From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/cgraph.h | 964 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 964 insertions(+) create mode 100644 gcc/cgraph.h (limited to 'gcc/cgraph.h') diff --git a/gcc/cgraph.h b/gcc/cgraph.h new file mode 100644 index 000000000..bad1bb987 --- /dev/null +++ b/gcc/cgraph.h @@ -0,0 +1,964 @@ +/* Callgraph handling code. + Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 + Free Software Foundation, Inc. + Contributed by Jan Hubicka + +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 +. */ + +#ifndef GCC_CGRAPH_H +#define GCC_CGRAPH_H + +#include "plugin-api.h" +#include "vec.h" +#include "tree.h" +#include "basic-block.h" +#include "function.h" +#include "ipa-ref.h" /* FIXME: inappropriate dependency of cgraph on IPA. */ + +enum availability +{ + /* Not yet set by cgraph_function_body_availability. */ + AVAIL_UNSET, + /* Function body/variable initializer is unknown. */ + AVAIL_NOT_AVAILABLE, + /* Function body/variable initializer is known but might be replaced + by a different one from other compilation unit and thus needs to + be dealt with a care. Like AVAIL_NOT_AVAILABLE it can have + arbitrary side effects on escaping variables and functions, while + like AVAILABLE it might access static variables. */ + AVAIL_OVERWRITABLE, + /* Function body/variable initializer is known and will be used in final + program. */ + AVAIL_AVAILABLE, + /* Function body/variable initializer is known and all it's uses are explicitly + visible within current unit (ie it's address is never taken and it is not + exported to other units). + Currently used only for functions. */ + AVAIL_LOCAL +}; + +/* This is the information that is put into the cgraph local structure + to recover a function. */ +struct lto_file_decl_data; + +extern const char * const cgraph_availability_names[]; +extern const char * const ld_plugin_symbol_resolution_names[]; + +/* Function inlining information. */ + +struct GTY(()) inline_summary +{ + /* Estimated stack frame consumption by the function. */ + HOST_WIDE_INT estimated_self_stack_size; + + /* Size of the function body. */ + int self_size; + /* How many instructions are likely going to disappear after inlining. */ + int size_inlining_benefit; + /* Estimated time spent executing the function body. */ + int self_time; + /* How much time is going to be saved by inlining. */ + int time_inlining_benefit; +}; + +/* Information about thunk, used only for same body aliases. */ + +struct GTY(()) cgraph_thunk_info { + /* Information about the thunk. */ + HOST_WIDE_INT fixed_offset; + HOST_WIDE_INT virtual_value; + tree alias; + bool this_adjusting; + bool virtual_offset_p; + /* Set to true when alias node is thunk. */ + bool thunk_p; +}; + +/* Information about the function collected locally. + Available after function is analyzed. */ + +struct GTY(()) cgraph_local_info { + /* File stream where this node is being written to. */ + struct lto_file_decl_data * lto_file_data; + + struct inline_summary inline_summary; + + /* Set when function function is visible in current compilation unit only + and its address is never taken. */ + unsigned local : 1; + + /* Set when function is visible by other units. */ + unsigned externally_visible : 1; + + /* Set once it has been finalized so we consider it to be output. */ + unsigned finalized : 1; + + /* False when there something makes inlining impossible (such as va_arg). */ + unsigned inlinable : 1; + + /* False when there something makes versioning impossible. + Currently computed and used only by ipa-cp. */ + unsigned versionable : 1; + + /* False when function calling convention and signature can not be changed. + This is the case when __builtin_apply_args is used. */ + unsigned can_change_signature : 1; + + /* True when function should be inlined independently on its size. */ + unsigned disregard_inline_limits : 1; + + /* True when the function has been originally extern inline, but it is + redefined now. */ + unsigned redefined_extern_inline : 1; + + /* True if the function is going to be emitted in some other translation + unit, referenced from vtable. */ + unsigned vtable_method : 1; +}; + +/* Information about the function that needs to be computed globally + once compilation is finished. Available only with -funit-at-a-time. */ + +struct