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This check is not correct for mallocs, so exclude them earlier. 

llvm-svn: 47263
This commit is contained in:
Owen Anderson 2008-02-18 09:11:02 +00:00
parent 8f90724a53
commit bdf7ed9495
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/Analysis/BasicAliasAnalysis.cpp
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@ -271,10 +271,10 @@ BasicAliasAnalysis::getModRefInfo(CallSite CS, Value *P, unsigned Size) {
// If this is a tail call and P points to a stack location, we know that
// the tail call cannot access or modify the local stack.
if (isa<AllocationInst>(Object) ||
if (isa<AllocaInst>(Object) ||
cast<Argument>(Object)->hasByValAttr())
if (CallInst *CI = dyn_cast<CallInst>(CS.getInstruction()))
if (CI->isTailCall() && !isa<MallocInst>(Object))
if (CI->isTailCall())
return NoModRef;
}
}