[builtins] move builtin files to src/builtins/.

src/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"
-
-namespace v8 {
-namespace internal {
-
-
-#define __ ACCESS_MASM(masm)
-
-void Builtins::Generate_Adaptor(MacroAssembler* masm, CFunctionId id,
-                                ExitFrameType exit_frame_type) {
-  // ----------- S t a t e -------------
-  //  -- rax                 : number of arguments excluding receiver
-  //  -- rdi                 : target
-  //  -- rdx                 : new.target
-  //  -- rsp[0]              : return address
-  //  -- rsp[8]              : last argument
-  //  -- ...
-  //  -- rsp[8 * argc]       : first argument
-  //  -- rsp[8 * (argc + 1)] : receiver
-  // -----------------------------------
-  __ AssertFunction(rdi);
-
-  // Make sure we operate in the context of the called function (for example
-  // ConstructStubs implemented in C++ will be run in the context of the caller
-  // instead of the callee, due to the way that [[Construct]] is defined for
-  // ordinary functions).
-  __ movp(rsi, FieldOperand(rdi, JSFunction::kContextOffset));
-
-  // JumpToExternalReference expects rax to contain the number of arguments
-  // including the receiver and the extra arguments.
-  const int num_extra_args = 3;
-  __ addp(rax, Immediate(num_extra_args + 1));
-
-  // Unconditionally insert argc, target and new target as extra arguments. They
-  // will be used by stack frame iterators when constructing the stack trace.
-  __ PopReturnAddressTo(kScratchRegister);
-  __ Integer32ToSmi(rax, rax);
-  __ Push(rax);
-  __ SmiToInteger32(rax, rax);
-  __ Push(rdi);
-  __ Push(rdx);
-  __ PushReturnAddressFrom(kScratchRegister);
-
-  __ JumpToExternalReference(ExternalReference(id, masm->isolate()),
-                             exit_frame_type == BUILTIN_EXIT);
-}
-
-
-static void GenerateTailCallToSharedCode(MacroAssembler* masm) {
-  __ movp(kScratchRegister,
-          FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
-  __ movp(kScratchRegister,
-          FieldOperand(kScratchRegister, SharedFunctionInfo::kCodeOffset));
-  __ leap(kScratchRegister, FieldOperand(kScratchRegister, Code::kHeaderSize));
-  __ jmp(kScratchRegister);
-}
-
-static void GenerateTailCallToReturnedCode(MacroAssembler* masm,
-                                           Runtime::FunctionId function_id) {
-  // ----------- S t a t e -------------
-  //  -- rax : argument count (preserved for callee)
-  //  -- rdx : new target (preserved for callee)
-  //  -- rdi : target function (preserved for callee)
-  // -----------------------------------
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-    // Push the number of arguments to the callee.
-    __ Integer32ToSmi(rax, rax);
-    __ Push(rax);
-    // Push a copy of the target function and the new target.
-    __ Push(rdi);
-    __ Push(rdx);
-    // Function is also the parameter to the runtime call.
-    __ Push(rdi);
-
-    __ CallRuntime(function_id, 1);
-    __ movp(rbx, rax);
-
-    // Restore target function and new target.
-    __ Pop(rdx);
-    __ Pop(rdi);
-    __ Pop(rax);
-    __ SmiToInteger32(rax, rax);
-  }
-  __ leap(rbx, FieldOperand(rbx, Code::kHeaderSize));
-  __ jmp(rbx);
-}
-
-void Builtins::Generate_InOptimizationQueue(MacroAssembler* masm) {
-  // Checking whether the queued function is ready for install is optional,
-  // since we come across interrupts and stack checks elsewhere.  However,
-  // not checking may delay installing ready functions, and always checking
-  // would be quite expensive.  A good compromise is to first check against
-  // stack limit as a cue for an interrupt signal.
-  Label ok;
-  __ CompareRoot(rsp, Heap::kStackLimitRootIndex);
-  __ j(above_equal, &ok);
-
-  GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode);
-
-  __ bind(&ok);
-  GenerateTailCallToSharedCode(masm);
-}
-
-
-static void Generate_JSConstructStubHelper(MacroAssembler* masm,
-                                           bool is_api_function,
-                                           bool create_implicit_receiver,
-                                           bool check_derived_construct) {
-  // ----------- S t a t e -------------
-  //  -- rax: number of arguments
-  //  -- rsi: context
-  //  -- rdi: constructor function
-  //  -- rbx: allocation site or undefined
-  //  -- rdx: new target
-  // -----------------------------------
-
-  // Enter a construct frame.
-  {
-    FrameScope scope(masm, StackFrame::CONSTRUCT);
-
-    // Preserve the incoming parameters on the stack.
-    __ AssertUndefinedOrAllocationSite(rbx);
-    __ Push(rsi);
-    __ Push(rbx);
-    __ Integer32ToSmi(rcx, rax);
-    __ Push(rcx);
-
-    if (create_implicit_receiver) {
-      // Allocate the new receiver object.
-      __ Push(rdi);
-      __ Push(rdx);
-      FastNewObjectStub stub(masm->isolate());
-      __ CallStub(&stub);
-      __ movp(rbx, rax);
-      __ Pop(rdx);
-      __ Pop(rdi);
-
-      // ----------- S t a t e -------------
-      //  -- rdi: constructor function
-      //  -- rbx: newly allocated object
-      //  -- rdx: new target
-      // -----------------------------------
-
-      // Retrieve smi-tagged arguments count from the stack.
-      __ SmiToInteger32(rax, Operand(rsp, 0 * kPointerSize));
-    }
-
-    if (create_implicit_receiver) {
-      // Push the allocated receiver to the stack. We need two copies
-      // because we may have to return the original one and the calling
-      // conventions dictate that the called function pops the receiver.
-      __ Push(rbx);
-      __ Push(rbx);
-    } else {
-      __ PushRoot(Heap::kTheHoleValueRootIndex);
-    }
-
-    // Set up pointer to last argument.
-    __ leap(rbx, Operand(rbp, StandardFrameConstants::kCallerSPOffset));
-
-    // Copy arguments and receiver to the expression stack.
-    Label loop, entry;
-    __ movp(rcx, rax);
-    __ jmp(&entry);
-    __ bind(&loop);
-    __ Push(Operand(rbx, rcx, times_pointer_size, 0));
-    __ bind(&entry);
-    __ decp(rcx);
-    __ j(greater_equal, &loop);
-
-    // Call the function.
-    ParameterCount actual(rax);
-    __ InvokeFunction(rdi, rdx, actual, CALL_FUNCTION,
-                      CheckDebugStepCallWrapper());
-
-    // Store offset of return address for deoptimizer.
-    if (create_implicit_receiver && !is_api_function) {
-      masm->isolate()->heap()->SetConstructStubDeoptPCOffset(masm->pc_offset());
-    }
-
-    // Restore context from the frame.
-    __ movp(rsi, Operand(rbp, ConstructFrameConstants::kContextOffset));
-
-    if (create_implicit_receiver) {
-      // If the result is an object (in the ECMA sense), we should get rid
-      // of the receiver and use the result; see ECMA-262 section 13.2.2-7
-      // on page 74.
-      Label use_receiver, exit;
-      // If the result is a smi, it is *not* an object in the ECMA sense.
-      __ JumpIfSmi(rax, &use_receiver);
-
-      // If the type of the result (stored in its map) is less than
-      // FIRST_JS_RECEIVER_TYPE, it is not an object in the ECMA sense.
-      STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE);
-      __ CmpObjectType(rax, FIRST_JS_RECEIVER_TYPE, rcx);
-      __ j(above_equal, &exit);
-
-      // Throw away the result of the constructor invocation and use the
-      // on-stack receiver as the result.
-      __ bind(&use_receiver);
-      __ movp(rax, Operand(rsp, 0));
-
-      // Restore the arguments count and leave the construct frame. The
-      // arguments count is stored below the receiver.
-      __ bind(&exit);
-      __ movp(rbx, Operand(rsp, 1 * kPointerSize));
-    } else {
-      __ movp(rbx, Operand(rsp, 0));
-    }
-
-    // Leave construct frame.
-  }
-
-  // ES6 9.2.2. Step 13+
-  // Check that the result is not a Smi, indicating that the constructor result
-  // from a derived class is neither undefined nor an Object.
-  if (check_derived_construct) {
-    Label dont_throw;
-    __ JumpIfNotSmi(rax, &dont_throw);
-    {
-      FrameScope scope(masm, StackFrame::INTERNAL);
-      __ CallRuntime(Runtime::kThrowDerivedConstructorReturnedNonObject);
-    }
-    __ bind(&dont_throw);
-  }
-
-  // Remove caller arguments from the stack and return.
-  __ PopReturnAddressTo(rcx);
-  SmiIndex index = masm->SmiToIndex(rbx, rbx, kPointerSizeLog2);
-  __ leap(rsp, Operand(rsp, index.reg, index.scale, 1 * kPointerSize));
-  __ PushReturnAddressFrom(rcx);
-  if (create_implicit_receiver) {
-    Counters* counters = masm->isolate()->counters();
-    __ IncrementCounter(counters->constructed_objects(), 1);
-  }
-  __ ret(0);
-}
-
-
-void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) {
-  Generate_JSConstructStubHelper(masm, false, true, false);
-}
-
-
-void Builtins::Generate_JSConstructStubApi(MacroAssembler* masm) {
-  Generate_JSConstructStubHelper(masm, true, false, false);
-}
-
-
-void Builtins::Generate_JSBuiltinsConstructStub(MacroAssembler* masm) {
-  Generate_JSConstructStubHelper(masm, false, false, false);
-}
-
-
-void Builtins::Generate_JSBuiltinsConstructStubForDerived(
-    MacroAssembler* masm) {
-  Generate_JSConstructStubHelper(masm, false, false, true);
-}
-
-
-void Builtins::Generate_ConstructedNonConstructable(MacroAssembler* masm) {
-  FrameScope scope(masm, StackFrame::INTERNAL);
-  __ Push(rdi);
-  __ CallRuntime(Runtime::kThrowConstructedNonConstructable);
-}
-
-
-enum IsTagged { kRaxIsSmiTagged, kRaxIsUntaggedInt };
-
-
-// Clobbers rcx, r11, kScratchRegister; preserves all other registers.
-static void Generate_CheckStackOverflow(MacroAssembler* masm,
-                                        IsTagged rax_is_tagged) {
-  // rax   : the number of items to be pushed to the stack
-  //
-  // Check the stack for overflow. We are not trying to catch
-  // interruptions (e.g. debug break and preemption) here, so the "real stack
-  // limit" is checked.
-  Label okay;
-  __ LoadRoot(kScratchRegister, Heap::kRealStackLimitRootIndex);
-  __ movp(rcx, rsp);
-  // Make rcx the space we have left. The stack might already be overflowed
-  // here which will cause rcx to become negative.
-  __ subp(rcx, kScratchRegister);
-  // Make r11 the space we need for the array when it is unrolled onto the
-  // stack.
-  if (rax_is_tagged == kRaxIsSmiTagged) {
-    __ PositiveSmiTimesPowerOfTwoToInteger64(r11, rax, kPointerSizeLog2);
-  } else {
-    DCHECK(rax_is_tagged == kRaxIsUntaggedInt);
-    __ movp(r11, rax);
-    __ shlq(r11, Immediate(kPointerSizeLog2));
-  }
-  // Check if the arguments will overflow the stack.
-  __ cmpp(rcx, r11);
-  __ j(greater, &okay);  // Signed comparison.
-
-  // Out of stack space.