GTY(()) cgraph_global_info { + /* Estimated stack frame consumption by the function. */ + HOST_WIDE_INT estimated_stack_size; + /* Expected offset of the stack frame of inlined function. */ + HOST_WIDE_INT stack_frame_offset; + + /* For inline clones this points to the function they will be + inlined into. */ + struct cgraph_node *inlined_to; + + /* Estimated size of the function after inlining. */ + int time; + int size; + + /* Estimated growth after inlining. INT_MIN if not computed. */ + int estimated_growth; +}; + +/* Information about the function that is propagated by the RTL backend. + Available only for functions that has been already assembled. */ + +struct GTY(()) cgraph_rtl_info { + unsigned int preferred_incoming_stack_boundary; +}; + +/* Represent which DECL tree (or reference to such tree) + will be replaced by another tree while versioning. */ +struct GTY(()) ipa_replace_map +{ + /* The tree that will be replaced. */ + tree old_tree; + /* The new (replacing) tree. */ + tree new_tree; + /* Parameter number to replace, when old_tree is NULL. */ + int parm_num; + /* True when a substitution should be done, false otherwise. */ + bool replace_p; + /* True when we replace a reference to old_tree. */ + bool ref_p; +}; +typedef struct ipa_replace_map *ipa_replace_map_p; +DEF_VEC_P(ipa_replace_map_p); +DEF_VEC_ALLOC_P(ipa_replace_map_p,gc); + +struct GTY(()) cgraph_clone_info +{ + VEC(ipa_replace_map_p,gc)* tree_map; + bitmap args_to_skip; + bitmap combined_args_to_skip; +}; + + +/* The cgraph data structure. + Each function decl has assigned cgraph_node listing callees and callers. */ + +struct GTY((chain_next ("%h.next"), chain_prev ("%h.previous"))) cgraph_node { + tree decl; + struct cgraph_edge *callees; + struct cgraph_edge *callers; + struct cgraph_node *next; + struct cgraph_node *previous; + /* List of edges representing indirect calls with a yet undetermined + callee. */ + struct cgraph_edge *indirect_calls; + /* For nested functions points to function the node is nested in. */ + struct cgraph_node *origin; + /* Points to first nested function, if any. */ + struct cgraph_node *nested; + /* Pointer to the next function with same origin, if any. */ + struct cgraph_node *next_nested; + /* Pointer to the next function in cgraph_nodes_queue. */ + struct cgraph_node *next_needed; + /* Pointer to the next clone. */ + struct cgraph_node *next_sibling_clone; + struct cgraph_node *prev_sibling_clone; + struct cgraph_node *clones; + struct cgraph_node *clone_of; + /* For normal nodes pointer to the list of alias and thunk nodes, + in alias/thunk nodes pointer to the normal node. */ + struct cgraph_node *same_body; + /* Circular list of nodes in the same comdat group if non-NULL. */ + struct cgraph_node *same_comdat_group; + /* For functions with many calls sites it holds map from call expression + to the edge to speed up cgraph_edge function. */ + htab_t GTY((param_is (struct cgraph_edge))) call_site_hash; + /* Declaration node used to be clone of. */ + tree former_clone_of; + + PTR GTY ((skip)) aux; + + /* Interprocedural passes scheduled to have their transform functions + applied next time we execute local pass on them. We maintain it + per-function in order to allow IPA passes to introduce new functions. */ + VEC(ipa_opt_pass,heap) * GTY((skip)) ipa_transforms_to_apply; + + struct ipa_ref_list ref_list; + struct cgraph_local_info local; + struct cgraph_global_info global; + struct cgraph_rtl_info rtl; + struct cgraph_clone_info clone; + struct cgraph_thunk_info thunk; + + /* Expected number of executions: calculated in profile.c. */ + gcov_type count; + /* How to scale counts at materialization time; used to merge + LTO units with different number of profile runs. */ + int count_materialization_scale; + /* Unique id of the node. */ + int uid; + /* Ordering of all cgraph nodes. */ + int order; + + /* unique id for profiling. pid is not suitable because of different + number of cfg nodes with -fprofile-generate and -fprofile-use */ + int pid; + enum ld_plugin_symbol_resolution resolution; + + /* Set when function must be output for some reason. The primary + use of this flag is to mark functions needed to be output for + non-standard reason. Functions that are externally visible + or reachable from functions needed to be output are