Do not eagerly instantiate accessors' JSFunction.

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 fff0c69fa98746e3b9809deda6164896c27878cb..744326b6c3a5c53386b824e38fe04ae276eb52d9 100644
--- a/src/x64/code-stubs-x64.cc
+++ b/src/x64/code-stubs-x64.cc
@@ -5249,11 +5249,10 @@ static void CallApiFunctionAndReturn(MacroAssembler* masm,
   __ jmp(&leave_exit_frame);
 }
 
-
 static void CallApiFunctionStubHelper(MacroAssembler* masm,
                                       const ParameterCount& argc,
                                       bool return_first_arg,
-                                      bool call_data_undefined) {
+                                      bool call_data_undefined, bool is_lazy) {
   // ----------- S t a t e -------------
   //  -- rdi                 : callee
   //  -- rbx                 : call_data
@@ -5316,8 +5315,10 @@ static void CallApiFunctionStubHelper(MacroAssembler* masm,
   // Push return address back on stack.
   __ PushReturnAddressFrom(return_address);
 
-  // load context from callee
-  __ movp(context, FieldOperand(callee, JSFunction::kContextOffset));
+  if (!is_lazy) {
+    // load context from callee
+    __ movp(context, FieldOperand(callee, JSFunction::kContextOffset));
+  }
 
   // Allocate the v8::Arguments structure in the arguments' space since
   // it's not controlled by GC.
@@ -5390,7 +5391,7 @@ static void CallApiFunctionStubHelper(MacroAssembler* masm,
 void CallApiFunctionStub::Generate(MacroAssembler* masm) {
   bool call_data_undefined = this->call_data_undefined();
   CallApiFunctionStubHelper(masm, ParameterCount(rax), false,
-                            call_data_undefined);
+                            call_data_undefined, false);
 }
 
 
@@ -5398,8 +5399,9 @@ void CallApiAccessorStub::Generate(MacroAssembler* masm) {
   bool is_store = this->is_store();
   int argc = this->argc();
   bool call_data_undefined = this->call_data_undefined();
+  bool is_lazy = this->is_lazy();
   CallApiFunctionStubHelper(masm, ParameterCount(argc), is_store,
-                            call_data_undefined);
+                            call_data_undefined, is_lazy);
 }