[turbofan] add configuration parameters for register allocator

src/compiler/linkage.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_LINKAGE_H_
 #define V8_COMPILER_LINKAGE_H_
 
 #include "src/base/flags.h"
-#include "src/code-stubs.h"
 #include "src/compiler/frame.h"
 #include "src/compiler/machine-type.h"
-#include "src/compiler/node.h"
 #include "src/compiler/operator.h"
 #include "src/zone.h"
 
 namespace v8 {
 namespace internal {
+
+class CallInterfaceDescriptor;
+
 namespace compiler {
 
 // Describes the location for a parameter or a return value to a call.
 class LinkageLocation {
  public:
   explicit LinkageLocation(int location) : location_(location) {}
 
   static const int16_t ANY_REGISTER = 32767;
 
   static LinkageLocation AnyRegister() { return LinkageLocation(ANY_REGISTER); }
@@ skipping 148 matching lines @@
   CallDescriptor* GetJSCallDescriptor(int parameter_count) const;
   static CallDescriptor* GetJSCallDescriptor(int parameter_count, Zone* zone);
   CallDescriptor* GetRuntimeCallDescriptor(
       Runtime::FunctionId function, int parameter_count,
       Operator::Properties properties) const;
   static CallDescriptor* GetRuntimeCallDescriptor(
       Runtime::FunctionId function, int parameter_count,
       Operator::Properties properties, Zone* zone);
 
   CallDescriptor* GetStubCallDescriptor(
-      CallInterfaceDescriptor descriptor, int stack_parameter_count = 0,
+      const CallInterfaceDescriptor& descriptor, int stack_parameter_count = 0,
       CallDescriptor::Flags flags = CallDescriptor::kNoFlags) const;
   static CallDescriptor* GetStubCallDescriptor(
-      CallInterfaceDescriptor descriptor, int stack_parameter_count,
+      const CallInterfaceDescriptor& descriptor, int stack_parameter_count,
       CallDescriptor::Flags flags, Zone* zone);
 
   // Creates a call descriptor for simplified C calls that is appropriate
   // for the host platform. This simplified calling convention only supports
   // integers and pointers of one word size each, i.e. no floating point,
   // structs, pointers to members, etc.
   static CallDescriptor* GetSimplifiedCDescriptor(Zone* zone,
                                                   MachineSignature* sig);
 
   // Get the location of an (incoming) parameter to this function.
@@ skipping 28 matching lines @@
   CallDescriptor* const incoming_;
 
   DISALLOW_COPY_AND_ASSIGN(Linkage);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_LINKAGE_H_