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Cannot combine an indexed load / store any further. 

llvm-svn: 32629
This commit is contained in:
Evan Cheng 2006-12-16 06:25:23 +00:00
parent 5c65ea0db1
commit 28cf4277bb
1 changed files with 10 additions and 1 deletions
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11
llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -2727,12 +2727,17 @@ bool DAGCombiner::CombineToPreIndexedLoadStore(SDNode *N) {
SDOperand Ptr;
MVT::ValueType VT;
if (LoadSDNode *LD = dyn_cast<LoadSDNode>(N)) {
if (LD->getAddressingMode() != ISD::UNINDEXED)
return false;
VT = LD->getLoadedVT();
if (!TLI.isIndexedLoadLegal(ISD::PRE_INC, VT) &&
if (LD->getAddressingMode() != ISD::UNINDEXED &&
!TLI.isIndexedLoadLegal(ISD::PRE_INC, VT) &&
!TLI.isIndexedLoadLegal(ISD::PRE_DEC, VT))
return false;
Ptr = LD->getBasePtr();
} else if (StoreSDNode *ST = dyn_cast<StoreSDNode>(N)) {
if (ST->getAddressingMode() != ISD::UNINDEXED)
return false;
VT = ST->getStoredVT();
if (!TLI.isIndexedStoreLegal(ISD::PRE_INC, VT) &&
!TLI.isIndexedStoreLegal(ISD::PRE_DEC, VT))
@ -2846,12 +2851,16 @@ bool DAGCombiner::CombineToPostIndexedLoadStore(SDNode *N) {
SDOperand Ptr;
MVT::ValueType VT;
if (LoadSDNode *LD = dyn_cast<LoadSDNode>(N)) {
if (LD->getAddressingMode() != ISD::UNINDEXED)
return false;
VT = LD->getLoadedVT();
if (!TLI.isIndexedLoadLegal(ISD::POST_INC, VT) &&
!TLI.isIndexedLoadLegal(ISD::POST_DEC, VT))
return false;
Ptr = LD->getBasePtr();
} else if (StoreSDNode *ST = dyn_cast<StoreSDNode>(N)) {
if (ST->getAddressingMode() != ISD::UNINDEXED)
return false;
VT = ST->getStoredVT();
if (!TLI.isIndexedStoreLegal(ISD::POST_INC, VT) &&
!TLI.isIndexedStoreLegal(ISD::POST_DEC, VT))