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Use MOVHLPS node instead of matching using movhlps and movhlps_undef pattern fragments

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112644 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bruno Cardoso Lopes 2010-08-31 21:38:49 +00:00
parent b5d84d13bc
commit 7ff30bb1a5
1 changed files with 21 additions and 0 deletions
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21
lib/Target/X86/X86ISelLowering.cpp
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@ -2585,6 +2585,7 @@ static bool isTargetShuffle(unsigned Opcode) {
case X86ISD::SHUFPD:
case X86ISD::SHUFPS:
case X86ISD::MOVLHPS:
case X86ISD::MOVHLPS:
case X86ISD::MOVSS:
case X86ISD::MOVSD:
case X86ISD::PUNPCKLDQ:
@ -2624,6 +2625,7 @@ static SDValue getTargetShuffleNode(unsigned Opc, DebugLoc dl, EVT VT,
default: llvm_unreachable("Unknown x86 shuffle node");
case X86ISD::MOVLHPS:
case X86ISD::MOVLHPD:
case X86ISD::MOVHLPS:
case X86ISD::MOVSS:
case X86ISD::MOVSD:
case X86ISD::PUNPCKLDQ:
@ -5021,6 +5023,22 @@ SDValue getMOVLowToHigh(SDValue &Op, DebugLoc &dl, SelectionDAG &DAG,
return getTargetShuffleNode(X86ISD::MOVLHPS, dl, VT, V1, V2, DAG);
}
static
SDValue getMOVHighToLow(SDValue &Op, DebugLoc &dl, SelectionDAG &DAG) {
SDValue V1 = Op.getOperand(0);
SDValue V2 = Op.getOperand(1);
EVT VT = Op.getValueType();
assert((VT == MVT::v4i32 || VT == MVT::v4f32) &&
"unsupported shuffle type");
if (V2.getOpcode() == ISD::UNDEF)
V2 = V1;
// v4i32 or v4f32
return getTargetShuffleNode(X86ISD::MOVHLPS, dl, VT, V1, V2, DAG);
}
SDValue
X86TargetLowering::LowerVECTOR_SHUFFLE(SDValue Op, SelectionDAG &DAG) const {
ShuffleVectorSDNode *SVOp = cast<ShuffleVectorSDNode>(Op);
@ -5131,6 +5149,9 @@ X86TargetLowering::LowerVECTOR_SHUFFLE(SDValue Op, SelectionDAG &DAG) const {
if (X86::isMOVLHPSMask(SVOp) && !X86::isUNPCKLMask(SVOp))
return getMOVLowToHigh(Op, dl, DAG, HasSSE2);
if (X86::isMOVHLPSMask(SVOp))
return getMOVHighToLow(Op, dl, DAG);
if (X86::isMOVSHDUPMask(SVOp) ||
X86::isMOVSLDUPMask(SVOp) ||
X86::isMOVHLPSMask(SVOp) ||