Move logic of GRExprEngine::EvalBinOp to SValuator::EvalBinOp.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@80018 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Analysis/PathSensitive/GRExprEngine.h

@@ -592,8 +592,10 @@ public:
     return R.isValid() ? SVator.EvalBinOpNN(op, L, cast<NonLoc>(R), T) : R;
   }
   
-  SVal EvalBinOp(const GRState *state, BinaryOperator::Opcode op,
-                 SVal lhs, SVal rhs, QualType T);
+  SVal EvalBinOp(const GRState *ST, BinaryOperator::Opcode Op,
+                 SVal LHS, SVal RHS, QualType T) {
+    return SVator.EvalBinOp(ST, Op, LHS, RHS, T);
+  }
 
 protected:
   

include/clang/Analysis/PathSensitive/SValuator.h

@@ -59,6 +59,9 @@ public:
 
   virtual SVal EvalBinOpLN(const GRState *state, BinaryOperator::Opcode Op,
                            Loc lhs, NonLoc rhs, QualType resultTy) = 0;  
+  
+  SVal EvalBinOp(const GRState *ST, BinaryOperator::Opcode Op,
+                 SVal L, SVal R, QualType T);
 };
   
 SValuator* CreateSimpleSValuator(ValueManager &valMgr);

lib/Analysis/GRExprEngine.cpp

@@ -1354,9 +1354,11 @@ static bool EvalOSAtomicCompareAndSwap(ExplodedNodeSet& Dst,
     if (theValueVal.isUndef() || oldValueVal.isUndef()) {
       return false;      
     }
+    
+    SValuator &SVator = Engine.getSValuator();
         
     // Perform the comparison.
-    SVal Cmp = Engine.EvalBinOp(stateLoad, BinaryOperator::EQ, theValueVal,
+    SVal Cmp = SVator.EvalBinOp(stateLoad, BinaryOperator::EQ, theValueVal,
                                 oldValueVal, Engine.getContext().IntTy);
 
     const GRState *stateEqual = stateLoad->assume(Cmp, true);
@@ -1370,9 +1372,8 @@ static bool EvalOSAtomicCompareAndSwap(ExplodedNodeSet& Dst,
       // Handle implicit value casts.
       if (const TypedRegion *R =
           dyn_cast_or_null<TypedRegion>(location.getAsRegion())) {
-        llvm::tie(state, val) =
-          Engine.getSValuator().EvalCast(val, state, R->getValueType(C),
-                                         newValueExpr->getType());
+        llvm::tie(state, val) = SVator.EvalCast(val, state, R->getValueType(C),
+                                                newValueExpr->getType());
       }      
       
       Engine.EvalStore(TmpStore, theValueExpr, N, stateEqual, location, 
@@ -3032,39 +3033,6 @@ void GRExprEngine::VisitBinaryOperator(BinaryOperator* B,
   }
 }
 
-//===----------------------------------------------------------------------===//
-// Transfer-function Helpers.
-//===----------------------------------------------------------------------===//
-
-SVal GRExprEngine::EvalBinOp(const GRState* state, BinaryOperator::Opcode Op, 
-                             SVal L, SVal R, QualType T) {
-  
-  if (L.isUndef() || R.isUndef())
-    return UndefinedVal();
-  
-  if (L.isUnknown() || R.isUnknown())
-    return UnknownVal();
-  
-  if (isa<Loc>(L)) {
-    if (isa<Loc>(R))
-      return SVator.EvalBinOpLL(Op, cast<Loc>(L), cast<Loc>(R), T);
-    else
-      return SVator.EvalBinOpLN(state, Op, cast<Loc>(L), cast<NonLoc>(R), T);
-  }
-  
-  if (isa<Loc>(R)) {
-    // Support pointer arithmetic where the increment/decrement operand
-    // is on the left and the pointer on the right.
-    
-    assert (Op == BinaryOperator::Add || Op == BinaryOperator::Sub);
-    
-    // Commute the operands.
-    return SVator.EvalBinOpLN(state, Op, cast<Loc>(R), cast<NonLoc>(L), T);
-  }
-  else
-    return SVator.EvalBinOpNN(Op, cast<NonLoc>(L), cast<NonLoc>(R), T);
-}
-
 //===----------------------------------------------------------------------===//
 // Visualization.
 //===----------------------------------------------------------------------===//

lib/Analysis/SValuator.cpp

@@ -17,6 +17,35 @@
 
 using namespace clang;
 
+
+SVal SValuator::EvalBinOp(const GRState *ST, BinaryOperator::Opcode Op,
+                          SVal L, SVal R, QualType T) {
+
+  if (L.isUndef() || R.isUndef())
+    return UndefinedVal();
+  
+  if (L.isUnknown() || R.isUnknown())
+    return UnknownVal();
+  
+  if (isa<Loc>(L)) {
+    if (isa<Loc>(R))
+      return EvalBinOpLL(Op, cast<Loc>(L), cast<Loc>(R), T);
+
+    return EvalBinOpLN(ST, Op, cast<Loc>(L), cast<NonLoc>(R), T);
+  }
+  
+  if (isa<Loc>(R)) {
+    // Support pointer arithmetic where the increment/decrement operand
+    // is on the left and the pointer on the right.    
+    assert(Op == BinaryOperator::Add || Op == BinaryOperator::Sub);
+    
+    // Commute the operands.
+    return EvalBinOpLN(ST, Op, cast<Loc>(R), cast<NonLoc>(L), T);
+  }
+
+  return EvalBinOpNN(Op, cast<NonLoc>(L), cast<NonLoc>(R), T);  
+}
+
 SValuator::CastResult SValuator::EvalCast(SVal val, const GRState *state, 
                                           QualType castTy, QualType originalTy){