Experimental: thread the virtual frame through the deferred code...

src/codegen.cc

 // Copyright 2007-2008 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 22 matching lines @@
 #include "prettyprinter.h"
 #include "scopeinfo.h"
 #include "runtime.h"
 #include "stub-cache.h"
 
 namespace v8 { namespace internal {
 
 DeferredCode::DeferredCode(CodeGenerator* generator)
   : masm_(generator->masm()),
     generator_(generator),
+    enter_(generator),
+    exit_(generator),
     statement_position_(masm_->last_statement_position()),
     position_(masm_->last_position()) {
   generator->AddDeferred(this);
 #ifdef DEBUG
   comment_ = "";
 #endif
 }
 
 
 void CodeGenerator::ProcessDeferred() {
   while (!deferred_.is_empty()) {
     DeferredCode* code = deferred_.RemoveLast();
     MacroAssembler* masm = code->masm();
     // Record position of deferred code stub.
     if (code->statement_position() != RelocInfo::kNoPosition) {
       masm->RecordStatementPosition(code->statement_position());
     }
     if (code->position() != RelocInfo::kNoPosition) {
       masm->RecordPosition(code->position());
     }
     // Bind labels and generate the code.
-    masm->bind(code->enter());
+    code->enter()->Bind();
     Comment cmnt(masm, code->comment());
     code->Generate();
     if (code->exit()->is_bound()) {
-      masm->jmp(code->exit());  // platform independent?
+      code->exit()->Jump();
     }
   }
 }
 
 
 // Generate the code. Takes a function literal, generates code for it, assemble
 // all the pieces into a Code object. This function is only to be called by
 // the compiler.cc code.
 Handle<Code> CodeGenerator::MakeCode(FunctionLiteral* flit,
                                      Handle<Script> script,
@@ skipping 36 matching lines @@
 
   // Generate code.
   const int initial_buffer_size = 4 * KB;
   CodeGenerator cgen(initial_buffer_size, script, is_eval);
   cgen.GenCode(flit);
   if (cgen.HasStackOverflow()) {
     ASSERT(!Top::has_pending_exception());
     return Handle<Code>::null();
   }
 
-  // Process any deferred code.
-  cgen.ProcessDeferred();
-
   // Allocate and install the code.
   CodeDesc desc;
   cgen.masm()->GetCode(&desc);
   ScopeInfo<> sinfo(flit->scope());
   Code::Flags flags = Code::ComputeFlags(Code::FUNCTION);
   Handle<Code> code = Factory::NewCode(desc, &sinfo, flags);
 
   // Add unresolved entries in the code to the fixup list.
   Bootstrapper::AddFixup(*code, cgen.masm());
 
@@ skipping 353 matching lines @@
 void ArgumentsAccessStub::Generate(MacroAssembler* masm) {
   switch (type_) {
     case READ_LENGTH: GenerateReadLength(masm); break;
     case READ_ELEMENT: GenerateReadElement(masm); break;
     case NEW_OBJECT: GenerateNewObject(masm); break;
   }
 }
 
 
 } }  // namespace v8::internal