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-rw-r--r--contrib/llvm/tools/clang/lib/Checker/SVals.cpp354
1 files changed, 0 insertions, 354 deletions
diff --git a/contrib/llvm/tools/clang/lib/Checker/SVals.cpp b/contrib/llvm/tools/clang/lib/Checker/SVals.cpp
deleted file mode 100644
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--- a/contrib/llvm/tools/clang/lib/Checker/SVals.cpp
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-//= RValues.cpp - Abstract RValues for Path-Sens. Value Tracking -*- C++ -*-==//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file defines SVal, Loc, and NonLoc, classes that represent
-// abstract r-values for use with path-sensitive value tracking.
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/Checker/PathSensitive/GRState.h"
-#include "clang/Basic/IdentifierTable.h"
-
-using namespace clang;
-using llvm::dyn_cast;
-using llvm::cast;
-using llvm::APSInt;
-
-//===----------------------------------------------------------------------===//
-// Symbol iteration within an SVal.
-//===----------------------------------------------------------------------===//
-
-
-//===----------------------------------------------------------------------===//
-// Utility methods.
-//===----------------------------------------------------------------------===//
-
-bool SVal::hasConjuredSymbol() const {
- if (const nonloc::SymbolVal* SV = dyn_cast<nonloc::SymbolVal>(this)) {
- SymbolRef sym = SV->getSymbol();
- if (isa<SymbolConjured>(sym))
- return true;
- }
-
- if (const loc::MemRegionVal *RV = dyn_cast<loc::MemRegionVal>(this)) {
- const MemRegion *R = RV->getRegion();
- if (const SymbolicRegion *SR = dyn_cast<SymbolicRegion>(R)) {
- SymbolRef sym = SR->getSymbol();
- if (isa<SymbolConjured>(sym))
- return true;
- }
- }
-
- return false;
-}
-
-const FunctionDecl *SVal::getAsFunctionDecl() const {
- if (const loc::MemRegionVal* X = dyn_cast<loc::MemRegionVal>(this)) {
- const MemRegion* R = X->getRegion();
- if (const FunctionTextRegion *CTR = R->getAs<FunctionTextRegion>())
- return CTR->getDecl();
- }
-
- return NULL;
-}
-
-/// 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 nonloc::LocAsInteger *X = dyn_cast<nonloc::LocAsInteger>(this))
- return X->getLoc().getAsLocSymbol();
-
- if (const loc::MemRegionVal *X = dyn_cast<loc::MemRegionVal>(this)) {
- const MemRegion *R = X->StripCasts();
- if (const SymbolicRegion *SymR = dyn_cast<SymbolicRegion>(R))
- return SymR->getSymbol();
- }
- return NULL;
-}
-
-/// Get the symbol in the SVal or its base region.
-SymbolRef SVal::getLocSymbolInBase() const {
- const loc::MemRegionVal *X = dyn_cast<loc::MemRegionVal>(this);
-
- if (!X)
- return 0;
-
- const MemRegion *R = X->getRegion();
-
- while (const SubRegion *SR = dyn_cast<SubRegion>(R)) {
- if (const SymbolicRegion *SymR = dyn_cast<SymbolicRegion>(SR))
- return SymR->getSymbol();
- else
- R = SR->getSuperRegion();
- }
-
- return 0;
-}
-
-/// getAsSymbol - If this Sval wraps a symbol return that SymbolRef.
-/// Otherwise return 0.
-// FIXME: should we consider SymbolRef wrapped in CodeTextRegion?
-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();
-}
-
-/// getAsSymbolicExpression - If this Sval wraps a symbolic expression then
-/// return that expression. Otherwise return NULL.
-const SymExpr *SVal::getAsSymbolicExpression() const {
- if (const nonloc::SymExprVal *X = dyn_cast<nonloc::SymExprVal>(this))
- return X->getSymbolicExpression();
-
- return getAsSymbol();
-}
-
-const MemRegion *SVal::getAsRegion() const {
- if (const loc::MemRegionVal *X = dyn_cast<loc::MemRegionVal>(this))
- return X->getRegion();
-
- if (const nonloc::LocAsInteger *X = dyn_cast<nonloc::LocAsInteger>(this)) {
- return X->getLoc().getAsRegion();
- }
-
- return 0;
-}
-
-const MemRegion *loc::MemRegionVal::StripCasts() const {
- const MemRegion *R = getRegion();
- return R ? R->StripCasts() : NULL;
-}
-
-bool SVal::symbol_iterator::operator==(const symbol_iterator &X) const {
- return itr == X.itr;
-}
-
-bool SVal::symbol_iterator::operator!=(const symbol_iterator &X) const {
- return itr != X.itr;
-}
-
-SVal::symbol_iterator::symbol_iterator(const SymExpr *SE) {
- itr.push_back(SE);
- 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();
- if (!itr.empty())
- while (!isa<SymbolData>(itr.back())) expand();
- return *this;
-}
-
-SymbolRef SVal::symbol_iterator::operator*() {
- assert(!itr.empty() && "attempting to dereference an 'end' iterator");
- return cast<SymbolData>(itr.back());
-}
-
-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 void *nonloc::LazyCompoundVal::getStore() const {
- return static_cast<const LazyCompoundValData*>(Data)->getStore();
-}
-
-const TypedRegion *nonloc::LazyCompoundVal::getRegion() const {
- return static_cast<const LazyCompoundValData*>(Data)->getRegion();
-}
-
-//===----------------------------------------------------------------------===//
-// Other Iterators.
