;
+ state.file_data = &file_data;
+ state.count = count;
+ splay_tree_foreach (file_ids, lto_create_files_from_ids, &state);
+
+ splay_tree_delete (file_ids);
+ htab_delete (section_hash_table);
+
+ return file_data;
+}
+
+#if HAVE_MMAP_FILE && HAVE_SYSCONF && defined _SC_PAGE_SIZE
+#define LTO_MMAP_IO 1
+#endif
+
+#if LTO_MMAP_IO
+/* Page size of machine is used for mmap and munmap calls. */
+static size_t page_mask;
+#endif
+
+/* Get the section data of length LEN from FILENAME starting at
+ OFFSET. The data segment must be freed by the caller when the
+ caller is finished. Returns NULL if all was not well. */
+
+static char *
+lto_read_section_data (struct lto_file_decl_data *file_data,
+ intptr_t offset, size_t len)
+{
+ char *result;
+ static int fd = -1;
+ static char *fd_name;
+#if LTO_MMAP_IO
+ intptr_t computed_len;
+ intptr_t computed_offset;
+ intptr_t diff;
+#endif
+
+ /* Keep a single-entry file-descriptor cache. The last file we
+ touched will get closed at exit.
+ ??? Eventually we want to add a more sophisticated larger cache
+ or rather fix function body streaming to not stream them in
+ practically random order. */
+ if (fd != -1
+ && strcmp (fd_name, file_data->file_name) != 0)
+ {
+ free (fd_name);
+ close (fd);
+ fd = -1;
+ }
+ if (fd == -1)
+ {
+ fd = open (file_data->file_name, O_RDONLY|O_BINARY);
+ if (fd == -1)
+ return NULL;
+ fd_name = xstrdup (file_data->file_name);
+ }
+
+#if LTO_MMAP_IO
+ if (!page_mask)
+ {
+ size_t page_size = sysconf (_SC_PAGE_SIZE);
+ page_mask = ~(page_size - 1);
+ }
+
+ computed_offset = offset & page_mask;
+ diff = offset - computed_offset;
+ computed_len = len + diff;
+
+ result = (char *) mmap (NULL, computed_len, PROT_READ, MAP_PRIVATE,
+ fd, computed_offset);
+ if (result == MAP_FAILED)
+ return NULL;
+
+ return result + diff;
+#else
+ result = (char *) xmalloc (len);
+ if (lseek (fd, offset, SEEK_SET) != offset
+ || read (fd, result, len) != (ssize_t) len)
+ {
+ free (result);
+ result = NULL;
+ }
+#ifdef __MINGW32__
+ /* Native windows doesn't supports delayed unlink on opened file. So
+ we close file here again. This produces higher I/O load, but at least
+ it prevents to have dangling file handles preventing unlink. */
+ free (fd_name);
+ fd_name = NULL;
+ close (fd);
+ fd = -1;
+#endif
+ return result;
+#endif
+}
+
+
+/* Get the section data from FILE_DATA of SECTION_TYPE with NAME.
+ NAME will be NULL unless the section type is for a function
+ body. */
+
+static const char *
+get_section_data (struct lto_file_decl_data *file_data,
+ enum lto_section_type section_type,
+ const char *name,
+ size_t *len)
+{
+ htab_t section_hash_table = file_data->section_hash_table;
+ struct lto_section_slot *f_slot;
+ struct lto_section_slot s_slot;
+ const char *section_name = lto_get_section_name (section_type, name, file_data);
+ char *data = NULL;
+
+ *len = 0;
+ s_slot.name = section_name;
+ f_slot = (struct lto_section_slot *) htab_find (section_hash_table, &s_slot);
+ if (f_slot)
+ {
+ data = lto_read_section_data (file_data, f_slot->start, f_slot->len);
+ *len = f_slot->len;
+ }
+
+ free (CONST_CAST (char *, section_name));
+ return data;
+}
+
+
+/* Free the section data from FILE_DATA of SECTION_TYPE with NAME that
+ starts at OFFSET and has LEN bytes. */
+
+static void
+free_section_data (struct lto_file_decl_data *file_data ATTRIBUTE_UNUSED,
+ enum lto_section_type section_type ATTRIBUTE_UNUSED,
+ const char *name ATTRIBUTE_UNUSED,
+ const char *offset, size_t len ATTRIBUTE_UNUSED)
+{
+#if LTO_MMAP_IO
+ intptr_t computed_len;
+ intptr_t computed_offset;
+ intptr_t diff;
+#endif
+
+#if LTO_MMAP_IO
+ computed_offset = ((intptr_t) offset) & page_mask;
+ diff = (intptr_t) offset - computed_offset;
+ computed_len = len + diff;
+
+ munmap ((caddr_t) computed_offset, computed_len);
+#else
+ free (CONST_CAST(char *, offset));
+#endif
+}
+
+/* Structure describing ltrans partitions. */
+
+struct GTY (()) ltrans_partition_def
+{
+ cgraph_node_set cgraph_set;
+ varpool_node_set varpool_set;
+ const char * GTY ((skip)) name;
+ int insns;
+};
+
+typedef struct ltrans_partition_def *ltrans_partition;
+DEF_VEC_P(ltrans_partition);
+DEF_VEC_ALLOC_P(ltrans_partition,gc);
+
+static GTY (()) VEC(ltrans_partition, gc) *ltrans_partitions;
+
+static void add_cgraph_node_to_partition (ltrans_partition part, struct cgraph_node *node);
+static void add_varpool_node_to_partition (ltrans_partition part, struct varpool_node *vnode);
+
+/* Create new partition with name NAME. */
+static ltrans_partition
+new_partition (const char *name)
+{
+ ltrans_partition part = ggc_alloc_ltrans_partition_def ();
+ part->cgraph_set = cgraph_node_set_new ();
+ part->varpool_set = varpool_node_set_new ();
+ part->name = name;
+ part->insns = 0;
+ VEC_safe_push (ltrans_partition, gc, ltrans_partitions, part);
+ return part;
+}
+
+/* See all references that go to comdat objects and bring them into partition too. */
+static void
+add_references_to_partition (ltrans_partition part, struct ipa_ref_list *refs)
+{
+ int i;
+ struct ipa_ref *ref;
+ for (i = 0; ipa_ref_list_reference_iterate (refs, i, ref); i++)
+ {
+ if (ref->refered_type == IPA_REF_CGRAPH
+ && DECL_COMDAT (ipa_ref_node (ref)->decl)
+ && !cgraph_node_in_set_p (ipa_ref_node (ref), part->cgraph_set))
+ add_cgraph_node_to_partition (part, ipa_ref_node (ref));
+ else
+ if (ref->refered_type == IPA_REF_VARPOOL
+ && DECL_COMDAT (ipa_ref_varpool_node (ref)->decl)
+ && !varpool_node_in_set_p (ipa_ref_varpool_node (ref), part->varpool_set))
+ add_varpool_node_to_partition (part, ipa_ref_varpool_node (ref));
+ }
+}
+
+/* Add NODE to partition as well as the inline callees and referred comdats into partition PART. */
+
+static void
+add_cgraph_node_to_partition (ltrans_partition part, struct cgraph_node *node)
+{
+ struct cgraph_edge *e;
+
+ part->insns += node->local.inline_summary.self_size;
+
+ if (node->aux)
+ {
+ node->in_other_partition = 1;
+ if (cgraph_dump_file)
+ fprintf (cgraph_dump_file, "Node %s/%i now used in multiple partitions\n",
+ cgraph_node_name (node), node->uid);
+ }
+ node->aux = (void *)((size_t)node->aux + 1);
+
+ cgraph_node_set_add (part->cgraph_set, node);
+
+ for (e = node->callees; e; e = e->next_callee)
+ if ((!e->inline_failed || DECL_COMDAT (e->callee->decl))
+ && !cgraph_node_in_set_p (e->callee, part->cgraph_set))
+ add_cgraph_node_to_partition (part, e->callee);
+
+ add_references_to_partition (part, &node->ref_list);
+
+ if (node->same_comdat_group
+ && !cgraph_node_in_set_p (node->same_comdat_group, part->cgraph_set))
+ add_cgraph_node_to_partition (part, node->same_comdat_group);
+}
+
+/* Add VNODE to partition as well as comdat references partition PART. */
+
+static void
+add_varpool_node_to_partition (ltrans_partition part, struct varpool_node *vnode)
+{
+ varpool_node_set_add (part->varpool_set, vnode);
+
+ if (vnode->aux)
+ {
+ vnode->in_other_partition = 1;
+ if (cgraph_dump_file)
+ fprintf (cgraph_dump_file, "Varpool node %s now used in multiple partitions\n",
+ varpool_node_name (vnode));
+ }
+ vnode->aux = (void *)((size_t)vnode->aux + 1);
+
+ add_references_to_partition (part, &vnode->ref_list);
+
+ if (vnode->same_comdat_group
+ && !varpool_node_in_set_p (vnode->same_comdat_group, part->varpool_set))
+ add_varpool_node_to_partition (part, vnode->same_comdat_group);
+}
+
+/* Undo all additions until number of cgraph nodes in PARITION is N_CGRAPH_NODES
+ and number of varpool nodes is N_VARPOOL_NODES. */
+
+static void
+undo_partition (ltrans_partition partition, unsigned int n_cgraph_nodes,
+ unsigned int n_varpool_nodes)
+{
+ while (VEC_length (cgraph_node_ptr, partition->cgraph_set->nodes) >
+ n_cgraph_nodes)
+ {
+ struct cgraph_node *node = VEC_index (cgraph_node_ptr,
+ partition->cgraph_set->nodes,
+ n_cgraph_nodes);
+ partition->insns -= node->local.inline_summary.self_size;
+ cgraph_node_set_remove (partition->cgraph_set, node);
+ node->aux = (void *)((size_t)node->aux - 1);
+ }
+ while (VEC_length (varpool_node_ptr, partition->varpool_set->nodes) >
+ n_varpool_nodes)
+ {
+ struct varpool_node *node = VEC_index (varpool_node_ptr,
+ partition->varpool_set->nodes,
+ n_varpool_nodes);
+ varpool_node_set_remove (partition->varpool_set, node);
+ node->aux = (void *)((size_t)node->aux - 1);
+ }
+}
+
+/* Return true if NODE should be partitioned.
+ This means that partitioning algorithm should put NODE into one of partitions.
+ This apply to most functions with bodies. Functions that are not partitions
+ are put into every unit needing them. This is the case of i.e. COMDATs. */
+
+static bool
+partition_cgraph_node_p (struct cgraph_node *node)
+{
+ /* We will get proper partition based on function they are inlined to. */
+ if (node->global.inlined_to)
+ return false;
+ /* Nodes without a body do not need partitioning. */
+ if (!node->analyzed)
+ return false;
+ /* Extern inlines and comdat are always only in partitions they are needed. */
+ if (DECL_EXTERNAL (node->decl)
+ || (DECL_COMDAT (node->decl)
+ && !cgraph_used_from_object_file_p (node)))
+ return false;
+ if (lookup_attribute ("weakref", DECL_ATTRIBUTES (node->decl)))
+ return false;
+ return true;
+}
+
+/* Return true if VNODE should be partitioned.
+ This means that partitioning algorithm should put VNODE into one of partitions. */
+
+static bool
+partition_varpool_node_p (struct varpool_node *vnode)
+{
+ if (vnode->alias || !vnode->needed)
+ return false;
+ /* Constant pool and comdat are always only in partitions they are needed. */
+ if (DECL_IN_CONSTANT_POOL (vnode->decl)
+ || (DECL_COMDAT (vnode->decl)
+ && !vnode->force_output
+ && !varpool_used_from_object_file_p (vnode)))
+ return false;
+ if (lookup_attribute ("weakref", DECL_ATTRIBUTES (vnode->decl)))
+ return false;
+ return true;
+}
+
+/* Group cgrah nodes by input files. This is used mainly for testing
+ right now. */
+
+static void
+lto_1_to_1_map (void)
+{
+ struct cgraph_node *node;
+ struct varpool_node *vnode;
+ struct lto_file_decl_data *file_data;
+ struct pointer_map_t *pmap;
+ ltrans_partition partition;
+ void **slot;
+ int npartitions = 0;
+
+ timevar_push (TV_WHOPR_WPA);
+
+ pmap = pointer_map_create ();
+
+ for (node = cgraph_nodes; node; node = node->next)
+ {
+ if (!partition_cgraph_node_p (node)
+ || node->aux)
+ continue;
+
+ file_data = node->local.lto_file_data;
+ gcc_assert (!node->same_body_alias);
+
+ if (file_data)
+ {
+ slot = pointer_map_contains (pmap, file_data);
+ if (slot)
+ partition = (ltrans_partition) *slot;
+ else
+ {
+ partition = new_partition (file_data->file_name);
+ slot = pointer_map_insert (pmap, file_data);
+ *slot = partition;
+ npartitions++;
+ }
+ }
+ else if (!file_data
+ && VEC_length (ltrans_partition, ltrans_partitions))
+ partition = VEC_index (ltrans_partition, ltrans_partitions, 0);
+ else
+ {
+ partition = new_partition ("");
+ slot = pointer_map_insert (pmap, NULL);
+ *slot = partition;
+ npartitions++;
+ }
+
+ add_cgraph_node_to_partition (partition, node);
+ }
+
+ for (vnode = varpool_nodes; vnode; vnode = vnode->next)
+ {
+ if (!partition_varpool_node_p (vnode)
+ || vnode->aux)
+ continue;
+ file_data = vnode->lto_file_data;
+ slot = pointer_map_contains (pmap, file_data);
+ if (slot)
+ partition = (ltrans_partition) *slot;
+ else
+ {
+ partition = new_partition (file_data->file_name);
+ slot = pointer_map_insert (pmap, file_data);
+ *slot = partition;
+ npartitions++;
+ }
+
+ add_varpool_node_to_partition (partition, vnode);
+ }
+ for (node = cgraph_nodes; node; node = node->next)
+ node->aux = NULL;
+ for (vnode = varpool_nodes; vnode; vnode = vnode->next)
+ vnode->aux = NULL;
+
+ /* If the cgraph is empty, create one cgraph node set so that there is still
+ an output file for any variables that need to be exported in a DSO. */
+ if (!npartitions)
+ new_partition ("empty");
+
+ pointer_map_destroy (pmap);
+
+ timevar_pop (TV_WHOPR_WPA);
+
+ lto_stats.num_cgraph_partitions += VEC_length (ltrans_partition,
+ ltrans_partitions);
+}
+
+
+/* Group cgraph nodes in qually sized partitions.
+
+ The algorithm deciding paritions are simple: nodes are taken in predefined
+ order. The order correspond to order we wish to have functions in final
+ output. In future this will be given by function reordering pass, but at
+ the moment we use topological order that serve a good approximation.
+
+ The goal is to partition this linear order into intervals (partitions) such
+ that all partitions have approximately the same size and that the number of
+ callgraph or IPA reference edgess crossing boundaries is minimal.
+
+ This is a lot faster (O(n) in size of callgraph) than algorithms doing
+ priority based graph clustering that are generally O(n^2) and since WHOPR
+ is designed to make things go well across partitions, it leads to good results.
+
+ We compute the expected size of partition as
+ max (total_size / lto_partitions, min_partition_size).
+ We use dynamic expected size of partition, so small programs
+ are partitioning into enough partitions to allow use of multiple CPUs while
+ large programs are not partitioned too much. Creating too many partition
+ increase streaming overhead significandly.
+
+ In the future we would like to bound maximal size of partition to avoid
+ ltrans stage consuming too much memory. At the moment however WPA stage is
+ most memory intensive phase at large benchmark since too many types and
+ declarations are read into memory.
+
+ The function implement simple greedy algorithm. Nodes are begin added into
+ current partition until 3/4th of expected partition size is reached.
+ After this threshold we keep track of boundary size (number of edges going to
+ other partitions) and continue adding functions until the current partition
+ grows into a double of expected partition size. Then the process is undone
+ till the point when minimal ration of boundary size and in partition calls
+ was reached. */
+
+static void
+lto_balanced_map (void)
+{
+ int n_nodes = 0;
+ struct cgraph_node **postorder =
+ XCNEWVEC (struct cgraph_node *, cgraph_n_nodes);
+ struct cgraph_node **order = XNEWVEC (struct cgraph_node *, cgraph_max_uid);
+ int i, postorder_len;
+ struct cgraph_node *node;
+ int total_size = 0, best_total_size = 0;
+ int partition_size;
+ ltrans_partition partition;
+ unsigned int last_visited_cgraph_node = 0, last_visited_varpool_node = 0;
+ struct varpool_node *vnode;
+ int cost = 0, internal = 0;
+ int best_n_nodes = 0, best_n_varpool_nodes = 0, best_i = 0, best_cost =
+ INT_MAX, best_internal = 0;
+ int npartitions;
+
+ for (vnode = varpool_nodes; vnode; vnode = vnode->next)
+ gcc_assert (!vnode->aux);
+ /* Until we have better ordering facility, use toplogical order.
+ Include only nodes we will partition and compute estimate of program
+ size. Note that since nodes that are not partitioned might be put into
+ multiple partitions, this is just an estimate of real size. This is why
+ we keep partition_size updated after every partition is finalized. */
+ postorder_len = cgraph_postorder (postorder);
+ for (i = 0; i < postorder_len; i++)
+ {
+ node = postorder[i];
+ if (partition_cgraph_node_p (node))
+ {
+ order[n_nodes++] = node;
+ total_size += node->global.size;
+ }
+ }
+ free (postorder);
+
+ /* Compute partition size and create the first partition. */
+ partition_size = total_size / PARAM_VALUE (PARAM_LTO_PARTITIONS);
+ if (partition_size < PARAM_VALUE (MIN_PARTITION_SIZE))
+ partition_size = PARAM_VALUE (MIN_PARTITION_SIZE);
+ npartitions = 1;
+ partition = new_partition ("");
+ if (cgraph_dump_file)
+ fprintf (cgraph_dump_file, "Total unit size: %i, partition size: %i\n",
+ total_size, partition_size);
+
+ for (i = 0; i < n_nodes; i++)
+ {
+ if (order[i]->aux)
+ continue;
+ add_cgraph_node_to_partition (partition, order[i]);
+ total_size -= order[i]->global.size;
+
+ /* Once we added a new node to the partition, we also want to add
+ all referenced variables unless they was already added into some
+ earlier partition.
