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convert dagcombine off the old form of getLoad. This fixes several bugs

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with SVOffset computation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114442 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-09-21 16:08:50 +00:00
parent 28b4afc103
commit fa45901eaa
1 changed files with 18 additions and 16 deletions
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34
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -4107,10 +4107,10 @@ SDValue DAGCombiner::ReduceLoadWidth(SDNode *N) {
SDValue Load = (ExtType == ISD::NON_EXTLOAD)
? DAG.getLoad(VT, N0.getDebugLoc(), LN0->getChain(), NewPtr,
LN0->getSrcValue(), LN0->getSrcValueOffset() + PtrOff,
LN0->getPointerInfo().getWithOffset(PtrOff),
LN0->isVolatile(), LN0->isNonTemporal(), NewAlign)
: DAG.getExtLoad(ExtType, VT, N0.getDebugLoc(), LN0->getChain(), NewPtr,
LN0->getSrcValue(), LN0->getSrcValueOffset() + PtrOff,
LN0->getPointerInfo().getWithOffset(PtrOff),
ExtVT, LN0->isVolatile(), LN0->isNonTemporal(),
NewAlign);
@ -4295,7 +4295,9 @@ SDValue DAGCombiner::CombineConsecutiveLoads(SDNode *N, EVT VT) {
LoadSDNode *LD1 = dyn_cast<LoadSDNode>(getBuildPairElt(N, 0));
LoadSDNode *LD2 = dyn_cast<LoadSDNode>(getBuildPairElt(N, 1));
if (!LD1 || !LD2 || !ISD::isNON_EXTLoad(LD1) || !LD1->hasOneUse())
if (!LD1 || !LD2 || !ISD::isNON_EXTLoad(LD1) || !LD1->hasOneUse() ||
LD1->getPointerInfo().getAddrSpace() !=
LD2->getPointerInfo().getAddrSpace())
return SDValue();
EVT LD1VT = LD1->getValueType(0);
@ -4313,8 +4315,8 @@ SDValue DAGCombiner::CombineConsecutiveLoads(SDNode *N, EVT VT) {
if (NewAlign <= Align &&
(!LegalOperations || TLI.isOperationLegal(ISD::LOAD, VT)))
return DAG.getLoad(VT, N->getDebugLoc(), LD1->getChain(),
LD1->getBasePtr(), LD1->getSrcValue(),
LD1->getSrcValueOffset(), false, false, Align);
LD1->getBasePtr(), LD1->getPointerInfo(),
false, false, Align);
}
return SDValue();
@ -4382,8 +4384,7 @@ SDValue DAGCombiner::visitBIT_CONVERT(SDNode *N) {
if (Align <= OrigAlign) {
SDValue Load = DAG.getLoad(VT, N->getDebugLoc(), LN0->getChain(),
LN0->getBasePtr(),
LN0->getSrcValue(), LN0->getSrcValueOffset(),
LN0->getBasePtr(), LN0->getPointerInfo(),
LN0->isVolatile(), LN0->isNonTemporal(),
OrigAlign);
AddToWorkList(N);
@ -5587,15 +5588,13 @@ SDValue DAGCombiner::visitLOAD(SDNode *N) {
// Replace the chain to void dependency.
if (LD->getExtensionType() == ISD::NON_EXTLOAD) {
ReplLoad = DAG.getLoad(N->getValueType(0), LD->getDebugLoc(),
BetterChain, Ptr,
LD->getSrcValue(), LD->getSrcValueOffset(),
BetterChain, Ptr, LD->getPointerInfo(),
LD->isVolatile(), LD->isNonTemporal(),
LD->getAlignment());
} else {
ReplLoad = DAG.getExtLoad(LD->getExtensionType(), LD->getValueType(0),
LD->getDebugLoc(),
BetterChain, Ptr, LD->getSrcValue(),
LD->getSrcValueOffset(),
BetterChain, Ptr, LD->getPointerInfo(),
LD->getMemoryVT(),
LD->isVolatile(),
LD->isNonTemporal(),
@ -5801,7 +5800,9 @@ SDValue DAGCombiner::ReduceLoadOpStoreWidth(SDNode *N) {
if (ISD::isNormalLoad(N0.getNode()) && N0.hasOneUse() &&
Chain == SDValue(N0.getNode(), 1)) {
LoadSDNode *LD = cast<LoadSDNode>(N0);
if (LD->getBasePtr() != Ptr)
if (LD->getBasePtr() != Ptr ||
LD->getPointerInfo().getAddrSpace() !=
ST->getPointerInfo().getAddrSpace())
return SDValue();
// Find the type to narrow it the load / op / store to.
@ -5850,14 +5851,14 @@ SDValue DAGCombiner::ReduceLoadOpStoreWidth(SDNode *N) {
DAG.getConstant(PtrOff, Ptr.getValueType()));
SDValue NewLD = DAG.getLoad(NewVT, N0.getDebugLoc(),
LD->getChain(), NewPtr,
LD->getSrcValue(), LD->getSrcValueOffset(),
LD->getPointerInfo().getWithOffset(PtrOff),
LD->isVolatile(), LD->isNonTemporal(),
NewAlign);
SDValue NewVal = DAG.getNode(Opc, Value.getDebugLoc(), NewVT, NewLD,
DAG.getConstant(NewImm, NewVT));
SDValue NewST = DAG.getStore(Chain, N->getDebugLoc(),
NewVal, NewPtr,
ST->getSrcValue(), ST->getSrcValueOffset(),
ST->getPointerInfo().getWithOffset(PtrOff),
false, false, NewAlign);
AddToWorkList(NewPtr.getNode());
@ -6204,8 +6205,9 @@ SDValue DAGCombiner::visitEXTRACT_VECTOR_ELT(SDNode *N) {
}
SDValue NewPtr = LN0->getBasePtr();
unsigned PtrOff = 0;
if (Elt) {
unsigned PtrOff = LVT.getSizeInBits() * Elt / 8;
PtrOff = LVT.getSizeInBits() * Elt / 8;
EVT PtrType = NewPtr.getValueType();
if (TLI.isBigEndian())
PtrOff = VT.getSizeInBits() / 8 - PtrOff;
@ -6214,7 +6216,7 @@ SDValue DAGCombiner::visitEXTRACT_VECTOR_ELT(SDNode *N) {
}
return DAG.getLoad(LVT, N->getDebugLoc(), LN0->getChain(), NewPtr,
LN0->getSrcValue(), LN0->getSrcValueOffset(),
LN0->getPointerInfo().getWithOffset(PtrOff),
LN0->isVolatile(), LN0->isNonTemporal(), Align);
}