Merge ValueManager into SValBuilder.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120696 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Checker/SValBuilder.cpp b/lib/Checker/SValBuilder.cpp
index 28e9de8..7216b70 100644
--- a/lib/Checker/SValBuilder.cpp
+++ b/lib/Checker/SValBuilder.cpp
@@ -12,11 +12,153 @@
//
//===----------------------------------------------------------------------===//
+#include "clang/Checker/PathSensitive/MemRegion.h"
+#include "clang/Checker/PathSensitive/SVals.h"
#include "clang/Checker/PathSensitive/SValBuilder.h"
#include "clang/Checker/PathSensitive/GRState.h"
+#include "clang/Checker/PathSensitive/BasicValueFactory.h"
using namespace clang;
+//===----------------------------------------------------------------------===//
+// Basic SVal creation.
+//===----------------------------------------------------------------------===//
+
+DefinedOrUnknownSVal SValBuilder::makeZeroVal(QualType T) {
+ if (Loc::IsLocType(T))
+ return makeNull();
+
+ if (T->isIntegerType())
+ return makeIntVal(0, T);
+
+ // FIXME: Handle floats.
+ // FIXME: Handle structs.
+ return UnknownVal();
+}
+
+
+NonLoc SValBuilder::makeNonLoc(const SymExpr *lhs, BinaryOperator::Opcode op,
+ const llvm::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 SValBuilder::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 SValBuilder::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 evalCastNL(cast<NonLoc>(V), ArrayIndexTy);
+}
+
+DefinedOrUnknownSVal
+SValBuilder::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 SValBuilder::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 SValBuilder::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 SValBuilder::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
+SValBuilder::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 SValBuilder::getFunctionPointer(const FunctionDecl* FD) {
+ return loc::MemRegionVal(MemMgr.getFunctionTextRegion(FD));
+}
+
+DefinedSVal SValBuilder::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);
+}
+
+//===----------------------------------------------------------------------===//
SVal SValBuilder::evalBinOp(const GRState *ST, BinaryOperator::Opcode Op,
SVal L, SVal R, QualType T) {
@@ -50,7 +192,7 @@
DefinedOrUnknownSVal L,
DefinedOrUnknownSVal R) {
return cast<DefinedOrUnknownSVal>(evalBinOp(ST, BO_EQ, L, R,
- ValMgr.getContext().IntTy));
+ Context.IntTy));
}
// FIXME: should rewrite according to the cast kind.
@@ -58,11 +200,9 @@
if (val.isUnknownOrUndef() || castTy == originalTy)
return val;
- ASTContext &C = ValMgr.getContext();
-
// For const casts, just propagate the value.
if (!castTy->isVariableArrayType() && !originalTy->isVariableArrayType())
- if (C.hasSameUnqualifiedType(castTy, originalTy))
+ if (Context.hasSameUnqualifiedType(castTy, originalTy))
return val;
// Check for casts to real or complex numbers. We don't handle these at all
@@ -82,7 +222,7 @@
if (Loc::IsLocType(castTy) && originalTy->isIntegerType()) {
if (nonloc::LocAsInteger *LV = dyn_cast<nonloc::LocAsInteger>(&val)) {
if (const MemRegion *R = LV->getLoc().getAsRegion()) {
- StoreManager &storeMgr = ValMgr.getStateManager().getStoreManager();
+ StoreManager &storeMgr = StateMgr.getStoreManager();
R = storeMgr.CastRegion(R, castTy);
return R ? SVal(loc::MemRegionVal(R)) : UnknownVal();
}
@@ -100,7 +240,7 @@
// Check for casts from array type to another type.
if (originalTy->isArrayType()) {
// We will always decay to a pointer.
- val = ValMgr.getStateManager().ArrayToPointer(cast<Loc>(val));
+ val = StateMgr.ArrayToPointer(cast<Loc>(val));
// Are we casting from an array to a pointer? If so just pass on
// the decayed value.
@@ -153,7 +293,7 @@
assert(Loc::IsLocType(originalTy) || originalTy->isFunctionType() ||
originalTy->isBlockPointerType());
- StoreManager &storeMgr = ValMgr.getStateManager().getStoreManager();
+ StoreManager &storeMgr = StateMgr.getStoreManager();
// Delegate to store manager to get the result of casting a region to a
// different type. If the MemRegion* returned is NULL, this expression