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Extend the AliasAnalysis::pointsToConstantMemory interface to allow it

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to optionally look for constant or local (alloca) memory.

Teach BasicAliasAnalysis::pointsToConstantMemory to look through Select
and Phi nodes, and to support looking for local memory.

Remove FunctionAttrs' PointsToLocalOrConstantMemory function, now that
AliasAnalysis knows all the tricks that it knew.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118412 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2010-11-08 16:45:26 +00:00
parent c80cbf2540
commit a25e5dbcc2
9 changed files with 85 additions and 83 deletions
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4
lib/Analysis/AliasDebugger.cpp
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@@ -113,9 +113,9 @@ namespace {
return AliasAnalysis::getModRefInfo(CS1,CS2);
}
bool pointsToConstantMemory(const Location &Loc) {
bool pointsToConstantMemory(const Location &Loc, bool OrLocal) {
assert(Vals.find(Loc.Ptr) != Vals.end() && "Never seen value in AA before");
return AliasAnalysis::pointsToConstantMemory(Loc);
return AliasAnalysis::pointsToConstantMemory(Loc, OrLocal);
}
virtual void deleteValue(Value *V) {