diff options
| author | David Ung <davidu@mips.com> | 2010-05-03 20:43:19 +0000 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 2010-05-03 13:43:19 -0700 |
| commit | 67e679795375b25b83c4efd6ef6028ab0f59343c (patch) | |
| tree | 02a65c73b7cecdd86eda43be32cc1c778ebfc653 /gcc | |
| parent | 35ad90d5103613ec6a4839bfea1d790ecb671469 (diff) | |
| download | gcc-67e679795375b25b83c4efd6ef6028ab0f59343c.zip gcc-67e679795375b25b83c4efd6ef6028ab0f59343c.tar.gz gcc-67e679795375b25b83c4efd6ef6028ab0f59343c.tar.bz2 | |
mips.c (mips_output_division): When GENERATE_DIVIDE_TRAPS...
* config/mips/mips.c (mips_output_division): When GENERATE_DIVIDE_TRAPS,
emit the trap instruction before the divide for TUNE_74K.
Co-Authored-By: James E. Wilson <wilson@codesourcery.com>
From-SVN: r159004
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/mips/mips.c | 17 |
2 files changed, 18 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 727f897..a3b1c94 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2010-05-03 David Ung <davidu@mips.com> + James E. Wilson <wilson@codesourcery.com> + + * config/mip/mips.c (mips_output_division): When GENERATE_DIVIDE_TRAPS, + emit the trap instruction before the divide for TUNE_74K. + 2010-05-03 Steven Bosscher <steven@gcc.gnu.org> * doc/tm.texi (defmac SMALL_REGISTER_CLASSES): Remove. diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c index e246981..345645d 100644 --- a/gcc/config/mips/mips.c +++ b/gcc/config/mips/mips.c @@ -1,6 +1,6 @@ /* Subroutines used for MIPS code generation. Copyright (C) 1989, 1990, 1991, 1993, 1994, 1995, 1996, 1997, 1998, - 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 + 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. Contributed by A. Lichnewsky, lich@inria.inria.fr. Changes by Michael Meissner, meissner@osf.org. @@ -11817,10 +11817,17 @@ mips_output_division (const char *division, rtx *operands) s = "bnez\t%2,1f\n\tbreak\t7\n1:"; } else if (GENERATE_DIVIDE_TRAPS) - { - output_asm_insn (s, operands); - s = "teq\t%2,%.,7"; - } + { + /* Avoid long replay penalty on load miss by putting the trap before + the divide. */ + if (TUNE_74K) + output_asm_insn ("teq\t%2,%.,7", operands); + else + { + output_asm_insn (s, operands); + s = "teq\t%2,%.,7"; + } + } else { output_asm_insn ("%(bne\t%2,%.,1f", operands); |