-  __ CallRuntime(Runtime::kThrowStackOverflow);
-
-  __ bind(&okay);
-}
-
-
-static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm,
-                                             bool is_construct) {
-  ProfileEntryHookStub::MaybeCallEntryHook(masm);
-
-  // Expects five C++ function parameters.
-  // - Object* new_target
-  // - JSFunction* function
-  // - Object* receiver
-  // - int argc
-  // - Object*** argv
-  // (see Handle::Invoke in execution.cc).
-
-  // Open a C++ scope for the FrameScope.
-  {
-    // Platform specific argument handling. After this, the stack contains
-    // an internal frame and the pushed function and receiver, and
-    // register rax and rbx holds the argument count and argument array,
-    // while rdi holds the function pointer, rsi the context, and rdx the
-    // new.target.
-
-#ifdef _WIN64
-    // MSVC parameters in:
-    // rcx        : new_target
-    // rdx        : function
-    // r8         : receiver
-    // r9         : argc
-    // [rsp+0x20] : argv
-
-    // Enter an internal frame.
-    FrameScope scope(masm, StackFrame::INTERNAL);
-
-    // Setup the context (we need to use the caller context from the isolate).
-    ExternalReference context_address(Isolate::kContextAddress,
-                                      masm->isolate());
-    __ movp(rsi, masm->ExternalOperand(context_address));
-
-    // Push the function and the receiver onto the stack.
-    __ Push(rdx);
-    __ Push(r8);
-
-    // Load the number of arguments and setup pointer to the arguments.
-    __ movp(rax, r9);
-    // Load the previous frame pointer to access C argument on stack
-    __ movp(kScratchRegister, Operand(rbp, 0));
-    __ movp(rbx, Operand(kScratchRegister, EntryFrameConstants::kArgvOffset));
-    // Load the function pointer into rdi.
-    __ movp(rdi, rdx);
-    // Load the new.target into rdx.
-    __ movp(rdx, rcx);
-#else  // _WIN64
-    // GCC parameters in:
-    // rdi : new_target
-    // rsi : function
-    // rdx : receiver
-    // rcx : argc
-    // r8  : argv
-
-    __ movp(r11, rdi);
-    __ movp(rdi, rsi);
-    // rdi : function
-    // r11 : new_target
-
-    // Clear the context before we push it when entering the internal frame.
-    __ Set(rsi, 0);
-
-    // Enter an internal frame.
-    FrameScope scope(masm, StackFrame::INTERNAL);
-
-    // Setup the context (we need to use the caller context from the isolate).
-    ExternalReference context_address(Isolate::kContextAddress,
-                                      masm->isolate());
-    __ movp(rsi, masm->ExternalOperand(context_address));
-
-    // Push the function and receiver onto the stack.
-    __ Push(rdi);
-    __ Push(rdx);
-
-    // Load the number of arguments and setup pointer to the arguments.
-    __ movp(rax, rcx);
-    __ movp(rbx, r8);
-
-    // Load the new.target into rdx.
-    __ movp(rdx, r11);
-#endif  // _WIN64
-
-    // Current stack contents:
-    // [rsp + 2 * kPointerSize ... ] : Internal frame
-    // [rsp + kPointerSize]          : function
-    // [rsp]                         : receiver
-    // Current register contents:
-    // rax : argc
-    // rbx : argv
-    // rsi : context
-    // rdi : function
-    // rdx : new.target
-
-    // Check if we have enough stack space to push all arguments.
-    // Expects argument count in rax. Clobbers rcx, r11.
-    Generate_CheckStackOverflow(masm, kRaxIsUntaggedInt);
-
-    // Copy arguments to the stack in a loop.
-    // Register rbx points to array of pointers to handle locations.
-    // Push the values of these handles.
-    Label loop, entry;
-    __ Set(rcx, 0);  // Set loop variable to 0.
-    __ jmp(&entry, Label::kNear);
-    __ bind(&loop);
-    __ movp(kScratchRegister, Operand(rbx, rcx, times_pointer_size, 0));
-    __ Push(Operand(kScratchRegister, 0));  // dereference handle
-    __ addp(rcx, Immediate(1));
-    __ bind(&entry);
-    __ cmpp(rcx, rax);
-    __ j(not_equal, &loop);
-
-    // Invoke the builtin code.
-    Handle<Code> builtin = is_construct
-                               ? masm->isolate()->builtins()->Construct()
-                               : masm->isolate()->builtins()->Call();
-    __ Call(builtin, RelocInfo::CODE_TARGET);
-
-    // Exit the internal frame. Notice that this also removes the empty
-    // context and the function left on the stack by the code
-    // invocation.
-  }
-
-  // TODO(X64): Is argument correct? Is there a receiver to remove?
-  __ ret(1 * kPointerSize);  // Remove receiver.
-}
-
-
-void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) {
-  Generate_JSEntryTrampolineHelper(masm, false);
-}
-
-
-void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) {
-  Generate_JSEntryTrampolineHelper(masm, true);
-}
-
-// static
-void Builtins::Generate_ResumeGeneratorTrampoline(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax    : the value to pass to the generator
-  //  -- rbx    : the JSGeneratorObject to resume
-  //  -- rdx    : the resume mode (tagged)
-  //  -- rsp[0] : return address
-  // -----------------------------------
-  __ AssertGeneratorObject(rbx);
-
-  // Store input value into generator object.
-  __ movp(FieldOperand(rbx, JSGeneratorObject::kInputOrDebugPosOffset), rax);
-  __ RecordWriteField(rbx, JSGeneratorObject::kInputOrDebugPosOffset, rax, rcx,
-                      kDontSaveFPRegs);
-
-  // Store resume mode into generator object.
-  __ movp(FieldOperand(rbx, JSGeneratorObject::kResumeModeOffset), rdx);
-
-  // Load suspended function and context.
-  __ movp(rsi, FieldOperand(rbx, JSGeneratorObject::kContextOffset));
-  __ movp(rdi, FieldOperand(rbx, JSGeneratorObject::kFunctionOffset));
-
-  // Flood function if we are stepping.
-  Label prepare_step_in_if_stepping, prepare_step_in_suspended_generator;
-  Label stepping_prepared;
-  ExternalReference last_step_action =
-      ExternalReference::debug_last_step_action_address(masm->isolate());
-  Operand last_step_action_operand = masm->ExternalOperand(last_step_action);
-  STATIC_ASSERT(StepFrame > StepIn);
-  __ cmpb(last_step_action_operand, Immediate(StepIn));
-  __ j(greater_equal, &prepare_step_in_if_stepping);
-
-  // Flood function if we need to continue stepping in the suspended generator.
-  ExternalReference debug_suspended_generator =
-      ExternalReference::debug_suspended_generator_address(masm->isolate());
-  Operand debug_suspended_generator_operand =
-      masm->ExternalOperand(debug_suspended_generator);
-  __ cmpp(rbx, debug_suspended_generator_operand);
-  __ j(equal, &prepare_step_in_suspended_generator);
-  __ bind(&stepping_prepared);
-
-  // Pop return address.
-  __ PopReturnAddressTo(rax);
-
-  // Push receiver.
-  __ Push(FieldOperand(rbx, JSGeneratorObject::kReceiverOffset));
-
-  // ----------- S t a t e -------------
-  //  -- rax    : return address
-  //  -- rbx    : the JSGeneratorObject to resume
-  //  -- rdx    : the resume mode (tagged)
-  //  -- rdi    : generator function
-  //  -- rsi    : generator context
-  //  -- rsp[0] : generator receiver
-  // -----------------------------------
-
-  // Push holes for arguments to generator function. Since the parser forced
-  // context allocation for any variables in generators, the actual argument
-  // values have already been copied into the context and these dummy values
-  // will never be used.
-  __ movp(rcx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
-  __ LoadSharedFunctionInfoSpecialField(
-      rcx, rcx, SharedFunctionInfo::kFormalParameterCountOffset);
-  {
-    Label done_loop, loop;
-    __ bind(&loop);
-    __ subl(rcx, Immediate(1));
-    __ j(carry, &done_loop, Label::kNear);
-    __ PushRoot(Heap::kTheHoleValueRootIndex);
-    __ jmp(&loop);
-    __ bind(&done_loop);
-  }
-
-  // Dispatch on the kind of generator object.
-  Label old_generator;
-  __ movp(rcx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
-  __ movp(rcx, FieldOperand(rcx, SharedFunctionInfo::kFunctionDataOffset));
-  __ CmpObjectType(rcx, BYTECODE_ARRAY_TYPE, rcx);
-  __ j(not_equal, &old_generator);
-
-  // New-style (ignition/turbofan) generator object.
-  {
-    __ PushReturnAddressFrom(rax);
-    __ movp(rax, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
-    __ LoadSharedFunctionInfoSpecialField(
-        rax, rax, SharedFunctionInfo::kFormalParameterCountOffset);
-    // We abuse new.target both to indicate that this is a resume call and to
-    // pass in the generator object.  In ordinary calls, new.target is always
-    // undefined because generator functions are non-constructable.
-    __ movp(rdx, rbx);
-    __ jmp(FieldOperand(rdi, JSFunction::kCodeEntryOffset));
-  }
-
-  // Old-style (full-codegen) generator object.
-  __ bind(&old_generator);
-  {
-    // Enter a new JavaScript frame, and initialize its slots as they were when
-    // the generator was suspended.
-    FrameScope scope(masm, StackFrame::MANUAL);
-    __ PushReturnAddressFrom(rax);  // Return address.
-    __ Push(rbp);                   // Caller's frame pointer.
-    __ Move(rbp, rsp);
-    __ Push(rsi);  // Callee's context.
-    __ Push(rdi);  // Callee's JS Function.
-
-    // Restore the operand stack.
-    __ movp(rsi, FieldOperand(rbx, JSGeneratorObject::kOperandStackOffset));
-    __ SmiToInteger32(rax, FieldOperand(rsi, FixedArray::kLengthOffset));
-    {
-      Label done_loop, loop;
-      __ Set(rcx, 0);
-      __ bind(&loop);
-      __ cmpl(rcx, rax);
-      __ j(equal, &done_loop, Label::kNear);
-      __ Push(
-          FieldOperand(rsi, rcx, times_pointer_size, FixedArray::kHeaderSize));
-      __ addl(rcx, Immediate(1));
-      __ jmp(&loop);
-      __ bind(&done_loop);
-    }
-
-    // Reset operand stack so we don't leak.
-    __ LoadRoot(FieldOperand(rbx, JSGeneratorObject::kOperandStackOffset),
-                Heap::kEmptyFixedArrayRootIndex);
-
-    // Restore context.
-    __ movp(rsi, FieldOperand(rbx, JSGeneratorObject::kContextOffset));
-
-    // Resume the generator function at the continuation.
-    __ movp(rdx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
-    __ movp(rdx, FieldOperand(rdx, SharedFunctionInfo::kCodeOffset));
-    __ SmiToInteger64(
-        rcx, FieldOperand(rbx, JSGeneratorObject::kContinuationOffset));
-    __ leap(rdx, FieldOperand(rdx, rcx, times_1, Code::kHeaderSize));
-    __ Move(FieldOperand(rbx, JSGeneratorObject::kContinuationOffset),
-            Smi::FromInt(JSGeneratorObject::kGeneratorExecuting));
-    __ movp(rax, rbx);  // Continuation expects generator object in rax.