+ add_cgraph_node_to_partition adds possibly multiple nodes and
+ variables that are needed to satisfy needs of ORDER[i].
+ We remember last visited cgraph and varpool node from last iteration
+ of outer loop that allows us to process every new addition.
+
+ At the same time we compute size of the boundary into COST. Every
+ callgraph or IPA reference edge leaving the partition contributes into
+ COST. Every edge inside partition was earlier computed as one leaving
+ it and thus we need to subtract it from COST. */
+ while (last_visited_cgraph_node <
+ VEC_length (cgraph_node_ptr, partition->cgraph_set->nodes)
+ || last_visited_varpool_node < VEC_length (varpool_node_ptr,
+ partition->varpool_set->
+ nodes))
+ {
+ struct ipa_ref_list *refs;
+ int j;
+ struct ipa_ref *ref;
+ bool cgraph_p = false;
+
+ if (last_visited_cgraph_node <
+ VEC_length (cgraph_node_ptr, partition->cgraph_set->nodes))
+ {
+ struct cgraph_edge *edge;
+
+ cgraph_p = true;
+ node = VEC_index (cgraph_node_ptr, partition->cgraph_set->nodes,
+ last_visited_cgraph_node);
+ refs = &node->ref_list;
+
+ last_visited_cgraph_node++;
+
+ gcc_assert (node->analyzed);
+
+ /* Compute boundary cost of callgrpah edges. */
+ for (edge = node->callees; edge; edge = edge->next_callee)
+ if (edge->callee->analyzed)
+ {
+ int edge_cost = edge->frequency;
+ cgraph_node_set_iterator csi;
+
+ if (!edge_cost)
+ edge_cost = 1;
+ gcc_assert (edge_cost > 0);
+ csi = cgraph_node_set_find (partition->cgraph_set, edge->callee);
+ if (!csi_end_p (csi)
+ && csi.index < last_visited_cgraph_node - 1)
+ cost -= edge_cost, internal+= edge_cost;
+ else
+ cost += edge_cost;
+ }
+ for (edge = node->callers; edge; edge = edge->next_caller)
+ {
+ int edge_cost = edge->frequency;
+ cgraph_node_set_iterator csi;
+
+ gcc_assert (edge->caller->analyzed);
+ if (!edge_cost)
+ edge_cost = 1;
+ gcc_assert (edge_cost > 0);
+ csi = cgraph_node_set_find (partition->cgraph_set, edge->caller);
+ if (!csi_end_p (csi)
+ && csi.index < last_visited_cgraph_node)
+ cost -= edge_cost;
+ else
+ cost += edge_cost;
+ }
+ }
+ else
+ {
+ refs =
+ &VEC_index (varpool_node_ptr, partition->varpool_set->nodes,
+ last_visited_varpool_node)->ref_list;
+ last_visited_varpool_node++;
+ }
+
+ /* Compute boundary cost of IPA REF edges and at the same time look into
+ variables referenced from current partition and try to add them. */
+ for (j = 0; ipa_ref_list_reference_iterate (refs, j, ref); j++)
+ if (ref->refered_type == IPA_REF_VARPOOL)
+ {
+ varpool_node_set_iterator vsi;
+
+ vnode = ipa_ref_varpool_node (ref);
+ if (!vnode->finalized)
+ continue;
+ if (!vnode->aux && partition_varpool_node_p (vnode))
+ add_varpool_node_to_partition (partition, vnode);
+ vsi = varpool_node_set_find (partition->varpool_set, vnode);
+ if (!vsi_end_p (vsi)
+ && vsi.index < last_visited_varpool_node - !cgraph_p)
+ cost--, internal++;
+ else
+ cost++;
+ }
+ else
+ {
+ cgraph_node_set_iterator csi;
+
+ node = ipa_ref_node (ref);
+ if (!node->analyzed)
+ continue;
+ csi = cgraph_node_set_find (partition->cgraph_set, node);
+ if (!csi_end_p (csi)
+ && csi.index < last_visited_cgraph_node - cgraph_p)
+ cost--, internal++;
+ else
+ cost++;
+ }
+ for (j = 0; ipa_ref_list_refering_iterate (refs, j, ref); j++)
+ if (ref->refering_type == IPA_REF_VARPOOL)
+ {
+ varpool_node_set_iterator vsi;
+
+ vnode = ipa_ref_refering_varpool_node (ref);
+ gcc_assert (vnode->finalized);
+ if (!vnode->aux && partition_varpool_node_p (vnode))
+ add_varpool_node_to_partition (partition, vnode);
+ vsi = varpool_node_set_find (partition->varpool_set, vnode);
+ if (!vsi_end_p (vsi)
+ && vsi.index < last_visited_varpool_node)
+ cost--;
+ else
+ cost++;
+ }
+ else
+ {
+ cgraph_node_set_iterator csi;
+
+ node = ipa_ref_refering_node (ref);
+ gcc_assert (node->analyzed);
+ csi = cgraph_node_set_find (partition->cgraph_set, node);
+ if (!csi_end_p (csi)
+ && csi.index < last_visited_cgraph_node)
+ cost--;
+ else
+ cost++;
+ }
+ }
+
+ /* If the partition is large enough, start looking for smallest boundary cost. */
+ if (partition->insns < partition_size * 3 / 4
+ || best_cost == INT_MAX
+ || ((!cost
+ || (best_internal * (HOST_WIDE_INT) cost
+ > (internal * (HOST_WIDE_INT)best_cost)))
+ && partition->insns < partition_size * 5 / 4))
+ {
+ best_cost = cost;
+ best_internal = internal;
+ best_i = i;
+ best_n_nodes = VEC_length (cgraph_node_ptr,
+ partition->cgraph_set->nodes);
+ best_n_varpool_nodes = VEC_length (varpool_node_ptr,
+ partition->varpool_set->nodes);
+ best_total_size = total_size;
+ }
+ if (cgraph_dump_file)
+ fprintf (cgraph_dump_file, "Step %i: added %s/%i, size %i, cost %i/%i best %i/%i, step %i\n", i,
+ cgraph_node_name (order[i]), order[i]->uid, partition->insns, cost, internal,
+ best_cost, best_internal, best_i);
+ /* Partition is too large, unwind into step when best cost was reached and
+ start new partition. */
+ if (partition->insns > 2 * partition_size)
+ {
+ if (best_i != i)
+ {
+ if (cgraph_dump_file)
+ fprintf (cgraph_dump_file, "Unwinding %i insertions to step %i\n",
+ i - best_i, best_i);
+ undo_partition (partition, best_n_nodes, best_n_varpool_nodes);
+ }
+ i = best_i;
+ /* When we are finished, avoid creating empty partition. */
+ while (i < n_nodes - 1 && order[i + 1]->aux)
+ i++;
+ if (i == n_nodes - 1)
+ break;
+ partition = new_partition ("");
+ last_visited_cgraph_node = 0;
+ last_visited_varpool_node = 0;
+ total_size = best_total_size;
+ cost = 0;
+
+ if (cgraph_dump_file)
+ fprintf (cgraph_dump_file, "New partition\n");
+ best_n_nodes = 0;
+ best_n_varpool_nodes = 0;
+ best_cost = INT_MAX;
+
+ /* Since the size of partitions is just approximate, update the size after
+ we finished current one. */
+ if (npartitions < PARAM_VALUE (PARAM_LTO_PARTITIONS))
+ partition_size = total_size
+ / (PARAM_VALUE (PARAM_LTO_PARTITIONS) - npartitions);
+ else
+ partition_size = INT_MAX;
+
+ if (partition_size < PARAM_VALUE (MIN_PARTITION_SIZE))
+ partition_size = PARAM_VALUE (MIN_PARTITION_SIZE);
+ npartitions ++;
+ }
+ }
+
+ /* Varables that are not reachable from the code go into last partition. */
+ for (vnode = varpool_nodes; vnode; vnode = vnode->next)
+ if (partition_varpool_node_p (vnode) && !vnode->aux)
+ add_varpool_node_to_partition (partition, vnode);
+ free (order);
+}
+
+/* Promote variable VNODE to be static. */
+
+static bool
+promote_var (struct varpool_node *vnode)
+{
+ if (TREE_PUBLIC (vnode->decl) || DECL_EXTERNAL (vnode->decl))
+ return false;
+ gcc_assert (flag_wpa);
+ TREE_PUBLIC (vnode->decl) = 1;
+ DECL_VISIBILITY (vnode->decl) = VISIBILITY_HIDDEN;
+ DECL_VISIBILITY_SPECIFIED (vnode->decl) = true;
+ if (cgraph_dump_file)
+ fprintf (cgraph_dump_file,
+ "Promoting var as hidden: %s\n", varpool_node_name (vnode));
+ return true;
+}
+
+/* Promote function NODE to be static. */
+
+static bool
+promote_fn (struct cgraph_node *node)
+{
+ gcc_assert (flag_wpa);
+ if (TREE_PUBLIC (node->decl) || DECL_EXTERNAL (node->decl))
+ return false;
+ TREE_PUBLIC (node->decl) = 1;
+ DECL_VISIBILITY (node->decl) = VISIBILITY_HIDDEN;
+ DECL_VISIBILITY_SPECIFIED (node->decl) = true;
+ if (node->same_body)
+ {
+ struct cgraph_node *alias;
+ for (alias = node->same_body;
+ alias; alias = alias->next)
+ {
+ TREE_PUBLIC (alias->decl) = 1;
+ DECL_VISIBILITY (alias->decl) = VISIBILITY_HIDDEN;
+ DECL_VISIBILITY_SPECIFIED (alias->decl) = true;
+ }
+ }
+ if (cgraph_dump_file)
+ fprintf (cgraph_dump_file,
+ "Promoting function as hidden: %s/%i\n",
+ cgraph_node_name (node), node->uid);
+ return true;
+}
+
+/* Find out all static decls that need to be promoted to global because
+ of cross file sharing. This function must be run in the WPA mode after
+ all inlinees are added. */
+
+static void
+lto_promote_cross_file_statics (void)
+{
+ struct varpool_node *vnode;
+ unsigned i, n_sets;
+ cgraph_node_set set;
+ varpool_node_set vset;
+ cgraph_node_set_iterator csi;
+ varpool_node_set_iterator vsi;
+ VEC(varpool_node_ptr, heap) *promoted_initializers = NULL;
+ struct pointer_set_t *inserted = pointer_set_create ();
