Using RelocInfo instead of DebuggerStatementStub

src/debug.cc

 // 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 435 matching lines @@
     // fast case.  We need to patch back the keyed store because no
     // patching happens when running normally.  For keyed loads, the
     // map check will get patched back when running normally after ICs
     // have been cleared at GC.
     if (code->is_keyed_store_stub()) KeyedStoreIC::RestoreInlinedVersion(pc());
   }
 }
 
 
 bool BreakLocationIterator::IsDebuggerStatement() {
-  if (RelocInfo::IsCodeTarget(rmode())) {
-    Address target = original_rinfo()->target_address();
-    Code* code = Code::GetCodeFromTargetAddress(target);
-    if (code->kind() == Code::STUB) {
-      CodeStub::Major major_key = code->major_key();
-      return (major_key == CodeStub::DebuggerStatement);
-    }
-  }
-  return false;
+  return RelocInfo::DEBUG_BREAK == rmode();
 }
 
 
 Object* BreakLocationIterator::BreakPointObjects() {
   return debug_info_->GetBreakPointObjects(code_position());
 }
 
 
 // Clear out all the debug break code. This is ONLY supposed to be used when
 // shutting down the debugger as it will leave the break point information in
@@ skipping 2319 matching lines @@
     {
       Locker locker;
       Debugger::CallMessageDispatchHandler();
     }
   }
 }
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 } }  // namespace v8::internal