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/* Declarations for rtx-reader support for gen* routines.
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Copyright (C) 2000, 2002, 2003, 2004, 2007 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_GENSUPPORT_H
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#define GCC_GENSUPPORT_H
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struct obstack;
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extern struct obstack *rtl_obstack;
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extern const char *in_fname;
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extern int init_md_reader_args_cb (int, char **, bool (*)(const char *));
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extern int init_md_reader_args (int, char **);
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extern rtx read_md_rtx (int *, int *);
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extern void message_with_line (int, const char *, ...)
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ATTRIBUTE_PRINTF_2;
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/* Set this to 0 to disable automatic elision of insn patterns which
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can never be used in this configuration. See genconditions.c.
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Must be set before calling init_md_reader. */
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extern int insn_elision;
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/* If the C test passed as the argument can be evaluated at compile
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time, return its truth value; else return -1. The test must have
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appeared somewhere in the machine description when genconditions
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was run. */
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extern int maybe_eval_c_test (const char *);
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/* Add an entry to the table of conditions. Used by genconditions and
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by read-rtl.c. */
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extern void add_c_test (const char *, int);
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/* This structure is used internally by gensupport.c and genconditions.c. */
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struct c_test
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{
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const char *expr;
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int value;
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};
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#ifdef __HASHTAB_H__
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extern hashval_t hash_c_test (const void *);
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extern int cmp_c_test (const void *, const void *);
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extern void traverse_c_tests (htab_trav, void *);
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#endif
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extern int n_comma_elts (const char *);
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extern const char *scan_comma_elt (const char **);
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/* Predicate handling: helper functions and data structures. */
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struct pred_data
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{
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struct pred_data *next; /* for iterating over the set of all preds */
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const char *name; /* predicate name */
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bool special; /* special handling of modes? */
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/* data used primarily by genpreds.c */
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const char *c_block; /* C test block */
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rtx exp; /* RTL test expression */
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/* data used primarily by genrecog.c */
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enum rtx_code singleton; /* if pred takes only one code, that code */
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bool allows_non_lvalue; /* if pred allows non-lvalue expressions */
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bool allows_non_const; /* if pred allows non-const expressions */
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bool codes[NUM_RTX_CODE]; /* set of codes accepted */
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};
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extern struct pred_data *first_predicate;
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extern struct pred_data *lookup_predicate (const char *);
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extern void add_predicate (struct pred_data *);
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#define FOR_ALL_PREDICATES(p) for (p = first_predicate; p; p = p->next)
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/* This callback will be invoked whenever an rtl include directive is
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processed. To be used for creation of the dependency file. */
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extern void (*include_callback) (const char *);
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#endif /* GCC_GENSUPPORT_H */
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