[turbofan] Support lowering of ChangeFloat64ToTagged/ChangeTaggedToInt32.

src/compiler/operator-properties-inl.h

 // Copyright 2013 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_COMPILER_OPERATOR_PROPERTIES_INL_H_
 #define V8_COMPILER_OPERATOR_PROPERTIES_INL_H_
 
 #include "src/v8.h"
 
 #include "src/compiler/js-operator.h"
@@ skipping 73 matching lines @@
 // -----------------------------------------------------------------------------
 // Output properties.
 
 inline bool OperatorProperties::HasValueOutput(Operator* op) {
   return GetValueOutputCount(op) > 0;
 }
 
 inline bool OperatorProperties::HasEffectOutput(Operator* op) {
   return op->opcode() == IrOpcode::kStart ||
          op->opcode() == IrOpcode::kControlEffect ||
+         op->opcode() == IrOpcode::kValueEffect ||
          (op->opcode() != IrOpcode::kFinish && GetEffectInputCount(op) > 0);
 }
 
 inline bool OperatorProperties::HasControlOutput(Operator* op) {
   IrOpcode::Value opcode = static_cast<IrOpcode::Value>(op->opcode());
   return (opcode != IrOpcode::kEnd && IrOpcode::IsControlOpcode(opcode)) ||
          CanLazilyDeoptimize(op);
 }
 
 
@@ skipping 67 matching lines @@
     default:
       return false;
   }
   return false;
 }
 }
 }
 }  // namespace v8::internal::compiler
 
 #endif  // V8_COMPILER_OPERATOR_PROPERTIES_INL_H_