Removing redundant stub for runtime native calls.

src/codegen.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 163 matching lines @@
   Label exit_label_;
 
   int registers_[RegisterAllocator::kNumRegisters];
 
 #ifdef DEBUG
   const char* comment_;
 #endif
   DISALLOW_COPY_AND_ASSIGN(DeferredCode);
 };
 
-
-// RuntimeStub models code stubs calling entry points in the Runtime class.
-class RuntimeStub : public CodeStub {
- public:
-  explicit RuntimeStub(Runtime::FunctionId id, int num_arguments)
-      : id_(id), num_arguments_(num_arguments) { }
-
-  void Generate(MacroAssembler* masm);
-
-  // Disassembler support.  It is useful to be able to print the name
-  // of the runtime function called through this stub.
-  static const char* GetNameFromMinorKey(int minor_key) {
-    return Runtime::FunctionForId(IdField::decode(minor_key))->stub_name;
-  }
-
- private:
-  Runtime::FunctionId id_;
-  int num_arguments_;
-
-  class ArgumentField: public BitField<int,  0, 16> {};
-  class IdField: public BitField<Runtime::FunctionId, 16, kMinorBits - 16> {};
-
-  Major MajorKey() { return Runtime; }
-  int MinorKey() {
-    return IdField::encode(id_) | ArgumentField::encode(num_arguments_);
-  }
-
-  const char* GetName();
-
-#ifdef DEBUG
-  void Print() {
-    PrintF("RuntimeStub (id %s)\n", Runtime::FunctionForId(id_)->name);
-  }
-#endif
-};
-
-
 class StackCheckStub : public CodeStub {
  public:
   StackCheckStub() { }
 
   void Generate(MacroAssembler* masm);
 
  private:
 
   const char* GetName() { return "StackCheckStub"; }
 
@@ skipping 184 matching lines @@
   Major MajorKey() { return NoCache; }
   int MinorKey() { return 0; }
   const char* GetName() { return "ApiEntryStub"; }
   // The accessor info associated with the function.
   Handle<AccessorInfo> info_;
   // The function to be called.
   ApiFunction* fun_;
 };
 
 
-class CEntryDebugBreakStub : public CEntryStub {
+// Mark the debugger statemet to be recognized bu debugger (by the MajorKey)
+class DebugerStatementStub : public CodeStub {
  public:
-  CEntryDebugBreakStub() : CEntryStub(1) { }
+  DebugerStatementStub() { }
 
-  void Generate(MacroAssembler* masm) { GenerateBody(masm, true); }
+  void Generate(MacroAssembler* masm);
 
  private:
-  int MinorKey() { return 1; }
+  Major MajorKey() { return DebuggerStatement; }
+  int MinorKey() { return 0; }
 
-  const char* GetName() { return "CEntryDebugBreakStub"; }
+  const char* GetName() { return "DebugerStatementStub"; }
 };
 
 
 class JSEntryStub : public CodeStub {
  public:
   JSEntryStub() { }
 
   void Generate(MacroAssembler* masm) { GenerateBody(masm, false); }
 
  protected:
@@ skipping 126 matching lines @@
  private:
   Major MajorKey() { return ToBoolean; }
   int MinorKey() { return 0; }
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CODEGEN_H_