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-rw-r--r--lib/Analysis/SVals.cpp163
1 files changed, 73 insertions, 90 deletions
diff --git a/lib/Analysis/SVals.cpp b/lib/Analysis/SVals.cpp
index d711ce0a225e..688b7ff6e1e3 100644
--- a/lib/Analysis/SVals.cpp
+++ b/lib/Analysis/SVals.cpp
@@ -14,7 +14,6 @@
#include "clang/Analysis/PathSensitive/GRState.h"
#include "clang/Basic/IdentifierTable.h"
-#include "llvm/Support/Streams.h"
using namespace clang;
using llvm::dyn_cast;
@@ -43,52 +42,32 @@ bool SVal::hasConjuredSymbol() const {
SymbolRef sym = SR->getSymbol();
if (isa<SymbolConjured>(sym))
return true;
- } else if (const CodeTextRegion *CTR = dyn_cast<CodeTextRegion>(R)) {
- if (CTR->isSymbolic()) {
- SymbolRef sym = CTR->getSymbol();
- if (isa<SymbolConjured>(sym))
- return true;
- }
}
}
return false;
}
-const FunctionDecl* SVal::getAsFunctionDecl() const {
+const FunctionDecl *SVal::getAsFunctionDecl() const {
if (const loc::MemRegionVal* X = dyn_cast<loc::MemRegionVal>(this)) {
const MemRegion* R = X->getRegion();
- if (const CodeTextRegion* CTR = R->getAs<CodeTextRegion>()) {
- if (CTR->isDeclared())
- return CTR->getDecl();
- }
+ if (const CodeTextRegion *CTR = R->getAs<CodeTextRegion>())
+ return CTR->getDecl();
}
- return 0;
+ return NULL;
}
-/// getAsLocSymbol - If this SVal is a location (subclasses Loc) and
+/// getAsLocSymbol - If this SVal is a location (subclasses Loc) and
/// wraps a symbol, return that SymbolRef. Otherwise return 0.
// FIXME: should we consider SymbolRef wrapped in CodeTextRegion?
SymbolRef SVal::getAsLocSymbol() const {
if (const loc::MemRegionVal *X = dyn_cast<loc::MemRegionVal>(this)) {
- const MemRegion *R = X->getRegion();
-
- while (R) {
- // Blast through region views.
- if (const TypedViewRegion *View = dyn_cast<TypedViewRegion>(R)) {
- R = View->getSuperRegion();
- continue;
- }
-
- if (const SymbolicRegion *SymR = dyn_cast<SymbolicRegion>(R))
- return SymR->getSymbol();
-
- break;
- }
+ const MemRegion *R = X->getBaseRegion();
+ if (const SymbolicRegion *SymR = dyn_cast<SymbolicRegion>(R))
+ return SymR->getSymbol();
}
-
- return 0;
+ return NULL;
}
/// getAsSymbol - If this Sval wraps a symbol return that SymbolRef.
