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author | Ben Cheng <bccheng@google.com> | 2013-03-28 11:14:20 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2013-03-28 12:40:33 -0700 |
commit | af0c51ac87ab2a87caa03fa108f0d164987a2764 (patch) | |
tree | 4b8b470f7c5b69642fdab8d0aa1fbc148d02196b /gcc-4.8/gcc/gensupport.h | |
parent | d87cae247d39ebf4f5a6bf25c932a14d2fdb9384 (diff) | |
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[GCC 4.8] Initial check-in of GCC 4.8.0
Change-Id: I0719d8a6d0f69b367a6ab6f10eb75622dbf12771
Diffstat (limited to 'gcc-4.8/gcc/gensupport.h')
-rw-r--r-- | gcc-4.8/gcc/gensupport.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/gcc-4.8/gcc/gensupport.h b/gcc-4.8/gcc/gensupport.h new file mode 100644 index 000000000..ff79e3aa5 --- /dev/null +++ b/gcc-4.8/gcc/gensupport.h @@ -0,0 +1,113 @@ +/* Declarations for rtx-reader support for gen* routines. + Copyright (C) 2000-2013 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) + +struct pattern_stats +{ + /* The largest match_operand, match_operator or match_parallel + number found. */ + int max_opno; + + /* The largest match_dup, match_op_dup or match_par_dup number found. */ + int max_dup_opno; + + /* The largest match_scratch number found. */ + int max_scratch_opno; + + /* The number of times match_dup, match_op_dup or match_par_dup appears + in the pattern. */ + int num_dups; + + /* The number of rtx arguments to the generator function. */ + int num_generator_args; + + /* The number of rtx operands in an insn. */ + int num_insn_operands; + + /* The number of operand variables that are needed. */ + int num_operand_vars; +}; + +extern void get_pattern_stats (struct pattern_stats *ranges, rtvec vec); + +#endif /* GCC_GENSUPPORT_H */ |