diff options
Diffstat (limited to 'llvm/test/CodeGen/X86/vector-shuffle-128-unpck.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/vector-shuffle-128-unpck.ll | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/vector-shuffle-128-unpck.ll b/llvm/test/CodeGen/X86/vector-shuffle-128-unpck.ll index 47d9c41e019..58e4c10232f 100644 --- a/llvm/test/CodeGen/X86/vector-shuffle-128-unpck.ll +++ b/llvm/test/CodeGen/X86/vector-shuffle-128-unpck.ll @@ -221,3 +221,15 @@ define <16 x i8> @unpckl_unary_extracted_v32i8(<32 x i8> %x) { ret <16 x i8> %r } +; This would infinite loop because we did not recognize the unpack shuffle mask in commuted form. + +define <8 x i32> @extract_unpckl_v8i32(<8 x i32> %a) { +; ALL-LABEL: extract_unpckl_v8i32: +; ALL: # %bb.0: +; ALL-NEXT: vextractf128 $1, %ymm0, %xmm1 +; ALL-NEXT: vunpcklps {{.*#+}} xmm0 = xmm1[0],xmm0[0],xmm1[1],xmm0[1] +; ALL-NEXT: retq + %shuffle = shufflevector <8 x i32> %a, <8 x i32> undef, <8 x i32> <i32 4, i32 undef, i32 5, i32 1, i32 undef, i32 undef, i32 undef, i32 undef> + ret <8 x i32> %shuffle +} + |