@@ -97,11 +76,11 @@ SymbolRef SVal::getAsLocSymbol() const {
SymbolRef SVal::getAsSymbol() const {
if (const nonloc::SymbolVal *X = dyn_cast<nonloc::SymbolVal>(this))
return X->getSymbol();
-
+
if (const nonloc::SymExprVal *X = dyn_cast<nonloc::SymExprVal>(this))
if (SymbolRef Y = dyn_cast<SymbolData>(X->getSymbolicExpression()))
return Y;
-
+
return getAsLocSymbol();
}
@@ -110,7 +89,7 @@ SymbolRef SVal::getAsSymbol() const {
const SymExpr *SVal::getAsSymbolicExpression() const {
if (const nonloc::SymExprVal *X = dyn_cast<nonloc::SymExprVal>(this))
return X->getSymbolicExpression();
-
+
return getAsSymbol();
}
@@ -121,6 +100,11 @@ const MemRegion *SVal::getAsRegion() const {
return 0;
}
+const MemRegion *loc::MemRegionVal::getBaseRegion() const {
+ const MemRegion *R = getRegion();
+ return R ? R->getBaseRegion() : NULL;
+}
+
bool SVal::symbol_iterator::operator==(const symbol_iterator &X) const {
return itr == X.itr;
}
@@ -131,13 +115,13 @@ bool SVal::symbol_iterator::operator!=(const symbol_iterator &X) const {
SVal::symbol_iterator::symbol_iterator(const SymExpr *SE) {
itr.push_back(SE);
- while (!isa<SymbolData>(itr.back())) expand();
+ while (!isa<SymbolData>(itr.back())) expand();
}
SVal::symbol_iterator& SVal::symbol_iterator::operator++() {
assert(!itr.empty() && "attempting to iterate on an 'end' iterator");
assert(isa<SymbolData>(itr.back()));
- itr.pop_back();
+ itr.pop_back();
if (!itr.empty())
while (!isa<SymbolData>(itr.back())) expand();
return *this;
@@ -151,20 +135,28 @@ SymbolRef SVal::symbol_iterator::operator*() {
void SVal::symbol_iterator::expand() {
const SymExpr *SE = itr.back();
itr.pop_back();
-
+
if (const SymIntExpr *SIE = dyn_cast<SymIntExpr>(SE)) {
itr.push_back(SIE->getLHS());
return;
- }
+ }
else if (const SymSymExpr *SSE = dyn_cast<SymSymExpr>(SE)) {
itr.push_back(SSE->getLHS());
itr.push_back(SSE->getRHS());
return;
}
-
+
assert(false && "unhandled expansion case");
}
+const GRState *nonloc::LazyCompoundVal::getState() const {
+ return static_cast<const LazyCompoundValData*>(Data)->getState();
+}
+
+const TypedRegion *nonloc::LazyCompoundVal::getRegion() const {
+ return static_cast<const LazyCompoundValData*>(Data)->getRegion();
+}
+
//===----------------------------------------------------------------------===//
// Other Iterators.
//===----------------------------------------------------------------------===//
@@ -197,10 +189,10 @@ bool SVal::isZeroConstant() const {
SVal nonloc::ConcreteInt::evalBinOp(ValueManager &ValMgr,
BinaryOperator::Opcode Op,
- const nonloc::ConcreteInt& R) const {
+ const nonloc::ConcreteInt& R) const {
const llvm::APSInt* X =
ValMgr.getBasicValueFactory().EvaluateAPSInt(Op, getValue(), R.getValue());
-
+
if (X)
return nonloc::ConcreteInt(*X);
else
@@ -223,12 +215,12 @@ nonloc::ConcreteInt nonloc::ConcreteInt::evalMinus(ValueManager &ValMgr) const {
SVal loc::ConcreteInt::EvalBinOp(BasicValueFactory& BasicVals,
BinaryOperator::Opcode Op,
const loc::ConcreteInt& R) const {
-
+
assert (Op == BinaryOperator::Add || Op == BinaryOperator::Sub ||
(Op >= BinaryOperator::LT && Op <= BinaryOperator::NE));
-
+
const llvm::APSInt* X = BasicVals.EvaluateAPSInt(Op, getValue(), R.getValue());
-
+
if (X)
return loc::ConcreteInt(*X);
else
@@ -239,98 +231,89 @@ SVal loc::ConcreteInt::EvalBinOp(BasicValueFactory& BasicVals,
// Pretty-Printing.
