diff options
Diffstat (limited to 'contrib/llvm/tools/clang/lib/Checker/ValueManager.cpp')
-rw-r--r-- | contrib/llvm/tools/clang/lib/Checker/ValueManager.cpp | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/contrib/llvm/tools/clang/lib/Checker/ValueManager.cpp b/contrib/llvm/tools/clang/lib/Checker/ValueManager.cpp deleted file mode 100644 index 8b7cd7b..0000000 --- a/contrib/llvm/tools/clang/lib/Checker/ValueManager.cpp +++ /dev/null @@ -1,162 +0,0 @@ -//== ValueManager.cpp - Aggregate manager of symbols and SVals --*- 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 ValueManager, a class that manages symbolic values -// and SVals created for use by GRExprEngine and related classes. It -// wraps and owns SymbolManager, MemRegionManager, and BasicValueFactory. -// -//===----------------------------------------------------------------------===// - -#include "clang/Checker/PathSensitive/ValueManager.h" -#include "clang/Analysis/AnalysisContext.h" - -using namespace clang; -using namespace llvm; - -//===----------------------------------------------------------------------===// -// Utility methods for constructing SVals. -//===----------------------------------------------------------------------===// - -DefinedOrUnknownSVal ValueManager::makeZeroVal(QualType T) { - if (Loc::IsLocType(T)) - return makeNull(); - - if (T->isIntegerType()) - return makeIntVal(0, T); - - // FIXME: Handle floats. - // FIXME: Handle structs. - return UnknownVal(); -} - -//===----------------------------------------------------------------------===// -// Utility methods for constructing Non-Locs. -//===----------------------------------------------------------------------===// - -NonLoc ValueManager::makeNonLoc(const SymExpr *lhs, BinaryOperator::Opcode op, - const APSInt& v, QualType T) { - // The Environment ensures we always get a persistent APSInt in - // BasicValueFactory, so we don't need to get the APSInt from - // BasicValueFactory again. - assert(!Loc::IsLocType(T)); - return nonloc::SymExprVal(SymMgr.getSymIntExpr(lhs, op, v, T)); -} - -NonLoc ValueManager::makeNonLoc(const SymExpr *lhs, BinaryOperator::Opcode op, - const SymExpr *rhs, QualType T) { - assert(SymMgr.getType(lhs) == SymMgr.getType(rhs)); - assert(!Loc::IsLocType(T)); - return nonloc::SymExprVal(SymMgr.getSymSymExpr(lhs, op, rhs, T)); -} - - -SVal ValueManager::convertToArrayIndex(SVal V) { - if (V.isUnknownOrUndef()) - return V; - - // Common case: we have an appropriately sized integer. - if (nonloc::ConcreteInt* CI = dyn_cast<nonloc::ConcreteInt>(&V)) { - const llvm::APSInt& I = CI->getValue(); - if (I.getBitWidth() == ArrayIndexWidth && I.isSigned()) - return V; - } - - return SVator->EvalCastNL(cast<NonLoc>(V), ArrayIndexTy); -} - -DefinedOrUnknownSVal -ValueManager::getRegionValueSymbolVal(const TypedRegion* R) { - QualType T = R->getValueType(); - - if (!SymbolManager::canSymbolicate(T)) - return UnknownVal(); - - SymbolRef sym = SymMgr.getRegionValueSymbol(R); - - if (Loc::IsLocType(T)) - return loc::MemRegionVal(MemMgr.getSymbolicRegion(sym)); - - return nonloc::SymbolVal(sym); -} - -DefinedOrUnknownSVal ValueManager::getConjuredSymbolVal(const void *SymbolTag, - const Expr *E, - unsigned Count) { - QualType T = E->getType(); - - if (!SymbolManager::canSymbolicate(T)) - return UnknownVal(); - - SymbolRef sym = SymMgr.getConjuredSymbol(E, Count, SymbolTag); - - if (Loc::IsLocType(T)) - return loc::MemRegionVal(MemMgr.getSymbolicRegion(sym)); - - return nonloc::SymbolVal(sym); -} - -DefinedOrUnknownSVal ValueManager::getConjuredSymbolVal(const void *SymbolTag, - const Expr *E, - QualType T, - unsigned Count) { - - if (!SymbolManager::canSymbolicate(T)) - return UnknownVal(); - - SymbolRef sym = SymMgr.getConjuredSymbol(E, T, Count, SymbolTag); - - if (Loc::IsLocType(T)) - return loc::MemRegionVal(MemMgr.getSymbolicRegion(sym)); - - return nonloc::SymbolVal(sym); -} - -DefinedSVal ValueManager::getMetadataSymbolVal(const void *SymbolTag, - const MemRegion *MR, - const Expr *E, QualType T, - unsigned Count) { - assert(SymbolManager::canSymbolicate(T) && "Invalid metadata symbol type"); - - SymbolRef sym = SymMgr.getMetadataSymbol(MR, E, T, Count, SymbolTag); - - if (Loc::IsLocType(T)) - return loc::MemRegionVal(MemMgr.getSymbolicRegion(sym)); - - return nonloc::SymbolVal(sym); -} - -DefinedOrUnknownSVal -ValueManager::getDerivedRegionValueSymbolVal(SymbolRef parentSymbol, - const TypedRegion *R) { - QualType T = R->getValueType(); - - if (!SymbolManager::canSymbolicate(T)) - return UnknownVal(); - - SymbolRef sym = SymMgr.getDerivedSymbol(parentSymbol, R); - - if (Loc::IsLocType(T)) - return loc::MemRegionVal(MemMgr.getSymbolicRegion(sym)); - - return nonloc::SymbolVal(sym); -} - -DefinedSVal ValueManager::getFunctionPointer(const FunctionDecl* FD) { - return loc::MemRegionVal(MemMgr.getFunctionTextRegion(FD)); -} - -DefinedSVal ValueManager::getBlockPointer(const BlockDecl *D, - CanQualType locTy, - const LocationContext *LC) { - const BlockTextRegion *BC = - MemMgr.getBlockTextRegion(D, locTy, LC->getAnalysisContext()); - const BlockDataRegion *BD = MemMgr.getBlockDataRegion(BC, LC); - return loc::MemRegionVal(BD); -} - |