// Otherwise, make a SymIntExpr out of the expression.
return MakeSymIntVal(symIntExpr, op, *RHSValue, resultTy);
}
+ }
-
- } else if (isa<SymbolData>(Sym)) {
- // Does the symbol simplify to a constant? If so, "fold" the constant
- // by setting 'lhs' to a ConcreteInt and try again.
- if (const llvm::APSInt *Constant = state->getConstraintManager()
- .getSymVal(state, Sym)) {
- lhs = nonloc::ConcreteInt(*Constant);
- continue;
- }
-
- // Is the RHS a constant?
- if (const llvm::APSInt *RHSValue = getKnownValue(state, rhs))
- return MakeSymIntVal(Sym, op, *RHSValue, resultTy);
+ // Does the symbolic expression simplify to a constant?
+ // If so, "fold" the constant by setting 'lhs' to a ConcreteInt
+ // and try again.
+ ConstraintManager &CMgr = state->getConstraintManager();
+ if (const llvm::APSInt *Constant = CMgr.getSymVal(state, Sym)) {
+ lhs = nonloc::ConcreteInt(*Constant);
+ continue;
}
+ // Is the RHS a constant?
+ if (const llvm::APSInt *RHSValue = getKnownValue(state, rhs))
+ return MakeSymIntVal(Sym, op, *RHSValue, resultTy);
+
// Give up -- this is not a symbolic expression we can handle.
return makeSymExprValNN(state, op, InputLHS, InputRHS, resultTy);
}
// regions, though.
return UnknownVal();
- const MemSpaceRegion *LeftMS = LeftMR->getMemorySpace();
- const MemSpaceRegion *RightMS = RightMR->getMemorySpace();
- const MemSpaceRegion *UnknownMS = MemMgr.getUnknownRegion();
const MemRegion *LeftBase = LeftMR->getBaseRegion();
const MemRegion *RightBase = RightMR->getBaseRegion();
+ const MemSpaceRegion *LeftMS = LeftBase->getMemorySpace();
+ const MemSpaceRegion *RightMS = RightBase->getMemorySpace();
+ const MemSpaceRegion *UnknownMS = MemMgr.getUnknownRegion();
// If the two regions are from different known memory spaces they cannot be
// equal. Also, assume that no symbolic region (whose memory space is
}
// If we get here, we have no way of comparing the ElementRegions.
- return UnknownVal();
}
// See if both regions are fields of the same structure.
llvm_unreachable("Fields not found in parent record's definition");
}
+ // At this point we're not going to get a good answer, but we can try
+ // conjuring an expression instead.
+ SymbolRef LHSSym = lhs.getAsLocSymbol();
+ SymbolRef RHSSym = rhs.getAsLocSymbol();
+ if (LHSSym && RHSSym)
+ return makeNonLoc(LHSSym, op, RHSSym, resultTy);
+
// If we get here, we have no way of comparing the regions.
return UnknownVal();
}