Removing BinaryOpIC::Clear. This method relied on some less-than-obvious hack...

src/ia32/codegen-ia32.cc

 // Copyright 2010 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 9500 matching lines @@
       break;
     case Token::SHL:
       __ InvokeBuiltin(Builtins::SHL, JUMP_FUNCTION);
       break;
     case Token::SHR:
       __ InvokeBuiltin(Builtins::SHR, JUMP_FUNCTION);
       break;
     default:
       UNREACHABLE();
   }
-
-  // Generate an unreachable reference to the DEFAULT stub so that it can be
-  // found at the end of this stub when clearing ICs at GC.
-  if (runtime_operands_type_ != BinaryOpIC::DEFAULT) {
-    GenericBinaryOpStub uninit(MinorKey(), BinaryOpIC::DEFAULT);
-    __ TailCallStub(&uninit);
-  }
 }
 
 
 void GenericBinaryOpStub::GenerateHeapResultAllocation(MacroAssembler* masm,
                                                        Label* alloc_failure) {
   Label skip_allocation;
   OverwriteMode mode = mode_;
   if (HasArgsReversed()) {
     if (mode == OVERWRITE_RIGHT) {
       mode = OVERWRITE_LEFT;
@@ skipping 3114 matching lines @@
 
   // Call the runtime; it returns -1 (less), 0 (equal), or 1 (greater)
   // tagged as a small integer.
   __ bind(&runtime);
   __ TailCallRuntime(Runtime::kStringCompare, 2, 1);
 }
 
 #undef __
 
 } }  // namespace v8::internal