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SelectScalarSSELoad should call CanBeFoldedBy as well.

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llvm-svn: 30973
This commit is contained in:
Evan Cheng 2006-10-16 06:34:55 +00:00
parent f872538d4b
commit c73547a71d
1 changed files with 7 additions and 3 deletions
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10
lib/Target/X86/X86ISelDAGToDAG.cpp
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@ -147,7 +147,8 @@ namespace {
SDOperand &Index, SDOperand &Disp);
bool SelectLEAAddr(SDOperand N, SDOperand &Base, SDOperand &Scale,
SDOperand &Index, SDOperand &Disp);
bool SelectScalarSSELoad(SDOperand N, SDOperand &Base, SDOperand &Scale,
bool SelectScalarSSELoad(SDOperand Root, SDOperand Pred,
SDOperand N, SDOperand &Base, SDOperand &Scale,
SDOperand &Index, SDOperand &Disp,
SDOperand &InChain, SDOperand &OutChain);
bool TryFoldLoad(SDOperand P, SDOperand N,
@ -804,13 +805,16 @@ static inline bool isZeroNode(SDOperand Elt) {
/// SelectScalarSSELoad - Match a scalar SSE load. In particular, we want to
/// match a load whose top elements are either undef or zeros. The load flavor
/// is derived from the type of N, which is either v4f32 or v2f64.
bool X86DAGToDAGISel::SelectScalarSSELoad(SDOperand N, SDOperand &Base,
bool X86DAGToDAGISel::SelectScalarSSELoad(SDOperand Root, SDOperand Pred,
SDOperand N, SDOperand &Base,
SDOperand &Scale, SDOperand &Index,
SDOperand &Disp, SDOperand &InChain,
SDOperand &OutChain) {
if (N.getOpcode() == ISD::SCALAR_TO_VECTOR) {
InChain = N.getOperand(0).getValue(1);
if (ISD::isNON_EXTLoad(InChain.Val) && InChain.getValue(0).hasOneUse()) {
if (ISD::isNON_EXTLoad(InChain.Val) &&
InChain.getValue(0).hasOneUse() &&
CanBeFoldedBy(N.Val, Pred.Val, Root.Val)) {
LoadSDNode *LD = cast<LoadSDNode>(InChain);
if (!SelectAddr(LD->getBasePtr(), Base, Scale, Index, Disp))
return false;