gensupport.h revision 132718
1/* Declarations for rtx-reader support for gen* routines. 2 Copyright (C) 2000, 2002, 2003 Free Software Foundation, Inc. 3 4This file is part of GCC. 5 6GCC is free software; you can redistribute it and/or modify it under 7the terms of the GNU General Public License as published by the Free 8Software Foundation; either version 2, or (at your option) any later 9version. 10 11GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12WARRANTY; without even the implied warranty of MERCHANTABILITY or 13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14for more details. 15 16You should have received a copy of the GNU General Public License 17along with GCC; see the file COPYING. If not, write to the Free 18Software Foundation, 59 Temple Place - Suite 330, Boston, MA 1902111-1307, USA. */ 20 21#ifndef GCC_GENSUPPORT_H 22#define GCC_GENSUPPORT_H 23 24struct obstack; 25extern struct obstack *rtl_obstack; 26 27extern int init_md_reader_args (int, char **); 28extern int init_md_reader (const char *); 29extern rtx read_md_rtx (int *, int *); 30 31extern 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. */ 37extern 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. */ 43extern 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. */ 49extern int maybe_eval_c_test (const char *); 50 51/* This table should not be accessed directly; use maybe_eval_c_test. */ 52struct c_test 53{ 54 const char *expr; 55 int value; 56}; 57 58extern const struct c_test insn_conditions[]; 59extern const size_t n_insn_conditions; 60 61#ifdef __HASHTAB_H__ 62extern hashval_t hash_c_test (const void *); 63extern int cmp_c_test (const void *, const void *); 64#endif 65 66extern int n_comma_elts (const char *); 67extern const char *scan_comma_elt (const char **); 68 69#endif /* GCC_GENSUPPORT_H */ 70