Optimize the equality check case of ICCompare stubs.

src/heap.h

 // Copyright 2011 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 217 matching lines @@
   V(failure_symbol, "<failure>")                                         \
   V(space_symbol, " ")                                                   \
   V(exec_symbol, "exec")                                                 \
   V(zero_symbol, "0")                                                    \
   V(global_eval_symbol, "GlobalEval")                                    \
   V(identity_hash_symbol, "v8::IdentityHash")                            \
   V(closure_symbol, "(closure)")                                         \
   V(use_strict, "use strict")                                            \
   V(dot_symbol, ".")                                                     \
   V(anonymous_function_symbol, "(anonymous function)")                   \
+  V(compare_ic_symbol, "compare_ic")                                     \

[Kevin Millikin (Chromium), 2011/12/08 13:38:15]

Maybe choose a symbol that isn't a valid identifier so it is less likely to
clash with property names?

[Rico, 2011/12/08 15:54:56]

Done.

   V(infinity_symbol, "Infinity")                                         \
   V(minus_infinity_symbol, "-Infinity")
 
 // Forward declarations.
 class GCTracer;
 class HeapStats;
 class Isolate;
 class WeakObjectRetainer;
 
 
@@ skipping 2281 matching lines @@
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG || LIVE_OBJECT_LIST
 
 } }  // namespace v8::internal
 
 #undef HEAP
 
 #endif  // V8_HEAP_H_