-    __ jmp(rdx);
-  }
-
-  __ bind(&prepare_step_in_if_stepping);
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-    __ Push(rbx);
-    __ Push(rdx);
-    __ Push(rdi);
-    __ CallRuntime(Runtime::kDebugPrepareStepInIfStepping);
-    __ Pop(rdx);
-    __ Pop(rbx);
-    __ movp(rdi, FieldOperand(rbx, JSGeneratorObject::kFunctionOffset));
-  }
-  __ jmp(&stepping_prepared);
-
-  __ bind(&prepare_step_in_suspended_generator);
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-    __ Push(rbx);
-    __ Push(rdx);
-    __ CallRuntime(Runtime::kDebugPrepareStepInSuspendedGenerator);
-    __ Pop(rdx);
-    __ Pop(rbx);
-    __ movp(rdi, FieldOperand(rbx, JSGeneratorObject::kFunctionOffset));
-  }
-  __ jmp(&stepping_prepared);
-}
-
-static void LeaveInterpreterFrame(MacroAssembler* masm, Register scratch1,
-                                  Register scratch2) {
-  Register args_count = scratch1;
-  Register return_pc = scratch2;
-
-  // Get the arguments + receiver count.
-  __ movp(args_count,
-          Operand(rbp, InterpreterFrameConstants::kBytecodeArrayFromFp));
-  __ movl(args_count,
-          FieldOperand(args_count, BytecodeArray::kParameterSizeOffset));
-
-  // Leave the frame (also dropping the register file).
-  __ leave();
-
-  // Drop receiver + arguments.
-  __ PopReturnAddressTo(return_pc);
-  __ addp(rsp, args_count);
-  __ PushReturnAddressFrom(return_pc);
-}
-
-// Generate code for entering a JS function with the interpreter.
-// On entry to the function the receiver and arguments have been pushed on the
-// stack left to right.  The actual argument count matches the formal parameter
-// count expected by the function.
-//
-// The live registers are:
-//   o rdi: the JS function object being called
-//   o rdx: the new target
-//   o rsi: our context
-//   o rbp: the caller's frame pointer
-//   o rsp: stack pointer (pointing to return address)
-//
-// The function builds an interpreter frame.  See InterpreterFrameConstants in
-// frames.h for its layout.
-void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) {
-  ProfileEntryHookStub::MaybeCallEntryHook(masm);
-
-  // Open a frame scope to indicate that there is a frame on the stack.  The
-  // MANUAL indicates that the scope shouldn't actually generate code to set up
-  // the frame (that is done below).
-  FrameScope frame_scope(masm, StackFrame::MANUAL);
-  __ pushq(rbp);  // Caller's frame pointer.
-  __ movp(rbp, rsp);
-  __ Push(rsi);  // Callee's context.
-  __ Push(rdi);  // Callee's JS function.
-  __ Push(rdx);  // Callee's new target.
-
-  // Get the bytecode array from the function object (or from the DebugInfo if
-  // it is present) and load it into kInterpreterBytecodeArrayRegister.
-  __ movp(rax, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
-  Label load_debug_bytecode_array, bytecode_array_loaded;
-  DCHECK_EQ(Smi::FromInt(0), DebugInfo::uninitialized());
-  __ cmpp(FieldOperand(rax, SharedFunctionInfo::kDebugInfoOffset),
-          Immediate(0));
-  __ j(not_equal, &load_debug_bytecode_array);
-  __ movp(kInterpreterBytecodeArrayRegister,
-          FieldOperand(rax, SharedFunctionInfo::kFunctionDataOffset));
-  __ bind(&bytecode_array_loaded);
-
-  // Check function data field is actually a BytecodeArray object.
-  Label bytecode_array_not_present;
-  __ CompareRoot(kInterpreterBytecodeArrayRegister,
-                 Heap::kUndefinedValueRootIndex);
-  __ j(equal, &bytecode_array_not_present);
-  if (FLAG_debug_code) {
-    __ AssertNotSmi(kInterpreterBytecodeArrayRegister);
-    __ CmpObjectType(kInterpreterBytecodeArrayRegister, BYTECODE_ARRAY_TYPE,
-                     rax);
-    __ Assert(equal, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
-  }
-
-  // Load initial bytecode offset.
-  __ movp(kInterpreterBytecodeOffsetRegister,
-          Immediate(BytecodeArray::kHeaderSize - kHeapObjectTag));
-
-  // Push bytecode array and Smi tagged bytecode offset.
-  __ Push(kInterpreterBytecodeArrayRegister);
-  __ Integer32ToSmi(rcx, kInterpreterBytecodeOffsetRegister);
-  __ Push(rcx);
-
-  // Allocate the local and temporary register file on the stack.
-  {
-    // Load frame size from the BytecodeArray object.
-    __ movl(rcx, FieldOperand(kInterpreterBytecodeArrayRegister,
-                              BytecodeArray::kFrameSizeOffset));
-
-    // Do a stack check to ensure we don't go over the limit.
-    Label ok;
-    __ movp(rdx, rsp);
-    __ subp(rdx, rcx);
-    __ CompareRoot(rdx, Heap::kRealStackLimitRootIndex);
-    __ j(above_equal, &ok, Label::kNear);
-    __ CallRuntime(Runtime::kThrowStackOverflow);
-    __ bind(&ok);
-
-    // If ok, push undefined as the initial value for all register file entries.
-    Label loop_header;
-    Label loop_check;
-    __ LoadRoot(rdx, Heap::kUndefinedValueRootIndex);
-    __ j(always, &loop_check);
-    __ bind(&loop_header);
-    // TODO(rmcilroy): Consider doing more than one push per loop iteration.
-    __ Push(rdx);
-    // Continue loop if not done.
-    __ bind(&loop_check);
-    __ subp(rcx, Immediate(kPointerSize));
-    __ j(greater_equal, &loop_header, Label::kNear);
-  }
-
-  // Load accumulator and dispatch table into registers.
-  __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex);
-  __ Move(
-      kInterpreterDispatchTableRegister,
-      ExternalReference::interpreter_dispatch_table_address(masm->isolate()));
-
-  // Dispatch to the first bytecode handler for the function.
-  __ movzxbp(rbx, Operand(kInterpreterBytecodeArrayRegister,
-                          kInterpreterBytecodeOffsetRegister, times_1, 0));
-  __ movp(rbx, Operand(kInterpreterDispatchTableRegister, rbx,
-                       times_pointer_size, 0));
-  __ call(rbx);
-  masm->isolate()->heap()->SetInterpreterEntryReturnPCOffset(masm->pc_offset());
-
-  // The return value is in rax.
-  LeaveInterpreterFrame(masm, rbx, rcx);
-  __ ret(0);
-
-  // Load debug copy of the bytecode array.
-  __ bind(&load_debug_bytecode_array);
-  Register debug_info = kInterpreterBytecodeArrayRegister;
-  __ movp(debug_info, FieldOperand(rax, SharedFunctionInfo::kDebugInfoOffset));
-  __ movp(kInterpreterBytecodeArrayRegister,
-          FieldOperand(debug_info, DebugInfo::kAbstractCodeIndex));
-  __ jmp(&bytecode_array_loaded);
-
-  // If the bytecode array is no longer present, then the underlying function
-  // has been switched to a different kind of code and we heal the closure by
-  // switching the code entry field over to the new code object as well.
-  __ bind(&bytecode_array_not_present);
-  __ leave();  // Leave the frame so we can tail call.
-  __ movp(rcx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
-  __ movp(rcx, FieldOperand(rcx, SharedFunctionInfo::kCodeOffset));
-  __ leap(rcx, FieldOperand(rcx, Code::kHeaderSize));
-  __ movp(FieldOperand(rdi, JSFunction::kCodeEntryOffset), rcx);
-  __ RecordWriteCodeEntryField(rdi, rcx, r15);
-  __ jmp(rcx);
-}
-
-void Builtins::Generate_InterpreterMarkBaselineOnReturn(MacroAssembler* masm) {
-  // Save the function and context for call to CompileBaseline.
-  __ movp(rdi, Operand(rbp, StandardFrameConstants::kFunctionOffset));
-  __ movp(kContextRegister,
-          Operand(rbp, StandardFrameConstants::kContextOffset));
-
-  // Leave the frame before recompiling for baseline so that we don't count as
-  // an activation on the stack.
-  LeaveInterpreterFrame(masm, rbx, rcx);
-
-  {
-    FrameScope frame_scope(masm, StackFrame::INTERNAL);
-    // Push return value.
-    __ Push(rax);
-
-    // Push function as argument and compile for baseline.
-    __ Push(rdi);
-    __ CallRuntime(Runtime::kCompileBaseline);
-
-    // Restore return value.
-    __ Pop(rax);
-  }
-  __ ret(0);
-}
-
-static void Generate_InterpreterPushArgs(MacroAssembler* masm,
-                                         bool push_receiver) {
-  // ----------- S t a t e -------------
-  //  -- rax : the number of arguments (not including the receiver)
-  //  -- rbx : the address of the first argument to be pushed. Subsequent
-  //           arguments should be consecutive above this, in the same order as
-  //           they are to be pushed onto the stack.
-  // -----------------------------------
-
-  // Find the address of the last argument.
-  __ movp(rcx, rax);
-  if (push_receiver) {
-    __ addp(rcx, Immediate(1));  // Add one for receiver.
-  }
-
-  __ shlp(rcx, Immediate(kPointerSizeLog2));
-  __ negp(rcx);
-  __ addp(rcx, rbx);
-
-  // Push the arguments.
-  Label loop_header, loop_check;
-  __ j(always, &loop_check);
-  __ bind(&loop_header);
-  __ Push(Operand(rbx, 0));
-  __ subp(rbx, Immediate(kPointerSize));
-  __ bind(&loop_check);
-  __ cmpp(rbx, rcx);
-  __ j(greater, &loop_header, Label::kNear);
-}
-
-// static
-void Builtins::Generate_InterpreterPushArgsAndCallImpl(
-    MacroAssembler* masm, TailCallMode tail_call_mode,
-    CallableType function_type) {
-  // ----------- S t a t e -------------
-  //  -- rax : the number of arguments (not including the receiver)
-  //  -- rbx : the address of the first argument to be pushed. Subsequent
-  //           arguments should be consecutive above this, in the same order as
-  //           they are to be pushed onto the stack.
-  //  -- rdi : the target to call (can be any Object).
-  // -----------------------------------
-
-  // Pop return address to allow tail-call after pushing arguments.
-  __ PopReturnAddressTo(kScratchRegister);
-
-  Generate_InterpreterPushArgs(masm, true);
-
-  // Call the target.
-  __ PushReturnAddressFrom(kScratchRegister);  // Re-push return address.
-
-  if (function_type == CallableType::kJSFunction) {
-    __ Jump(masm->isolate()->builtins()->CallFunction(ConvertReceiverMode::kAny,
-                                                      tail_call_mode),
-            RelocInfo::CODE_TARGET);
-  } else {
-    DCHECK_EQ(function_type, CallableType::kAny);
-    __ Jump(masm->isolate()->builtins()->Call(ConvertReceiverMode::kAny,
-                                              tail_call_mode),
-            RelocInfo::CODE_TARGET);
-  }
-}
-
-// static
-void Builtins::Generate_InterpreterPushArgsAndConstruct(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax : the number of arguments (not including the receiver)
-  //  -- rdx : the new target (either the same as the constructor or
-  //           the JSFunction on which new was invoked initially)
-  //  -- rdi : the constructor to call (can be any Object)
-  //  -- rbx : the address of the first argument to be pushed. Subsequent
-  //           arguments should be consecutive above this, in the same order as
-  //           they are to be pushed onto the stack.
-  // -----------------------------------
-
-  // Pop return address to allow tail-call after pushing arguments.
-  __ PopReturnAddressTo(kScratchRegister);
-
-  // Push slot for the receiver to be constructed.
