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make AliasAnalysis know that VAArg writes memory. This is extremely conservative and should be fixed 

llvm-svn: 22267
This commit is contained in:
Andrew Lenharth 2005-06-20 15:24:23 +00:00
parent 805d84a077
commit f42d7b54c0
1 changed files with 5 additions and 0 deletions
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5
llvm/include/llvm/Analysis/AliasAnalysis.h
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@ -37,6 +37,7 @@ namespace llvm {
class LoadInst; class LoadInst;
class StoreInst; class StoreInst;
class VAArgInst;
class TargetData; class TargetData;
class AliasAnalysis { class AliasAnalysis {
@ -254,8 +255,12 @@ public:
ModRefResult getModRefInfo(InvokeInst *I, Value *P, unsigned Size) { ModRefResult getModRefInfo(InvokeInst *I, Value *P, unsigned Size) {
return getModRefInfo(CallSite(I), P, Size); return getModRefInfo(CallSite(I), P, Size);
} }
ModRefResult getModRefInfo(VAArgInst* I, Value* P, unsigned Size) {
return AliasAnalysis::Mod;
}
ModRefResult getModRefInfo(Instruction *I, Value *P, unsigned Size) { ModRefResult getModRefInfo(Instruction *I, Value *P, unsigned Size) {
switch (I->getOpcode()) { switch (I->getOpcode()) {
case Instruction::VAArg: return getModRefInfo((VAArgInst*)I, P, Size);
case Instruction::Load: return getModRefInfo((LoadInst*)I, P, Size); case Instruction::Load: return getModRefInfo((LoadInst*)I, P, Size);
case Instruction::Store: return getModRefInfo((StoreInst*)I, P, Size); case Instruction::Store: return getModRefInfo((StoreInst*)I, P, Size);
case Instruction::Call: return getModRefInfo((CallInst*)I, P, Size); case Instruction::Call: return getModRefInfo((CallInst*)I, P, Size);