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| author | Jim Grosbach <grosbach@apple.com> | 2013-04-30 20:43:52 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2013-04-30 20:43:52 +0000 |
| commit | 6548096a2e2b34e685680e6e1055b8e407c2c243 (patch) | |
| tree | 01207a2ecc461f37c2a8e790c952afb18f27d9ee /test/Transforms/BBVectorize | |
| parent | b0caf5ff64962fd9ff2977d7c31d6bb88fb8a8a5 (diff) | |
| download | external_llvm-6548096a2e2b34e685680e6e1055b8e407c2c243.zip external_llvm-6548096a2e2b34e685680e6e1055b8e407c2c243.tar.gz external_llvm-6548096a2e2b34e685680e6e1055b8e407c2c243.tar.bz2 | |
InstCombine: Fold more shuffles of shuffles.
Always fold a shuffle-of-shuffle into a single shuffle when there's only one
input vector in the first place. Continue to be more conservative when there's
multiple inputs.
rdar://13402653
PR15866
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180802 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/BBVectorize')
| -rw-r--r-- | test/Transforms/BBVectorize/simple.ll | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/test/Transforms/BBVectorize/simple.ll b/test/Transforms/BBVectorize/simple.ll index a447908..a22ad15 100644 --- a/test/Transforms/BBVectorize/simple.ll +++ b/test/Transforms/BBVectorize/simple.ll @@ -139,11 +139,10 @@ define <8 x i8> @test6(<8 x i8> %A1, <8 x i8> %A2, <8 x i8> %B1, <8 x i8> %B2) { ; CHECK: %Z1 = add <16 x i8> %Y1, %X1.v.i1 %Q1 = shufflevector <8 x i8> %Z1, <8 x i8> %Z2, <8 x i32> <i32 15, i32 8, i32 6, i32 1, i32 13, i32 10, i32 4, i32 3> %Q2 = shufflevector <8 x i8> %Z2, <8 x i8> %Z2, <8 x i32> <i32 6, i32 7, i32 0, i32 1, i32 2, i32 4, i32 4, i32 1> -; CHECK: %Q1.v.i1 = shufflevector <16 x i8> %Z1, <16 x i8> undef, <16 x i32> <i32 8, i32 undef, i32 10, i32 undef, i32 undef, i32 13, i32 undef, i32 15, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef> -; CHECK: %Q1 = shufflevector <16 x i8> %Z1, <16 x i8> %Q1.v.i1, <16 x i32> <i32 23, i32 16, i32 6, i32 1, i32 21, i32 18, i32 4, i32 3, i32 14, i32 15, i32 8, i32 9, i32 10, i32 12, i32 12, i32 9> - %R = mul <8 x i8> %Q1, %Q2 -; CHECK: %Q1.v.r1 = shufflevector <16 x i8> %Q1, <16 x i8> undef, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7> -; CHECK: %Q1.v.r2 = shufflevector <16 x i8> %Q1, <16 x i8> undef, <8 x i32> <i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15> + %R = mul <8 x i8> %Q1, %Q2 +; CHECK: %Q1.v.i1 = shufflevector <16 x i8> %Z1, <16 x i8> undef, <16 x i32> <i32 8, i32 undef, i32 10, i32 undef, i32 undef, i32 13, i32 undef, i32 15, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef> +; CHECK: %Q1.v.r1 = shufflevector <16 x i8> %Z1, <16 x i8> %Q1.v.i1, <8 x i32> <i32 23, i32 16, i32 6, i32 1, i32 21, i32 18, i32 4, i32 3> +; CHECK: %Q1.v.r2 = shufflevector <16 x i8> %Z1, <16 x i8> undef, <8 x i32> <i32 14, i32 15, i32 8, i32 9, i32 10, i32 12, i32 12, i32 9> ; CHECK: %R = mul <8 x i8> %Q1.v.r1, %Q1.v.r2 ret <8 x i8> %R ; CHECK: ret <8 x i8> %R |