+
+ gcc_assert (flag_wpa);
+
+ n_sets = VEC_length (ltrans_partition, ltrans_partitions);
+ for (i = 0; i < n_sets; i++)
+ {
+ ltrans_partition part = VEC_index (ltrans_partition, ltrans_partitions, i);
+ set = part->cgraph_set;
+ vset = part->varpool_set;
+
+ /* If node has either address taken (and we have no clue from where)
+ or it is called from other partition, it needs to be globalized. */
+ for (csi = csi_start (set); !csi_end_p (csi); csi_next (&csi))
+ {
+ struct cgraph_node *node = csi_node (csi);
+ if (node->local.externally_visible)
+ continue;
+ if (node->global.inlined_to)
+ continue;
+ if ((!DECL_EXTERNAL (node->decl) && !DECL_COMDAT (node->decl))
+ && (referenced_from_other_partition_p (&node->ref_list, set, vset)
+ || reachable_from_other_partition_p (node, set)))
+ promote_fn (node);
+ }
+ for (vsi = vsi_start (vset); !vsi_end_p (vsi); vsi_next (&vsi))
+ {
+ vnode = vsi_node (vsi);
+ /* Constant pool references use internal labels and thus can not
+ be made global. It is sensible to keep those ltrans local to
+ allow better optimization. */
+ if (!DECL_IN_CONSTANT_POOL (vnode->decl) && !DECL_COMDAT (vnode->decl)
+ && !vnode->externally_visible && vnode->analyzed
+ && referenced_from_other_partition_p (&vnode->ref_list,
+ set, vset))
+ promote_var (vnode);
+ }
+
+ /* We export initializers of read-only var into each partition
+ referencing it. Folding might take declarations from the
+ initializers and use it; so everything referenced from the
+ initializers needs can be accessed from this partition after
+ folding.
+
+ This means that we need to promote all variables and functions
+ referenced from all initializers from readonly vars referenced
+ from this partition that are not in this partition.
+ This needs to be done recursively. */
+ for (vnode = varpool_nodes; vnode; vnode = vnode->next)
+ if (const_value_known_p (vnode->decl)
+ && DECL_INITIAL (vnode->decl)
+ && !varpool_node_in_set_p (vnode, vset)
+ && referenced_from_this_partition_p (&vnode->ref_list, set, vset)
+ && !pointer_set_insert (inserted, vnode))
+ VEC_safe_push (varpool_node_ptr, heap, promoted_initializers, vnode);
+ while (!VEC_empty (varpool_node_ptr, promoted_initializers))
+ {
+ int i;
+ struct ipa_ref *ref;
+
+ vnode = VEC_pop (varpool_node_ptr, promoted_initializers);
+ for (i = 0; ipa_ref_list_reference_iterate (&vnode->ref_list, i, ref); i++)
+ {
+ if (ref->refered_type == IPA_REF_CGRAPH)
+ {
+ struct cgraph_node *n = ipa_ref_node (ref);
+ gcc_assert (!n->global.inlined_to);
+ if (!n->local.externally_visible
+ && !cgraph_node_in_set_p (n, set))
+ promote_fn (n);
+ }
+ else
+ {
+ struct varpool_node *v = ipa_ref_varpool_node (ref);
+ if (varpool_node_in_set_p (v, vset))
+ continue;
+ /* Constant pool references use internal labels and thus can not
+ be made global. It is sensible to keep those ltrans local to
+ allow better optimization. */
+ if (DECL_IN_CONSTANT_POOL (v->decl))
+ {
+ if (!pointer_set_insert (inserted, vnode))
+ VEC_safe_push (varpool_node_ptr, heap,
+ promoted_initializers, v);
+ }
+ else if (!DECL_IN_CONSTANT_POOL (v->decl)
+ && !v->externally_visible && v->analyzed)
+ {
+ if (promote_var (v)
+ && DECL_INITIAL (v->decl)
+ && const_value_known_p (v->decl)
+ && !pointer_set_insert (inserted, vnode))
+ VEC_safe_push (varpool_node_ptr, heap,
+ promoted_initializers, v);
+ }
+ }
+ }
+ }
+ }
+ pointer_set_destroy (inserted);
+}
+
+static lto_file *current_lto_file;
+
+/* Helper for qsort; compare partitions and return one with smaller size.
+ We sort from greatest to smallest so parallel build doesn't stale on the
+ longest compilation being executed too late. */
+
+static int
+cmp_partitions (const void *a, const void *b)
+{
+ const struct ltrans_partition_def *pa
+ = *(struct ltrans_partition_def *const *)a;
+ const struct ltrans_partition_def *pb
+ = *(struct ltrans_partition_def *const *)b;
+ return pb->insns - pa->insns;
+}
+
+/* Write all output files in WPA mode and the file with the list of
+ LTRANS units. */
+
+static void
+lto_wpa_write_files (void)
+{
+ unsigned i, n_sets;
+ lto_file *file;
+ cgraph_node_set set;
+ varpool_node_set vset;
+ ltrans_partition part;
+ FILE *ltrans_output_list_stream;
+ char *temp_filename;
+ size_t blen;
+
+ /* Open the LTRANS output list. */
+ if (!ltrans_output_list)
+ fatal_error ("no LTRANS output list filename provided");
+ ltrans_output_list_stream = fopen (ltrans_output_list, "w");
+ if (ltrans_output_list_stream == NULL)
+ fatal_error ("opening LTRANS output list %s: %m", ltrans_output_list);
+
+ timevar_push (TV_WHOPR_WPA);
+
+ FOR_EACH_VEC_ELT (ltrans_partition, ltrans_partitions, i, part)
+ lto_stats.num_output_cgraph_nodes += VEC_length (cgraph_node_ptr,
+ part->cgraph_set->nodes);
+
+ /* Find out statics that need to be promoted
+ to globals with hidden visibility because they are accessed from multiple
+ partitions. */
+ lto_promote_cross_file_statics ();
+
+ timevar_pop (TV_WHOPR_WPA);
+
+ timevar_push (TV_WHOPR_WPA_IO);
+
+ /* Generate a prefix for the LTRANS unit files. */
+ blen = strlen (ltrans_output_list);
+ temp_filename = (char *) xmalloc (blen + sizeof ("2147483648.o"));
+ strcpy (temp_filename, ltrans_output_list);
+ if (blen > sizeof (".out")
+ && strcmp (temp_filename + blen - sizeof (".out") + 1,
+ ".out") == 0)
+ temp_filename[blen - sizeof (".out") + 1] = '\0';
+ blen = strlen (temp_filename);
+
+ n_sets = VEC_length (ltrans_partition, ltrans_partitions);
+ VEC_qsort (ltrans_partition, ltrans_partitions, cmp_partitions);
+ for (i = 0; i < n_sets; i++)
+ {
+ size_t len;
+ ltrans_partition part = VEC_index (ltrans_partition, ltrans_partitions, i);
+
+ set = part->cgraph_set;
+ vset = part->varpool_set;
+
+ /* Write all the nodes in SET. */
+ sprintf (temp_filename + blen, "%u.o", i);
+ file = lto_obj_file_open (temp_filename, true);
+ if (!file)
+ fatal_error ("lto_obj_file_open() failed");
+
+ if (!quiet_flag)
+ fprintf (stderr, " %s (%s %i insns)", temp_filename, part->name, part->insns);
+ if (cgraph_dump_file)
+ {
+ fprintf (cgraph_dump_file, "Writting partition %s to file %s, %i insns\n",
+ part->name, temp_filename, part->insns);
+ fprintf (cgraph_dump_file, "cgraph nodes:");
+ dump_cgraph_node_set (cgraph_dump_file, set);
+ fprintf (cgraph_dump_file, "varpool nodes:");
+ dump_varpool_node_set (cgraph_dump_file, vset);
+ }
+ gcc_checking_assert (cgraph_node_set_nonempty_p (set)
+ || varpool_node_set_nonempty_p (vset) || !i);
+
+ lto_set_current_out_file (file);
+
+ ipa_write_optimization_summaries (set, vset);
+
+ lto_set_current_out_file (NULL);
+ lto_obj_file_close (file);
+
+ len = strlen (temp_filename);
+ if (fwrite (temp_filename, 1, len, ltrans_output_list_stream) < len
+ || fwrite ("\n", 1, 1, ltrans_output_list_stream) < 1)
+ fatal_error ("writing to LTRANS output list %s: %m",
+ ltrans_output_list);
+ }
+
+ lto_stats.num_output_files += n_sets;
+
+ /* Close the LTRANS output list. */
+ if (fclose (ltrans_output_list_stream))
+ fatal_error ("closing LTRANS output list %s: %m", ltrans_output_list);
+
+ timevar_pop (TV_WHOPR_WPA_IO);
+}
+
+
+typedef struct {
+ struct pointer_set_t *seen;
+} lto_fixup_data_t;
+
+#define LTO_FIXUP_SUBTREE(t) \
+ do \
+ walk_tree (&(t), lto_fixup_tree, data, NULL); \
+ while (0)
+
+#define LTO_REGISTER_TYPE_AND_FIXUP_SUBTREE(t) \
+ do \
+ { \
+ if (t) \
+ (t) = gimple_register_type (t); \
+ walk_tree (&(t), lto_fixup_tree, data, NULL); \
+ } \
+ while (0)
+
+static tree lto_fixup_tree (tree *, int *, void *);
+
+/* Return true if T does not need to be fixed up recursively. */
+
+static inline bool
+no_fixup_p (tree t)
+{
+ return (t == NULL
+ || CONSTANT_CLASS_P (t)
+ || TREE_CODE (t) == IDENTIFIER_NODE);
+}
+
+/* Fix up fields of a tree_common T. DATA points to fix-up states. */
+
+static void
+lto_fixup_common (tree t, void *data)
+{
+ /* The following re-creates the TYPE_REFERENCE_TO and TYPE_POINTER_TO
+ lists. We do not stream TYPE_REFERENCE_TO, TYPE_POINTER_TO or
+ TYPE_NEXT_PTR_TO and TYPE_NEXT_REF_TO.
