- Pass the knowledge whether the old GC is compacting to the GC prologue and ...

src/stub-cache.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 263 matching lines @@
 class StubCompiler BASE_EMBEDDED {
  public:
   enum CheckType {
     RECEIVER_MAP_CHECK,
     STRING_CHECK,
     NUMBER_CHECK,
     BOOLEAN_CHECK,
     JSARRAY_HAS_FAST_ELEMENTS_CHECK
   };
 
-  StubCompiler() : masm_(NULL, 256) { }
+  StubCompiler() : scope_(), masm_(NULL, 256) { }
 
   Object* CompileCallInitialize(Code::Flags flags);
   Object* CompileCallPreMonomorphic(Code::Flags flags);
   Object* CompileCallNormal(Code::Flags flags);
   Object* CompileCallMegamorphic(Code::Flags flags);
   Object* CompileCallMiss(Code::Flags flags);
   Object* CompileCallDebugBreak(Code::Flags flags);
   Object* CompileCallDebugPrepareStepIn(Code::Flags flags);
   Object* CompileLazyCompile(Code::Flags flags);
 
@@ skipping 65 matching lines @@
                                  Register scratch,
                                  Label* miss_label);
   static void GenerateLoadMiss(MacroAssembler* masm, Code::Kind kind);
 
  protected:
   Object* GetCodeWithFlags(Code::Flags flags);
 
   MacroAssembler* masm() { return &masm_; }
 
  private:
+  HandleScope scope_;

[Kasper Lund, 2009/02/25 15:00:19]

This should allow you to get rid of a lot of HandleScopes inside the GenerateXXX
functions.

[iposva, 2009/02/25 16:42:54]

Done.

   MacroAssembler masm_;
 };
 
 
 class LoadStubCompiler: public StubCompiler {
  public:
   Object* CompileLoadField(JSObject* object, JSObject* holder, int index);
   Object* CompileLoadCallback(JSObject* object,
                               JSObject* holder,
                               AccessorInfo* callback);
@@ skipping 81 matching lines @@
 
   const ParameterCount& arguments() { return arguments_; }
 
   Object* GetCode(PropertyType type);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_STUB_CACHE_H_