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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
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1 files changed, 312 insertions, 0 deletions

diff --git a/gcc/recog.h b/gcc/recog.h
new file mode 100644
index 000000000..534d2c99b
--- /dev/null
+++ b/gcc/recog.h
@@ -0,0 +1,312 @@
+/* Declarations for interface to insn recognizer and insn-output.c.
+   Copyright (C) 1987, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004,
+   2005, 2006, 2007, 2008, 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/>.  */
+
+#ifndef GCC_RECOG_H
+#define GCC_RECOG_H
+
+/* Random number that should be large enough for all purposes.  */
+#define MAX_RECOG_ALTERNATIVES 30
+
+/* Types of operands.  */
+enum op_type {
+  OP_IN,
+  OP_OUT,
+  OP_INOUT
+};
+
+struct operand_alternative
+{
+  /* Pointer to the beginning of the constraint string for this alternative,
+     for easier access by alternative number.  */
+  const char *constraint;
+
+  /* The register class valid for this alternative (possibly NO_REGS).  */
+  enum reg_class cl;
+
+  /* "Badness" of this alternative, computed from number of '?' and '!'
+     characters in the constraint string.  */
+  unsigned int reject;
+
+  /* -1 if no matching constraint was found, or an operand number.  */
+  int matches;
+  /* The same information, but reversed: -1 if this operand is not
+     matched by any other, or the operand number of the operand that
+     matches this one.  */
+  int matched;
+
+  /* Nonzero if '&' was found in the constraint string.  */
+  unsigned int earlyclobber:1;
+  /* Nonzero if TARGET_MEM_CONSTRAINT was found in the constraint
+     string.  */
+  unsigned int memory_ok:1;
+  /* Nonzero if 'o' was found in the constraint string.  */
+  unsigned int offmem_ok:1;
+  /* Nonzero if 'V' was found in the constraint string.  */
+  unsigned int nonoffmem_ok:1;
+  /* Nonzero if '<' was found in the constraint string.  */
+  unsigned int decmem_ok:1;
+  /* Nonzero if '>' was found in the constraint string.  */
+  unsigned int incmem_ok:1;
+  /* Nonzero if 'p' was found in the constraint string.  */
+  unsigned int is_address:1;
+  /* Nonzero if 'X' was found in the constraint string, or if the constraint
+     string for this alternative was empty.  */
+  unsigned int anything_ok:1;
+};
+
+
+extern void init_recog (void);
+extern void init_recog_no_volatile (void);
+extern int check_asm_operands (rtx);
+extern int asm_operand_ok (rtx, const char *, const char **);
+extern bool validate_change (rtx, rtx *, rtx, bool);
+extern bool validate_unshare_change (rtx, rtx *, rtx, bool);
+extern bool canonicalize_change_group (rtx insn, rtx x);
+extern int insn_invalid_p (rtx);
+extern int verify_changes (int);
+extern void confirm_change_group (void);
+extern int apply_change_group (void);
+extern int num_validated_changes (void);
+extern void cancel_changes (int);
+extern int constrain_operands (int);
+extern int constrain_operands_cached (int);
+extern int memory_address_addr_space_p (enum machine_mode, rtx, addr_space_t);
+#define memory_address_p(mode,addr) \
+	memory_address_addr_space_p ((mode), (addr), ADDR_SPACE_GENERIC)
+extern int strict_memory_address_addr_space_p (enum machine_mode, rtx,
+					       addr_space_t);
+#define strict_memory_address_p(mode,addr) \
+	strict_memory_address_addr_space_p ((mode), (addr), ADDR_SPACE_GENERIC)
+extern int validate_replace_rtx_subexp (rtx, rtx, rtx, rtx *);
+extern int validate_replace_rtx (rtx, rtx, rtx);