-  __ Push(Immediate(0));
-
-  Generate_InterpreterPushArgs(masm, false);
-
-  // Push return address in preparation for the tail-call.
-  __ PushReturnAddressFrom(kScratchRegister);
-
-  // Call the constructor (rax, rdx, rdi passed on).
-  __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET);
-}
-
-void Builtins::Generate_InterpreterEnterBytecodeDispatch(MacroAssembler* masm) {
-  // Set the return address to the correct point in the interpreter entry
-  // trampoline.
-  Smi* interpreter_entry_return_pc_offset(
-      masm->isolate()->heap()->interpreter_entry_return_pc_offset());
-  DCHECK_NE(interpreter_entry_return_pc_offset, Smi::FromInt(0));
-  __ Move(rbx, masm->isolate()->builtins()->InterpreterEntryTrampoline());
-  __ addp(rbx, Immediate(interpreter_entry_return_pc_offset->value() +
-                         Code::kHeaderSize - kHeapObjectTag));
-  __ Push(rbx);
-
-  // Initialize dispatch table register.
-  __ Move(
-      kInterpreterDispatchTableRegister,
-      ExternalReference::interpreter_dispatch_table_address(masm->isolate()));
-
-  // Get the bytecode array pointer from the frame.
-  __ movp(kInterpreterBytecodeArrayRegister,
-          Operand(rbp, InterpreterFrameConstants::kBytecodeArrayFromFp));
-
-  if (FLAG_debug_code) {
-    // Check function data field is actually a BytecodeArray object.
-    __ AssertNotSmi(kInterpreterBytecodeArrayRegister);
-    __ CmpObjectType(kInterpreterBytecodeArrayRegister, BYTECODE_ARRAY_TYPE,
-                     rbx);
-    __ Assert(equal, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
-  }
-
-  // Get the target bytecode offset from the frame.
-  __ movp(kInterpreterBytecodeOffsetRegister,
-          Operand(rbp, InterpreterFrameConstants::kBytecodeOffsetFromFp));
-  __ SmiToInteger32(kInterpreterBytecodeOffsetRegister,
-                    kInterpreterBytecodeOffsetRegister);
-
-  // Dispatch to the target bytecode.
-  __ movzxbp(rbx, Operand(kInterpreterBytecodeArrayRegister,
-                          kInterpreterBytecodeOffsetRegister, times_1, 0));
-  __ movp(rbx, Operand(kInterpreterDispatchTableRegister, rbx,
-                       times_pointer_size, 0));
-  __ jmp(rbx);
-}
-
-void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax : argument count (preserved for callee)
-  //  -- rdx : new target (preserved for callee)
-  //  -- rdi : target function (preserved for callee)
-  // -----------------------------------
-  // First lookup code, maybe we don't need to compile!
-  Label gotta_call_runtime;
-  Label maybe_call_runtime;
-  Label try_shared;
-  Label loop_top, loop_bottom;
-
-  Register closure = rdi;
-  Register map = r8;
-  Register index = r9;
-  __ movp(map, FieldOperand(closure, JSFunction::kSharedFunctionInfoOffset));
-  __ movp(map, FieldOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset));
-  __ SmiToInteger32(index, FieldOperand(map, FixedArray::kLengthOffset));
-  __ cmpl(index, Immediate(2));
-  __ j(less, &gotta_call_runtime);
-
-  // Find literals.
-  // r14 : native context
-  // r9  : length / index
-  // r8  : optimized code map
-  // rdx : new target
-  // rdi : closure
-  Register native_context = r14;
-  __ movp(native_context, NativeContextOperand());
-
-  __ bind(&loop_top);
-  // Native context match?
-  Register temp = r11;
-  __ movp(temp, FieldOperand(map, index, times_pointer_size,
-                             SharedFunctionInfo::kOffsetToPreviousContext));
-  __ movp(temp, FieldOperand(temp, WeakCell::kValueOffset));
-  __ cmpp(temp, native_context);
-  __ j(not_equal, &loop_bottom);
-  // OSR id set to none?
-  __ movp(temp, FieldOperand(map, index, times_pointer_size,
-                             SharedFunctionInfo::kOffsetToPreviousOsrAstId));
-  __ SmiToInteger32(temp, temp);
-  const int bailout_id = BailoutId::None().ToInt();
-  __ cmpl(temp, Immediate(bailout_id));
-  __ j(not_equal, &loop_bottom);
-
-  // Literals available?
-  Label got_literals, maybe_cleared_weakcell;
-  __ movp(temp, FieldOperand(map, index, times_pointer_size,
-                             SharedFunctionInfo::kOffsetToPreviousLiterals));
-  // temp contains either a WeakCell pointing to the literals array or the
-  // literals array directly.
-  STATIC_ASSERT(WeakCell::kValueOffset == FixedArray::kLengthOffset);
-  __ movp(r15, FieldOperand(temp, WeakCell::kValueOffset));
-  __ JumpIfSmi(r15, &maybe_cleared_weakcell);
-  // r15 is a pointer, therefore temp is a WeakCell pointing to a literals
-  // array.
-  __ movp(temp, FieldOperand(temp, WeakCell::kValueOffset));
-  __ jmp(&got_literals);
-
-  // r15 is a smi. If it's 0, then we are looking at a cleared WeakCell
-  // around the literals array, and we should visit the runtime. If it's > 0,
-  // then temp already contains the literals array.
-  __ bind(&maybe_cleared_weakcell);
-  __ cmpp(r15, Immediate(0));
-  __ j(equal, &gotta_call_runtime);
-
-  // Save the literals in the closure.
-  __ bind(&got_literals);
-  __ movp(FieldOperand(closure, JSFunction::kLiteralsOffset), temp);
-  __ movp(r15, index);
-  __ RecordWriteField(closure, JSFunction::kLiteralsOffset, temp, r15,
-                      kDontSaveFPRegs, EMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
-
-  // Code available?
-  Register entry = rcx;
-  __ movp(entry, FieldOperand(map, index, times_pointer_size,
-                              SharedFunctionInfo::kOffsetToPreviousCachedCode));
-  __ movp(entry, FieldOperand(entry, WeakCell::kValueOffset));
-  __ JumpIfSmi(entry, &maybe_call_runtime);
-
-  // Found literals and code. Get them into the closure and return.
-  __ leap(entry, FieldOperand(entry, Code::kHeaderSize));
-
-  Label install_optimized_code_and_tailcall;
-  __ bind(&install_optimized_code_and_tailcall);
-  __ movp(FieldOperand(closure, JSFunction::kCodeEntryOffset), entry);
-  __ RecordWriteCodeEntryField(closure, entry, r15);
-
-  // Link the closure into the optimized function list.
-  // rcx : code entry (entry)
-  // r14 : native context
-  // rdx : new target
-  // rdi : closure
-  __ movp(rbx,
-          ContextOperand(native_context, Context::OPTIMIZED_FUNCTIONS_LIST));
-  __ movp(FieldOperand(closure, JSFunction::kNextFunctionLinkOffset), rbx);
-  __ RecordWriteField(closure, JSFunction::kNextFunctionLinkOffset, rbx, r15,
-                      kDontSaveFPRegs, EMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
-  const int function_list_offset =
-      Context::SlotOffset(Context::OPTIMIZED_FUNCTIONS_LIST);
-  __ movp(ContextOperand(native_context, Context::OPTIMIZED_FUNCTIONS_LIST),
-          closure);
-  // Save closure before the write barrier.
-  __ movp(rbx, closure);
-  __ RecordWriteContextSlot(native_context, function_list_offset, closure, r15,
-                            kDontSaveFPRegs);
-  __ movp(closure, rbx);
-  __ jmp(entry);
-
-  __ bind(&loop_bottom);
-  __ subl(index, Immediate(SharedFunctionInfo::kEntryLength));
-  __ cmpl(index, Immediate(1));
-  __ j(greater, &loop_top);
-
-  // We found neither literals nor code.
-  __ jmp(&gotta_call_runtime);
-
-  __ bind(&maybe_call_runtime);
-
-  // Last possibility. Check the context free optimized code map entry.
-  __ movp(entry, FieldOperand(map, FixedArray::kHeaderSize +
-                                       SharedFunctionInfo::kSharedCodeIndex));
-  __ movp(entry, FieldOperand(entry, WeakCell::kValueOffset));
-  __ JumpIfSmi(entry, &try_shared);
-
-  // Store code entry in the closure.
-  __ leap(entry, FieldOperand(entry, Code::kHeaderSize));
-  __ jmp(&install_optimized_code_and_tailcall);
-
-  __ bind(&try_shared);
-  // Is the full code valid?
-  __ movp(entry, FieldOperand(closure, JSFunction::kSharedFunctionInfoOffset));
-  __ movp(entry, FieldOperand(entry, SharedFunctionInfo::kCodeOffset));
-  __ movl(rbx, FieldOperand(entry, Code::kFlagsOffset));
-  __ andl(rbx, Immediate(Code::KindField::kMask));
-  __ shrl(rbx, Immediate(Code::KindField::kShift));
-  __ cmpl(rbx, Immediate(Code::BUILTIN));
-  __ j(equal, &gotta_call_runtime);
-  // Yes, install the full code.
-  __ leap(entry, FieldOperand(entry, Code::kHeaderSize));
-  __ movp(FieldOperand(closure, JSFunction::kCodeEntryOffset), entry);
-  __ RecordWriteCodeEntryField(closure, entry, r15);
-  __ jmp(entry);
-
-  __ bind(&gotta_call_runtime);
-  GenerateTailCallToReturnedCode(masm, Runtime::kCompileLazy);
-}
-
-void Builtins::Generate_CompileBaseline(MacroAssembler* masm) {
-  GenerateTailCallToReturnedCode(masm, Runtime::kCompileBaseline);
-}
-
-void Builtins::Generate_CompileOptimized(MacroAssembler* masm) {
-  GenerateTailCallToReturnedCode(masm,
-                                 Runtime::kCompileOptimized_NotConcurrent);
-}
-
-
-void Builtins::Generate_CompileOptimizedConcurrent(MacroAssembler* masm) {
-  GenerateTailCallToReturnedCode(masm, Runtime::kCompileOptimized_Concurrent);
-}
-
-void Builtins::Generate_InstantiateAsmJs(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax : argument count (preserved for callee)
-  //  -- rdx : new target (preserved for callee)
-  //  -- rdi : target function (preserved for callee)
-  // -----------------------------------
-  Label failed;
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-    // Push the number of arguments to the callee.
-    __ Integer32ToSmi(rax, rax);
-    __ Push(rax);
-    // Push a copy of the target function and the new target.
-    __ Push(rdi);
-    __ Push(rdx);
-
-    // The function.
-    __ Push(rdi);
-    // Copy arguments from caller (stdlib, foreign, heap).
-    for (int i = 2; i >= 0; --i) {
-      __ Push(Operand(
-          rbp, StandardFrameConstants::kCallerSPOffset + i * kPointerSize));
-    }
-    // Call runtime, on success unwind frame, and parent frame.
-    __ CallRuntime(Runtime::kInstantiateAsmJs, 4);
-    // A smi 0 is returned on failure, an object on success.
-    __ JumpIfSmi(rax, &failed, Label::kNear);
-    scope.GenerateLeaveFrame();
-    __ ret(4 * kPointerSize);
-
-    __ bind(&failed);
-    // Restore target function and new target.
-    __ Pop(rdx);
-    __ Pop(rdi);
-    __ Pop(rax);
-    __ SmiToInteger32(rax, rax);
-  }
-  // On failure, tail call back to regular js.