marked + by specialized flags. */ + unsigned needed : 1; + /* Set when function has address taken. + In current implementation it imply needed flag. */ + unsigned address_taken : 1; + /* Set when decl is an abstract function pointed to by the + ABSTRACT_DECL_ORIGIN of a reachable function. */ + unsigned abstract_and_needed : 1; + /* Set when function is reachable by call from other function + that is either reachable or needed. + This flag is computed at original cgraph construction and then + updated in cgraph_remove_unreachable_nodes. Note that after + cgraph_remove_unreachable_nodes cgraph still can contain unreachable + nodes when they are needed for virtual clone instantiation. */ + unsigned reachable : 1; + /* Set when function is reachable by call from other LTRANS partition. */ + unsigned reachable_from_other_partition : 1; + /* Set once the function is lowered (i.e. its CFG is built). */ + unsigned lowered : 1; + /* Set once the function has been instantiated and its callee + lists created. */ + unsigned analyzed : 1; + /* Set when function is available in the other LTRANS partition. + During WPA output it is used to mark nodes that are present in + multiple partitions. */ + unsigned in_other_partition : 1; + /* Set when function is scheduled to be processed by local passes. */ + unsigned process : 1; + /* Set for aliases once they got through assemble_alias. */ + unsigned alias : 1; + /* Set for nodes that was constructed and finalized by frontend. */ + unsigned finalized_by_frontend : 1; + /* Set for alias and thunk nodes, same_body points to the node they are alias + of and they are linked through the next/previous pointers. */ + unsigned same_body_alias : 1; + /* How commonly executed the node is. Initialized during branch + probabilities pass. */ + ENUM_BITFIELD (node_frequency) frequency : 2; + /* True when function can only be called at startup (from static ctor). */ + unsigned only_called_at_startup : 1; + /* True when function can only be called at startup (from static dtor). */ + unsigned only_called_at_exit : 1; +}; + +typedef struct cgraph_node *cgraph_node_ptr; + +DEF_VEC_P(cgraph_node_ptr); +DEF_VEC_ALLOC_P(cgraph_node_ptr,heap); +DEF_VEC_ALLOC_P(cgraph_node_ptr,gc); + +/* A cgraph node set is a collection of cgraph nodes. A cgraph node + can appear in multiple sets. */ +struct GTY(()) cgraph_node_set_def +{ + htab_t GTY((param_is (struct cgraph_node_set_element_def))) hashtab; + VEC(cgraph_node_ptr, gc) *nodes; +}; + +typedef struct varpool_node *varpool_node_ptr; + +DEF_VEC_P(varpool_node_ptr); +DEF_VEC_ALLOC_P(varpool_node_ptr,heap); +DEF_VEC_ALLOC_P(varpool_node_ptr,gc); + +/* A varpool node set is a collection of varpool nodes. A varpool node + can appear in multiple sets. */ +struct GTY(()) varpool_node_set_def +{ + htab_t GTY((param_is (struct varpool_node_set_element_def))) hashtab; + VEC(varpool_node_ptr, gc) *nodes; +}; + +typedef struct cgraph_node_set_def *cgraph_node_set; + +DEF_VEC_P(cgraph_node_set); +DEF_VEC_ALLOC_P(cgraph_node_set,gc); +DEF_VEC_ALLOC_P(cgraph_node_set,heap); + +typedef struct varpool_node_set_def *varpool_node_set; + +DEF_VEC_P(varpool_node_set); +DEF_VEC_ALLOC_P(varpool_node_set,gc); +DEF_VEC_ALLOC_P(varpool_node_set,heap); + +/* A cgraph node set element contains an index in the vector of nodes in + the set. */ +struct GTY(()) cgraph_node_set_element_def +{ + struct cgraph_node *node; + HOST_WIDE_INT index; +}; + +typedef struct cgraph_node_set_element_def *cgraph_node_set_element; +typedef const struct cgraph_node_set_element_def *const_cgraph_node_set_element; + +/* Iterator structure for cgraph node sets. */ +typedef struct +{ + cgraph_node_set set; + unsigned index; +} cgraph_node_set_iterator; + +/* A varpool node set element contains an index in the vector of nodes in + the set. */ +struct GTY(()) varpool_node_set_element_def +{ + struct varpool_node *node; + HOST_WIDE_INT index; +}; + +typedef struct varpool_node_set_element_def *varpool_node_set_element; +typedef const struct varpool_node_set_element_def *const_varpool_node_set_element; + +/* Iterator structure for varpool node sets. */ +typedef struct +{ + varpool_node_set set; + unsigned index; +} varpool_node_set_iterator; + +#define DEFCIFCODE(code, string) CIF_ ## code, +/* Reasons for inlining failures. */ +typedef enum { +#include "cif-code.def" + CIF_N_REASONS +} cgraph_inline_failed_t; + +/* Structure containing additional information about an indirect call. */ + +struct GTY(()) cgraph_indirect_call_info +{ + /* Offset accumulated from ancestor jump functions of inlined call graph + edges. */ + HOST_WIDE_INT anc_offset; + /* OBJ_TYPE_REF_TOKEN of a polymorphic call (if polymorphic is set). */ + HOST_WIDE_INT otr_token; + /* Delta by which must be added to this parameter to compensate for a skipped + this adjusting thunk. */ + HOST_WIDE_INT thunk_delta; + /* Type of the object from OBJ_TYPE_REF_OBJECT. */ + tree otr_type; + /* Index of the parameter that is called. */ + int param_index; + /* ECF flags determined from the caller. */ + int ecf_flags; + + /* Set when the call is a virtual call with the parameter being the + associated object pointer rather than a simple direct call. */ + unsigned polymorphic : 1; +}; + +struct GTY((chain_next ("%h.next_caller"), chain_prev ("%h.prev_caller"))) cgraph_edge { + /* Expected number of executions: calculated in profile.c. */ + gcov_type count; + struct cgraph_node *caller; + struct cgraph_node *callee; + struct cgraph_edge *prev_caller; + struct cgraph_edge *next_caller; + struct cgraph_edge *prev_callee; + struct cgraph_edge *next_callee; + gimple call_stmt; + /* Additional information about an indirect call. Not cleared when an edge + becomes direct. */ + struct cgraph_indirect_call_info *indirect_info; + PTR GTY ((skip (""))) aux; + /* When equal to CIF_OK, inline this call. Otherwise, points to the + explanation why function was not inlined. */ + cgraph_inline_failed_t inline_failed; + /* The stmt_uid of call_stmt. This is used by LTO to recover the call_stmt + when the function is serialized in. */ + unsigned int lto_stmt_uid; + /* Expected frequency of executions within the function. + When set to CGRAPH_FREQ_BASE, the edge is expected to be called once + per function call. The range is 0 to CGRAPH_FREQ_MAX. */ + int frequency; + /* Unique id of the edge. */ + int uid; + /* Depth of loop nest, 1 means no loop nest. */ + unsigned short int loop_nest; + /* Whether this edge was made direct by indirect inlining. */ + unsigned int indirect_inlining_edge : 1; + /* Whether this edge describes an indirect call with an undetermined + callee. */ + unsigned int indirect_unknown_callee : 1; + /* Whether this edge is still a dangling */ + /* True if the corresponding CALL stmt cannot be inlined. */ + unsigned int call_stmt_cannot_inline_p : 1; + /* Can this call throw externally? */ + unsigned int can_throw_external : 1; +}; + +#define CGRAPH_FREQ_BASE 1000 +#define CGRAPH_FREQ_MAX 100000 + +typedef struct cgraph_edge *cgraph_edge_p; + +DEF_VEC_P(cgraph_edge_p); +DEF_VEC_ALLOC_P(cgraph_edge_p,heap); + +/* The varpool data structure. + Each static variable decl has assigned varpool_node. */ + +struct GTY((chain_next ("%h.next"), chain_prev ("%h.prev"))) varpool_node { + tree decl; + /* Pointer to the next function in varpool_nodes. */ + struct varpool_node *next, *prev; + /* Pointer to the next function in varpool_nodes_queue. */ + struct varpool_node *next_needed, *prev_needed; + /* For normal nodes a pointer to the first extra name alias. For alias + nodes a pointer to the normal node. */ + struct varpool_node *extra_name; + /* Circular list of nodes in the same comdat group if non-NULL. */ + struct varpool_node *same_comdat_group; + struct ipa_ref_list ref_list; + /* File stream where this node is being written to. */ + struct lto_file_decl_data * lto_file_data; + PTR GTY ((skip)) aux; + /* Ordering of all cgraph nodes. */ + int order; + enum ld_plugin_symbol_resolution resolution; + + /* Set when function must be output - it is externally visible + or its address is taken. */ + unsigned needed : 1; + /* Needed variables might become dead by optimization. This flag + forces the variable to be output even if it appears dead otherwise. */ + unsigned force_output : 1; + /* Set once the variable has been instantiated and its callee + lists created. */ + unsigned analyzed : 1; + /* Set once it has been finalized so we consider it to be output. */ + unsigned finalized : 1; + /* Set when variable is scheduled to be assembled. */ + unsigned output : 1; + /* Set when function is visible by other units. */ + unsigned externally_visible : 1; + /* Set for aliases once they got through assemble_alias. Also set for + extra name aliases in varpool_extra_name_alias. */ + unsigned alias : 1; + /* Set when variable is used from other LTRANS partition. */ + unsigned used_from_other_partition : 1; + /* Set when variable is available in the other LTRANS partition. + During WPA output it is used to mark nodes that are present in + multiple partitions. */ + unsigned in_other_partition : 1; +}; + +/* Every top level asm statement is put into a cgraph_asm_node. */ + +struct GTY(()) cgraph_asm_node { + /* Next asm node. */ + struct cgraph_asm_node *next; + /* String for this asm node. */ + tree asm_str; + /* Ordering of all cgraph nodes. */ + int order; +}; + +extern GTY(()) struct cgraph_node *cgraph_nodes; +extern GTY(()) int cgraph_n_nodes; +extern GTY(()) int cgraph_max_uid; +extern GTY(()) int cgraph_edge_max_uid; +extern GTY(()) int cgraph_max_pid; +extern bool cgraph_global_info_ready; +enum cgraph_state +{ + /* Callgraph is being constructed. It is safe to add new functions. */ + CGRAPH_STATE_CONSTRUCTION, + /* Callgraph is built and IPA passes are being run. */ + CGRAPH_STATE_IPA, + /* Callgraph is built and all functions are transformed to SSA form. */ + CGRAPH_STATE_IPA_SSA, + /* Functions are now ordered and being passed to RTL expanders. */ + CGRAPH_STATE_EXPANSION, + /* All cgraph expansion is done. */ + CGRAPH_STATE_FINISHED +}; +extern enum cgraph_state cgraph_state; +extern bool cgraph_function_flags_ready; +extern GTY(()) struct cgraph_node *cgraph_nodes_queue; +extern GTY(()) struct cgraph_node *cgraph_new_nodes; + +extern GTY(()) struct cgraph_asm_node *cgraph_asm_nodes; +extern GTY(()) int cgraph_order; + +/* In cgraph.c */ +void dump_cgraph (FILE *); +void debug_cgraph (void); +void dump_cgraph_node (FILE *, struct cgraph_node *); +void debug_cgraph_node (struct cgraph_node *); +void cgraph_insert_node_to_hashtable (struct cgraph_node *node); +void cgraph_remove_edge (struct cgraph_edge *); +void cgraph_remove_node (struct cgraph_node *); +bool cgraph_remove_node_and_inline_clones (struct cgraph_node *, struct cgraph_node *); +void cgraph_release_function_body (struct cgraph_node *); +void cgraph_node_remove_callees (struct cgraph_node *node); +struct cgraph_edge *cgraph_create_edge (struct cgraph_node *, + struct cgraph_node *, + gimple, gcov_type, int, int); +struct cgraph_edge *cgraph_create_indirect_edge (struct cgraph_node *, gimple, + int, gcov_type, int, int); +struct cgraph_indirect_call_info *cgraph_allocate_init_indirect_info (void); +struct cgraph_node * cgraph_get_node (const_tree); +struct cgraph_node * cgraph_get_node_or_alias (const_tree); +struct cgraph_node * cgraph_node (tree); +struct cgraph_node * cgraph_same_body_alias (struct cgraph_node *, tree, tree); +struct cgraph_node * cgraph_add_thunk (struct cgraph_node *, tree, tree, bool, HOST_WIDE_INT, + HOST_WIDE_INT, tree, tree); +void cgraph_remove_same_body_alias (struct cgraph_node *); +struct cgraph_node *cgraph_node_for_asm (tree); +struct cgraph_edge *cgraph_edge (struct cgraph_node *, gimple); +void cgraph_set_call_stmt (struct cgraph_edge *, gimple); +void cgraph_set_call_stmt_including_clones (struct cgraph_node *, gimple, gimple); +void cgraph_create_edge_including_clones (struct cgraph_node *, + struct cgraph_node *, + gimple, gimple, gcov_type, int, int, + cgraph_inline_failed_t); +void cgraph_update_edges_for_call_stmt (gimple, tree, gimple); +struct cgraph_local_info *cgraph_local_info (tree); +struct cgraph_global_info *cgraph_global_info (tree); +struct cgraph_rtl_info *cgraph_rtl_info (tree); +const char * cgraph_node_name (struct cgraph_node *); +struct cgraph_edge * cgraph_clone_edge (struct cgraph_edge *, + struct cgraph_node *, gimple, + unsigned, gcov_type, int, int, bool); +struct cgraph_node * cgraph_clone_node (struct cgraph_node *, tree, gcov_type, int, + int, bool, VEC(cgraph_edge_p,heap) *); + +void cgraph_redirect_edge_callee (struct cgraph_edge *, struct cgraph_node *); +void cgraph_make_edge_direct (struct cgraph_edge *, struct cgraph_node *, + HOST_WIDE_INT); + +struct cgraph_asm_node *cgraph_add_asm_node (tree); + +bool cgraph_function_possibly_inlined_p (tree); +void cgraph_unnest_node (struct cgraph_node *); + +enum availability cgraph_function_body_availability (struct cgraph_node *); +void cgraph_add_new_function (tree, bool); +const char* cgraph_inline_failed_string (cgraph_inline_failed_t); +struct cgraph_node * cgraph_create_virtual_clone (struct cgraph_node *old_node, + VEC(cgraph_edge_p,heap)*, + VEC(ipa_replace_map_p,gc)* tree_map, + bitmap args_to_skip, + const char *clone_name); + +void cgraph_set_nothrow_flag (struct cgraph_node *, bool); +void cgraph_set_const_flag (struct cgraph_node *, bool, bool); +void cgraph_set_pure_flag (struct cgraph_node *, bool, bool); +tree clone_function_name (tree decl, const char *); +bool cgraph_node_cannot_return (struct cgraph_node *); +bool cgraph_edge_cannot_lead_to_return (struct cgraph_edge *); +bool cgraph_will_be_removed_from_program_if_no_direct_calls + (struct cgraph_node *node); +bool cgraph_can_remove_if_no_direct_calls_and_refs_p + (struct cgraph_node *node); +bool resolution_used_from_other_file_p (enum ld_plugin_symbol_resolution resolution); +bool cgraph_used_from_object_file_p (struct cgraph_node *node); +bool varpool_used_from_object_file_p (struct varpool_node *node); + +/* In cgraphunit.c */ +extern FILE *cgraph_dump_file; +void cgraph_finalize_function (tree, bool); +void cgraph_mark_if_needed (tree); +void cgraph_finalize_compilation_unit (void); +void cgraph_optimize (void); +void cgraph_mark_needed_node (struct cgraph_node *); +void cgraph_mark_address_taken_node (struct cgraph_node *); +void cgraph_mark_reachable_node (struct cgraph_node *); +bool cgraph_inline_p (struct cgraph_edge *, cgraph_inline_failed_t *reason); +bool cgraph_preserve_function_body_p (tree); +void verify_cgraph (void); +void verify_cgraph_node (struct cgraph_node *); +void cgraph_build_static_cdtor (char which, tree body, int priority); +void cgraph_reset_static_var_maps (void); +void init_cgraph (void); +struct cgraph_node *cgraph_function_versioning (struct cgraph_node *, + VEC(cgraph_edge_p,heap)*, + VEC(ipa_replace_map_p,gc)*, + bitmap, bitmap, basic_block, + const char *); +void tree_function_versioning (tree, tree, VEC (ipa_replace_map_p,gc)*, bool, bitmap, + bitmap, basic_block); +struct cgraph_node *save_inline_function_body (struct cgraph_node *); +void record_references_in_initializer (tree, bool); +bool cgraph_process_new_functions (void); + +bool cgraph_decide_is_function_needed (struct cgraph_node *, tree); + +typedef void (*cgraph_edge_hook)(struct cgraph_edge *, void *); +typedef void (*cgraph_node_hook)(struct cgraph_node *, void *); +typedef void (*cgraph_2edge_hook)(struct cgraph_edge *, struct cgraph_edge *, + void *); +typedef void (*cgraph_2node_hook)(struct cgraph_node *, struct cgraph_node *, + void *); +struct cgraph_edge_hook_list; +struct cgraph_node_hook_list; +struct cgraph_2edge_hook_list; +struct cgraph_2node_hook_list; +struct cgraph_edge_hook_list *cgraph_add_edge_removal_hook (cgraph_edge_hook, void *); +void cgraph_remove_edge_removal_hook (struct cgraph_edge_hook_list *); +struct cgraph_node_hook_list *cgraph_add_node_removal_hook (cgraph_node_hook, + void *); +void cgraph_remove_node_removal_hook (struct cgraph_node_hook_list *); +struct cgraph_node_hook_list *cgraph_add_function_insertion_hook (cgraph_node_hook, + void *); +void cgraph_remove_function_insertion_hook (struct cgraph_node_hook_list *); +void cgraph_call_function_insertion_hooks (struct cgraph_node *node); +struct cgraph_2edge_hook_list *cgraph_add_edge_duplication_hook (cgraph_2edge_hook, void *); +void cgraph_remove_edge_duplication_hook (struct cgraph_2edge_hook_list *); +struct cgraph_2node_hook_list *cgraph_add_node_duplication_hook (cgraph_2node_hook, void *); +void cgraph_remove_node_duplication_hook (struct cgraph_2node_hook_list *); +void cgraph_materialize_all_clones (void); +gimple cgraph_redirect_edge_call_stmt_to_callee (struct cgraph_edge *); +bool cgraph_propagate_frequency (struct cgraph_node *node); +/* In cgraphbuild.c */ +unsigned int rebuild_cgraph_edges (void); +void cgraph_rebuild_references (void); +void reset_inline_failed (struct cgraph_node *); +int compute_call_stmt_bb_frequency (tree, basic_block bb); + +/* In ipa.c */ +bool cgraph_remove_unreachable_nodes (bool, FILE *); +int cgraph_postorder (struct cgraph_node **); +cgraph_node_set cgraph_node_set_new (void); +cgraph_node_set_iterator cgraph_node_set_find (cgraph_node_set, + struct