1 /* Declarations for rtx-reader support for gen* routines. 2 Copyright (C) 2000, 2002, 2003, 2004, 2007, 2008 3 Free Software Foundation, Inc. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 3, or (at your option) any later 10 version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING3. If not see 19 <http://www.gnu.org/licenses/>. */ 20 21 #ifndef GCC_GENSUPPORT_H 22 #define GCC_GENSUPPORT_H 23 24 struct obstack; 25 extern struct obstack *rtl_obstack; 26 extern const char *in_fname; 27 28 extern int init_md_reader_args_cb (int, char **, bool (*)(const char *)); 29 extern int init_md_reader_args (int, char **); 30 extern rtx read_md_rtx (int *, int *); 31 32 extern void message_with_line (int, const char *, ...) 33 ATTRIBUTE_PRINTF_2; 34 35 /* Set this to 0 to disable automatic elision of insn patterns which 36 can never be used in this configuration. See genconditions.c. 37 Must be set before calling init_md_reader. */ 38 extern int insn_elision; 39 40 /* If the C test passed as the argument can be evaluated at compile 41 time, return its truth value; else return -1. The test must have 42 appeared somewhere in the machine description when genconditions 43 was run. */ 44 extern int maybe_eval_c_test (const char *); 45 46 /* Add an entry to the table of conditions. Used by genconditions and 47 by read-rtl.c. */ 48 extern void add_c_test (const char *, int); 49 50 /* This structure is used internally by gensupport.c and genconditions.c. */ 51 struct c_test 52 { 53 const char *expr; 54 int value; 55 }; 56 57 #ifdef __HASHTAB_H__ 58 extern hashval_t hash_c_test (const void *); 59 extern int cmp_c_test (const void *, const void *); 60 extern void traverse_c_tests (htab_trav, void *); 61 #endif 62 63 extern int n_comma_elts (const char *); 64 extern const char *scan_comma_elt (const char **); 65 66 /* Predicate handling: helper functions and data structures. */ 67 68 struct pred_data 69 { 70 struct pred_data *next; /* for iterating over the set of all preds */ 71 const char *name; /* predicate name */ 72 bool special; /* special handling of modes? */ 73 74 /* data used primarily by genpreds.c */ 75 const char *c_block; /* C test block */ 76 rtx exp; /* RTL test expression */ 77 78 /* data used primarily by genrecog.c */ 79 enum rtx_code singleton; /* if pred takes only one code, that code */ 80 int num_codes; /* number of codes accepted */ 81 bool allows_non_lvalue; /* if pred allows non-lvalue expressions */ 82 bool allows_non_const; /* if pred allows non-const expressions */ 83 bool codes[NUM_RTX_CODE]; /* set of codes accepted */ 84 }; 85 86 extern struct pred_data *first_predicate; 87 extern struct pred_data *lookup_predicate (const char *); 88 extern void add_predicate_code (struct pred_data *, enum rtx_code); 89 extern void add_predicate (struct pred_data *); 90 91 #define FOR_ALL_PREDICATES(p) for (p = first_predicate; p; p = p->next) 92 93 /* This callback will be invoked whenever an rtl include directive is 94 processed. To be used for creation of the dependency file. */ 95 extern void (*include_callback) (const char *); 96 97 #endif /* GCC_GENSUPPORT_H */ 98