+extern int validate_replace_rtx_part (rtx, rtx, rtx *, rtx);
+extern int validate_replace_rtx_part_nosimplify (rtx, rtx, rtx *, rtx);
+extern void validate_replace_rtx_group (rtx, rtx, rtx);
+extern void validate_replace_src_group (rtx, rtx, rtx);
+extern bool validate_simplify_insn (rtx insn);
+extern int num_changes_pending (void);
+#ifdef HAVE_cc0
+extern int next_insn_tests_no_inequality (rtx);
+#endif
+extern bool reg_fits_class_p (const_rtx, reg_class_t, int, enum machine_mode);
+
+extern int offsettable_memref_p (rtx);
+extern int offsettable_nonstrict_memref_p (rtx);
+extern int offsettable_address_addr_space_p (int, enum machine_mode, rtx,
+					     addr_space_t);
+#define offsettable_address_p(strict,mode,addr) \
+	offsettable_address_addr_space_p ((strict), (mode), (addr), \
+					  ADDR_SPACE_GENERIC)
+extern bool mode_dependent_address_p (rtx);
+
+extern int recog (rtx, rtx, int *);
+#ifndef GENERATOR_FILE
+static inline int recog_memoized (rtx insn);
+#endif
+extern void add_clobbers (rtx, int);
+extern int added_clobbers_hard_reg_p (int);
+extern void insn_extract (rtx);
+extern void extract_insn (rtx);
+extern void extract_constrain_insn_cached (rtx);
+extern void extract_insn_cached (rtx);
+extern void preprocess_constraints (void);
+extern rtx peep2_next_insn (int);
+extern int peep2_regno_dead_p (int, int);
+extern int peep2_reg_dead_p (int, rtx);
+#ifdef CLEAR_HARD_REG_SET
+extern rtx peep2_find_free_register (int, int, const char *,
+				     enum machine_mode, HARD_REG_SET *);
+#endif
+extern rtx peephole2_insns (rtx, rtx, int *);
+
+extern int store_data_bypass_p (rtx, rtx);
+extern int if_test_bypass_p (rtx, rtx);
+
+#ifndef GENERATOR_FILE
+/* Try recognizing the instruction INSN,
+   and return the code number that results.
+   Remember the code so that repeated calls do not
+   need to spend the time for actual rerecognition.
+
+   This function is the normal interface to instruction recognition.
+   The automatically-generated function `recog' is normally called
+   through this one.  */
+
+static inline int
+recog_memoized (rtx insn)
+{
+  if (INSN_CODE (insn) < 0)
+    INSN_CODE (insn) = recog (PATTERN (insn), insn, 0);
+  return INSN_CODE (insn);
+}
+#endif
+
+/* Skip chars until the next ',' or the end of the string.  This is
+   useful to skip alternatives in a constraint string.  */
+static inline const char *
+skip_alternative (const char *p)
+{
+  const char *r = p;
+  while (*r != '\0' && *r != ',')
+    r++;
+  if (*r == ',')
+    r++;
+  return r;
+}
+
+/* Nonzero means volatile operands are recognized.  */
+extern int volatile_ok;
+
+/* Set by constrain_operands to the number of the alternative that
+   matched.  */
+extern int which_alternative;
+
+/* The following vectors hold the results from insn_extract.  */
+
+struct recog_data
+{
+  /* It is very tempting to make the 5 operand related arrays into a
+     structure and index on that.  However, to be source compatible
+     with all of the existing md file insn constraints and output
+     templates, we need `operand' as a flat array.  Without that
+     member, making an array for the rest seems pointless.  */
+
+  /* Gives value of operand N.  */
+  rtx operand[MAX_RECOG_OPERANDS];
+
+  /* Gives location where operand N was found.  */
+  rtx *operand_loc[MAX_RECOG_OPERANDS];
+
+  /* Gives the constraint string for operand N.  */
+  const char *constraints[MAX_RECOG_OPERANDS];
+
+  /* Nonzero if operand N is a match_operator or a match_parallel.  */
+  char is_operator[MAX_RECOG_OPERANDS];
+
