[Interpreter] Use existing type conversion stubs.

src/interpreter/interpreter.cc

 // Copyright 2015 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.
 
 #include "src/interpreter/interpreter.h"
 
 #include "src/ast/prettyprinter.h"
 #include "src/code-factory.h"
 #include "src/compiler.h"
 #include "src/factory.h"
@@ skipping 1206 matching lines @@
 
 
 // TestInstanceOf <src>
 //
 // Test if the object referenced by the <src> register is an an instance of type
 // referenced by the accumulator.
 void Interpreter::DoTestInstanceOf(InterpreterAssembler* assembler) {
   DoBinaryOp(Runtime::kInstanceOf, assembler);
 }
 
+void Interpreter::DoTypeConversionOp(Callable callable,
+                                     InterpreterAssembler* assembler) {
+  Node* target = __ HeapConstant(callable.code());
+  Node* accumulator = __ GetAccumulator();
+  Node* context = __ GetContext();
+  Node* result =
+      __ CallStub(callable.descriptor(), target, context, accumulator);
+  __ SetAccumulator(result);
+  __ Dispatch();
+}
 
 // ToName
 //
 // Cast the object referenced by the accumulator to a name.
 void Interpreter::DoToName(InterpreterAssembler* assembler) {
-  Node* accumulator = __ GetAccumulator();
-  Node* context = __ GetContext();
-  Node* result = __ CallRuntime(Runtime::kToName, context, accumulator);
-  __ SetAccumulator(result);
-  __ Dispatch();
+  DoTypeConversionOp(CodeFactory::ToName(isolate_), assembler);
 }
 
 
 // ToNumber
 //
 // Cast the object referenced by the accumulator to a number.
 void Interpreter::DoToNumber(InterpreterAssembler* assembler) {
-  Node* accumulator = __ GetAccumulator();
-  Node* context = __ GetContext();
-  Node* result = __ CallRuntime(Runtime::kToNumber, context, accumulator);
-  __ SetAccumulator(result);
-  __ Dispatch();
+  DoTypeConversionOp(CodeFactory::ToNumber(isolate_), assembler);
 }
 
 
 // ToObject
 //
 // Cast the object referenced by the accumulator to a JSObject.
 void Interpreter::DoToObject(InterpreterAssembler* assembler) {
-  Node* accumulator = __ GetAccumulator();
-  Node* context = __ GetContext();
-  Node* result = __ CallRuntime(Runtime::kToObject, context, accumulator);
-  __ SetAccumulator(result);
-  __ Dispatch();
+  DoTypeConversionOp(CodeFactory::ToObject(isolate_), assembler);
 }
 
 
 // Jump <imm8>
 //
 // Jump by number of bytes represented by the immediate operand |imm8|.
 void Interpreter::DoJump(InterpreterAssembler* assembler) {
   Node* relative_jump = __ BytecodeOperandImm(0);
   __ Jump(relative_jump);
 }
@@ skipping 569 matching lines @@
   Node* index = __ LoadRegister(index_reg);
   Node* context = __ GetContext();
   Node* result = __ CallRuntime(Runtime::kForInStep, context, index);
   __ SetAccumulator(result);
   __ Dispatch();
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8