diff options
| -rw-r--r-- | include/llvm/CodeGen/SelectionDAGNodes.h | 7 | ||||
| -rw-r--r-- | test/CodeGen/X86/vec_shuffle-36.ll | 17 |
2 files changed, 18 insertions, 6 deletions
diff --git a/include/llvm/CodeGen/SelectionDAGNodes.h b/include/llvm/CodeGen/SelectionDAGNodes.h index 9a426a0477..9066913620 100644 --- a/include/llvm/CodeGen/SelectionDAGNodes.h +++ b/include/llvm/CodeGen/SelectionDAGNodes.h @@ -1764,7 +1764,12 @@ public: bool isSplat() const { return isSplatMask(Mask, getValueType(0)); } int getSplatIndex() const { assert(isSplat() && "Cannot get splat index for non-splat!"); - return Mask[0]; + EVT VT = getValueType(0); + for (unsigned i = 0, e = VT.getVectorNumElements(); i != e; ++i) { + if (Mask[i] != -1) + return Mask[i]; + } + return -1; } static bool isSplatMask(const int *Mask, EVT VT); diff --git a/test/CodeGen/X86/vec_shuffle-36.ll b/test/CodeGen/X86/vec_shuffle-36.ll index 8a93a7eeee..1ea37c881e 100644 --- a/test/CodeGen/X86/vec_shuffle-36.ll +++ b/test/CodeGen/X86/vec_shuffle-36.ll @@ -1,9 +1,16 @@ -; RUN: llc < %s -march=x86 -mattr=sse41 -o %t -; RUN: grep pshufb %t | count 1 - +; RUN: llc < %s -march=x86-64 -mattr=sse41 | FileCheck %s define <8 x i16> @shuf6(<8 x i16> %T0, <8 x i16> %T1) nounwind readnone { +; CHECK: pshufb +; CHECK-NOT: pshufb +; CHECK: ret entry: - %tmp9 = shufflevector <8 x i16> %T0, <8 x i16> %T1, <8 x i32> < i32 3, i32 2, i32 0, i32 2, i32 1, i32 5, i32 6 , i32 undef > - ret <8 x i16> %tmp9 + %tmp9 = shufflevector <8 x i16> %T0, <8 x i16> %T1, <8 x i32> < i32 3, i32 2, i32 0, i32 2, i32 1, i32 5, i32 6 , i32 undef > + ret <8 x i16> %tmp9 } + +define <8 x i16> @shuf7(<8 x i16> %t0) { +; CHECK: pshufd + %tmp10 = shufflevector <8 x i16> %t0, <8 x i16> undef, <8 x i32> < i32 undef, i32 2, i32 2, i32 2, i32 2, i32 2, i32 undef, i32 undef > + ret <8 x i16> %tmp10 +}
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