Add MachineSignature, which is an encapsulation of the machine types for parameters and return valu…

src/compiler/raw-machine-assembler.h

 // Copyright 2014 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_RAW_MACHINE_ASSEMBLER_H_
 #define V8_COMPILER_RAW_MACHINE_ASSEMBLER_H_
 
 #include "src/v8.h"
 
 #include "src/compiler/common-operator.h"
@@ skipping 29 matching lines @@
 
     BasicBlock* block_;
     bool used_;
     bool bound_;
     friend class RawMachineAssembler;
     DISALLOW_COPY_AND_ASSIGN(Label);
   };
 
   RawMachineAssembler(Graph* graph,
                       MachineCallDescriptorBuilder* call_descriptor_builder,
-                      MachineType word = MachineOperatorBuilder::pointer_rep());
+                      MachineType word = kMachPtr);
   virtual ~RawMachineAssembler() {}
 
   Isolate* isolate() const { return zone()->isolate(); }
   Zone* zone() const { return graph()->zone(); }
   MachineOperatorBuilder* machine() { return &machine_; }
   CommonOperatorBuilder* common() { return &common_; }
   CallDescriptor* call_descriptor() const {
     return call_descriptor_builder_->BuildCallDescriptor(zone());
   }
   int parameter_count() const {
@@ skipping 60 matching lines @@
   BasicBlock* current_block_;
 
   DISALLOW_COPY_AND_ASSIGN(RawMachineAssembler);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_RAW_MACHINE_ASSEMBLER_H_