MIPS: Only flush SharedFunctionInfo optimized code cache when necessary

src/mips/deoptimizer-mips.cc

Index: src/mips/deoptimizer-mips.cc
diff --git a/src/mips/deoptimizer-mips.cc b/src/mips/deoptimizer-mips.cc
index 7cc54445afc6ae0366e7916fba1dcb333ea6acb9..0b0c128d172b99650807dbaf7a6ad59b189ed818 100644
--- a/src/mips/deoptimizer-mips.cc
+++ b/src/mips/deoptimizer-mips.cc
@@ -1,3 +1,4 @@
+
 // 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
@@ -51,14 +52,13 @@ void Deoptimizer::DeoptimizeFunctionWithPreparedFunctionList(
   ASSERT(function->IsOptimized());
   ASSERT(function->FunctionsInFunctionListShareSameCode());
 
-  // The optimized code is going to be patched, so we cannot use it
-  // any more.  Play safe and reset the whole cache.
-  function->shared()->ClearOptimizedCodeMap("deoptimized function");
-
   // Get the optimized code.
   Code* code = function->code();
   Address code_start_address = code->instruction_start();
 
+  // The optimized code is going to be patched, so we cannot use it any more.
+  function->shared()->EvictFromOptimizedCodeMap(code, "deoptimized function");
+
   // Invalidate the relocation information, as it will become invalid by the
   // code patching below, and is not needed any more.
   code->InvalidateRelocation();