Support optimization of named function literals.

src/arm/lithium-arm.h

Index: src/arm/lithium-arm.h
diff --git a/src/arm/lithium-arm.h b/src/arm/lithium-arm.h
index 1dbdd19c8c795ba1fb9093c3c514140d0eda67e0..817d780e333d35aab1b198a74c690b72f55b9084 100644
--- a/src/arm/lithium-arm.h
+++ b/src/arm/lithium-arm.h
@@ -169,6 +169,7 @@ class LCodeGen;
   V(StringLength)                               \
   V(SubI)                                       \
   V(TaggedToI)                                  \
+  V(ThisFunction)                               \
   V(Throw)                                      \
   V(ToFastProperties)                           \
   V(Typeof)                                     \
@@ -1440,6 +1441,11 @@ class LPushArgument: public LTemplateInstruction<0, 1, 0> {
 };
 
 
+class LThisFunction: public LTemplateInstruction<1, 0, 0> {
+  DECLARE_CONCRETE_INSTRUCTION(ThisFunction, "this-function")
+};
+
+
 class LContext: public LTemplateInstruction<1, 0, 0> {
  public:
   DECLARE_CONCRETE_INSTRUCTION(Context, "context")