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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/gensupport.h
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diff --git a/gcc/gensupport.h b/gcc/gensupport.h
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+/* Declarations for rtx-reader support for gen* routines.
+ Copyright (C) 2000, 2002, 2003, 2004, 2007, 2008, 2010
+ 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 3, 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 COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_GENSUPPORT_H
+#define GCC_GENSUPPORT_H
+
+struct obstack;
+extern struct obstack *rtl_obstack;
+
+extern bool init_rtx_reader_args_cb (int, char **, bool (*)(const char *));
+extern bool init_rtx_reader_args (int, char **);
+extern rtx read_md_rtx (int *, int *);
+
+/* 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 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 *);
+
+/* Add an entry to the table of conditions. Used by genconditions and
+ by read-rtl.c. */
+extern void add_c_test (const char *, int);
+
+/* This structure is used internally by gensupport.c and genconditions.c. */
+struct c_test
+{
+ const char *expr;
+ int value;
+};
+
+#ifdef __HASHTAB_H__
+extern hashval_t hash_c_test (const void *);
+extern int cmp_c_test (const void *, const void *);
+extern void traverse_c_tests (htab_trav, void *);
+#endif
+
+/* 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 */
+ int num_codes; /* number of codes accepted */
+ 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_code (struct pred_data *, enum rtx_code);
+extern void add_predicate (struct pred_data *);
+
+#define FOR_ALL_PREDICATES(p) for (p = first_predicate; p; p = p->next)
+
+#endif /* GCC_GENSUPPORT_H */