-  GenerateTailCallToReturnedCode(masm, Runtime::kCompileLazy);
-}
-
-static void GenerateMakeCodeYoungAgainCommon(MacroAssembler* masm) {
-  // For now, we are relying on the fact that make_code_young doesn't do any
-  // garbage collection which allows us to save/restore the registers without
-  // worrying about which of them contain pointers. We also don't build an
-  // internal frame to make the code faster, since we shouldn't have to do stack
-  // crawls in MakeCodeYoung. This seems a bit fragile.
-
-  // Re-execute the code that was patched back to the young age when
-  // the stub returns.
-  __ subp(Operand(rsp, 0), Immediate(5));
-  __ Pushad();
-  __ Move(arg_reg_2, ExternalReference::isolate_address(masm->isolate()));
-  __ movp(arg_reg_1, Operand(rsp, kNumSafepointRegisters * kPointerSize));
-  {  // NOLINT
-    FrameScope scope(masm, StackFrame::MANUAL);
-    __ PrepareCallCFunction(2);
-    __ CallCFunction(
-        ExternalReference::get_make_code_young_function(masm->isolate()), 2);
-  }
-  __ Popad();
-  __ ret(0);
-}
-
-
-#define DEFINE_CODE_AGE_BUILTIN_GENERATOR(C)                 \
-void Builtins::Generate_Make##C##CodeYoungAgainEvenMarking(  \
-    MacroAssembler* masm) {                                  \
-  GenerateMakeCodeYoungAgainCommon(masm);                    \
-}                                                            \
-void Builtins::Generate_Make##C##CodeYoungAgainOddMarking(   \
-    MacroAssembler* masm) {                                  \
-  GenerateMakeCodeYoungAgainCommon(masm);                    \
-}
-CODE_AGE_LIST(DEFINE_CODE_AGE_BUILTIN_GENERATOR)
-#undef DEFINE_CODE_AGE_BUILTIN_GENERATOR
-
-
-void Builtins::Generate_MarkCodeAsExecutedOnce(MacroAssembler* masm) {
-  // For now, as in GenerateMakeCodeYoungAgainCommon, we are relying on the fact
-  // that make_code_young doesn't do any garbage collection which allows us to
-  // save/restore the registers without worrying about which of them contain
-  // pointers.
-  __ Pushad();
-  __ Move(arg_reg_2, ExternalReference::isolate_address(masm->isolate()));
-  __ movp(arg_reg_1, Operand(rsp, kNumSafepointRegisters * kPointerSize));
-  __ subp(arg_reg_1, Immediate(Assembler::kShortCallInstructionLength));
-  {  // NOLINT
-    FrameScope scope(masm, StackFrame::MANUAL);
-    __ PrepareCallCFunction(2);
-    __ CallCFunction(
-        ExternalReference::get_mark_code_as_executed_function(masm->isolate()),
-        2);
-  }
-  __ Popad();
-
-  // Perform prologue operations usually performed by the young code stub.
-  __ PopReturnAddressTo(kScratchRegister);
-  __ pushq(rbp);  // Caller's frame pointer.
-  __ movp(rbp, rsp);
-  __ Push(rsi);  // Callee's context.
-  __ Push(rdi);  // Callee's JS Function.
-  __ PushReturnAddressFrom(kScratchRegister);
-
-  // Jump to point after the code-age stub.
-  __ ret(0);
-}
-
-
-void Builtins::Generate_MarkCodeAsExecutedTwice(MacroAssembler* masm) {
-  GenerateMakeCodeYoungAgainCommon(masm);
-}
-
-
-void Builtins::Generate_MarkCodeAsToBeExecutedOnce(MacroAssembler* masm) {
-  Generate_MarkCodeAsExecutedOnce(masm);
-}
-
-
-static void Generate_NotifyStubFailureHelper(MacroAssembler* masm,
-                                             SaveFPRegsMode save_doubles) {
-  // Enter an internal frame.
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-
-    // Preserve registers across notification, this is important for compiled
-    // stubs that tail call the runtime on deopts passing their parameters in
-    // registers.
-    __ Pushad();
-    __ CallRuntime(Runtime::kNotifyStubFailure, save_doubles);
-    __ Popad();
-    // Tear down internal frame.
-  }
-
-  __ DropUnderReturnAddress(1);  // Ignore state offset
-  __ ret(0);  // Return to IC Miss stub, continuation still on stack.
-}
-
-
-void Builtins::Generate_NotifyStubFailure(MacroAssembler* masm) {
-  Generate_NotifyStubFailureHelper(masm, kDontSaveFPRegs);
-}
-
-
-void Builtins::Generate_NotifyStubFailureSaveDoubles(MacroAssembler* masm) {
-  Generate_NotifyStubFailureHelper(masm, kSaveFPRegs);
-}
-
-
-static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm,
-                                             Deoptimizer::BailoutType type) {
-  // Enter an internal frame.
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-
-    // Pass the deoptimization type to the runtime system.
-    __ Push(Smi::FromInt(static_cast<int>(type)));
-
-    __ CallRuntime(Runtime::kNotifyDeoptimized);
-    // Tear down internal frame.
-  }
-
-  // Get the full codegen state from the stack and untag it.
-  __ SmiToInteger32(kScratchRegister, Operand(rsp, kPCOnStackSize));
-
-  // Switch on the state.
-  Label not_no_registers, not_tos_rax;
-  __ cmpp(kScratchRegister,
-          Immediate(static_cast<int>(Deoptimizer::BailoutState::NO_REGISTERS)));
-  __ j(not_equal, &not_no_registers, Label::kNear);
-  __ ret(1 * kPointerSize);  // Remove state.
-
-  __ bind(&not_no_registers);
-  DCHECK_EQ(kInterpreterAccumulatorRegister.code(), rax.code());
-  __ movp(rax, Operand(rsp, kPCOnStackSize + kPointerSize));
-  __ cmpp(kScratchRegister,
-          Immediate(static_cast<int>(Deoptimizer::BailoutState::TOS_REGISTER)));
-  __ j(not_equal, &not_tos_rax, Label::kNear);
-  __ ret(2 * kPointerSize);  // Remove state, rax.
-
-  __ bind(&not_tos_rax);
-  __ Abort(kNoCasesLeft);
-}
-
-
-void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) {
-  Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::EAGER);
-}
-
-
-void Builtins::Generate_NotifySoftDeoptimized(MacroAssembler* masm) {
-  Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::SOFT);
-}
-
-
-void Builtins::Generate_NotifyLazyDeoptimized(MacroAssembler* masm) {
-  Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::LAZY);
-}
-
-
-// static
-void Builtins::Generate_DatePrototype_GetField(MacroAssembler* masm,
-                                               int field_index) {
-  // ----------- S t a t e -------------
-  //  -- rax    : number of arguments
-  //  -- rdi    : function
-  //  -- rsi    : context
-  //  -- rsp[0] : return address
-  //  -- rsp[8] : receiver
-  // -----------------------------------
-
-  // 1. Load receiver into rax and check that it's actually a JSDate object.
-  Label receiver_not_date;
-  {
-    StackArgumentsAccessor args(rsp, 0);
-    __ movp(rax, args.GetReceiverOperand());
-    __ JumpIfSmi(rax, &receiver_not_date);
-    __ CmpObjectType(rax, JS_DATE_TYPE, rbx);
-    __ j(not_equal, &receiver_not_date);
-  }
-
-  // 2. Load the specified date field, falling back to the runtime as necessary.
-  if (field_index == JSDate::kDateValue) {
-    __ movp(rax, FieldOperand(rax, JSDate::kValueOffset));
-  } else {
-    if (field_index < JSDate::kFirstUncachedField) {
-      Label stamp_mismatch;
-      __ Load(rdx, ExternalReference::date_cache_stamp(masm->isolate()));
-      __ cmpp(rdx, FieldOperand(rax, JSDate::kCacheStampOffset));
-      __ j(not_equal, &stamp_mismatch, Label::kNear);
-      __ movp(rax, FieldOperand(
-                       rax, JSDate::kValueOffset + field_index * kPointerSize));
-      __ ret(1 * kPointerSize);
-      __ bind(&stamp_mismatch);
-    }
-    FrameScope scope(masm, StackFrame::INTERNAL);
-    __ PrepareCallCFunction(2);
-    __ Move(arg_reg_1, rax);
-    __ Move(arg_reg_2, Smi::FromInt(field_index));
-    __ CallCFunction(
-        ExternalReference::get_date_field_function(masm->isolate()), 2);
-  }
-  __ ret(1 * kPointerSize);
-
-  // 3. Raise a TypeError if the receiver is not a date.
-  __ bind(&receiver_not_date);
-  {
-    FrameScope scope(masm, StackFrame::MANUAL);
-    __ Move(rbx, Smi::FromInt(0));
-    __ EnterBuiltinFrame(rsi, rdi, rbx);
-    __ CallRuntime(Runtime::kThrowNotDateError);
-  }
-}
-
-// static
-void Builtins::Generate_FunctionPrototypeApply(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax     : argc
-  //  -- rsp[0]  : return address
-  //  -- rsp[8]  : argArray
-  //  -- rsp[16] : thisArg
-  //  -- rsp[24] : receiver
-  // -----------------------------------
-
-  // 1. Load receiver into rdi, argArray into rax (if present), remove all
-  // arguments from the stack (including the receiver), and push thisArg (if
-  // present) instead.
-  {
-    Label no_arg_array, no_this_arg;
-    StackArgumentsAccessor args(rsp, rax);
-    __ LoadRoot(rdx, Heap::kUndefinedValueRootIndex);
-    __ movp(rbx, rdx);
-    __ movp(rdi, args.GetReceiverOperand());
-    __ testp(rax, rax);
-    __ j(zero, &no_this_arg, Label::kNear);
-    {
-      __ movp(rdx, args.GetArgumentOperand(1));
-      __ cmpp(rax, Immediate(1));
-      __ j(equal, &no_arg_array, Label::kNear);
-      __ movp(rbx, args.GetArgumentOperand(2));
-      __ bind(&no_arg_array);
-    }
-    __ bind(&no_this_arg);
-    __ PopReturnAddressTo(rcx);
-    __ leap(rsp, Operand(rsp, rax, times_pointer_size, kPointerSize));
-    __ Push(rdx);
-    __ PushReturnAddressFrom(rcx);
-    __ movp(rax, rbx);
-  }
-
-  // ----------- S t a t e -------------
-  //  -- rax     : argArray
-  //  -- rdi     : receiver
-  //  -- rsp[0]  : return address
-  //  -- rsp[8]  : thisArg
-  // -----------------------------------
-
-  // 2. Make sure the receiver is actually callable.
-  Label receiver_not_callable;
-  __ JumpIfSmi(rdi, &receiver_not_callable, Label::kNear);
-  __ movp(rcx, FieldOperand(rdi, HeapObject::kMapOffset));
-  __ testb(FieldOperand(rcx, Map::kBitFieldOffset),
-           Immediate(1 << Map::kIsCallable));
-  __ j(zero, &receiver_not_callable, Label::kNear);
-
-  // 3. Tail call with no arguments if argArray is null or undefined.
-  Label no_arguments;
-  __ JumpIfRoot(rax, Heap::kNullValueRootIndex, &no_arguments, Label::kNear);
-  __ JumpIfRoot(rax, Heap::kUndefinedValueRootIndex, &no_arguments,
-                Label::kNear);
-
-  // 4a. Apply the receiver to the given argArray (passing undefined for
-  // new.target).
-  __ LoadRoot(rdx, Heap::kUndefinedValueRootIndex);
-  __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET);
-
-  // 4b. The argArray is either null or undefined, so we tail call without any
-  // arguments to the receiver. Since we did not create a frame for
-  // Function.prototype.apply() yet, we use a normal Call builtin here.
