[Isolates] Merge (7083,7111] from bleeding_edge.

src/jsregexp.cc

Index: src/jsregexp.cc
diff --git a/src/jsregexp.cc b/src/jsregexp.cc
index 9d6034812569637b737a25727e96efd51c13b3bc..af03e75afcb77fd8cef48bc65ff5cae185306aa8 100644
--- a/src/jsregexp.cc
+++ b/src/jsregexp.cc
@@ -875,9 +875,11 @@ RegExpEngine::CompilationResult RegExpCompiler::Assemble(
   if (reg_exp_too_big_) return IrregexpRegExpTooBig();
 
   Handle<Object> code = macro_assembler_->GetCode(pattern);
-
   work_list_ = NULL;
 #ifdef DEBUG
+  if (FLAG_print_code) {
+    Handle<Code>::cast(code)->Disassemble(*pattern->ToCString());
+  }
   if (FLAG_trace_regexp_assembler) {
     delete macro_assembler_;
   }