Convert FastNewClosureStub into hydrogen.

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index 85f025594f9cfb6e7e533ab872a2ed23c51a1ed2..7e1081b9cbfa8cf69c4c8b13169fb00c9899ee85 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -3906,6 +3906,14 @@ void LCodeGen::DoCallRuntime(LCallRuntime* instr) {
 }
 
 
+void LCodeGen::DoStoreCodeEntry(LStoreCodeEntry* instr) {
+  Register function = ToRegister(instr->function());
+  Register code_object = ToRegister(instr->code_object());
+  __ lea(code_object, FieldOperand(code_object, Code::kHeaderSize));
+  __ movq(FieldOperand(function, JSFunction::kCodeEntryOffset), code_object);
+}
+
+
 void LCodeGen::DoInnerAllocatedObject(LInnerAllocatedObject* instr) {
   Register result = ToRegister(instr->result());
   Register base = ToRegister(instr->base_object());
@@ -5167,7 +5175,7 @@ void LCodeGen::DoFunctionLiteral(LFunctionLiteral* instr) {
   if (!pretenure && instr->hydrogen()->has_no_literals()) {
     FastNewClosureStub stub(instr->hydrogen()->language_mode(),
                             instr->hydrogen()->is_generator());
-    __ Push(instr->hydrogen()->shared_info());
+    __ Move(rbx, instr->hydrogen()->shared_info());
     CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr);
   } else {
     __ push(rsi);