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This code was usurping the sextload expand in teh legalizer. Just make

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sure the right conditions are checked.

llvm-svn: 32611
This commit is contained in:
Jim Laskey 2006-12-15 21:38:30 +00:00
parent a37c63bcd5
commit 0809c79c60
1 changed files with 9 additions and 7 deletions
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16
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -1943,13 +1943,15 @@ SDOperand DAGCombiner::visitSIGN_EXTEND(SDNode *N) {
if ((ISD::isSEXTLoad(N0.Val) || ISD::isEXTLoad(N0.Val)) && N0.hasOneUse()) {
LoadSDNode *LN0 = cast<LoadSDNode>(N0);
MVT::ValueType EVT = LN0->getLoadedVT();
SDOperand ExtLoad = DAG.getExtLoad(ISD::SEXTLOAD, VT, LN0->getChain(),
LN0->getBasePtr(), LN0->getSrcValue(),
LN0->getSrcValueOffset(), EVT);
CombineTo(N, ExtLoad);
CombineTo(N0.Val, DAG.getNode(ISD::TRUNCATE, N0.getValueType(), ExtLoad),
ExtLoad.getValue(1));
return SDOperand(N, 0); // Return N so it doesn't get rechecked!
if (!AfterLegalize || TLI.isLoadXLegal(ISD::SEXTLOAD, EVT)) {
SDOperand ExtLoad = DAG.getExtLoad(ISD::SEXTLOAD, VT, LN0->getChain(),
LN0->getBasePtr(), LN0->getSrcValue(),
LN0->getSrcValueOffset(), EVT);
CombineTo(N, ExtLoad);
CombineTo(N0.Val, DAG.getNode(ISD::TRUNCATE, N0.getValueType(), ExtLoad),
ExtLoad.getValue(1));
return SDOperand(N, 0); // Return N so it doesn't get rechecked!
}
}
return SDOperand();