+ First remove us from any pointer list we are on. */
+ if (TREE_CODE (t) == POINTER_TYPE)
+ {
+ if (TYPE_POINTER_TO (TREE_TYPE (t)) == t)
+ TYPE_POINTER_TO (TREE_TYPE (t)) = TYPE_NEXT_PTR_TO (t);
+ else
+ {
+ tree tem = TYPE_POINTER_TO (TREE_TYPE (t));
+ while (tem && TYPE_NEXT_PTR_TO (tem) != t)
+ tem = TYPE_NEXT_PTR_TO (tem);
+ if (tem)
+ TYPE_NEXT_PTR_TO (tem) = TYPE_NEXT_PTR_TO (t);
+ }
+ TYPE_NEXT_PTR_TO (t) = NULL_TREE;
+ }
+ else if (TREE_CODE (t) == REFERENCE_TYPE)
+ {
+ if (TYPE_REFERENCE_TO (TREE_TYPE (t)) == t)
+ TYPE_REFERENCE_TO (TREE_TYPE (t)) = TYPE_NEXT_REF_TO (t);
+ else
+ {
+ tree tem = TYPE_REFERENCE_TO (TREE_TYPE (t));
+ while (tem && TYPE_NEXT_REF_TO (tem) != t)
+ tem = TYPE_NEXT_REF_TO (tem);
+ if (tem)
+ TYPE_NEXT_REF_TO (tem) = TYPE_NEXT_REF_TO (t);
+ }
+ TYPE_NEXT_REF_TO (t) = NULL_TREE;
+ }
+
+ /* Fixup our type. */
+ LTO_REGISTER_TYPE_AND_FIXUP_SUBTREE (TREE_TYPE (t));
+
+ /* Second put us on the list of pointers of the new pointed-to type
+ if we are a main variant. This is done in lto_fixup_type after
+ fixing up our main variant. */
+
+ /* This is not very efficient because we cannot do tail-recursion with
+ a long chain of trees. */
+ LTO_FIXUP_SUBTREE (TREE_CHAIN (t));
+}
+
+/* Fix up fields of a decl_minimal T. DATA points to fix-up states. */
+
+static void
+lto_fixup_decl_minimal (tree t, void *data)
+{
+ lto_fixup_common (t, data);
+ LTO_FIXUP_SUBTREE (DECL_NAME (t));
+ LTO_FIXUP_SUBTREE (DECL_CONTEXT (t));
+}
+
+/* Fix up fields of a decl_common T. DATA points to fix-up states. */
+
+static void
+lto_fixup_decl_common (tree t, void *data)
+{
+ lto_fixup_decl_minimal (t, data);
+ LTO_FIXUP_SUBTREE (DECL_SIZE (t));
+ LTO_FIXUP_SUBTREE (DECL_SIZE_UNIT (t));
+ LTO_FIXUP_SUBTREE (DECL_INITIAL (t));
+ LTO_FIXUP_SUBTREE (DECL_ATTRIBUTES (t));
+ LTO_FIXUP_SUBTREE (DECL_ABSTRACT_ORIGIN (t));
+}
+
+/* Fix up fields of a decl_with_vis T. DATA points to fix-up states. */
+
+static void
+lto_fixup_decl_with_vis (tree t, void *data)
+{
+ lto_fixup_decl_common (t, data);
+
+ /* Accessor macro has side-effects, use field-name here. */
+ LTO_FIXUP_SUBTREE (t->decl_with_vis.assembler_name);
+
+ gcc_assert (no_fixup_p (DECL_SECTION_NAME (t)));
+}
+
+/* Fix up fields of a decl_non_common T. DATA points to fix-up states. */
+
+static void
+lto_fixup_decl_non_common (tree t, void *data)
+{
+ lto_fixup_decl_with_vis (t, data);
+ LTO_FIXUP_SUBTREE (DECL_ARGUMENT_FLD (t));
+ LTO_FIXUP_SUBTREE (DECL_RESULT_FLD (t));
+ LTO_FIXUP_SUBTREE (DECL_VINDEX (t));
+
+ /* SAVED_TREE should not cleared by now. Also no accessor for base type. */
+ gcc_assert (no_fixup_p (t->decl_non_common.saved_tree));
+}
+
+/* Fix up fields of a decl_non_common T. DATA points to fix-up states. */
+
+static void
+lto_fixup_function (tree t, void *data)
+{
+ lto_fixup_decl_non_common (t, data);
+ LTO_FIXUP_SUBTREE (DECL_FUNCTION_PERSONALITY (t));
+}
+
+/* Fix up fields of a field_decl T. DATA points to fix-up states. */
+
+static void
+lto_fixup_field_decl (tree t, void *data)
+{
+ lto_fixup_decl_common (t, data);
+ LTO_FIXUP_SUBTREE (DECL_FIELD_OFFSET (t));
+ LTO_FIXUP_SUBTREE (DECL_BIT_FIELD_TYPE (t));
+ LTO_FIXUP_SUBTREE (DECL_QUALIFIER (t));
+ gcc_assert (no_fixup_p (DECL_FIELD_BIT_OFFSET (t)));
+ LTO_FIXUP_SUBTREE (DECL_FCONTEXT (t));
+}
+
+/* Fix up fields of a type T. DATA points to fix-up states. */
+
+static void
+lto_fixup_type (tree t, void *data)
+{
+ tree tem, mv;
+
+ lto_fixup_common (t, data);
+ LTO_FIXUP_SUBTREE (TYPE_CACHED_VALUES (t));
+ LTO_FIXUP_SUBTREE (TYPE_SIZE (t));
+ LTO_FIXUP_SUBTREE (TYPE_SIZE_UNIT (t));
+ LTO_FIXUP_SUBTREE (TYPE_ATTRIBUTES (t));
+ LTO_FIXUP_SUBTREE (TYPE_NAME (t));
+
+ /* Accessors are for derived node types only. */
+ if (!POINTER_TYPE_P (t))
+ LTO_FIXUP_SUBTREE (t->type.minval);
+ LTO_FIXUP_SUBTREE (t->type.maxval);
+
+ /* Accessor is for derived node types only. */
+ LTO_FIXUP_SUBTREE (t->type.binfo);
+
+ if (TYPE_CONTEXT (t))
+ {
+ if (TYPE_P (TYPE_CONTEXT (t)))
+ LTO_REGISTER_TYPE_AND_FIXUP_SUBTREE (TYPE_CONTEXT (t));
+ else
+ LTO_FIXUP_SUBTREE (TYPE_CONTEXT (t));
+ }
+
+ /* Compute the canonical type of t and fix that up. From this point
+ there are no longer any types with TYPE_STRUCTURAL_EQUALITY_P
+ and its type-based alias problems. */
+ if (!TYPE_CANONICAL (t))
+ {
+ TYPE_CANONICAL (t) = gimple_register_canonical_type (t);
+ LTO_FIXUP_SUBTREE (TYPE_CANONICAL (t));
+ }
+
+ /* The following re-creates proper variant lists while fixing up
+ the variant leaders. We do not stream TYPE_NEXT_VARIANT so the
+ variant list state before fixup is broken. */
+
+ /* Remove us from our main variant list if we are not the variant leader. */
+ if (TYPE_MAIN_VARIANT (t) != t)
+ {
+ tem = TYPE_MAIN_VARIANT (t);
+ while (tem && TYPE_NEXT_VARIANT (tem) != t)
+ tem = TYPE_NEXT_VARIANT (tem);
+ if (tem)
+ TYPE_NEXT_VARIANT (tem) = TYPE_NEXT_VARIANT (t);
+ TYPE_NEXT_VARIANT (t) = NULL_TREE;
+ }
+
+ /* Query our new main variant. */
+ mv = gimple_register_type (TYPE_MAIN_VARIANT (t));
+
+ /* If we were the variant leader and we get replaced ourselves drop
+ all variants from our list. */
+ if (TYPE_MAIN_VARIANT (t) == t
+ && mv != t)
+ {
+ tem = t;
+ while (tem)
+ {
+ tree tem2 = TYPE_NEXT_VARIANT (tem);
+ TYPE_NEXT_VARIANT (tem) = NULL_TREE;
+ tem = tem2;
+ }
+ }
+
+ /* If we are not our own variant leader link us into our new leaders
+ variant list. */
+ if (mv != t)
+ {
+ TYPE_NEXT_VARIANT (t) = TYPE_NEXT_VARIANT (mv);
+ TYPE_NEXT_VARIANT (mv) = t;
+ }
+
+ /* Finally adjust our main variant and fix it up. */
+ TYPE_MAIN_VARIANT (t) = mv;
+ LTO_FIXUP_SUBTREE (TYPE_MAIN_VARIANT (t));
+
+ /* As the second step of reconstructing the pointer chains put us
+ on the list of pointers of the new pointed-to type
+ if we are a main variant. See lto_fixup_common for the first step. */
+ if (TREE_CODE (t) == POINTER_TYPE
+ && TYPE_MAIN_VARIANT (t) == t)
+ {
+ TYPE_NEXT_PTR_TO (t) = TYPE_POINTER_TO (TREE_TYPE (t));
+ TYPE_POINTER_TO (TREE_TYPE (t)) = t;
+ }
+ else if (TREE_CODE (t) == REFERENCE_TYPE
