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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2016-02-29 12:18:25 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2016-02-29 12:18:25 +0000 |
| commit | 6bb15021b37cd79e0fa8c361880756f90d9b5ba3 (patch) | |
| tree | 2ba8919fac8941e173faa4e5e114487e1371562b /llvm/test/Transforms | |
| parent | 76d76bb006c8b6305357f9797faf52a063ce38a9 (diff) | |
| download | bcm5719-llvm-6bb15021b37cd79e0fa8c361880756f90d9b5ba3.tar.gz bcm5719-llvm-6bb15021b37cd79e0fa8c361880756f90d9b5ba3.zip | |
[InstSimplify] Restore fsub 0.0, (fsub 0.0, X) ==> X optzn
I accidentally removed this in r262212 but there was no test coverage to
detect it.
llvm-svn: 262215
Diffstat (limited to 'llvm/test/Transforms')
| -rw-r--r-- | llvm/test/Transforms/InstSimplify/fast-math.ll | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstSimplify/fast-math.ll b/llvm/test/Transforms/InstSimplify/fast-math.ll index 90532fa5db8..c499af33f52 100644 --- a/llvm/test/Transforms/InstSimplify/fast-math.ll +++ b/llvm/test/Transforms/InstSimplify/fast-math.ll @@ -91,6 +91,16 @@ define float @fsub_x_x(float %a) { ret float %ret } +; fsub nsz 0.0, (fsub 0.0, X) ==> X +; CHECK-LABEL: @fsub_0_0_x( +define float @fsub_0_0_x(float %a) { + %t1 = fsub float 0.0, %a + %ret = fsub nsz float 0.0, %t1 + +; CHECK: ret float %a + ret float %ret +} + ; fadd nsz X, 0 ==> X ; CHECK-LABEL: @nofold_fadd_x_0( define float @nofold_fadd_x_0(float %a) { |
