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| author | Owen Anderson <resistor@mac.com> | 2013-07-30 23:53:17 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2013-07-30 23:53:17 +0000 |
| commit | 605b3427a9423c1e291a9e9ab94fd7202ca864ae (patch) | |
| tree | 75919c6202ae38d5fa9d39d591c6141d52915d7d /test/Transforms/InstCombine/fneg-ext.ll | |
| parent | b0bee810e7f980ccb4c0ee56aed948716a51d0ab (diff) | |
| download | llvm-605b3427a9423c1e291a9e9ab94fd7202ca864ae.tar.gz llvm-605b3427a9423c1e291a9e9ab94fd7202ca864ae.tar.bz2 llvm-605b3427a9423c1e291a9e9ab94fd7202ca864ae.tar.xz | |
Preserve fast-math flags when folding (fsub x, (fneg y)) to (fadd x, y).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187462 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/InstCombine/fneg-ext.ll')
| -rw-r--r-- | test/Transforms/InstCombine/fneg-ext.ll | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/fneg-ext.ll b/test/Transforms/InstCombine/fneg-ext.ll index 49ad232526..922d26a465 100644 --- a/test/Transforms/InstCombine/fneg-ext.ll +++ b/test/Transforms/InstCombine/fneg-ext.ll @@ -10,3 +10,14 @@ define double @test1(float %a, double %b) nounwind readnone ssp uwtable { %3 = fsub double %b, %2 ret double %3 } + +; CHECK: test2 +define double @test2(float %a, double %b) nounwind readnone ssp uwtable { +; CHECK-NOT: fsub +; CHECK: fpext +; CHECK: fadd fast + %1 = fsub float -0.000000e+00, %a + %2 = fpext float %1 to double + %3 = fsub fast double %b, %2 + ret double %3 +} |