vendor/clang/clang-trunk-r351319

1 files changed, 14 insertions, 12 deletions

diff --git a/lib/StaticAnalyzer/Core/SimpleSValBuilder.cpp b/lib/StaticAnalyzer/Core/SimpleSValBuilder.cpp
index 62c54fc956a96..fc57cecac9cbf 100644
--- a/lib/StaticAnalyzer/Core/SimpleSValBuilder.cpp
+++ b/lib/StaticAnalyzer/Core/SimpleSValBuilder.cpp
@@ -454,12 +454,12 @@ static Optional<NonLoc> tryRearrange(ProgramStateRef State,
   QualType SingleTy;
 
   auto &Opts =
-    StateMgr.getOwningEngine()->getAnalysisManager().getAnalyzerOptions();
+    StateMgr.getOwningEngine().getAnalysisManager().getAnalyzerOptions();
 
   // FIXME: After putting complexity threshold to the symbols we can always
   //        rearrange additive operations but rearrange comparisons only if
   //        option is set.
-  if(!Opts.shouldAggressivelySimplifyBinaryOperation())
+  if(!Opts.ShouldAggressivelySimplifyBinaryOperation)
     return None;
 
   SymbolRef LSym = Lhs.getAsSymbol();
@@ -475,9 +475,6 @@ static Optional<NonLoc> tryRearrange(ProgramStateRef State,
     SingleTy = ResultTy;
     if (LSym->getType() != SingleTy)
       return None;
-    // Substracting unsigned integers is a nightmare.
-    if (!SingleTy->isSignedIntegerOrEnumerationType())
-      return None;
   } else {
     // Don't rearrange other operations.
     return None;
@@ -485,6 +482,10 @@ static Optional<NonLoc> tryRearrange(ProgramStateRef State,
 
   assert(!SingleTy.isNull() && "We should have figured out the type by now!");
 
+  // Rearrange signed symbolic expressions only
+  if (!SingleTy->isSignedIntegerOrEnumerationType())
+    return None;
+
   SymbolRef RSym = Rhs.getAsSymbol();
   if (!RSym || RSym->getType() != SingleTy)
     return None;
@@ -534,7 +535,7 @@ SVal SimpleSValBuilder::evalBinOpNN(ProgramStateRef state,
   while (1) {
     switch (lhs.getSubKind()) {
     default:
-      return makeSymExprValNN(state, op, lhs, rhs, resultTy);
+      return makeSymExprValNN(op, lhs, rhs, resultTy);
     case nonloc::PointerToMemberKind: {
       assert(rhs.getSubKind() == nonloc::PointerToMemberKind &&
              "Both SVals should have pointer-to-member-type");
@@ -582,7 +583,7 @@ SVal SimpleSValBuilder::evalBinOpNN(ProgramStateRef state,
               return makeTruthVal(true, resultTy);
             default:
               // This case also handles pointer arithmetic.
-              return makeSymExprValNN(state, op, InputLHS, InputRHS, resultTy);
+              return makeSymExprValNN(op, InputLHS, InputRHS, resultTy);
           }
       }
     }
@@ -624,7 +625,7 @@ SVal SimpleSValBuilder::evalBinOpNN(ProgramStateRef state,
       case BO_LE:
       case BO_GE:
         op = BinaryOperator::reverseComparisonOp(op);
-        // FALL-THROUGH
+        LLVM_FALLTHROUGH;
       case BO_EQ:
       case BO_NE:
       case BO_Add:
@@ -638,14 +639,14 @@ SVal SimpleSValBuilder::evalBinOpNN(ProgramStateRef state,
         // (~0)>>a
         if (LHSValue.isAllOnesValue() && LHSValue.isSigned())
           return evalCastFromNonLoc(lhs, resultTy);
-        // FALL-THROUGH
+        LLVM_FALLTHROUGH;
       case BO_Shl:
         // 0<<a and 0>>a
         if (LHSValue == 0)
           return evalCastFromNonLoc(lhs, resultTy);
-        return makeSymExprValNN(state, op, InputLHS, InputRHS, resultTy);
+        return makeSymExprValNN(op, InputLHS, InputRHS, resultTy);
       default:
-        return makeSymExprValNN(state, op, InputLHS, InputRHS, resultTy);
+        return makeSymExprValNN(op, InputLHS, InputRHS, resultTy);
       }
     }
     case nonloc::SymbolValKind: {
@@ -757,7 +758,7 @@ SVal SimpleSValBuilder::evalBinOpNN(ProgramStateRef state,
         return *V;
 
       // Give up -- this is not a symbolic expression we can handle.
-      return makeSymExprValNN(state, op, InputLHS, InputRHS, resultTy);
+      return makeSymExprValNN(op, InputLHS, InputRHS, resultTy);
     }
     }
   }
@@ -1201,6 +1202,7 @@ SVal SimpleSValBuilder::evalBinOpLN(ProgramStateRef state,
 
 const llvm::APSInt *SimpleSValBuilder::getKnownValue(ProgramStateRef state,
                                                    SVal V) {
+  V = simplifySVal(state, V);
   if (V.isUnknownOrUndef())
     return nullptr;