[turbofan] JSGenericLowering mostly uses builtins instead of code stubs now

src/builtins/x64/builtins-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/code-factory.h"
 #include "src/codegen.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 2565 matching lines @@
       {
         // Convert receiver using ToObject.
         // TODO(bmeurer): Inline the allocation here to avoid building the frame
         // in the fast case? (fall back to AllocateInNewSpace?)
         FrameScope scope(masm, StackFrame::INTERNAL);
         __ Integer32ToSmi(rax, rax);
         __ Push(rax);
         __ Push(rdi);
         __ movp(rax, rcx);
         __ Push(rsi);
-        ToObjectStub stub(masm->isolate());
-        __ CallStub(&stub);
+        __ Call(masm->isolate()->builtins()->ToObject(),
+                RelocInfo::CODE_TARGET);
         __ Pop(rsi);
         __ movp(rcx, rax);
         __ Pop(rdi);
         __ Pop(rax);
         __ SmiToInteger32(rax, rax);
       }
       __ movp(rdx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
       __ bind(&convert_receiver);
     }
     __ movp(args.GetReceiverOperand(), rcx);
@@ skipping 491 matching lines @@
 void Builtins::Generate_InterpreterOnStackReplacement(MacroAssembler* masm) {
   Generate_OnStackReplacementHelper(masm, true);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64