diff options
Diffstat (limited to 'gcc/gensupport.c')
| -rw-r--r-- | gcc/gensupport.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/gcc/gensupport.c b/gcc/gensupport.c index e56291e..44443e2 100644 --- a/gcc/gensupport.c +++ b/gcc/gensupport.c @@ -1,6 +1,6 @@ /* Support routines for the various generation passes. Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, - 2010, Free Software Foundation, Inc. + 2010, 2012 Free Software Foundation, Inc. This file is part of GCC. @@ -38,6 +38,10 @@ int insn_elision = 1; static struct obstack obstack; struct obstack *rtl_obstack = &obstack; +/* Counter for patterns that generate code: define_insn, define_expand, + define_split, define_peephole, and define_peephole2. See read_md_rtx(). + Any define_insn_and_splits are already in separate queues so that the + insn and the splitter get a unique number also. */ static int sequence_num; static int predicable_default; @@ -1397,7 +1401,9 @@ init_rtx_reader_args_cb (int argc, char **argv, condition_table = htab_create (500, hash_c_test, cmp_c_test, NULL); init_predicate_table (); obstack_init (rtl_obstack); - sequence_num = 0; + + /* Start at 1, to make 0 available for CODE_FOR_nothing. */ + sequence_num = 1; read_md_files (argc, argv, parse_opt, rtx_handle_directive); @@ -1419,7 +1425,11 @@ init_rtx_reader_args (int argc, char **argv) return init_rtx_reader_args_cb (argc, argv, 0); } -/* The entry point for reading a single rtx from an md file. */ +/* The entry point for reading a single rtx from an md file. Return + the rtx, or NULL if the md file has been fully processed. + Return the line where the rtx was found in LINENO. + Return the number of code generating rtx'en read since the start + of the md file in SEQNR. */ rtx read_md_rtx (int *lineno, int *seqnr) |