/* Declarations for rtx-reader support for gen* routines. Copyright (C) 2000, 2002, 2003, 2004 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 2, 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 COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef GCC_GENSUPPORT_H #define GCC_GENSUPPORT_H struct obstack; extern struct obstack *rtl_obstack; extern const char *in_fname; extern int init_md_reader_args_cb (int, char **, bool (*)(const char *)); extern int init_md_reader_args (int, char **); extern rtx read_md_rtx (int *, int *); extern void message_with_line (int, const char *, ...) ATTRIBUTE_PRINTF_2; /* Set this to 0 to disable automatic elision of insn patterns which can never be used in this configuration. See genconditions.c. Must be set before calling init_md_reader. */ extern int insn_elision; /* If this is 1, the insn elision table doesn't even exist yet; maybe_eval_c_test will always return -1. This is distinct from insn_elision because genflags and gencodes need to see all the patterns, but treat elided patterns differently. */ extern const int insn_elision_unavailable; /* If the C test passed as the argument can be evaluated at compile time, return its truth value; else return -1. The test must have appeared somewhere in the machine description when genconditions was run. */ extern int maybe_eval_c_test (const char *); /* This table should not be accessed directly; use maybe_eval_c_test. */ struct c_test { const char *expr; int value; }; extern const struct c_test insn_conditions[]; extern const size_t n_insn_conditions; #ifdef __HASHTAB_H__ extern hashval_t hash_c_test (const void *); extern int cmp_c_test (const void *, const void *); #endif extern int n_comma_elts (const char *); extern const char *scan_comma_elt (const char **); /* Predicate handling: helper functions and data structures. */ struct pred_data { struct pred_data *next; /* for iterating over the set of all preds */ const char *name; /* predicate name */ bool special; /* special handling of modes? */ /* data used primarily by genpreds.c */ const char *c_block; /* C test block */ rtx exp; /* RTL test expression */ /* data used primarily by genrecog.c */ enum rtx_code singleton; /* if pred takes only one code, that code */ bool allows_non_lvalue; /* if pred allows non-lvalue expressions */ bool allows_non_const; /* if pred allows non-const expressions */ bool codes[NUM_RTX_CODE]; /* set of codes accepted */ }; extern struct pred_data *first_predicate; extern struct pred_data *lookup_predicate (const char *); extern void add_predicate (struct pred_data *); #define FOR_ALL_PREDICATES(p) for (p = first_predicate; p; p = p->next) #endif /* GCC_GENSUPPORT_H */