Hydrogenized KeyedLoadGeneric stub: Fix BuildDecodeField

src/hydrogen.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_HYDROGEN_H_
 #define V8_HYDROGEN_H_
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 1293 matching lines @@
   static const int kElementLoopUnrollThreshold = 8;
 
  protected:
   virtual bool BuildGraph() = 0;
 
   HBasicBlock* CreateBasicBlock(HEnvironment* env);
   HBasicBlock* CreateLoopHeaderBlock();
 
   template <class BitFieldClass>
   HValue* BuildDecodeField(HValue* encoded_field) {
-    HValue* shifted_field = AddUncasted<HShr>(encoded_field,
+    HValue* mask_value = Add<HConstant>(static_cast<int>(BitFieldClass::kMask));
+    HValue* masked_field =
+        AddUncasted<HBitwise>(Token::BIT_AND, encoded_field, mask_value);
+    return AddUncasted<HShr>(masked_field,
         Add<HConstant>(static_cast<int>(BitFieldClass::kShift)));
-    HValue* mask_value = Add<HConstant>(static_cast<int>(BitFieldClass::kMask));
-    return AddUncasted<HBitwise>(Token::BIT_AND, shifted_field, mask_value);
   }
 
   HValue* BuildGetElementsKind(HValue* object);
 
   HValue* BuildCheckHeapObject(HValue* object);
   HValue* BuildCheckString(HValue* string);
   HValue* BuildWrapReceiver(HValue* object, HValue* function);
 
   // Building common constructs
   HValue* BuildCheckForCapacityGrow(HValue* object,
@@ skipping 1566 matching lines @@
   }
 
  private:
   HGraphBuilder* builder_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_