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| author | Paolo Bonzini <bonzini@gnu.org> | 2009-06-28 17:03:03 +0000 |
|---|---|---|
| committer | Paolo Bonzini <bonzini@gcc.gnu.org> | 2009-06-28 17:03:03 +0000 |
| commit | 45475a3fb2c32ca082c07e633b2ded9ead70177e (patch) | |
| tree | 6cb46c8b1432e5b2682ebbe1c480966ef11ded79 /gcc/dojump.c | |
| parent | 495499daead6ed7050db2af715fabd4f472595cd (diff) | |
| download | gcc-45475a3fb2c32ca082c07e633b2ded9ead70177e.zip gcc-45475a3fb2c32ca082c07e633b2ded9ead70177e.tar.gz gcc-45475a3fb2c32ca082c07e633b2ded9ead70177e.tar.bz2 | |
dojump.c (do_compare_rtx_and_jump): Try swapping the condition for floating point modes.
2009-06-28 Paolo Bonzini <bonzini@gnu.org>
* dojump.c (do_compare_rtx_and_jump): Try swapping the
condition for floating point modes.
* expmed.c (emit_store_flag_1): Move here a bigger part
of emit_store_flag.
(emit_store_flag): Try swapping the condition for floating point
modes.
* optabs.c (emit_cmp_and_jump_insns): Cope with constant op0 better.
From-SVN: r149033
Diffstat (limited to 'gcc/dojump.c')
| -rw-r--r-- | gcc/dojump.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/gcc/dojump.c b/gcc/dojump.c index 131aaed..3685ff5 100644 --- a/gcc/dojump.c +++ b/gcc/dojump.c @@ -920,16 +920,27 @@ do_compare_rtx_and_jump (rtx op0, rtx op1, enum rtx_code code, int unsignedp, { if (GET_MODE_CLASS (mode) == MODE_FLOAT && ! can_compare_p (code, mode, ccp_jump) + && can_compare_p (swap_condition (code), mode, ccp_jump)) + { + rtx tmp; + code = swap_condition (code); + tmp = op0; + op0 = op1; + op1 = tmp; + } + + else if (GET_MODE_CLASS (mode) == MODE_FLOAT + && ! can_compare_p (code, mode, ccp_jump) - /* Never split ORDERED and UNORDERED. These must be implemented. */ - && (code != ORDERED && code != UNORDERED) + /* Never split ORDERED and UNORDERED. These must be implemented. */ + && (code != ORDERED && code != UNORDERED) - /* Split a floating-point comparison if we can jump on other - conditions... */ - && (have_insn_for (COMPARE, mode) + /* Split a floating-point comparison if we can jump on other + conditions... */ + && (have_insn_for (COMPARE, mode) - /* ... or if there is no libcall for it. */ - || code_to_optab[code] == NULL)) + /* ... or if there is no libcall for it. */ + || code_to_optab[code] == NULL)) { enum rtx_code first_code; bool and_them = split_comparison (code, mode, &first_code, &code); |