diff options
Diffstat (limited to 'gcc/genoutput.c')
| -rw-r--r-- | gcc/genoutput.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/gcc/genoutput.c b/gcc/genoutput.c index bae2381..4e4e1ed 100644 --- a/gcc/genoutput.c +++ b/gcc/genoutput.c @@ -1,6 +1,7 @@ /* Generate code from to output assembler insns as recognized from rtl. Copyright (C) 1987, 1988, 1992, 1994, 1995, 1997, 1998, 1999, 2000, 2002, - 2003, 2004, 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. + 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2012 + Free Software Foundation, Inc. This file is part of GCC. @@ -171,9 +172,16 @@ struct data struct operand_data operand[MAX_MAX_OPERANDS]; }; +/* A dummy insn, for CODE_FOR_nothing. */ +static struct data nothing; + /* This variable points to the first link in the insn chain. */ +static struct data *idata = ¬hing; + +/* This variable points to the end of the insn chain. This is where + everything relevant from the machien description is appended to. */ +static struct data **idata_end = ¬hing.next; -static struct data *idata, **idata_end = &idata; static void output_prologue (void); static void output_operand_data (void); @@ -987,6 +995,14 @@ gen_split (rtx split, int lineno) place_operands (d); } +static void +init_insn_for_nothing (void) +{ + memset (¬hing, 0, sizeof (nothing)); + nothing.name = "*placeholder_for_nothing"; + nothing.filename = "<internal>"; +} + extern int main (int, char **); int @@ -996,11 +1012,12 @@ main (int argc, char **argv) progname = "genoutput"; + init_insn_for_nothing (); + if (!init_rtx_reader_args (argc, argv)) return (FATAL_EXIT_CODE); output_prologue (); - next_code_number = 0; next_index_number = 0; /* Read the machine description. */ |