diff options
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 2 | ||||
| -rw-r--r-- | llvm/test/CodeGen/X86/vector-shuffle-128-v8.ll | 18 |
2 files changed, 19 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 2ef1a6925b6..d85ac5e55e4 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -7449,7 +7449,7 @@ static SDValue lowerV8I16SingleInputVectorShuffle( Input - SourceOffset; // We have to swap the uses in our half mask in one sweep. for (int &M : HalfMask) - if (M == SourceHalfMask[Input - SourceOffset]) + if (M == SourceHalfMask[Input - SourceOffset] + SourceOffset) M = Input; else if (M == Input) M = SourceHalfMask[Input - SourceOffset] + SourceOffset; diff --git a/llvm/test/CodeGen/X86/vector-shuffle-128-v8.ll b/llvm/test/CodeGen/X86/vector-shuffle-128-v8.ll index 6ca4857e42e..5c6a4dbaa4b 100644 --- a/llvm/test/CodeGen/X86/vector-shuffle-128-v8.ll +++ b/llvm/test/CodeGen/X86/vector-shuffle-128-v8.ll @@ -220,6 +220,24 @@ define <8 x i16> @shuffle_v8i16_26401375(<8 x i16> %a, <8 x i16> %b) { ret <8 x i16> %shuffle } +define <8 x i16> @shuffle_v8i16_66751643(<8 x i16> %a, <8 x i16> %b) { +; SSE2-LABEL: @shuffle_v8i16_66751643 +; SSE2: # BB#0: +; SSE2-NEXT: pshuflw {{.*}} # xmm0 = xmm0[3,1,2,3,4,5,6,7] +; SSE2-NEXT: pshufhw {{.*}} # xmm0 = xmm0[0,1,2,3,4,6,5,7] +; SSE2-NEXT: pshufd {{.*}} # xmm0 = xmm0[2,3,2,0] +; SSE2-NEXT: pshuflw {{.*}} # xmm0 = xmm0[1,1,3,2,4,5,6,7] +; SSE2-NEXT: pshufhw {{.*}} # xmm0 = xmm0[0,1,2,3,7,5,4,6] +; SSE2-NEXT: retq +; +; SSSE3-LABEL: @shuffle_v8i16_66751643 +; SSSE3: # BB#0: +; SSSE3-NEXT: pshufb {{.*}} # xmm0 = xmm0[12,13,12,13,14,15,10,11,2,3,12,13,8,9,6,7] +; SSSE3-NEXT: retq + %shuffle = shufflevector <8 x i16> %a, <8 x i16> %b, <8 x i32> <i32 6, i32 6, i32 7, i32 5, i32 1, i32 6, i32 4, i32 3> + 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: |
