gcc/gensupport.h

   1 /* Declarations for rtx-reader support for gen* routines.
   2    Copyright (C) 2000, 2002, 2003 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 2, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING.  If not, write to the Free
  18 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  19 02111-1307, USA.  */
  20
  21 #ifndef GCC_GENSUPPORT_H
  22 #define GCC_GENSUPPORT_H
  23
  24 struct obstack;
  25 extern struct obstack *rtl_obstack;
  26
  27 extern int init_md_reader_args (int, char **);
  28 extern int init_md_reader (const char *);
  29 extern rtx read_md_rtx (int *, int *);
  30
  31 extern void message_with_line (int, const char *, ...)
  32      ATTRIBUTE_PRINTF_2;
  33
  34 /* Set this to 0 to disable automatic elision of insn patterns which
  35    can never be used in this configuration.  See genconditions.c.
  36    Must be set before calling init_md_reader.  */
  37 extern int insn_elision;
  38
  39 /* If this is 1, the insn elision table doesn't even exist yet;
  40    maybe_eval_c_test will always return -1.  This is distinct from
  41    insn_elision because genflags and gencodes need to see all the
  42    patterns, but treat elided patterns differently.  */
  43 extern const int insn_elision_unavailable;
  44
  45 /* If the C test passed as the argument can be evaluated at compile
  46    time, return its truth value; else return -1.  The test must have
  47    appeared somewhere in the machine description when genconditions
  48    was run.  */
  49 extern int maybe_eval_c_test (const char *);
  50
  51 /* This table should not be accessed directly; use maybe_eval_c_test.  */
  52 struct c_test
  53 {
  54   const char *expr;
  55   int value;
  56 };
  57
  58 extern const struct c_test insn_conditions[];
  59 extern const size_t n_insn_conditions;
  60
  61 #ifdef __HASHTAB_H__
  62 extern hashval_t hash_c_test (const void *);
  63 extern int cmp_c_test (const void *, const void *);
  64 #endif
  65
  66 extern int n_comma_elts (const char *);
  67 extern const char *scan_comma_elt (const char **);
  68
  69 #endif /* GCC_GENSUPPORT_H */