+  /* Gives the mode of operand N.  */
+  enum machine_mode operand_mode[MAX_RECOG_OPERANDS];
+
+  /* Gives the type (in, out, inout) for operand N.  */
+  enum op_type operand_type[MAX_RECOG_OPERANDS];
+
+  /* Gives location where the Nth duplicate-appearance of an operand
+     was found.  This is something that matched MATCH_DUP.  */
+  rtx *dup_loc[MAX_DUP_OPERANDS];
+
+  /* Gives the operand number that was duplicated in the Nth
+     duplicate-appearance of an operand.  */
+  char dup_num[MAX_DUP_OPERANDS];
+
+  /* ??? Note that these are `char' instead of `unsigned char' to (try to)
+     avoid certain lossage from K&R C, wherein `unsigned char' default
+     promotes to `unsigned int' instead of `int' as in ISO C.  As of 1999,
+     the most common places to bootstrap from K&R C are SunOS and HPUX,
+     both of which have signed characters by default.  The only other
+     supported natives that have both K&R C and unsigned characters are
+     ROMP and Irix 3, and neither have been seen for a while, but do
+     continue to consider unsignedness when performing arithmetic inside
+     a comparison.  */
+
+  /* The number of operands of the insn.  */
+  char n_operands;
+
+  /* The number of MATCH_DUPs in the insn.  */
+  char n_dups;
+
+  /* The number of alternatives in the constraints for the insn.  */
+  char n_alternatives;
+
+  /* True if insn is ASM_OPERANDS.  */
+  bool is_asm;
+
+  /* Specifies whether an insn alternative is enabled using the
+     `enabled' attribute in the insn pattern definition.  For back
+     ends not using the `enabled' attribute the array fields are
+     always set to `true' in expand_insn.  */
+  bool alternative_enabled_p [MAX_RECOG_ALTERNATIVES];
+
+  /* In case we are caching, hold insn data was generated for.  */
+  rtx insn;
+};
+
+extern struct recog_data recog_data;
+
+/* Contains a vector of operand_alternative structures for every operand.
+   Set up by preprocess_constraints.  */
+extern struct operand_alternative recog_op_alt[MAX_RECOG_OPERANDS][MAX_RECOG_ALTERNATIVES];
+
+/* A table defined in insn-output.c that give information about
+   each insn-code value.  */
+
+typedef int (*insn_operand_predicate_fn) (rtx, enum machine_mode);
+typedef const char * (*insn_output_fn) (rtx *, rtx);
+typedef rtx (*insn_gen_fn) (rtx, ...);
+
+struct insn_operand_data
+{
+  const insn_operand_predicate_fn predicate;
+
+  const char *const constraint;
+
+  ENUM_BITFIELD(machine_mode) const mode : 16;
+
+  const char strict_low;
+
+  const char is_operator;
+
+  const char eliminable;
+};
+
+/* Legal values for insn_data.output_format.  Indicate what type of data
+   is stored in insn_data.output.  */
+#define INSN_OUTPUT_FORMAT_NONE		0	/* abort */
+#define INSN_OUTPUT_FORMAT_SINGLE	1	/* const char * */
+#define INSN_OUTPUT_FORMAT_MULTI	2	/* const char * const * */
+#define INSN_OUTPUT_FORMAT_FUNCTION	3	/* const char * (*)(...) */
+
+struct insn_data_d
+{
+  const char *const name;
+#if HAVE_DESIGNATED_INITIALIZERS
+  union {
+    const char *single;
+    const char *const *multi;
+    insn_output_fn function;
+  } output;
+#else
+  struct {
+    const char *single;
+    const char *const *multi;
+    insn_output_fn function;
+  } output;
+#endif
+  const insn_gen_fn genfun;
+  const struct insn_operand_data *const operand;
+
+  const char n_operands;
+  const char n_dups;
+  const char n_alternatives;
+  const char output_format;
+};
+
+extern const struct insn_data_d insn_data[];
+extern int peep2_current_count;
+
+#endif /* GCC_RECOG_H */