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| author | chrbr <chrbr@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-08-22 14:38:16 +0000 |
|---|---|---|
| committer | chrbr <chrbr@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-08-22 14:38:16 +0000 |
| commit | 19da70e088b9cf8012cacc0c5aa7a2e1e7eb9e03 (patch) | |
| tree | e4a372adecd095b7b82017b726220ef5440be287 /gcc/simplify-rtx.c | |
| parent | e9b7f2f6c93c4970ed58fce767725afa1193ad13 (diff) | |
| download | gcc-19da70e088b9cf8012cacc0c5aa7a2e1e7eb9e03.tar.gz | |
fixed -ffinite-math-only A-A missing optimisation
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@127705 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/simplify-rtx.c')
| -rw-r--r-- | gcc/simplify-rtx.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 1acb34c110d..d9cf023c7c2 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -1769,14 +1769,10 @@ simplify_binary_operation_1 (enum rtx_code code, enum machine_mode mode, case MINUS: /* We can't assume x-x is 0 even with non-IEEE floating point, but since it is zero except in very strange circumstances, we - will treat it as zero with -funsafe-math-optimizations and - -ffinite-math-only. */ + will treat it as zero with -ffinite-math-only. */ if (rtx_equal_p (trueop0, trueop1) && ! side_effects_p (op0) - && (! FLOAT_MODE_P (mode) - || (flag_unsafe_math_optimizations - && !HONOR_NANS (mode) - && !HONOR_INFINITIES (mode)))) + && (!FLOAT_MODE_P (mode) || !HONOR_NANS (mode))) return CONST0_RTX (mode); /* Change subtraction from zero into negation. (0 - x) is the |