-  __ bind(&no_arguments);
-  {
-    __ Set(rax, 0);
-    __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
-  }
-
-  // 4c. The receiver is not callable, throw an appropriate TypeError.
-  __ bind(&receiver_not_callable);
-  {
-    StackArgumentsAccessor args(rsp, 0);
-    __ movp(args.GetReceiverOperand(), rdi);
-    __ TailCallRuntime(Runtime::kThrowApplyNonFunction);
-  }
-}
-
-
-// static
-void Builtins::Generate_FunctionPrototypeCall(MacroAssembler* masm) {
-  // Stack Layout:
-  // rsp[0]           : Return address
-  // rsp[8]           : Argument n
-  // rsp[16]          : Argument n-1
-  //  ...
-  // rsp[8 * n]       : Argument 1
-  // rsp[8 * (n + 1)] : Receiver (callable to call)
-  //
-  // rax contains the number of arguments, n, not counting the receiver.
-  //
-  // 1. Make sure we have at least one argument.
-  {
-    Label done;
-    __ testp(rax, rax);
-    __ j(not_zero, &done, Label::kNear);
-    __ PopReturnAddressTo(rbx);
-    __ PushRoot(Heap::kUndefinedValueRootIndex);
-    __ PushReturnAddressFrom(rbx);
-    __ incp(rax);
-    __ bind(&done);
-  }
-
-  // 2. Get the callable to call (passed as receiver) from the stack.
-  {
-    StackArgumentsAccessor args(rsp, rax);
-    __ movp(rdi, args.GetReceiverOperand());
-  }
-
-  // 3. Shift arguments and return address one slot down on the stack
-  //    (overwriting the original receiver).  Adjust argument count to make
-  //    the original first argument the new receiver.
-  {
-    Label loop;
-    __ movp(rcx, rax);
-    StackArgumentsAccessor args(rsp, rcx);
-    __ bind(&loop);
-    __ movp(rbx, args.GetArgumentOperand(1));
-    __ movp(args.GetArgumentOperand(0), rbx);
-    __ decp(rcx);
-    __ j(not_zero, &loop);              // While non-zero.
-    __ DropUnderReturnAddress(1, rbx);  // Drop one slot under return address.
-    __ decp(rax);  // One fewer argument (first argument is new receiver).
-  }
-
-  // 4. Call the callable.
-  // Since we did not create a frame for Function.prototype.call() yet,
-  // we use a normal Call builtin here.
-  __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
-}
-
-
-void Builtins::Generate_ReflectApply(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax     : argc
-  //  -- rsp[0]  : return address
-  //  -- rsp[8]  : argumentsList
-  //  -- rsp[16] : thisArgument
-  //  -- rsp[24] : target
-  //  -- rsp[32] : receiver
-  // -----------------------------------
-
-  // 1. Load target into rdi (if present), argumentsList into rax (if present),
-  // remove all arguments from the stack (including the receiver), and push
-  // thisArgument (if present) instead.
-  {
-    Label done;
-    StackArgumentsAccessor args(rsp, rax);
-    __ LoadRoot(rdi, Heap::kUndefinedValueRootIndex);
-    __ movp(rdx, rdi);
-    __ movp(rbx, rdi);
-    __ cmpp(rax, Immediate(1));
-    __ j(below, &done, Label::kNear);
-    __ movp(rdi, args.GetArgumentOperand(1));  // target
-    __ j(equal, &done, Label::kNear);
-    __ movp(rdx, args.GetArgumentOperand(2));  // thisArgument
-    __ cmpp(rax, Immediate(3));
-    __ j(below, &done, Label::kNear);
-    __ movp(rbx, args.GetArgumentOperand(3));  // argumentsList
-    __ bind(&done);
-    __ PopReturnAddressTo(rcx);
-    __ leap(rsp, Operand(rsp, rax, times_pointer_size, kPointerSize));
-    __ Push(rdx);
-    __ PushReturnAddressFrom(rcx);
-    __ movp(rax, rbx);
-  }
-
-  // ----------- S t a t e -------------
-  //  -- rax     : argumentsList
-  //  -- rdi     : target
-  //  -- rsp[0]  : return address
-  //  -- rsp[8]  : thisArgument
-  // -----------------------------------
-
-  // 2. Make sure the target is actually callable.
-  Label target_not_callable;
-  __ JumpIfSmi(rdi, &target_not_callable, Label::kNear);
-  __ movp(rcx, FieldOperand(rdi, HeapObject::kMapOffset));
-  __ testb(FieldOperand(rcx, Map::kBitFieldOffset),
-           Immediate(1 << Map::kIsCallable));
-  __ j(zero, &target_not_callable, Label::kNear);
-
-  // 3a. Apply the target to the given argumentsList (passing undefined for
-  // new.target).
-  __ LoadRoot(rdx, Heap::kUndefinedValueRootIndex);
-  __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET);
-
-  // 3b. The target is not callable, throw an appropriate TypeError.
-  __ bind(&target_not_callable);
-  {
-    StackArgumentsAccessor args(rsp, 0);
-    __ movp(args.GetReceiverOperand(), rdi);
-    __ TailCallRuntime(Runtime::kThrowApplyNonFunction);
-  }
-}
-
-
-void Builtins::Generate_ReflectConstruct(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax     : argc
-  //  -- rsp[0]  : return address
-  //  -- rsp[8]  : new.target (optional)
-  //  -- rsp[16] : argumentsList
-  //  -- rsp[24] : target
-  //  -- rsp[32] : receiver
-  // -----------------------------------
-
-  // 1. Load target into rdi (if present), argumentsList into rax (if present),
-  // new.target into rdx (if present, otherwise use target), remove all
-  // arguments from the stack (including the receiver), and push thisArgument
-  // (if present) instead.
-  {
-    Label done;
-    StackArgumentsAccessor args(rsp, rax);
-    __ LoadRoot(rdi, Heap::kUndefinedValueRootIndex);
-    __ movp(rdx, rdi);
-    __ movp(rbx, rdi);
-    __ cmpp(rax, Immediate(1));
-    __ j(below, &done, Label::kNear);
-    __ movp(rdi, args.GetArgumentOperand(1));  // target
-    __ movp(rdx, rdi);                         // new.target defaults to target
-    __ j(equal, &done, Label::kNear);
-    __ movp(rbx, args.GetArgumentOperand(2));  // argumentsList
-    __ cmpp(rax, Immediate(3));
-    __ j(below, &done, Label::kNear);
-    __ movp(rdx, args.GetArgumentOperand(3));  // new.target
-    __ bind(&done);
-    __ PopReturnAddressTo(rcx);
-    __ leap(rsp, Operand(rsp, rax, times_pointer_size, kPointerSize));
-    __ PushRoot(Heap::kUndefinedValueRootIndex);
-    __ PushReturnAddressFrom(rcx);
-    __ movp(rax, rbx);
-  }
-
-  // ----------- S t a t e -------------
-  //  -- rax     : argumentsList
-  //  -- rdx     : new.target
-  //  -- rdi     : target
-  //  -- rsp[0]  : return address
-  //  -- rsp[8]  : receiver (undefined)
-  // -----------------------------------
-
-  // 2. Make sure the target is actually a constructor.
-  Label target_not_constructor;
-  __ JumpIfSmi(rdi, &target_not_constructor, Label::kNear);
-  __ movp(rcx, FieldOperand(rdi, HeapObject::kMapOffset));
-  __ testb(FieldOperand(rcx, Map::kBitFieldOffset),
-           Immediate(1 << Map::kIsConstructor));
-  __ j(zero, &target_not_constructor, Label::kNear);
-
-  // 3. Make sure the target is actually a constructor.
-  Label new_target_not_constructor;
-  __ JumpIfSmi(rdx, &new_target_not_constructor, Label::kNear);
-  __ movp(rcx, FieldOperand(rdx, HeapObject::kMapOffset));
-  __ testb(FieldOperand(rcx, Map::kBitFieldOffset),
-           Immediate(1 << Map::kIsConstructor));
-  __ j(zero, &new_target_not_constructor, Label::kNear);
-
-  // 4a. Construct the target with the given new.target and argumentsList.
-  __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET);
-
-  // 4b. The target is not a constructor, throw an appropriate TypeError.
-  __ bind(&target_not_constructor);
-  {
-    StackArgumentsAccessor args(rsp, 0);
-    __ movp(args.GetReceiverOperand(), rdi);
-    __ TailCallRuntime(Runtime::kThrowCalledNonCallable);
-  }
-
-  // 4c. The new.target is not a constructor, throw an appropriate TypeError.
-  __ bind(&new_target_not_constructor);
-  {
-    StackArgumentsAccessor args(rsp, 0);
-    __ movp(args.GetReceiverOperand(), rdx);
-    __ TailCallRuntime(Runtime::kThrowCalledNonCallable);
-  }
-}
-
-
-void Builtins::Generate_InternalArrayCode(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax    : argc
-  //  -- rsp[0] : return address
-  //  -- rsp[8] : last argument
-  // -----------------------------------
-  Label generic_array_code;
-
-  // Get the InternalArray function.
-  __ LoadNativeContextSlot(Context::INTERNAL_ARRAY_FUNCTION_INDEX, rdi);
-
-  if (FLAG_debug_code) {
-    // Initial map for the builtin InternalArray functions should be maps.
-    __ movp(rbx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset));
-    // Will both indicate a NULL and a Smi.
-    STATIC_ASSERT(kSmiTag == 0);
-    Condition not_smi = NegateCondition(masm->CheckSmi(rbx));
-    __ Check(not_smi, kUnexpectedInitialMapForInternalArrayFunction);
-    __ CmpObjectType(rbx, MAP_TYPE, rcx);
-    __ Check(equal, kUnexpectedInitialMapForInternalArrayFunction);
-  }
-
-  // Run the native code for the InternalArray function called as a normal
-  // function.
-  // tail call a stub
-  InternalArrayConstructorStub stub(masm->isolate());
-  __ TailCallStub(&stub);
-}
-
-
-void Builtins::Generate_ArrayCode(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax    : argc
-  //  -- rsp[0] : return address
-  //  -- rsp[8] : last argument
-  // -----------------------------------
-  Label generic_array_code;
-
-  // Get the Array function.
-  __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, rdi);
-
-  if (FLAG_debug_code) {
-    // Initial map for the builtin Array functions should be maps.
-    __ movp(rbx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset));
-    // Will both indicate a NULL and a Smi.
-    STATIC_ASSERT(kSmiTag == 0);
-    Condition not_smi = NegateCondition(masm->CheckSmi(rbx));
-    __ Check(not_smi, kUnexpectedInitialMapForArrayFunction);
-    __ CmpObjectType(rbx, MAP_TYPE, rcx);
-    __ Check(equal, kUnexpectedInitialMapForArrayFunction);
-  }
-
-  __ movp(rdx, rdi);
-  // Run the native code for the Array function called as a normal function.
