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Fix some problems with ASTCallbackVH in its use as a DenseMap key.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77696 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-07-31 18:21:48 +00:00
parent 29384efb76
commit a818c30d66
2 changed files with 14 additions and 5 deletions
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9
include/llvm/Analysis/AliasSetTracker.h
View File

@ -259,12 +259,19 @@ class AliasSetTracker {
virtual void deleted();
public:
ASTCallbackVH(Value *V, AliasSetTracker *AST = 0);
ASTCallbackVH &operator=(Value *V);
};
/// ASTCallbackVHDenseMapInfo - Traits to tell DenseMap that ASTCallbackVH
/// is not a POD (it needs its destructor called).
struct ASTCallbackVHDenseMapInfo : public DenseMapInfo<Value *> {
static bool isPod() { return false; }
};
AliasAnalysis &AA;
ilist<AliasSet> AliasSets;
typedef DenseMap<ASTCallbackVH, AliasSet::PointerRec*, DenseMapInfo<Value*> >
typedef DenseMap<ASTCallbackVH, AliasSet::PointerRec*,
ASTCallbackVHDenseMapInfo>
PointerMapType;
// Map from pointers to their node

10
lib/Analysis/AliasSetTracker.cpp
View File

@ -586,10 +586,12 @@ void AliasSetTracker::ASTCallbackVH::deleted() {
}
AliasSetTracker::ASTCallbackVH::ASTCallbackVH(Value *V, AliasSetTracker *ast)
: CallbackVH(V == DenseMapInfo<Value *>::getEmptyKey() ? 0 :
V == DenseMapInfo<Value *>::getTombstoneKey() ? 0 :
V),
AST(ast) {}
: CallbackVH(V), AST(ast) {}
AliasSetTracker::ASTCallbackVH &
AliasSetTracker::ASTCallbackVH::operator=(Value *V) {
return *this = ASTCallbackVH(V, AST);
}
//===----------------------------------------------------------------------===//
// AliasSetPrinter Pass