diff options
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 8 | ||||
| -rw-r--r-- | llvm/test/CodeGen/X86/vector-shuffle-128-v8.ll | 17 |
2 files changed, 21 insertions, 4 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index d85ac5e55e4..c62c2fd5f35 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -7546,10 +7546,10 @@ static SDValue lowerV8I16SingleInputVectorShuffle( // We also have to update the final source mask in this case because // it may need to undo the above swap. for (int &M : FinalSourceHalfMask) - if (M == (InputsFixed[0] ^ 1)) - M = InputsFixed[1]; - else if (M == InputsFixed[1]) - M = InputsFixed[0] ^ 1; + if (M == (InputsFixed[0] ^ 1) + SourceOffset) + M = InputsFixed[1] + SourceOffset; + else if (M == InputsFixed[1] + SourceOffset) + M = InputsFixed[0] ^ 1 + SourceOffset; InputsFixed[1] = InputsFixed[0] ^ 1; } diff --git a/llvm/test/CodeGen/X86/vector-shuffle-128-v8.ll b/llvm/test/CodeGen/X86/vector-shuffle-128-v8.ll index 5c6a4dbaa4b..5d0509f45ca 100644 --- a/llvm/test/CodeGen/X86/vector-shuffle-128-v8.ll +++ b/llvm/test/CodeGen/X86/vector-shuffle-128-v8.ll @@ -238,6 +238,23 @@ define <8 x i16> @shuffle_v8i16_66751643(<8 x i16> %a, <8 x i16> %b) { ret <8 x i16> %shuffle } +define <8 x i16> @shuffle_v8i16_60514754(<8 x i16> %a, <8 x i16> %b) { +; SSE2-LABEL: @shuffle_v8i16_60514754 +; SSE2: # BB#0: +; SSE2-NEXT: pshufhw {{.*}} # xmm0 = xmm0[0,1,2,3,6,5,4,7] +; SSE2-NEXT: pshufd {{.*}} # xmm0 = xmm0[0,2,2,3] +; SSE2-NEXT: pshuflw {{.*}} # xmm0 = xmm0[2,0,3,1,4,5,6,7] +; SSE2-NEXT: pshufhw {{.*}} # xmm0 = xmm0[0,1,2,3,6,7,5,6] +; SSE2-NEXT: retq +; +; SSSE3-LABEL: @shuffle_v8i16_60514754 +; SSSE3: # BB#0: +; SSSE3-NEXT: pshufb {{.*}} # xmm0 = xmm0[12,13,0,1,10,11,2,3,8,9,14,15,10,11,8,9] +; SSSE3-NEXT: retq + %shuffle = shufflevector <8 x i16> %a, <8 x i16> undef, <8 x i32> <i32 6, i32 0, i32 5, i32 1, i32 4, i32 7, i32 5, i32 4> + ret <8 x i16> %shuffle +} + define <8 x i16> @shuffle_v8i16_00444444(<8 x i16> %a, <8 x i16> %b) { ; SSE2-LABEL: @shuffle_v8i16_00444444 ; SSE2: # BB#0: |