+ && TYPE_MAIN_VARIANT (t) == t)
+ {
+ TYPE_NEXT_REF_TO (t) = TYPE_REFERENCE_TO (TREE_TYPE (t));
+ TYPE_REFERENCE_TO (TREE_TYPE (t)) = t;
+ }
+}
+
+/* Fix up fields of a BINFO T. DATA points to fix-up states. */
+
+static void
+lto_fixup_binfo (tree t, void *data)
+{
+ unsigned HOST_WIDE_INT i, n;
+ tree base, saved_base;
+
+ lto_fixup_common (t, data);
+ gcc_assert (no_fixup_p (BINFO_OFFSET (t)));
+ LTO_FIXUP_SUBTREE (BINFO_VTABLE (t));
+ LTO_FIXUP_SUBTREE (BINFO_VIRTUALS (t));
+ LTO_FIXUP_SUBTREE (BINFO_VPTR_FIELD (t));
+ n = VEC_length (tree, BINFO_BASE_ACCESSES (t));
+ for (i = 0; i < n; i++)
+ {
+ saved_base = base = BINFO_BASE_ACCESS (t, i);
+ LTO_FIXUP_SUBTREE (base);
+ if (base != saved_base)
+ VEC_replace (tree, BINFO_BASE_ACCESSES (t), i, base);
+ }
+ LTO_FIXUP_SUBTREE (BINFO_INHERITANCE_CHAIN (t));
+ LTO_FIXUP_SUBTREE (BINFO_SUBVTT_INDEX (t));
+ LTO_FIXUP_SUBTREE (BINFO_VPTR_INDEX (t));
+ n = BINFO_N_BASE_BINFOS (t);
+ for (i = 0; i < n; i++)
+ {
+ saved_base = base = BINFO_BASE_BINFO (t, i);
+ LTO_FIXUP_SUBTREE (base);
+ if (base != saved_base)
+ VEC_replace (tree, BINFO_BASE_BINFOS (t), i, base);
+ }
+}
+
+/* Fix up fields of a CONSTRUCTOR T. DATA points to fix-up states. */
+
+static void
+lto_fixup_constructor (tree t, void *data)
+{
+ unsigned HOST_WIDE_INT idx;
+ constructor_elt *ce;
+
+ LTO_REGISTER_TYPE_AND_FIXUP_SUBTREE (TREE_TYPE (t));
+
+ for (idx = 0;
+ VEC_iterate(constructor_elt, CONSTRUCTOR_ELTS (t), idx, ce);
+ idx++)
+ {
+ LTO_FIXUP_SUBTREE (ce->index);
+ LTO_FIXUP_SUBTREE (ce->value);
+ }
+}
+
+/* A walk_tree callback used by lto_fixup_state. TP is the pointer to the
+ current tree. WALK_SUBTREES indicates if the subtrees will be walked.
+ DATA is a pointer set to record visited nodes. */
+
+static tree
+lto_fixup_tree (tree *tp, int *walk_subtrees, void *data)
+{
+ tree t;
+ lto_fixup_data_t *fixup_data = (lto_fixup_data_t *) data;
+ tree prevailing;
+
+ t = *tp;
+ *walk_subtrees = 0;
+ if (!t || pointer_set_contains (fixup_data->seen, t))
+ return NULL;
+
+ if (TREE_CODE (t) == VAR_DECL || TREE_CODE (t) == FUNCTION_DECL)
+ {
+ prevailing = lto_symtab_prevailing_decl (t);
+
+ if (t != prevailing)
+ {
+ /* Also replace t with prevailing defintion. We don't want to
+ insert the other defintion in the seen set as we want to
+ replace all instances of it. */
+ *tp = prevailing;
+ t = prevailing;
+ }
+ }
+ else if (TYPE_P (t))
+ {
+ /* Replace t with the prevailing type. We don't want to insert the
+ other type in the seen set as we want to replace all instances of it. */
+ t = gimple_register_type (t);
+ *tp = t;
+ }
+
+ if (pointer_set_insert (fixup_data->seen, t))
+ return NULL;
+
+ /* walk_tree does not visit all reachable nodes that need to be fixed up.
+ Hence we do special processing here for those kind of nodes. */
+ switch (TREE_CODE (t))
+ {
+ case FIELD_DECL:
+ lto_fixup_field_decl (t, data);
+ break;
+
+ case LABEL_DECL:
+ case CONST_DECL:
+ case PARM_DECL:
+ case RESULT_DECL:
+ case IMPORTED_DECL:
+ lto_fixup_decl_common (t, data);
+ break;
+
+ case VAR_DECL:
+ lto_fixup_decl_with_vis (t, data);
+ break;
+
+ case TYPE_DECL:
+ lto_fixup_decl_non_common (t, data);
+ break;
+
+ case FUNCTION_DECL:
+ lto_fixup_function (t, data);
+ break;
+
+ case TREE_BINFO:
+ lto_fixup_binfo (t, data);
+ break;
+
+ default:
+ if (TYPE_P (t))
+ lto_fixup_type (t, data);
+ else if (TREE_CODE (t) == CONSTRUCTOR)
+ lto_fixup_constructor (t, data);
+ else if (CONSTANT_CLASS_P (t))
+ LTO_REGISTER_TYPE_AND_FIXUP_SUBTREE (TREE_TYPE (t));
+ else if (EXPR_P (t))
+ {
+ /* walk_tree only handles TREE_OPERANDs. Do the rest here. */
+ lto_fixup_common (t, data);
+ LTO_FIXUP_SUBTREE (t->exp.block);
+ *walk_subtrees = 1;
+ }
+ else
+ {
+ /* Let walk_tree handle sub-trees. */
+ *walk_subtrees = 1;
+ }
+ }
+
+ return NULL;
+}
+
+/* Helper function of lto_fixup_decls. Walks the var and fn streams in STATE,
+ replaces var and function decls with the corresponding prevailing def and
+ records the old decl in the free-list in DATA. We also record visted nodes
+ in the seen-set in DATA to avoid multiple visit for nodes that need not
+ to be replaced. */
+
+static void
+lto_fixup_state (struct lto_in_decl_state *state, lto_fixup_data_t *data)
+{
+ unsigned i, si;
+ struct lto_tree_ref_table *table;
+
+ /* Although we only want to replace FUNCTION_DECLs and VAR_DECLs,
+ we still need to walk from all DECLs to find the reachable
+ FUNCTION_DECLs and VAR_DECLs. */
+ for (si = 0; si < LTO_N_DECL_STREAMS; si++)
+ {
+ table = &state->streams[si];
+ for (i = 0; i < table->size; i++)
+ walk_tree (table->trees + i, lto_fixup_tree, data, NULL);
+ }
+}
+
+/* A callback of htab_traverse. Just extract a state from SLOT and the
+ lto_fixup_data_t object from AUX and calls lto_fixup_state. */
+
+static int
+lto_fixup_state_aux (void **slot, void *aux)
+{
+ struct lto_in_decl_state *state = (struct lto_in_decl_state *) *slot;
+ lto_fixup_state (state, (lto_fixup_data_t *) aux);
+ return 1;
+}
+
+/* Fix the decls from all FILES. Replaces each decl with the corresponding
+ prevailing one. */
+
+static void
+lto_fixup_decls (struct lto_file_decl_data **files)
+{
+ unsigned int i;
+ tree decl;
+ struct pointer_set_t *seen = pointer_set_create ();
+ lto_fixup_data_t data;
+
+ data.seen = seen;
+ for (i = 0; files[i]; i++)
+ {
+ struct lto_file_decl_data *file = files[i];
+ struct lto_in_decl_state *state = file->global_decl_state;
+ lto_fixup_state (state, &data);
+
+ htab_traverse (file->function_decl_states, lto_fixup_state_aux, &data);
+ }
+
+ FOR_EACH_VEC_ELT (tree, lto_global_var_decls, i, decl)
+ {
+ tree saved_decl = decl;
+ walk_tree (&decl, lto_fixup_tree, &data, NULL);
+ if (decl != saved_decl)
+ VEC_replace (tree, lto_global_var_decls, i, decl);
+ }
+
+ pointer_set_destroy (seen);
+}
+
+/* Read the options saved from each file in the command line. Called
+ from lang_hooks.post_options which is called by process_options
+ right before all the options are used to initialize the compiler.
