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Update comments; BasicAA is no longer necessarily the end of the chain. 

llvm-svn: 117268
This commit is contained in:
Dan Gohman 2010-10-25 16:29:52 +00:00
parent 1b2d372b9f
commit abaf2d8d3b
1 changed files with 3 additions and 3 deletions
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6
llvm/lib/Analysis/AliasAnalysis.cpp
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@ -94,7 +94,7 @@ AliasAnalysis::getModRefInfo(ImmutableCallSite CS,
if ((Mask & Mod) && pointsToConstantMemory(Loc))
Mask = ModRefResult(Mask & ~Mod);
// If this is BasicAA, don't forward.
// If this is the end of the chain, don't forward.
if (!AA) return Mask;
// Otherwise, fall back to the next AA in the chain. But we can merge
@ -152,7 +152,7 @@ AliasAnalysis::getModRefInfo(ImmutableCallSite CS1, ImmutableCallSite CS2) {
return R;
}
// If this is BasicAA, don't forward.
// If this is the end of the chain, don't forward.
if (!AA) return Mask;
// Otherwise, fall back to the next AA in the chain. But we can merge
@ -171,7 +171,7 @@ AliasAnalysis::getModRefBehavior(ImmutableCallSite CS) {
if (const Function *F = CS.getCalledFunction())
Min = getModRefBehavior(F);
// If this is BasicAA, don't forward.
// If this is the end of the chain, don't forward.
if (!AA) return Min;
// Otherwise, fall back to the next AA in the chain. But we can merge