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| author | Craig Topper <craig.topper@gmail.com> | 2012-06-20 05:39:26 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@gmail.com> | 2012-06-20 05:39:26 +0000 |
| commit | 703c38bf584b39275ba517982677491607f46d20 (patch) | |
| tree | 0cc0bda0b2e5930f460d25d3ae3fd76fd4c690ce /test/CodeGen/X86/avx-shuffle.ll | |
| parent | 37aa33bc11c01a7142bfa2428a5a4d219b07b6c3 (diff) | |
| download | llvm-703c38bf584b39275ba517982677491607f46d20.tar.gz llvm-703c38bf584b39275ba517982677491607f46d20.tar.bz2 llvm-703c38bf584b39275ba517982677491607f46d20.tar.xz | |
Don't insert 128-bit UNDEF into 256-bit vectors. Just keep the 256-bit vector. Original patch by Elena Demikhovsky. Tweaked by me to allow possibility of covering more cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158792 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/avx-shuffle.ll')
| -rw-r--r-- | test/CodeGen/X86/avx-shuffle.ll | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/test/CodeGen/X86/avx-shuffle.ll b/test/CodeGen/X86/avx-shuffle.ll index f1debffd11..edfe4ab6c7 100644 --- a/test/CodeGen/X86/avx-shuffle.ll +++ b/test/CodeGen/X86/avx-shuffle.ll @@ -219,3 +219,11 @@ define <16 x i16> @narrow(<16 x i16> %a) nounwind alwaysinline { %t = shufflevector <16 x i16> %a, <16 x i16> undef, <16 x i32> <i32 2, i32 3, i32 undef, i32 1, i32 6, i32 7, i32 4, i32 5, i32 10, i32 11, i32 8, i32 undef, i32 14, i32 15, i32 undef, i32 undef> ret <16 x i16> %t } + +;CHECK: test17 +;CHECK-NOT: vinsertf128 +;CHECK: ret +define <8 x float> @test17(<4 x float> %y) { + %x = shufflevector <4 x float> %y, <4 x float> undef, <8 x i32> <i32 undef, i32 1, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef> + ret <8 x float> %x +} |