Second attempt: Improve our type feedback by recogizining never-executed IC c...

src/ia32/lithium-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 297 matching lines @@
     LPointerMap* pointers = instr->pointer_map();
     RecordPosition(pointers->position());
     __ call(code, mode);
     RegisterLazyDeoptimization(instr);
   } else {
     LPointerMap no_pointers(0);
     RecordPosition(no_pointers.position());
     __ call(code, mode);
     RecordSafepoint(&no_pointers, Safepoint::kNoDeoptimizationIndex);
   }
+
+  // Signal that we don't inline smi code before these stubs in the
+  // optimizing code generator.
+  if (code->kind() == Code::TYPE_RECORDING_BINARY_OP_IC ||
+      code->kind() == Code::COMPARE_IC) {
+    __ nop();
+  }
 }
 
 
 void LCodeGen::CallRuntime(Runtime::Function* function,
                            int num_arguments,
                            LInstruction* instr) {
   ASSERT(instr != NULL);
   LPointerMap* pointers = instr->pointer_map();
   ASSERT(pointers != NULL);
   RecordPosition(pointers->position());
@@ skipping 2838 matching lines @@
   ASSERT(!environment->HasBeenRegistered());
   RegisterEnvironmentForDeoptimization(environment);
   ASSERT(osr_pc_offset_ == -1);
   osr_pc_offset_ = masm()->pc_offset();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal