Support optimization of named function literals.

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index 01f95a706496c54fda400dd3ed75c04fbaa29c05..03ca4aa4dee160f6e2a8dee999cc47c74a115c2f 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -2787,6 +2787,12 @@ void LCodeGen::DoPushArgument(LPushArgument* instr) {
 }
 
 
+void LCodeGen::DoThisFunction(LThisFunction* instr) {
+  Register result = ToRegister(instr->result());
+  __ ldr(result, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
+}
+
+
 void LCodeGen::DoContext(LContext* instr) {
   Register result = ToRegister(instr->result());
   __ mov(result, cp);