+ This assumes that decode_options has already run, so the
+ num_in_fnames and in_fnames are properly set.
+
+ Note that this assumes that all the files had been compiled with
+ the same options, which is not a good assumption. In general,
+ options ought to be read from all the files in the set and merged.
+ However, it is still unclear what the merge rules should be. */
+
+void
+lto_read_all_file_options (void)
+{
+ size_t i;
+
+ /* Clear any file options currently saved. */
+ lto_clear_file_options ();
+
+ /* Set the hooks to read ELF sections. */
+ lto_set_in_hooks (NULL, get_section_data, free_section_data);
+ if (!quiet_flag)
+ fprintf (stderr, "Reading command line options:");
+
+ for (i = 0; i < num_in_fnames; i++)
+ {
+ struct lto_file_decl_data *file_data;
+ lto_file *file = lto_obj_file_open (in_fnames[i], false);
+ if (!file)
+ break;
+ if (!quiet_flag)
+ {
+ fprintf (stderr, " %s", in_fnames[i]);
+ fflush (stderr);
+ }
+
+ file_data = XCNEW (struct lto_file_decl_data);
+ file_data->file_name = file->filename;
+ file_data->section_hash_table = lto_obj_build_section_table (file);
+
+ lto_read_file_options (file_data);
+
+ lto_obj_file_close (file);
+ htab_delete (file_data->section_hash_table);
+ free (file_data);
+ }
+
+ if (!quiet_flag)
+ fprintf (stderr, "\n");
+
+ /* Apply globally the options read from all the files. */
+ lto_reissue_options ();
+}
+
+static GTY((length ("lto_stats.num_input_files + 1"))) struct lto_file_decl_data **all_file_decl_data;
+
+/* Turn file datas for sub files into a single array, so that they look
+ like separate files for further passes. */
+
+static void
+lto_flatten_files (struct lto_file_decl_data **orig, int count, int last_file_ix)
+{
+ struct lto_file_decl_data *n, *next;
+ int i, k;
+
+ lto_stats.num_input_files = count;
+ all_file_decl_data
+ = ggc_alloc_cleared_vec_lto_file_decl_data_ptr (count + 1);
+ /* Set the hooks so that all of the ipa passes can read in their data. */
+ lto_set_in_hooks (all_file_decl_data, get_section_data, free_section_data);
+ for (i = 0, k = 0; i < last_file_ix; i++)
+ {
+ for (n = orig[i]; n != NULL; n = next)
+ {
+ all_file_decl_data[k++] = n;
+ next = n->next;
+ n->next = NULL;
+ }
+ }
+ all_file_decl_data[k] = NULL;
+ gcc_assert (k == count);
+}
+
+/* Input file data before flattening (i.e. splitting them to subfiles to support
+ incremental linking. */
+static int real_file_count;
+static GTY((length ("real_file_count + 1"))) struct lto_file_decl_data **real_file_decl_data;
+
+/* Read all the symbols from the input files FNAMES. NFILES is the
+ number of files requested in the command line. Instantiate a
+ global call graph by aggregating all the sub-graphs found in each
+ file. */
+
+static void
+read_cgraph_and_symbols (unsigned nfiles, const char **fnames)
+{
+ unsigned int i, last_file_ix;
+ FILE *resolution;
+ struct cgraph_node *node;
+ int count = 0;
+ struct lto_file_decl_data **decl_data;
+
+ init_cgraph ();
+
+ timevar_push (TV_IPA_LTO_DECL_IN);
+
+ real_file_decl_data
+ = decl_data = ggc_alloc_cleared_vec_lto_file_decl_data_ptr (nfiles + 1);
+ real_file_count = nfiles;
+
+ /* Read the resolution file. */
+ resolution = NULL;
+ if (resolution_file_name)
+ {
+ int t;
+ unsigned num_objects;
+
+ resolution = fopen (resolution_file_name, "r");
+ if (resolution == NULL)
+ fatal_error ("could not open symbol resolution file: %m");
+
+ t = fscanf (resolution, "%u", &num_objects);
+ gcc_assert (t == 1);
+
+ /* True, since the plugin splits the archives. */
+ gcc_assert (num_objects == nfiles);
+ }
+
+ if (!quiet_flag)
+ fprintf (stderr, "Reading object files:");
+
+ /* Read all of the object files specified on the command line. */
+ for (i = 0, last_file_ix = 0; i < nfiles; ++i)
+ {
+ struct lto_file_decl_data *file_data = NULL;
+ if (!quiet_flag)
+ {
+ fprintf (stderr, " %s", fnames[i]);
+ fflush (stderr);
+ }
+
+ current_lto_file = lto_obj_file_open (fnames[i], false);
+ if (!current_lto_file)
+ break;
+
+ file_data = lto_file_read (current_lto_file, resolution, &count);
+ if (!file_data)
+ {
+ lto_obj_file_close (current_lto_file);
+ current_lto_file = NULL;
+ break;
+ }
+
+ decl_data[last_file_ix++] = file_data;
+
+ lto_obj_file_close (current_lto_file);
+ current_lto_file = NULL;
+ ggc_collect ();
+ }
+
+ lto_flatten_files (decl_data, count, last_file_ix);
+ lto_stats.num_input_files = count;
+ ggc_free(decl_data);
+ real_file_decl_data = NULL;
+
+ if (resolution_file_name)
+ fclose (resolution);
+
+ /* Set the hooks so that all of the ipa passes can read in their data. */
+ lto_set_in_hooks (all_file_decl_data, get_section_data, free_section_data);
+
+ timevar_pop (TV_IPA_LTO_DECL_IN);
+
+ if (!quiet_flag)
+ fprintf (stderr, "\nReading the callgraph\n");
+
+ timevar_push (TV_IPA_LTO_CGRAPH_IO);
+ /* Read the callgraph. */
+ input_cgraph ();
+ timevar_pop (TV_IPA_LTO_CGRAPH_IO);
+
+ if (!quiet_flag)
+ fprintf (stderr, "Merging declarations\n");
+
+ timevar_push (TV_IPA_LTO_DECL_MERGE);
+ /* Merge global decls. */
+ lto_symtab_merge_decls ();
+
+ /* If there were errors during symbol merging bail out, we have no
+ good way to recover here. */
+ if (seen_error ())
+ fatal_error ("errors during merging of translation units");
+
+ /* Fixup all decls and types and free the type hash tables. */
+ lto_fixup_decls (all_file_decl_data);
+ free_gimple_type_tables ();
+ ggc_collect ();
+
+ timevar_pop (TV_IPA_LTO_DECL_MERGE);
+ /* Each pass will set the appropriate timer. */
+
+ if (!quiet_flag)
+ fprintf (stderr, "Reading summaries\n");
+
+ /* Read the IPA summary data. */
+ if (flag_ltrans)
+ ipa_read_optimization_summaries ();
+ else
+ ipa_read_summaries ();
+
+ /* Finally merge the cgraph according to the decl merging decisions. */
+ timevar_push (TV_IPA_LTO_CGRAPH_MERGE);
+ if (cgraph_dump_file)
+ {
+ fprintf (cgraph_dump_file, "Before merging:\n");
+ dump_cgraph (cgraph_dump_file);
+ dump_varpool (cgraph_dump_file);
+ }
+ lto_symtab_merge_cgraph_nodes ();
+ ggc_collect ();
+
+ if (flag_ltrans)
+ for (node = cgraph_nodes; node; node = node->next)
+ {
+ /* FIXME: ipa_transforms_to_apply holds list of passes that have optimization
+ summaries computed and needs to apply changes. At the moment WHOPR only
+ supports inlining, so we can push it here by hand. In future we need to stream
+ this field into ltrans compilation. */
+ if (node->analyzed)
+ VEC_safe_push (ipa_opt_pass, heap,
+ node->ipa_transforms_to_apply,
+ (ipa_opt_pass)&pass_ipa_inline);
+ }
+ lto_symtab_free ();
+
+ timevar_pop (TV_IPA_LTO_CGRAPH_MERGE);
+
+ timevar_push (TV_IPA_LTO_DECL_INIT_IO);
+
+ /* FIXME lto. This loop needs to be changed to use the pass manager to
+ call the ipa passes directly. */
+ if (!seen_error ())
+ for (i = 0; i < last_file_ix; i++)
+ {
+ struct lto_file_decl_data *file_data = all_file_decl_data [i];
+ lto_materialize_constructors_and_inits (file_data);
+ }
+
+ /* Indicate that the cgraph is built and ready. */
+ cgraph_function_flags_ready = true;
+
+ timevar_pop (TV_IPA_LTO_DECL_INIT_IO);
+ ggc_free (all_file_decl_data);
+ all_file_decl_data = NULL;
+}
+
+
