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| author | Shuxin Yang <shuxin.llvm@gmail.com> | 2013-03-25 20:43:41 +0000 |
|---|---|---|
| committer | Shuxin Yang <shuxin.llvm@gmail.com> | 2013-03-25 20:43:41 +0000 |
| commit | 389ed4b8f74e02cf36b2b1a9e5f346a32150e0b6 (patch) | |
| tree | 0f7e95e301963cf162ce6493314a925a01d57b35 /llvm/test/Transforms/InstCombine/fast-math.ll | |
| parent | f60f2fb14230f0f03dea217682df81e028a1264c (diff) | |
| download | bcm5719-llvm-389ed4b8f74e02cf36b2b1a9e5f346a32150e0b6.tar.gz bcm5719-llvm-389ed4b8f74e02cf36b2b1a9e5f346a32150e0b6.zip | |
Fix a bug in fast-math fadd/fsub simplification.
The problem is that the code mistakenly took for granted that following constructor
is able to create an APFloat from a *SIGNED* integer:
APFloat::APFloat(const fltSemantics &ourSemantics, integerPart value)
rdar://13486998
llvm-svn: 177906
Diffstat (limited to 'llvm/test/Transforms/InstCombine/fast-math.ll')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/fast-math.ll | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/fast-math.ll b/llvm/test/Transforms/InstCombine/fast-math.ll index 47f1ec48046..edcbcc71dfb 100644 --- a/llvm/test/Transforms/InstCombine/fast-math.ll +++ b/llvm/test/Transforms/InstCombine/fast-math.ll @@ -130,6 +130,16 @@ define double @fail2(double %f1, double %f2) { ; CHECK: ret } +; c1 * x - x => (c1 - 1.0) * x +define float @fold13(float %x) { + %mul = fmul fast float %x, 7.000000e+00 + %sub = fsub fast float %mul, %x + ret float %sub +; CHECK: fold13 +; CHECK: fmul fast float %x, 6.000000e+00 +; CHECK: ret +} + ; ========================================================================= ; ; Testing-cases about fmul begin |
