Regression fix: HForceRepresentation shouldn't be an idef.

src/hydrogen-instructions.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 503 matching lines @@
       !(block()->IsReachable() ||
         IsBlockEntry() ||
         IsControlInstruction() ||
         IsSimulate() ||
         IsEnterInlined() ||
         IsLeaveInlined());
 }
 
 
 bool HValue::IsInteger32Constant() {
-  return IsConstant() && HConstant::cast(this)->HasInteger32Value();
+  HValue* value_to_check = IsForceRepresentation()
+      ? HForceRepresentation::cast(this)->value()
+      : this;
+  return value_to_check->IsConstant() &&
+      HConstant::cast(value_to_check)->HasInteger32Value();
 }
 
 
 int32_t HValue::GetInteger32Constant() {
-  return HConstant::cast(this)->Integer32Value();
+  HValue* constant_value = IsForceRepresentation()
+      ? HForceRepresentation::cast(this)->value()
+      : this;
+  return HConstant::cast(constant_value)->Integer32Value();
 }
 
 
 bool HValue::EqualsInteger32Constant(int32_t value) {
   return IsInteger32Constant() && GetInteger32Constant() == value;
 }
 
 
 void HValue::SetOperandAt(int index, HValue* value) {
   RegisterUse(index, value);
@@ skipping 3804 matching lines @@
       break;
     case kExternalMemory:
       stream->Add("[external-memory]");
       break;
   }
 
   stream->Add("@%d", offset());
 }
 
 } }  // namespace v8::internal