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| author | Eli Friedman <eli.friedman@gmail.com> | 2011-09-15 01:14:29 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2011-09-15 01:14:29 +0000 |
| commit | 888bea0b952007b0121552666dd2415e1f352bbe (patch) | |
| tree | fe58061dea3d8732a0a2784148ad37f05f0174bc /llvm/test/Transforms | |
| parent | 88c1b77f7427c0dda49afac2ceba8fb81afc058c (diff) | |
| download | bcm5719-llvm-888bea0b952007b0121552666dd2415e1f352bbe.tar.gz bcm5719-llvm-888bea0b952007b0121552666dd2415e1f352bbe.zip | |
Make demanded-elt simplification for shufflevector slightly stronger. Spotted by inspection.
llvm-svn: 139768
Diffstat (limited to 'llvm/test/Transforms')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/vec_demanded_elts.ll | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/vec_demanded_elts.ll b/llvm/test/Transforms/InstCombine/vec_demanded_elts.ll index e0188fe91ae..cc63371eded 100644 --- a/llvm/test/Transforms/InstCombine/vec_demanded_elts.ll +++ b/llvm/test/Transforms/InstCombine/vec_demanded_elts.ll @@ -152,3 +152,14 @@ entry: ret <4 x i32> %0 } declare <4 x i32> @llvm.x86.sse41.pmovzxwd(<8 x i16>) nounwind readnone + +define <4 x float> @dead_shuffle_elt(<4 x float> %x, <2 x float> %y) nounwind { +entry: +; CHECK: define <4 x float> @dead_shuffle_elt +; CHECK: shufflevector <2 x float> %y, <2 x float> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef> + %shuffle.i = shufflevector <2 x float> %y, <2 x float> %y, <4 x i32> <i32 0, i32 1, i32 0, i32 1> + %shuffle9.i = shufflevector <4 x float> %x, <4 x float> %shuffle.i, <4 x i32> <i32 4, i32 5, i32 2, i32 3> + ret <4 x float> %shuffle9.i +} + + |
