[analyzer] Loc-Loc operations (subtraction or comparison) produce a NonLoc.

For two concrete locations, we were producing another concrete location and
then casting it to an integer. We should just create a nonloc::ConcreteInt
to begin with.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177805 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 4 deletions

diff --git a/lib/StaticAnalyzer/Core/SVals.cpp b/lib/StaticAnalyzer/Core/SVals.cpp
index da52a90ec5..38e216f28c 100644
--- a/lib/StaticAnalyzer/Core/SVals.cpp
+++ b/lib/StaticAnalyzer/Core/SVals.cpp
@@ -214,13 +214,12 @@ 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));
+  assert(BinaryOperator::isComparisonOp(Op) || Op == BO_Sub);
 
-  const llvm::APSInt* X = BasicVals.evalAPSInt(Op, getValue(), R.getValue());
+  const llvm::APSInt *X = BasicVals.evalAPSInt(Op, getValue(), R.getValue());
 
   if (X)
-    return loc::ConcreteInt(*X);
+    return nonloc::ConcreteInt(*X);
   else
     return UndefinedVal();
 }