Replace ICStub for array.length with hydrogen stub

src/x64/code-stubs-x64.cc

Index: src/x64/code-stubs-x64.cc
diff --git a/src/x64/code-stubs-x64.cc b/src/x64/code-stubs-x64.cc
index 04c3e6837b05fe3853fc2888c8af71ce6feb4df7..977d89429976a66ed507324fc25344985e6f6963 100644
--- a/src/x64/code-stubs-x64.cc
+++ b/src/x64/code-stubs-x64.cc
@@ -2375,34 +2375,6 @@ void MathPowStub::Generate(MacroAssembler* masm) {
 }
 
 
-void ArrayLengthStub::Generate(MacroAssembler* masm) {
-  Label miss;
-  Register receiver;
-  if (kind() == Code::KEYED_LOAD_IC) {
-    // ----------- S t a t e -------------
-    //  -- rax    : key
-    //  -- rdx    : receiver
-    //  -- rsp[0] : return address
-    // -----------------------------------
-    __ Cmp(rax, masm->isolate()->factory()->length_string());
-    __ j(not_equal, &miss);
-    receiver = rdx;
-  } else {
-    ASSERT(kind() == Code::LOAD_IC);
-    // ----------- S t a t e -------------
-    //  -- rax    : receiver
-    //  -- rcx    : name
-    //  -- rsp[0] : return address
-    // -----------------------------------
-    receiver = rax;
-  }
-
-  StubCompiler::GenerateLoadArrayLength(masm, receiver, r8, &miss);
-  __ bind(&miss);
-  StubCompiler::TailCallBuiltin(masm, StubCompiler::MissBuiltin(kind()));
-}
-
-
 void FunctionPrototypeStub::Generate(MacroAssembler* masm) {
   Label miss;
   Register receiver;