-  // tail call a stub
-  __ LoadRoot(rbx, Heap::kUndefinedValueRootIndex);
-  ArrayConstructorStub stub(masm->isolate());
-  __ TailCallStub(&stub);
-}
-
-// static
-void Builtins::Generate_MathMaxMin(MacroAssembler* masm, MathMaxMinKind kind) {
-  // ----------- S t a t e -------------
-  //  -- rax                 : number of arguments
-  //  -- rdi                 : function
-  //  -- rsi                 : context
-  //  -- rsp[0]              : return address
-  //  -- rsp[(argc - n) * 8] : arg[n] (zero-based)
-  //  -- rsp[(argc + 1) * 8] : receiver
-  // -----------------------------------
-  Condition const cc = (kind == MathMaxMinKind::kMin) ? below : above;
-  Heap::RootListIndex const root_index =
-      (kind == MathMaxMinKind::kMin) ? Heap::kInfinityValueRootIndex
-                                     : Heap::kMinusInfinityValueRootIndex;
-  XMMRegister const reg = (kind == MathMaxMinKind::kMin) ? xmm1 : xmm0;
-
-  // Load the accumulator with the default return value (either -Infinity or
-  // +Infinity), with the tagged value in rdx and the double value in xmm0.
-  __ LoadRoot(rdx, root_index);
-  __ Movsd(xmm0, FieldOperand(rdx, HeapNumber::kValueOffset));
-  __ Move(rcx, rax);
-
-  Label done_loop, loop;
-  __ bind(&loop);
-  {
-    // Check if all parameters done.
-    __ testp(rcx, rcx);
-    __ j(zero, &done_loop);
-
-    // Load the next parameter tagged value into rbx.
-    __ movp(rbx, Operand(rsp, rcx, times_pointer_size, 0));
-
-    // Load the double value of the parameter into xmm1, maybe converting the
-    // parameter to a number first using the ToNumber builtin if necessary.
-    Label convert, convert_smi, convert_number, done_convert;
-    __ bind(&convert);
-    __ JumpIfSmi(rbx, &convert_smi);
-    __ JumpIfRoot(FieldOperand(rbx, HeapObject::kMapOffset),
-                  Heap::kHeapNumberMapRootIndex, &convert_number);
-    {
-      // Parameter is not a Number, use the ToNumber builtin to convert it.
-      FrameScope scope(masm, StackFrame::MANUAL);
-      __ Integer32ToSmi(rax, rax);
-      __ Integer32ToSmi(rcx, rcx);
-      __ EnterBuiltinFrame(rsi, rdi, rax);
-      __ Push(rcx);
-      __ Push(rdx);
-      __ movp(rax, rbx);
-      __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
-      __ movp(rbx, rax);
-      __ Pop(rdx);
-      __ Pop(rcx);
-      __ LeaveBuiltinFrame(rsi, rdi, rax);
-      __ SmiToInteger32(rcx, rcx);
-      __ SmiToInteger32(rax, rax);
-      {
-        // Restore the double accumulator value (xmm0).
-        Label restore_smi, done_restore;
-        __ JumpIfSmi(rdx, &restore_smi, Label::kNear);
-        __ Movsd(xmm0, FieldOperand(rdx, HeapNumber::kValueOffset));
-        __ jmp(&done_restore, Label::kNear);
-        __ bind(&restore_smi);
-        __ SmiToDouble(xmm0, rdx);
-        __ bind(&done_restore);
-      }
-    }
-    __ jmp(&convert);
-    __ bind(&convert_number);
-    __ Movsd(xmm1, FieldOperand(rbx, HeapNumber::kValueOffset));
-    __ jmp(&done_convert, Label::kNear);
-    __ bind(&convert_smi);
-    __ SmiToDouble(xmm1, rbx);
-    __ bind(&done_convert);
-
-    // Perform the actual comparison with the accumulator value on the left hand
-    // side (xmm0) and the next parameter value on the right hand side (xmm1).
-    Label compare_equal, compare_nan, compare_swap, done_compare;
-    __ Ucomisd(xmm0, xmm1);
-    __ j(parity_even, &compare_nan, Label::kNear);
-    __ j(cc, &done_compare, Label::kNear);
-    __ j(equal, &compare_equal, Label::kNear);
-
-    // Result is on the right hand side.
-    __ bind(&compare_swap);
-    __ Movaps(xmm0, xmm1);
-    __ Move(rdx, rbx);
-    __ jmp(&done_compare, Label::kNear);
-
-    // At least one side is NaN, which means that the result will be NaN too.
-    __ bind(&compare_nan);
-    __ LoadRoot(rdx, Heap::kNanValueRootIndex);
-    __ Movsd(xmm0, FieldOperand(rdx, HeapNumber::kValueOffset));
-    __ jmp(&done_compare, Label::kNear);
-
-    // Left and right hand side are equal, check for -0 vs. +0.
-    __ bind(&compare_equal);
-    __ Movmskpd(kScratchRegister, reg);
-    __ testl(kScratchRegister, Immediate(1));
-    __ j(not_zero, &compare_swap);
-
-    __ bind(&done_compare);
-    __ decp(rcx);
-    __ jmp(&loop);
-  }
-
-  __ bind(&done_loop);
-  __ PopReturnAddressTo(rcx);
-  __ leap(rsp, Operand(rsp, rax, times_pointer_size, kPointerSize));
-  __ PushReturnAddressFrom(rcx);
-  __ movp(rax, rdx);
-  __ Ret();
-}
-
-// static
-void Builtins::Generate_NumberConstructor(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax                 : number of arguments
-  //  -- rdi                 : constructor function
-  //  -- rsi                 : context
-  //  -- rsp[0]              : return address
-  //  -- rsp[(argc - n) * 8] : arg[n] (zero-based)
-  //  -- rsp[(argc + 1) * 8] : receiver
-  // -----------------------------------
-
-  // 1. Load the first argument into rbx.
-  Label no_arguments;
-  {
-    StackArgumentsAccessor args(rsp, rax);
-    __ testp(rax, rax);
-    __ j(zero, &no_arguments, Label::kNear);
-    __ movp(rbx, args.GetArgumentOperand(1));
-  }
-
-  // 2a. Convert the first argument to a number.
-  {
-    FrameScope scope(masm, StackFrame::MANUAL);
-    __ Integer32ToSmi(rax, rax);
-    __ EnterBuiltinFrame(rsi, rdi, rax);
-    __ movp(rax, rbx);
-    __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
-    __ LeaveBuiltinFrame(rsi, rdi, rbx);  // Argc popped to rbx.
-    __ SmiToInteger32(rbx, rbx);
-  }
-
-  {
-    // Drop all arguments including the receiver.
-    __ PopReturnAddressTo(rcx);
-    __ leap(rsp, Operand(rsp, rbx, times_pointer_size, kPointerSize));
-    __ PushReturnAddressFrom(rcx);
-    __ Ret();
-  }
-
-  // 2b. No arguments, return +0 (already in rax).
-  __ bind(&no_arguments);
-  __ ret(1 * kPointerSize);
-}
-
-
-// static
-void Builtins::Generate_NumberConstructor_ConstructStub(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax                 : number of arguments
-  //  -- rdi                 : constructor function
-  //  -- rdx                 : new target
-  //  -- rsi                 : context
-  //  -- rsp[0]              : return address
-  //  -- rsp[(argc - n) * 8] : arg[n] (zero-based)
-  //  -- rsp[(argc + 1) * 8] : receiver
-  // -----------------------------------
-
-  // 1. Make sure we operate in the context of the called function.
-  __ movp(rsi, FieldOperand(rdi, JSFunction::kContextOffset));
-
-  // Store argc in r8.
-  __ Integer32ToSmi(r8, rax);
-
-  // 2. Load the first argument into rbx.
-  {
-    StackArgumentsAccessor args(rsp, rax);
-    Label no_arguments, done;
-    __ testp(rax, rax);
-    __ j(zero, &no_arguments, Label::kNear);
-    __ movp(rbx, args.GetArgumentOperand(1));
-    __ jmp(&done, Label::kNear);
-    __ bind(&no_arguments);
-    __ Move(rbx, Smi::FromInt(0));
-    __ bind(&done);
-  }
-
-  // 3. Make sure rbx is a number.
-  {
-    Label done_convert;
-    __ JumpIfSmi(rbx, &done_convert);
-    __ CompareRoot(FieldOperand(rbx, HeapObject::kMapOffset),
-                   Heap::kHeapNumberMapRootIndex);
-    __ j(equal, &done_convert);
-    {
-      FrameScope scope(masm, StackFrame::MANUAL);
-      __ EnterBuiltinFrame(rsi, rdi, r8);
-      __ Push(rdx);
-      __ Move(rax, rbx);
-      __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
-      __ Move(rbx, rax);
-      __ Pop(rdx);
-      __ LeaveBuiltinFrame(rsi, rdi, r8);
-    }
-    __ bind(&done_convert);
-  }
-
-  // 4. Check if new target and constructor differ.
-  Label drop_frame_and_ret, new_object;
-  __ cmpp(rdx, rdi);
-  __ j(not_equal, &new_object);
-
-  // 5. Allocate a JSValue wrapper for the number.
-  __ AllocateJSValue(rax, rdi, rbx, rcx, &new_object);
-  __ jmp(&drop_frame_and_ret, Label::kNear);
-
-  // 6. Fallback to the runtime to create new object.
-  __ bind(&new_object);
-  {
-    FrameScope scope(masm, StackFrame::MANUAL);
-    __ EnterBuiltinFrame(rsi, rdi, r8);
-    __ Push(rbx);  // the first argument
-    FastNewObjectStub stub(masm->isolate());
-    __ CallStub(&stub);
-    __ Pop(FieldOperand(rax, JSValue::kValueOffset));
-    __ LeaveBuiltinFrame(rsi, rdi, r8);
-  }
-
-  __ bind(&drop_frame_and_ret);
-  {
-    // Drop all arguments including the receiver.
-    __ PopReturnAddressTo(rcx);
-    __ SmiToInteger32(r8, r8);
-    __ leap(rsp, Operand(rsp, r8, times_pointer_size, kPointerSize));
-    __ PushReturnAddressFrom(rcx);
-    __ Ret();
-  }
-}
-
-
-// static
-void Builtins::Generate_StringConstructor(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax                 : number of arguments
-  //  -- rdi                 : constructor function
-  //  -- rsi                 : context
-  //  -- rsp[0]              : return address
-  //  -- rsp[(argc - n) * 8] : arg[n] (zero-based)
-  //  -- rsp[(argc + 1) * 8] : receiver
-  // -----------------------------------
-
-  // 1. Load the first argument into rax.
-  Label no_arguments;
-  {
-    StackArgumentsAccessor args(rsp, rax);
-    __ Integer32ToSmi(r8, rax);  // Store argc in r8.
-    __ testp(rax, rax);
-    __ j(zero, &no_arguments, Label::kNear);
-    __ movp(rax, args.GetArgumentOperand(1));
-  }
-
-  // 2a. At least one argument, return rax if it's a string, otherwise
-  // dispatch to appropriate conversion.
-  Label drop_frame_and_ret, to_string, symbol_descriptive_string;
-  {
-    __ JumpIfSmi(rax, &to_string, Label::kNear);
-    STATIC_ASSERT(FIRST_NONSTRING_TYPE == SYMBOL_TYPE);
-    __ CmpObjectType(rax, FIRST_NONSTRING_TYPE, rdx);
-    __ j(above, &to_string, Label::kNear);
-    __ j(equal, &symbol_descriptive_string, Label::kNear);
-    __ jmp(&drop_frame_and_ret, Label::kNear);
-  }
-
-  // 2b. No arguments, return the empty string (and pop the receiver).
-  __ bind(&no_arguments);
-  {
-    __ LoadRoot(rax, Heap::kempty_stringRootIndex);
-    __ ret(1 * kPointerSize);
-  }
-
-  // 3a. Convert rax to a string.
