Allow redirecting disassembly and deoptimization traces into a file.

src/jsregexp.cc

 // Copyright 2012 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 1132 matching lines @@
   while (!work_list.is_empty()) {
     work_list.RemoveLast()->Emit(this, &new_trace);
   }
   if (reg_exp_too_big_) return IrregexpRegExpTooBig(zone_->isolate());
 
   Handle<HeapObject> code = macro_assembler_->GetCode(pattern);
   heap->IncreaseTotalRegexpCodeGenerated(code->Size());
   work_list_ = NULL;
 #ifdef DEBUG
   if (FLAG_print_code) {
-    Handle<Code>::cast(code)->Disassemble(*pattern->ToCString());
+    CodeTracer::Scope trace_scope(heap->isolate()->GetCodeTracer());
+    Handle<Code>::cast(code)->Disassemble(*pattern->ToCString(),
+                                          trace_scope.file());
   }
   if (FLAG_trace_regexp_assembler) {
     delete macro_assembler_;
   }
 #endif
   return RegExpEngine::CompilationResult(*code, next_register_);
 }
 
 
 bool Trace::DeferredAction::Mentions(int that) {
@@ skipping 4947 matching lines @@
   }
 
   return compiler.Assemble(&macro_assembler,
                            node,
                            data->capture_count,
                            pattern);
 }
 
 
 }}  // namespace v8::internal