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| author | Bruno Cardoso Lopes <bruno.cardoso@gmail.com> | 2011-09-19 23:36:50 +0000 |
|---|---|---|
| committer | Bruno Cardoso Lopes <bruno.cardoso@gmail.com> | 2011-09-19 23:36:50 +0000 |
| commit | 97136c922ec4b492584cb91c1fc1cdcb40983ecf (patch) | |
| tree | d62cd3734172a35fe08fa44367dafddb238b18f6 /test | |
| parent | 9c6712721c114f8e67b9a6b3cb1dd5d18b4cb435 (diff) | |
| download | external_llvm-97136c922ec4b492584cb91c1fc1cdcb40983ecf.zip external_llvm-97136c922ec4b492584cb91c1fc1cdcb40983ecf.tar.gz external_llvm-97136c922ec4b492584cb91c1fc1cdcb40983ecf.tar.bz2 | |
Based on the small opt Zvi's patch was trying to achieve, eliminate
128-bit undef subvector insertion into a 256-bit vector
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140097 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/avx-vinsertf128.ll | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/test/CodeGen/X86/avx-vinsertf128.ll b/test/CodeGen/X86/avx-vinsertf128.ll index a6f2585..8813a7f 100644 --- a/test/CodeGen/X86/avx-vinsertf128.ll +++ b/test/CodeGen/X86/avx-vinsertf128.ll @@ -36,3 +36,11 @@ allocas: store <4 x i32> %blendAsInt.i503, <4 x i32>* undef, align 4 ret void } + +; CHECK: _C +; CHECK-NOT: vinsertf128 $1 +define <4 x i32> @C(<4 x i32> %v1) nounwind readonly { + %1 = shufflevector <4 x i32> %v1, <4 x i32> undef, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7> + %2 = shufflevector <8 x i32> %1, <8 x i32> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 3> + ret <4 x i32> %2 +} |