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Atomic load/store support in LICM.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137648 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Friedman
2011-08-15 20:52:09 +00:00
parent c537f3be0c
commit 97671565ff
3 changed files with 97 additions and 10 deletions
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12
lib/Analysis/AliasSetTracker.cpp
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@ -126,8 +126,6 @@ void AliasSet::addPointer(AliasSetTracker &AST, PointerRec &Entry,
void AliasSet::addUnknownInst(Instruction *I, AliasAnalysis &AA) {
UnknownInsts.push_back(I);
if (!I->mayReadOrWriteMemory())
return;
if (!I->mayWriteToMemory()) {
AliasTy = MayAlias;
AccessTy |= Refs;
@ -297,22 +295,28 @@ bool AliasSetTracker::add(Value *Ptr, uint64_t Size, const MDNode *TBAAInfo) {
bool AliasSetTracker::add(LoadInst *LI) {
if (LI->getOrdering() > Monotonic) return addUnknown(LI);
AliasSet::AccessType ATy = AliasSet::Refs;
if (!LI->isUnordered()) ATy = AliasSet::ModRef;
bool NewPtr;
AliasSet &AS = addPointer(LI->getOperand(0),
AA.getTypeStoreSize(LI->getType()),
LI->getMetadata(LLVMContext::MD_tbaa),
AliasSet::Refs, NewPtr);
ATy, NewPtr);
if (LI->isVolatile()) AS.setVolatile();
return NewPtr;
}
bool AliasSetTracker::add(StoreInst *SI) {
if (SI->getOrdering() > Monotonic) return addUnknown(SI);
AliasSet::AccessType ATy = AliasSet::Mods;
if (!SI->isUnordered()) ATy = AliasSet::ModRef;
bool NewPtr;
Value *Val = SI->getOperand(0);
AliasSet &AS = addPointer(SI->getOperand(1),
AA.getTypeStoreSize(Val->getType()),
SI->getMetadata(LLVMContext::MD_tbaa),
AliasSet::Mods, NewPtr);
ATy, NewPtr);
if (SI->isVolatile()) AS.setVolatile();
return NewPtr;
}