cgraph_node *); +void cgraph_node_set_add (cgraph_node_set, struct cgraph_node *); +void cgraph_node_set_remove (cgraph_node_set, struct cgraph_node *); +void dump_cgraph_node_set (FILE *, cgraph_node_set); +void debug_cgraph_node_set (cgraph_node_set); + +varpool_node_set varpool_node_set_new (void); +varpool_node_set_iterator varpool_node_set_find (varpool_node_set, + struct varpool_node *); +void varpool_node_set_add (varpool_node_set, struct varpool_node *); +void varpool_node_set_remove (varpool_node_set, struct varpool_node *); +void dump_varpool_node_set (FILE *, varpool_node_set); +void debug_varpool_node_set (varpool_node_set); +void ipa_discover_readonly_nonaddressable_vars (void); +bool cgraph_comdat_can_be_unshared_p (struct cgraph_node *); + +/* In predict.c */ +bool cgraph_maybe_hot_edge_p (struct cgraph_edge *e); + +/* In varpool.c */ +extern GTY(()) struct varpool_node *varpool_nodes_queue; +extern GTY(()) struct varpool_node *varpool_nodes; + +struct varpool_node *varpool_node (tree); +struct varpool_node *varpool_node_for_asm (tree asmname); +void varpool_mark_needed_node (struct varpool_node *); +void debug_varpool (void); +void dump_varpool (FILE *); +void dump_varpool_node (FILE *, struct varpool_node *); + +void varpool_finalize_decl (tree); +bool decide_is_variable_needed (struct varpool_node *, tree); +enum availability cgraph_variable_initializer_availability (struct varpool_node *); +void cgraph_make_decl_local (tree); +void cgraph_make_node_local (struct cgraph_node *); +bool cgraph_node_can_be_local_p (struct cgraph_node *); + + +struct varpool_node * varpool_get_node (const_tree decl); +void varpool_remove_node (struct varpool_node *node); +void varpool_finalize_named_section_flags (struct varpool_node *node); +bool varpool_assemble_pending_decls (void); +bool varpool_assemble_decl (struct varpool_node *node); +bool varpool_analyze_pending_decls (void); +void varpool_remove_unreferenced_decls (void); +void varpool_empty_needed_queue (void); +struct varpool_node * varpool_extra_name_alias (tree, tree); +const char * varpool_node_name (struct varpool_node *node); +void varpool_reset_queue (void); +bool const_value_known_p (tree); + +/* Walk all reachable static variables. */ +#define FOR_EACH_STATIC_VARIABLE(node) \ + for ((node) = varpool_nodes_queue; (node); (node) = (node)->next_needed) + +/* Return first reachable static variable with initializer. */ +static inline struct varpool_node * +varpool_first_static_initializer (void) +{ + struct varpool_node *node; + for (node = varpool_nodes_queue; node; node = node->next_needed) + { + gcc_checking_assert (TREE_CODE (node->decl) == VAR_DECL); + if (DECL_INITIAL (node->decl)) + return node; + } + return NULL; +} + +/* Return next reachable static variable with initializer after NODE. */ +static inline struct varpool_node * +varpool_next_static_initializer (struct varpool_node *node) +{ + for (node = node->next_needed; node; node = node->next_needed) + { + gcc_checking_assert (TREE_CODE (node->decl) == VAR_DECL); + if (DECL_INITIAL (node->decl)) + return node; + } + return NULL; +} + +/* Walk all static variables with initializer set. */ +#define FOR_EACH_STATIC_INITIALIZER(node) \ + for ((node) = varpool_first_static_initializer (); (node); \ + (node) = varpool_next_static_initializer (node)) + +/* In ipa-inline.c */ +void cgraph_clone_inlined_nodes (struct cgraph_edge *, bool, bool); +void compute_inline_parameters (struct cgraph_node *); + + +/* Create a new static variable of type TYPE. */ +tree add_new_static_var (tree type); + +/* Return true if iterator CSI points to nothing. */ +static inline bool +csi_end_p (cgraph_node_set_iterator csi) +{ + return csi.index >= VEC_length (cgraph_node_ptr, csi.set->nodes); +} + +/* Advance iterator CSI. */ +static inline void +csi_next (cgraph_node_set_iterator *csi) +{ + csi->index++; +} + +/* Return the node pointed to by CSI. */ +static inline struct cgraph_node * +csi_node (cgraph_node_set_iterator csi) +{ + return VEC_index (cgraph_node_ptr, csi.set->nodes, csi.index); +} + +/* Return an iterator to the first node in SET. */ +static inline cgraph_node_set_iterator +csi_start (cgraph_node_set set) +{ + cgraph_node_set_iterator csi; + + csi.set = set; + csi.index = 0; + return csi; +} + +/* Return true if SET contains