Inlined load of string.length and array.length....

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 413 matching lines @@
     // Patch the code to invoke the builtin debug break function matching the
     // calling convention used by the call site.
     Handle<Code> dbgbrk_code(Debug::FindDebugBreak(code, mode));
     rinfo()->set_target_address(dbgbrk_code->entry());
 
     // For stubs that refer back to an inlined version clear the cached map for
     // the inlined case to always go through the IC. As long as the break point
     // is set the patching performed by the runtime system will take place in
     // the code copy and will therefore have no effect on the running code
     // keeping it from using the inlined code.
-    if (code->is_keyed_load_stub()) KeyedLoadIC::ClearInlinedVersion(pc());
-    if (code->is_keyed_store_stub()) KeyedStoreIC::ClearInlinedVersion(pc());
+    if (code->is_keyed_load_stub()) {
+      KeyedLoadIC::ClearInlinedVersion(pc());
+    } else if (code->is_keyed_store_stub()) {
+      KeyedStoreIC::ClearInlinedVersion(pc());
+    } else if (code->is_load_stub()) {
+      LoadIC::ClearInlinedVersion(pc());
+    }
   }
 }
 
 
 void BreakLocationIterator::ClearDebugBreakAtIC() {
   // Patch the code to the original invoke.
   rinfo()->set_target_address(original_rinfo()->target_address());
 
   RelocInfo::Mode mode = rmode();
   if (RelocInfo::IsCodeTarget(mode)) {
@@ skipping 2356 matching lines @@
     {
       Locker locker;
       Debugger::CallMessageDispatchHandler();
     }
   }
 }
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 } }  // namespace v8::internal