diff options
| author | dougkwan <dougkwan@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-10-05 09:08:46 +0000 |
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| committer | dougkwan <dougkwan@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-10-05 09:08:46 +0000 |
| commit | 359a1bd5dd6f78bfa5d870ea9103d96947d7496b (patch) | |
| tree | 4c9459bd6788b618c7453a190aaeecfcf02a4bf2 /gcc/combine.c | |
| parent | 4e2b0510e06a67be02879f1fb9bde07e7b1b1e0b (diff) | |
| download | gcc-359a1bd5dd6f78bfa5d870ea9103d96947d7496b.tar.gz | |
2009-10-05 Doug Kwan <dougkwan@google.com>
PR rtl-optimization/41574
Index: combine.c (distribute_and_simplify_rtx): Quit if RTX mode is
floating point and we are not doing unsafe math optimizations.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@152443 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 35ab576d612..64cf99272da 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -8811,6 +8811,12 @@ distribute_and_simplify_rtx (rtx x, int n) enum rtx_code outer_code, inner_code; rtx decomposed, distributed, inner_op0, inner_op1, new_op0, new_op1, tmp; + /* Distributivity is not true for floating point as it can change the + value. So we don't do it unless -funsafe-math-optimizations. */ + if (FLOAT_MODE_P (GET_MODE (x)) + && ! flag_unsafe_math_optimizations) + return NULL_RTX; + decomposed = XEXP (x, n); if (!ARITHMETIC_P (decomposed)) return NULL_RTX; |