NODE. */ +static inline bool +cgraph_node_in_set_p (struct cgraph_node *node, cgraph_node_set set) +{ + cgraph_node_set_iterator csi; + csi = cgraph_node_set_find (set, node); + return !csi_end_p (csi); +} + +/* Return number of nodes in SET. */ +static inline size_t +cgraph_node_set_size (cgraph_node_set set) +{ + return htab_elements (set->hashtab); +} + +/* Return true if iterator VSI points to nothing. */ +static inline bool +vsi_end_p (varpool_node_set_iterator vsi) +{ + return vsi.index >= VEC_length (varpool_node_ptr, vsi.set->nodes); +} + +/* Advance iterator VSI. */ +static inline void +vsi_next (varpool_node_set_iterator *vsi) +{ + vsi->index++; +} + +/* Return the node pointed to by VSI. */ +static inline struct varpool_node * +vsi_node (varpool_node_set_iterator vsi) +{ + return VEC_index (varpool_node_ptr, vsi.set->nodes, vsi.index); +} + +/* Return an iterator to the first node in SET. */ +static inline varpool_node_set_iterator +vsi_start (varpool_node_set set) +{ + varpool_node_set_iterator vsi; + + vsi.set = set; + vsi.index = 0; + return vsi; +} + +/* Return true if SET contains NODE. */ +static inline bool +varpool_node_in_set_p (struct varpool_node *node, varpool_node_set set) +{ + varpool_node_set_iterator vsi; + vsi = varpool_node_set_find (set, node); + return !vsi_end_p (vsi); +} + +/* Return number of nodes in SET. */ +static inline size_t +varpool_node_set_size (varpool_node_set set) +{ + return htab_elements (set->hashtab); +} + +/* Uniquize all constants that appear in memory. + Each constant in memory thus far output is recorded + in `const_desc_table'. */ + +struct GTY(()) constant_descriptor_tree { + /* A MEM for the constant. */ + rtx rtl; + + /* The value of the constant. */ + tree value; + + /* Hash of value. Computing the hash from value each time + hashfn is called can't work properly, as that means recursive + use of the hash table during hash table expansion. */ + hashval_t hash; +}; + +/* Return true if set is nonempty. */ +static inline bool +cgraph_node_set_nonempty_p (cgraph_node_set set) +{ + return !VEC_empty (cgraph_node_ptr, set->nodes); +} + +/* Return true if set is nonempty. */ +static inline bool +varpool_node_set_nonempty_p (varpool_node_set set) +{ + return !VEC_empty (varpool_node_ptr, set->nodes); +} + +/* Return true when function NODE is only called directly. + i.e. it is not externally visible, address was not taken and + it is not used in any other non-standard way. */ + +static inline bool +cgraph_only_called_directly_p (struct cgraph_node *node) +{ + gcc_assert (!node->global.inlined_to); + return (!node->needed && !node->address_taken + && !node->reachable_from_other_partition + && !DECL_VIRTUAL_P (node->decl) + && !DECL_STATIC_CONSTRUCTOR (node->decl) + && !DECL_STATIC_DESTRUCTOR (node->decl) + && !node->local.externally_visible); +} + +/* Return true when function NODE can be removed from callgraph + if all direct calls are eliminated. */ + +static inline bool +cgraph_can_remove_if_no_direct_calls_p (struct cgraph_node *node) +{ + /* Extern inlines can always go, we will use the external definition. */ + if (DECL_EXTERNAL (node->decl)) + return true; + return !node->address_taken && cgraph_can_remove_if_no_direct_calls_and_refs_p (node); +} + +/* Return true when function NODE can be removed from callgraph + if all direct calls are eliminated. */ + +static inline bool +varpool_can_remove_if_no_refs (struct varpool_node *node) +{ + return (!node->force_output && !node->used_from_other_partition + && (flag_toplevel_reorder || DECL_COMDAT (node->decl) + || DECL_ARTIFICIAL (node->decl)) + && (DECL_COMDAT (node->decl) || !node->externally_visible)); +} + +/* Return true when all references to VNODE must be visible in ipa_ref_list. + i.e. if the variable is not externally visible or not used in some magic + way (asm statement or such). + The magic uses are all summarized in force_output flag. */ + +static inline bool +varpool_all_refs_explicit_p (struct varpool_node *vnode) +{ + return (!vnode->externally_visible + && !vnode->used_from_other_partition + && !vnode->force_output); +} + +/* Constant pool accessor function. */ +htab_t constant_pool_htab (void); + +/* FIXME: inappropriate dependency of cgraph on IPA. */ +#include "ipa-ref-inline.h" + +#endif /* GCC_CGRAPH_H */ -- cgit v1.2.3