//===----------------------------------------------------------------------===//
-void SVal::printStdErr() const { print(llvm::errs()); }
-
-void SVal::print(llvm::raw_ostream& Out) const {
+void SVal::dump() const { dumpToStream(llvm::errs()); }
+void SVal::dumpToStream(llvm::raw_ostream& os) const {
switch (getBaseKind()) {
-
case UnknownKind:
- Out << "Invalid"; break;
-
+ os << "Invalid";
+ break;
case NonLocKind:
- cast<NonLoc>(this)->print(Out); break;
-
+ cast<NonLoc>(this)->dumpToStream(os);
+ break;
case LocKind:
- cast<Loc>(this)->print(Out); break;
-
+ cast<Loc>(this)->dumpToStream(os);
+ break;
case UndefinedKind:
- Out << "Undefined"; break;
-
+ os << "Undefined";
+ break;
default:
assert (false && "Invalid SVal.");
}
}
-void NonLoc::print(llvm::raw_ostream& Out) const {
-
- switch (getSubKind()) {
-
+void NonLoc::dumpToStream(llvm::raw_ostream& os) const {
+ switch (getSubKind()) {
case nonloc::ConcreteIntKind:
- Out << cast<nonloc::ConcreteInt>(this)->getValue().getZExtValue();
-
+ os << cast<nonloc::ConcreteInt>(this)->getValue().getZExtValue();
if (cast<nonloc::ConcreteInt>(this)->getValue().isUnsigned())
- Out << 'U';
-
+ os << 'U';
break;
-
case nonloc::SymbolValKind:
- Out << '$' << cast<nonloc::SymbolVal>(this)->getSymbol();
+ os << '$' << cast<nonloc::SymbolVal>(this)->getSymbol();
break;
-
case nonloc::SymExprValKind: {
const nonloc::SymExprVal& C = *cast<nonloc::SymExprVal>(this);
const SymExpr *SE = C.getSymbolicExpression();
- Out << SE;
+ os << SE;
break;
}
-
case nonloc::LocAsIntegerKind: {
const nonloc::LocAsInteger& C = *cast<nonloc::LocAsInteger>(this);
- C.getLoc().print(Out);
- Out << " [as " << C.getNumBits() << " bit integer]";
+ os << C.getLoc() << " [as " << C.getNumBits() << " bit integer]";
break;
}
-
case nonloc::CompoundValKind: {
const nonloc::CompoundVal& C = *cast<nonloc::CompoundVal>(this);
- Out << " {";
+ os << "compoundVal{";
bool first = true;
for (nonloc::CompoundVal::iterator I=C.begin(), E=C.end(); I!=E; ++I) {
- if (first) { Out << ' '; first = false; }
- else Out << ", ";
- (*I).print(Out);
+ if (first) {
+ os << ' '; first = false;
+ }
+ else
+ os << ", ";
+
+ (*I).dumpToStream(os);
}
- Out << " }";
+ os << "}";
+ break;
+ }
+ case nonloc::LazyCompoundValKind: {
+ const nonloc::LazyCompoundVal &C = *cast<nonloc::LazyCompoundVal>(this);
+ os << "lazyCompoundVal{" << (void*) C.getState() << ',' << C.getRegion()
+ << '}';
break;
}
-
default:
assert (false && "Pretty-printed not implemented for this NonLoc.");
break;
}
}
-void Loc::print(llvm::raw_ostream& Out) const {
-
- switch (getSubKind()) {
-
+void Loc::dumpToStream(llvm::raw_ostream& os) const {
+ switch (getSubKind()) {
case loc::ConcreteIntKind:
- Out << cast<loc::ConcreteInt>(this)->getValue().getZExtValue()
- << " (Loc)";
+ os << cast<loc::ConcreteInt>(this)->getValue().getZExtValue() << " (Loc)";
break;
-
case loc::GotoLabelKind:
- Out << "&&"
- << cast<loc::GotoLabel>(this)->getLabel()->getID()->getName();
+ os << "&&" << cast<loc::GotoLabel>(this)->getLabel()->getID()->getName();
break;
-
case loc::MemRegionKind:
- Out << '&' << cast<loc::MemRegionVal>(this)->getRegion()->getString();
+ os << '&' << cast<loc::MemRegionVal>(this)->getRegion()->getString();
break;
-
default:
- assert (false && "Pretty-printing not implemented for this Loc.");
+ assert(false && "Pretty-printing not implemented for this Loc.");
break;
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-24 04:04:15 +0000