diff options
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 18 | ||||
| -rw-r--r-- | llvm/test/CodeGen/X86/2009-06-06-ConcatVectors.ll | 8 |
2 files changed, 9 insertions, 17 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index 7c460ed013c..5ae183e2fa0 100644 --- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -2460,23 +2460,7 @@ void SelectionDAGLegalize::ExpandNode(SDNode *Node, Results.push_back(ExpandExtractFromVectorThroughStack(SDValue(Node, 0))); break; case ISD::CONCAT_VECTORS: { - // Use extract/insert/build vector for now. We might try to be - // more clever later. - SmallVector<SDValue, 8> Ops; - unsigned NumOperands = Node->getNumOperands(); - for (unsigned i=0; i < NumOperands; ++i) { - SDValue SubOp = Node->getOperand(i); - MVT VVT = SubOp.getNode()->getValueType(0); - MVT EltVT = VVT.getVectorElementType(); - unsigned NumSubElem = VVT.getVectorNumElements(); - for (unsigned j=0; j < NumSubElem; ++j) { - Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, SubOp, - DAG.getIntPtrConstant(j))); - } - } - Tmp1 = DAG.getNode(ISD::BUILD_VECTOR, dl, Node->getValueType(0), - &Ops[0], Ops.size()); - Results.push_back(Tmp1); + Results.push_back(ExpandVectorBuildThroughStack(Node)); break; } case ISD::SCALAR_TO_VECTOR: diff --git a/llvm/test/CodeGen/X86/2009-06-06-ConcatVectors.ll b/llvm/test/CodeGen/X86/2009-06-06-ConcatVectors.ll new file mode 100644 index 00000000000..a46fd1a2e76 --- /dev/null +++ b/llvm/test/CodeGen/X86/2009-06-06-ConcatVectors.ll @@ -0,0 +1,8 @@ +; RUN: llvm-as < %s | llc + +define <2 x i64> @_mm_movpi64_pi64(<1 x i64> %a, <1 x i64> %b) nounwind readnone { +entry: + %0 = shufflevector <1 x i64> %a, <1 x i64> %b, <2 x i32> <i32 0, i32 1> + ret <2 x i64> %0 +} + |
