Cache optimized code on shared function info.

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index eb31d5aeeb339890dc7eb03f6f7b1f822d703720..59f6bab9a2e0b1f36f60cc2d500fa17830bbcf6e 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -339,7 +339,9 @@ void LCodeGen::WriteTranslation(LEnvironment* environment,
   int height = translation_size - environment->parameter_count();
 
   WriteTranslation(environment->outer(), translation);
-  int closure_id = DefineDeoptimizationLiteral(environment->closure());
+  int closure_id = *info()->closure() != *environment->closure()
+      ? DefineDeoptimizationLiteral(environment->closure())
+      : Translation::kSelfLiteralId;
   translation->BeginFrame(environment->ast_id(), closure_id, height);
   for (int i = 0; i < translation_size; ++i) {
     LOperand* value = environment->values()->at(i);