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Add an optional "tag" to conjured symbols that allows us to distinguish between

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multiple symbols conjured at the same location. All that is required of the tag
is that it is a fixed void* value that points to an memory address that remains
valid throughout the remainder of the lifetime of the SymbolManager.

llvm-svn: 66092
This commit is contained in:
Ted Kremenek
2009-03-04 22:53:46 +00:00
parent 2d33d6300c
commit 6ee8f8bcb5
2 changed files with 24 additions and 15 deletions
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7
clang/lib/Analysis/SymbolManager.cpp
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@@ -52,10 +52,11 @@ SymbolRef SymbolManager::getRegionRValueSymbol(const MemRegion* R) {
return SymbolCounter++;
}
SymbolRef SymbolManager::getConjuredSymbol(Stmt* E, QualType T, unsigned Count){
SymbolRef SymbolManager::getConjuredSymbol(Stmt* E, QualType T, unsigned Count,
const void* SymbolTag) {
llvm::FoldingSetNodeID profile;
SymbolConjured::Profile(profile, E, T, Count);
SymbolConjured::Profile(profile, E, T, Count, SymbolTag);
void* InsertPos;
SymbolData* SD = DataSet.FindNodeOrInsertPos(profile, InsertPos);
@@ -64,7 +65,7 @@ SymbolRef SymbolManager::getConjuredSymbol(Stmt* E, QualType T, unsigned Count){
return SD->getSymbol();
SD = (SymbolData*) BPAlloc.Allocate<SymbolConjured>();
new (SD) SymbolConjured(SymbolCounter, E, T, Count);
new (SD) SymbolConjured(SymbolCounter, E, T, Count, SymbolTag);
DataSet.InsertNode(SD, InsertPos);
DataMap[SymbolCounter] = SD;