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DAGCombiner: Deduplicate code.

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llvm-svn: 148217
This commit is contained in:
Benjamin Kramer 2012-01-15 11:50:43 +00:00
parent 2e727a1727
commit 3db5296619
1 changed files with 14 additions and 24 deletions
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38
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -8208,30 +8208,20 @@ bool DAGCombiner::isAlias(SDValue Ptr1, int64_t Size1,
/// FindAliasInfo - Extracts the relevant alias information from the memory
/// node. Returns true if the operand was a load.
bool DAGCombiner::FindAliasInfo(SDNode *N,
SDValue &Ptr, int64_t &Size,
const Value *&SrcValue,
int &SrcValueOffset,
unsigned &SrcValueAlign,
const MDNode *&TBAAInfo) const {
if (LoadSDNode *LD = dyn_cast<LoadSDNode>(N)) {
Ptr = LD->getBasePtr();
Size = LD->getMemoryVT().getSizeInBits() >> 3;
SrcValue = LD->getSrcValue();
SrcValueOffset = LD->getSrcValueOffset();
SrcValueAlign = LD->getOriginalAlignment();
TBAAInfo = LD->getTBAAInfo();
return true;
}
if (StoreSDNode *ST = dyn_cast<StoreSDNode>(N)) {
Ptr = ST->getBasePtr();
Size = ST->getMemoryVT().getSizeInBits() >> 3;
SrcValue = ST->getSrcValue();
SrcValueOffset = ST->getSrcValueOffset();
SrcValueAlign = ST->getOriginalAlignment();
TBAAInfo = ST->getTBAAInfo();
return false;
}
llvm_unreachable("FindAliasInfo expected a memory operand");
SDValue &Ptr, int64_t &Size,
const Value *&SrcValue,
int &SrcValueOffset,
unsigned &SrcValueAlign,
const MDNode *&TBAAInfo) const {
LSBaseSDNode *LS = cast<LSBaseSDNode>(N);
Ptr = LS->getBasePtr();
Size = LS->getMemoryVT().getSizeInBits() >> 3;
SrcValue = LS->getSrcValue();
SrcValueOffset = LS->getSrcValueOffset();
SrcValueAlign = LS->getOriginalAlignment();
TBAAInfo = LS->getTBAAInfo();
return isa<LoadSDNode>(LS);
}
/// GatherAllAliases - Walk up chain skipping non-aliasing memory nodes,