+/* Materialize all the bodies for all the nodes in the callgraph. */
+
+static void
+materialize_cgraph (void)
+{
+ tree decl;
+ struct cgraph_node *node;
+ unsigned i;
+ timevar_id_t lto_timer;
+
+ if (!quiet_flag)
+ fprintf (stderr,
+ flag_wpa ? "Materializing decls:" : "Reading function bodies:");
+
+
+ /* Now that we have input the cgraph, we need to clear all of the aux
+ nodes and read the functions if we are not running in WPA mode. */
+ timevar_push (TV_IPA_LTO_GIMPLE_IN);
+
+ for (node = cgraph_nodes; node; node = node->next)
+ {
+ if (node->local.lto_file_data)
+ {
+ lto_materialize_function (node);
+ lto_stats.num_input_cgraph_nodes++;
+ }
+ }
+
+ timevar_pop (TV_IPA_LTO_GIMPLE_IN);
+
+ /* Start the appropriate timer depending on the mode that we are
+ operating in. */
+ lto_timer = (flag_wpa) ? TV_WHOPR_WPA
+ : (flag_ltrans) ? TV_WHOPR_LTRANS
+ : TV_LTO;
+ timevar_push (lto_timer);
+
+ current_function_decl = NULL;
+ set_cfun (NULL);
+
+ /* Inform the middle end about the global variables we have seen. */
+ FOR_EACH_VEC_ELT (tree, lto_global_var_decls, i, decl)
+ rest_of_decl_compilation (decl, 1, 0);
+
+ if (!quiet_flag)
+ fprintf (stderr, "\n");
+
+ timevar_pop (lto_timer);
+}
+
+
+/* Perform whole program analysis (WPA) on the callgraph and write out the
+ optimization plan. */
+
+static void
+do_whole_program_analysis (void)
+{
+ /* Note that since we are in WPA mode, materialize_cgraph will not
+ actually read in all the function bodies. It only materializes
+ the decls and cgraph nodes so that analysis can be performed. */
+ materialize_cgraph ();
+
+ /* Reading in the cgraph uses different timers, start timing WPA now. */
+ timevar_push (TV_WHOPR_WPA);
+
+ if (pre_ipa_mem_report)
+ {
+ fprintf (stderr, "Memory consumption before IPA\n");
+ dump_memory_report (false);
+ }
+
+ cgraph_function_flags_ready = true;
+
+ if (cgraph_dump_file)
+ {
+ dump_cgraph (cgraph_dump_file);
+ dump_varpool (cgraph_dump_file);
+ }
+ bitmap_obstack_initialize (NULL);
+ ipa_register_cgraph_hooks ();
+ cgraph_state = CGRAPH_STATE_IPA_SSA;
+
+ execute_ipa_pass_list (all_regular_ipa_passes);
+
+ if (cgraph_dump_file)
+ {
+ fprintf (cgraph_dump_file, "Optimized ");
+ dump_cgraph (cgraph_dump_file);
+ dump_varpool (cgraph_dump_file);
+ }
+ verify_cgraph ();
+ bitmap_obstack_release (NULL);
+
+ /* We are about to launch the final LTRANS phase, stop the WPA timer. */
+ timevar_pop (TV_WHOPR_WPA);
+
+ if (flag_lto_partition_1to1)
+ lto_1_to_1_map ();
+ else
+ lto_balanced_map ();
+
+ if (!quiet_flag)
+ {
+ fprintf (stderr, "\nStreaming out");
+ fflush (stderr);
+ }
+ lto_wpa_write_files ();
+ ggc_collect ();
+ if (!quiet_flag)
+ fprintf (stderr, "\n");
+
+ if (post_ipa_mem_report)
+ {
+ fprintf (stderr, "Memory consumption after IPA\n");
+ dump_memory_report (false);
+ }
+
+ /* Show the LTO report before launching LTRANS. */
+ if (flag_lto_report)
+ print_lto_report ();
+}
+
+
+static GTY(()) tree lto_eh_personality_decl;
+
+/* Return the LTO personality function decl. */
+
+tree
+lto_eh_personality (void)
+{
+ if (!lto_eh_personality_decl)
+ {
+ /* Use the first personality DECL for our personality if we don't
+ support multiple ones. This ensures that we don't artificially
+ create the need for them in a single-language program. */
+ if (first_personality_decl && !dwarf2out_do_cfi_asm ())
+ lto_eh_personality_decl = first_personality_decl;
+ else
+ lto_eh_personality_decl = lhd_gcc_personality ();
+ }
+
+ return lto_eh_personality_decl;
+}
+
+/* Set the process name based on the LTO mode. */
+
+static void
+lto_process_name (void)
+{
+ if (flag_lto)
+ setproctitle ("lto1-lto");
+ if (flag_wpa)
+ setproctitle ("lto1-wpa");
+ if (flag_ltrans)
+ setproctitle ("lto1-ltrans");
+}
+
+/* Main entry point for the GIMPLE front end. This front end has
+ three main personalities:
+
+ - LTO (-flto). All the object files on the command line are
+ loaded in memory and processed as a single translation unit.
+ This is the traditional link-time optimization behavior.
+
+ - WPA (-fwpa). Only the callgraph and summary information for
+ files in the command file are loaded. A single callgraph
+ (without function bodies) is instantiated for the whole set of
+ files. IPA passes are only allowed to analyze the call graph
+ and make transformation decisions. The callgraph is
+ partitioned, each partition is written to a new object file
+ together with the transformation decisions.
+
+ - LTRANS (-fltrans). Similar to -flto but it prevents the IPA
+ summary files from running again. Since WPA computed summary
+ information and decided what transformations to apply, LTRANS
+ simply applies them. */
+
+void
+lto_main (void)
+{
+ lto_process_name ();
+
+ lto_init_reader ();
+
+ /* Read all the symbols and call graph from all the files in the
+ command line. */
+ read_cgraph_and_symbols (num_in_fnames, in_fnames);
+
+ if (!seen_error ())
+ {
+ /* If WPA is enabled analyze the whole call graph and create an
+ optimization plan. Otherwise, read in all the function
+ bodies and continue with optimization. */
+ if (flag_wpa)
+ do_whole_program_analysis ();
+ else
+ {
+ materialize_cgraph ();
+
+ /* Let the middle end know that we have read and merged all of
+ the input files. */
+ cgraph_optimize ();
+
+ /* FIXME lto, if the processes spawned by WPA fail, we miss
+ the chance to print WPA's report, so WPA will call
+ print_lto_report before launching LTRANS. If LTRANS was
+ launched directly by the driver we would not need to do
+ this. */
+ if (flag_lto_report)
+ print_lto_report ();
+ }
+ }
+}
+
+#include "gt-lto-lto.h"
diff --git a/gcc/lto/lto.h b/gcc/lto/lto.h
new file mode 100644
index 000000000..e7236b6cb
--- /dev/null
+++ b/gcc/lto/lto.h
@@ -0,0 +1,63 @@
+/* LTO declarations.
+ Copyright 2009, 2010 Free Software Foundation, Inc.
+ Contributed by CodeSourcery, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef LTO_H
+#define LTO_H
+
+#include "hashtab.h"
+
+/* A file. */
+typedef struct lto_file_struct
+{
+ /* The name of the file. */
+ const char *filename;
+ /* The offset for the object inside an ar archive file (or zero). */
+ off_t offset;
+} lto_file;
+
+/* In lto-lang.c */
+extern const char *resolution_file_name;
+
+/* In lto.c */
+extern tree lto_eh_personality (void);
+extern void lto_main (void);
+extern void lto_read_all_file_options (void);
+
+/* In lto-elf.c or lto-coff.c */
+extern lto_file *lto_obj_file_open (const char *filename, bool writable);
+extern void lto_obj_file_close (lto_file *file);
+extern htab_t lto_obj_build_section_table (lto_file *file);
+extern htab_t lto_obj_create_section_hash_table (void);
+extern void lto_obj_begin_section (const char *name);
+extern void lto_obj_append_data (const void *data, size_t len, void *block);
+extern void lto_obj_end_section (void);
+extern lto_file *lto_set_current_out_file (lto_file *file);
+extern lto_file *lto_get_current_out_file (void);
+
+/* Hash table entry to hold the start offset and length of an LTO
+ section in a .o file. */
+struct lto_section_slot
+{
+ const char *name;
+ intptr_t start;
+ size_t len;
+};
+
+#endif /* LTO_H */