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Create a symbolic region instead of a loc::SymbolVal. This is a continued step 

to eliminate the use of loc::SymbolVal.

llvm-svn: 68685
This commit is contained in:
Zhongxing Xu 2009-04-09 05:57:11 +00:00
parent fc8b2b9ff9
commit cb5d3ced70
3 changed files with 14 additions and 16 deletions
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4
clang/include/clang/Analysis/PathSensitive/SVals.h
View File

@ -76,8 +76,8 @@ public:
static SVal GetRValueSymbolVal(SymbolManager& SymMgr, MemRegionManager& MRMgr,
const MemRegion* R);
static SVal GetConjuredSymbolVal(SymbolManager& SymMgr, const Expr *E,
unsigned Count);
static SVal GetConjuredSymbolVal(SymbolManager& SymMgr, MemRegionManager&,
const Expr *E, unsigned Count);
inline bool isUnknown() const {
return getRawKind() == UnknownKind;

3
clang/lib/Analysis/GRExprEngine.cpp
View File

@ -2536,7 +2536,8 @@ void GRExprEngine::VisitUnaryOperator(UnaryOperator* U, NodeTy* Pred,
// Conjure a new symbol if necessary to recover precision.
if (Result.isUnknown() || !getConstraintManager().canReasonAbout(Result))
Result = SVal::GetConjuredSymbolVal(SymMgr, Ex,
Result = SVal::GetConjuredSymbolVal(SymMgr,
getStoreManager().getRegionManager(),Ex,
Builder->getCurrentBlockCount());
state = BindExpr(state, U, U->isPostfix() ? V2 : Result);

21
clang/lib/Analysis/SVals.cpp
View File

@ -291,26 +291,23 @@ SVal SVal::GetRValueSymbolVal(SymbolManager& SymMgr, MemRegionManager& MRMgr,
return Loc::MakeVal(MRMgr.getSymbolicRegion(sym));
// Only handle integers for now.
if (T->isIntegerType())
if (T->isIntegerType() && T->isScalarType())
return NonLoc::MakeVal(sym);
}
return UnknownVal();
}
SVal SVal::GetConjuredSymbolVal(SymbolManager &SymMgr, const Expr* E,
unsigned Count) {
SVal SVal::GetConjuredSymbolVal(SymbolManager &SymMgr, MemRegionManager& MRMgr,
const Expr* E, unsigned Count) {
QualType T = E->getType();
SymbolRef sym = SymMgr.getConjuredSymbol(E, Count);
if (Loc::IsLocType(T)) {
SymbolRef Sym = SymMgr.getConjuredSymbol(E, Count);
return loc::SymbolVal(Sym);
}
else if (T->isIntegerType() && T->isScalarType()) {
SymbolRef Sym = SymMgr.getConjuredSymbol(E, Count);
return nonloc::SymbolVal(Sym);
}
if (Loc::IsLocType(T))
return Loc::MakeVal(MRMgr.getSymbolicRegion(sym));
if (T->isIntegerType() && T->isScalarType())
return NonLoc::MakeVal(sym);
return UnknownVal();
}