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This patch adds two more SymbolData subclasses: SymIntExpr and SymSymExpr, for

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representing symbolic expressions like 'x'+3 and 'x'+'y'. The design is
subjected to change later when we fix the class hierarchy of symbolic
expressions.

llvm-svn: 67678
This commit is contained in:
Zhongxing Xu
2009-03-25 05:58:37 +00:00
parent b2304ee0d1
commit 24e7eade19
7 changed files with 152 additions and 28 deletions
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41
clang/lib/Analysis/SymbolManager.cpp
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@@ -74,6 +74,47 @@ SymbolRef SymbolManager::getConjuredSymbol(const Stmt* E, QualType T,
return SymbolCounter++;
}
SymbolRef SymbolManager::getSymIntExpr(SymbolRef lhs,BinaryOperator::Opcode op,
const llvm::APSInt& v, QualType t) {
llvm::FoldingSetNodeID ID;
SymIntExpr::Profile(ID, lhs, op, v, t);
void* InsertPos;
SymbolData* data = DataSet.FindNodeOrInsertPos(ID, InsertPos);
if (data)
return data->getSymbol();
data = (SymIntExpr*) BPAlloc.Allocate<SymIntExpr>();
new (data) SymIntExpr(SymbolCounter, lhs, op, v, t);
DataSet.InsertNode(data, InsertPos);
DataMap[SymbolCounter] = data;
return SymbolCounter++;
}
SymbolRef SymbolManager::getSymSymExpr(SymbolRef lhs, BinaryOperator::Opcode op,
SymbolRef rhs, QualType t) {
llvm::FoldingSetNodeID ID;
SymSymExpr::Profile(ID, lhs, op, rhs, t);
void* InsertPos;
SymbolData* data = DataSet.FindNodeOrInsertPos(ID, InsertPos);
if (data)
return data->getSymbol();
data = (SymSymExpr*) BPAlloc.Allocate<SymSymExpr>();
new (data) SymSymExpr(SymbolCounter, lhs, op, rhs, t);
DataSet.InsertNode(data, InsertPos);
DataMap[SymbolCounter] = data;
return SymbolCounter++;
}
const SymbolData& SymbolManager::getSymbolData(SymbolRef Sym) const {
DataMapTy::const_iterator I = DataMap.find(Sym);
assert (I != DataMap.end());