Extend assembler with ability to produce comments for the generated code.

runtime/vm/code_generator_ia32.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_IA32.
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/code_generator.h"
 
 #include "lib/error.h"
@@ skipping 249 matching lines @@
 
 
 void CodeGenerator::FinalizeExceptionHandlers(const Code& code) {
   ASSERT(exception_handlers_list_ != NULL);
   const ExceptionHandlers& handlers = ExceptionHandlers::Handle(
       exception_handlers_list_->FinalizeExceptionHandlers(code.EntryPoint()));
   code.set_exception_handlers(handlers);
 }
 
 
+void CodeGenerator::FinalizeComments(const Code& code) {
+  code.set_comments(assembler_->GetCodeComments());
+}
+
+
 void CodeGenerator::GenerateLoadVariable(Register dst,
                                          const LocalVariable& variable) {
   if (variable.is_captured()) {
     // The variable lives in the context.
     intptr_t delta = context_level() - variable.owner()->context_level();
     ASSERT(delta >= 0);
     Register base = CTX;
     while (delta-- > 0) {
       __ movl(dst, FieldAddress(base, Context::parent_offset()));
       base = dst;
@@ skipping 2688 matching lines @@
   const Error& error = Error::Handle(
       Parser::FormatError(script, token_index, "Error", format, args));
   va_end(args);
   Isolate::Current()->long_jump_base()->Jump(1, error);
   UNREACHABLE();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32