-//===----------------------------------------------------------------------===//
-
-nonloc::CompoundVal::iterator nonloc::CompoundVal::begin() const {
- return getValue()->begin();
-}
-
-nonloc::CompoundVal::iterator nonloc::CompoundVal::end() const {
- return getValue()->end();
-}
-
-//===----------------------------------------------------------------------===//
-// Useful predicates.
-//===----------------------------------------------------------------------===//
-
-bool SVal::isConstant() const {
- return isa<nonloc::ConcreteInt>(this) || isa<loc::ConcreteInt>(this);
-}
-
-bool SVal::isConstant(int I) const {
- if (isa<loc::ConcreteInt>(*this))
- return cast<loc::ConcreteInt>(*this).getValue() == I;
- else if (isa<nonloc::ConcreteInt>(*this))
- return cast<nonloc::ConcreteInt>(*this).getValue() == I;
- else
- return false;
-}
-
-bool SVal::isZeroConstant() const {
- return isConstant(0);
-}
-
-
-//===----------------------------------------------------------------------===//
-// Transfer function dispatch for Non-Locs.
-//===----------------------------------------------------------------------===//
-
-SVal nonloc::ConcreteInt::evalBinOp(ValueManager &ValMgr,
- BinaryOperator::Opcode Op,
- const nonloc::ConcreteInt& R) const {
- const llvm::APSInt* X =
- ValMgr.getBasicValueFactory().EvaluateAPSInt(Op, getValue(), R.getValue());
-
- if (X)
- return nonloc::ConcreteInt(*X);
- else
- return UndefinedVal();
-}
-
-nonloc::ConcreteInt
-nonloc::ConcreteInt::evalComplement(ValueManager &ValMgr) const {
- return ValMgr.makeIntVal(~getValue());
-}
-
-nonloc::ConcreteInt nonloc::ConcreteInt::evalMinus(ValueManager &ValMgr) const {
- return ValMgr.makeIntVal(-getValue());
-}
-
-//===----------------------------------------------------------------------===//
-// Transfer function dispatch for Locs.
-//===----------------------------------------------------------------------===//
-
-SVal loc::ConcreteInt::EvalBinOp(BasicValueFactory& BasicVals,
- BinaryOperator::Opcode Op,
- const loc::ConcreteInt& R) const {
-
- assert (Op == BO_Add || Op == BO_Sub ||
- (Op >= BO_LT && Op <= BO_NE));
-
- const llvm::APSInt* X = BasicVals.EvaluateAPSInt(Op, getValue(), R.getValue());
-
- if (X)
- return loc::ConcreteInt(*X);
- else
- return UndefinedVal();
-}
-
-//===----------------------------------------------------------------------===//
-// Pretty-Printing.
-//===----------------------------------------------------------------------===//
-
-void SVal::dump() const { dumpToStream(llvm::errs()); }
-
-void SVal::dumpToStream(llvm::raw_ostream& os) const {
- switch (getBaseKind()) {
- case UnknownKind:
- os << "Invalid";
- break;
- case NonLocKind:
- cast<NonLoc>(this)->dumpToStream(os);
- break;
- case LocKind:
- cast<Loc>(this)->dumpToStream(os);
- break;
- case UndefinedKind:
- os << "Undefined";
- break;
- default:
- assert (false && "Invalid SVal.");
- }
-}
-
-void NonLoc::dumpToStream(llvm::raw_ostream& os) const {
- switch (getSubKind()) {
- case nonloc::ConcreteIntKind:
- os << cast<nonloc::ConcreteInt>(this)->getValue().getZExtValue();
- if (cast<nonloc::ConcreteInt>(this)->getValue().isUnsigned())
- os << 'U';
- break;
- case nonloc::SymbolValKind:
- os << '$' << cast<nonloc::SymbolVal>(this)->getSymbol();
- break;
- case nonloc::SymExprValKind: {
- const nonloc::SymExprVal& C = *cast<nonloc::SymExprVal>(this);
- const SymExpr *SE = C.getSymbolicExpression();
- os << SE;
- break;
- }
- case nonloc::LocAsIntegerKind: {
- const nonloc::LocAsInteger& C = *cast<nonloc::LocAsInteger>(this);
- os << C.getLoc() << " [as " << C.getNumBits() << " bit integer]";
- break;
- }
- case nonloc::CompoundValKind: {
- const nonloc::CompoundVal& C = *cast<nonloc::CompoundVal>(this);
- os << "compoundVal{";
- bool first = true;
- for (nonloc::CompoundVal::iterator I=C.begin(), E=C.end(); I!=E; ++I) {
- if (first) {
- os << ' '; first = false;
- }
- else
- os << ", ";
-
- (*I).dumpToStream(os);
- }
- os << "}";
- break;
- }
- case nonloc::LazyCompoundValKind: {
- const nonloc::LazyCompoundVal &C = *cast<nonloc::LazyCompoundVal>(this);
- os << "lazyCompoundVal{" << const_cast<void *>(C.getStore())
- << ',' << C.getRegion()
- << '}';
- break;
- }
- default:
- assert (false && "Pretty-printed not implemented for this NonLoc.");
- break;
- }
-}
-
-void Loc::dumpToStream(llvm::raw_ostream& os) const {
- switch (getSubKind()) {
- case loc::ConcreteIntKind:
- os << cast<loc::ConcreteInt>(this)->getValue().getZExtValue() << " (Loc)";
- break;
- case loc::GotoLabelKind:
- os << "&&" << cast<loc::GotoLabel>(this)->getLabel()->getID()->getName();
- break;
- case loc::MemRegionKind:
- os << '&' << cast<loc::MemRegionVal>(this)->getRegion()->getString();
- break;
- default:
- assert(false && "Pretty-printing not implemented for this Loc.");
- break;
- }
-}
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