Eliminate Turbofan shims with CodeFactory

src/code-factory.h

+// Copyright 2012 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_CODE_FACTORY_H_
+#define V8_CODE_FACTORY_H_
+
+#include "src/allocation.h"
+#include "src/assembler.h"
+#include "src/codegen.h"
+#include "src/globals.h"
+#include "src/interface-descriptors.h"
+
+namespace v8 {
+namespace internal {
+
+// Associates a body of code with a descriptor.

[Michael Starzinger, 2014/09/11 12:26:54]

nit: s/descriptor/interface descriptor/ for clarity.

+class Callable FINAL {

[Michael Starzinger, 2014/09/11 12:26:54]

nit: Could we maybe even make this class BASE_EMBEDDED?

+ public:
+  Callable(Handle<Code> code, CallInterfaceDescriptor descriptor)
+      : code_(code), descriptor_(descriptor) {}
+
+  Handle<Code> code() const { return code_; }
+  CallInterfaceDescriptor descriptor() const { return descriptor_; }
+
+ private:
+  const Handle<Code> code_;
+  const CallInterfaceDescriptor descriptor_;
+};
+
+
+class CodeFactory FINAL {
+ public:
+  // Initial states for ICs.
+  static Callable LoadIC(Isolate* isolate, ContextualMode mode);
+  static Callable KeyedLoadIC(Isolate* isolate);
+  static Callable StoreIC(Isolate* isolate, StrictMode mode);
+  static Callable KeyedStoreIC(Isolate* isolate, StrictMode mode);
+
+  static Callable CompareIC(Isolate* isolate, Token::Value op);
+
+  static Callable BinaryOpIC(Isolate* isolate, Token::Value op,
+                             OverwriteMode mode = NO_OVERWRITE);
+
+  // Code stubs. Add methods here as needed to reduce dependency on
+  // code-stubs.h.
+  static Callable ToBoolean(
+      Isolate* isolate, ToBooleanStub::ResultMode mode,
+      ToBooleanStub::Types types = ToBooleanStub::Types());
+
+  static Callable ToNumber(Isolate* isolate);
+
+  static Callable StringAdd(Isolate* isolate, StringAddFlags flags,
+                            PretenureFlag pretenure_flag);
+
+  static Callable CallFunction(Isolate* isolate, int argc,
+                               CallFunctionFlags flags);
+};
+}
+}
+#endif  // V8_CODE_FACTORY_H_