-  __ bind(&to_string);
-  {
-    FrameScope scope(masm, StackFrame::MANUAL);
-    ToStringStub stub(masm->isolate());
-    __ EnterBuiltinFrame(rsi, rdi, r8);
-    __ CallStub(&stub);
-    __ LeaveBuiltinFrame(rsi, rdi, r8);
-  }
-  __ jmp(&drop_frame_and_ret, Label::kNear);
-
-  // 3b. Convert symbol in rax to a string.
-  __ bind(&symbol_descriptive_string);
-  {
-    __ PopReturnAddressTo(rcx);
-    __ SmiToInteger32(r8, r8);
-    __ leap(rsp, Operand(rsp, r8, times_pointer_size, kPointerSize));
-    __ Push(rax);
-    __ PushReturnAddressFrom(rcx);
-    __ TailCallRuntime(Runtime::kSymbolDescriptiveString);
-  }
-
-  __ bind(&drop_frame_and_ret);
-  {
-    // Drop all arguments including the receiver.
-    __ PopReturnAddressTo(rcx);
-    __ SmiToInteger32(r8, r8);
-    __ leap(rsp, Operand(rsp, r8, times_pointer_size, kPointerSize));
-    __ PushReturnAddressFrom(rcx);
-    __ Ret();
-  }
-}
-
-
-// static
-void Builtins::Generate_StringConstructor_ConstructStub(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax                 : number of arguments
-  //  -- rdi                 : constructor function
-  //  -- rdx                 : new target
-  //  -- rsi                 : context
-  //  -- rsp[0]              : return address
-  //  -- rsp[(argc - n) * 8] : arg[n] (zero-based)
-  //  -- rsp[(argc + 1) * 8] : receiver
-  // -----------------------------------
-
-  // 1. Make sure we operate in the context of the called function.
-  __ movp(rsi, FieldOperand(rdi, JSFunction::kContextOffset));
-
-  // Store argc in r8.
-  __ Integer32ToSmi(r8, rax);
-
-  // 2. Load the first argument into rbx.
-  {
-    StackArgumentsAccessor args(rsp, rax);
-    Label no_arguments, done;
-    __ testp(rax, rax);
-    __ j(zero, &no_arguments, Label::kNear);
-    __ movp(rbx, args.GetArgumentOperand(1));
-    __ jmp(&done, Label::kNear);
-    __ bind(&no_arguments);
-    __ LoadRoot(rbx, Heap::kempty_stringRootIndex);
-    __ bind(&done);
-  }
-
-  // 3. Make sure rbx is a string.
-  {
-    Label convert, done_convert;
-    __ JumpIfSmi(rbx, &convert, Label::kNear);
-    __ CmpObjectType(rbx, FIRST_NONSTRING_TYPE, rcx);
-    __ j(below, &done_convert);
-    __ bind(&convert);
-    {
-      FrameScope scope(masm, StackFrame::MANUAL);
-      ToStringStub stub(masm->isolate());
-      __ EnterBuiltinFrame(rsi, rdi, r8);
-      __ Push(rdx);
-      __ Move(rax, rbx);
-      __ CallStub(&stub);
-      __ Move(rbx, rax);
-      __ Pop(rdx);
-      __ LeaveBuiltinFrame(rsi, rdi, r8);
-    }
-    __ bind(&done_convert);
-  }
-
-  // 4. Check if new target and constructor differ.
-  Label drop_frame_and_ret, new_object;
-  __ cmpp(rdx, rdi);
-  __ j(not_equal, &new_object);
-
-  // 5. Allocate a JSValue wrapper for the string.
-  __ AllocateJSValue(rax, rdi, rbx, rcx, &new_object);
-  __ jmp(&drop_frame_and_ret, Label::kNear);
-
-  // 6. Fallback to the runtime to create new object.
-  __ bind(&new_object);
-  {
-    FrameScope scope(masm, StackFrame::MANUAL);
-    __ EnterBuiltinFrame(rsi, rdi, r8);
-    __ Push(rbx);  // the first argument
-    FastNewObjectStub stub(masm->isolate());
-    __ CallStub(&stub);
-    __ Pop(FieldOperand(rax, JSValue::kValueOffset));
-    __ LeaveBuiltinFrame(rsi, rdi, r8);
-  }
-
-  __ bind(&drop_frame_and_ret);
-  {
-    // Drop all arguments including the receiver.
-    __ PopReturnAddressTo(rcx);
-    __ SmiToInteger32(r8, r8);
-    __ leap(rsp, Operand(rsp, r8, times_pointer_size, kPointerSize));
-    __ PushReturnAddressFrom(rcx);
-    __ Ret();
-  }
-}
-
-
-static void ArgumentsAdaptorStackCheck(MacroAssembler* masm,
-                                       Label* stack_overflow) {
-  // ----------- S t a t e -------------
-  //  -- rax : actual number of arguments
-  //  -- rbx : expected number of arguments
-  //  -- rdx : new target (passed through to callee)
-  //  -- rdi : function (passed through to callee)
-  // -----------------------------------
-  // Check the stack for overflow. We are not trying to catch
-  // interruptions (e.g. debug break and preemption) here, so the "real stack
-  // limit" is checked.
-  Label okay;
-  __ LoadRoot(r8, Heap::kRealStackLimitRootIndex);
-  __ movp(rcx, rsp);
-  // Make rcx the space we have left. The stack might already be overflowed
-  // here which will cause rcx to become negative.
-  __ subp(rcx, r8);
-  // Make r8 the space we need for the array when it is unrolled onto the
-  // stack.
-  __ movp(r8, rbx);
-  __ shlp(r8, Immediate(kPointerSizeLog2));
-  // Check if the arguments will overflow the stack.
-  __ cmpp(rcx, r8);
-  __ j(less_equal, stack_overflow);  // Signed comparison.
-}
-
-
-static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) {
-  __ pushq(rbp);
-  __ movp(rbp, rsp);
-
-  // Store the arguments adaptor context sentinel.
-  __ Push(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
-
-  // Push the function on the stack.
-  __ Push(rdi);
-
-  // Preserve the number of arguments on the stack. Must preserve rax,
-  // rbx and rcx because these registers are used when copying the
-  // arguments and the receiver.
-  __ Integer32ToSmi(r8, rax);
-  __ Push(r8);
-}
-
-
-static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) {
-  // Retrieve the number of arguments from the stack. Number is a Smi.
-  __ movp(rbx, Operand(rbp, ArgumentsAdaptorFrameConstants::kLengthOffset));
-
-  // Leave the frame.
-  __ movp(rsp, rbp);
-  __ popq(rbp);
-
-  // Remove caller arguments from the stack.
-  __ PopReturnAddressTo(rcx);
-  SmiIndex index = masm->SmiToIndex(rbx, rbx, kPointerSizeLog2);
-  __ leap(rsp, Operand(rsp, index.reg, index.scale, 1 * kPointerSize));
-  __ PushReturnAddressFrom(rcx);
-}
-
-// static
-void Builtins::Generate_AllocateInNewSpace(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rdx    : requested object size (untagged)
-  //  -- rsp[0] : return address
-  // -----------------------------------
-  __ Integer32ToSmi(rdx, rdx);
-  __ PopReturnAddressTo(rcx);
-  __ Push(rdx);
-  __ PushReturnAddressFrom(rcx);
-  __ Move(rsi, Smi::FromInt(0));
-  __ TailCallRuntime(Runtime::kAllocateInNewSpace);
-}
-
-// static
-void Builtins::Generate_AllocateInOldSpace(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rdx    : requested object size (untagged)
-  //  -- rsp[0] : return address
-  // -----------------------------------
-  __ Integer32ToSmi(rdx, rdx);
-  __ PopReturnAddressTo(rcx);
-  __ Push(rdx);
-  __ Push(Smi::FromInt(AllocateTargetSpace::encode(OLD_SPACE)));
-  __ PushReturnAddressFrom(rcx);
-  __ Move(rsi, Smi::FromInt(0));
-  __ TailCallRuntime(Runtime::kAllocateInTargetSpace);
-}
-
-void Builtins::Generate_StringToNumber(MacroAssembler* masm) {
-  // The StringToNumber stub takes one argument in rax.
-  __ AssertString(rax);
-
-  // Check if string has a cached array index.
-  Label runtime;
-  __ testl(FieldOperand(rax, String::kHashFieldOffset),
-           Immediate(String::kContainsCachedArrayIndexMask));
-  __ j(not_zero, &runtime, Label::kNear);
-  __ movl(rax, FieldOperand(rax, String::kHashFieldOffset));
-  __ IndexFromHash(rax, rax);
-  __ Ret();
-
-  __ bind(&runtime);
-  {
-    FrameScope frame(masm, StackFrame::INTERNAL);
-    // Push argument.
-    __ Push(rax);
-    // We cannot use a tail call here because this builtin can also be called
-    // from wasm.
-    __ CallRuntime(Runtime::kStringToNumber);
-  }
-  __ Ret();
-}
-
-// static
-void Builtins::Generate_ToNumber(MacroAssembler* masm) {
-  // The ToNumber stub takes one argument in rax.
-  Label not_smi;
-  __ JumpIfNotSmi(rax, &not_smi, Label::kNear);
-  __ Ret();
-  __ bind(&not_smi);
-
-  Label not_heap_number;
-  __ CompareRoot(FieldOperand(rax, HeapObject::kMapOffset),
-                 Heap::kHeapNumberMapRootIndex);
-  __ j(not_equal, &not_heap_number, Label::kNear);
-  __ Ret();
-  __ bind(&not_heap_number);
-
-  __ Jump(masm->isolate()->builtins()->NonNumberToNumber(),
-          RelocInfo::CODE_TARGET);
-}
-
-// static
-void Builtins::Generate_NonNumberToNumber(MacroAssembler* masm) {
-  // The NonNumberToNumber stub takes one argument in rax.
-  __ AssertNotNumber(rax);
-
-  Label not_string;
-  __ CmpObjectType(rax, FIRST_NONSTRING_TYPE, rdi);
-  // rax: object
-  // rdi: object map
-  __ j(above_equal, &not_string, Label::kNear);
-  __ Jump(masm->isolate()->builtins()->StringToNumber(),
-          RelocInfo::CODE_TARGET);
-  __ bind(&not_string);
-
-  Label not_oddball;
-  __ CmpInstanceType(rdi, ODDBALL_TYPE);
-  __ j(not_equal, &not_oddball, Label::kNear);
-  __ movp(rax, FieldOperand(rax, Oddball::kToNumberOffset));
-  __ Ret();
-  __ bind(&not_oddball);
-  {
-    FrameScope frame(masm, StackFrame::INTERNAL);
-    // Push argument.
-    __ Push(rax);
-    // We cannot use a tail call here because this builtin can also be called
-    // from wasm.
-    __ CallRuntime(Runtime::kToNumber);
-  }
-  __ Ret();
-}
-
-void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax : actual number of arguments
-  //  -- rbx : expected number of arguments
-  //  -- rdx : new target (passed through to callee)
-  //  -- rdi : function (passed through to callee)
-  // -----------------------------------
-
-  Label invoke, dont_adapt_arguments, stack_overflow;
-  Counters* counters = masm->isolate()->counters();
-  __ IncrementCounter(counters->arguments_adaptors(), 1);
-
-  Label enough, too_few;
-  __ cmpp(rax, rbx);
-  __ j(less, &too_few);
-  __ cmpp(rbx, Immediate(SharedFunctionInfo::kDontAdaptArgumentsSentinel));
-  __ j(equal, &dont_adapt_arguments);
-
-  {  // Enough parameters: Actual >= expected.
-    __ bind(&enough);
-    EnterArgumentsAdaptorFrame(masm);
-    ArgumentsAdaptorStackCheck(masm, &stack_overflow);
-
-    // Copy receiver and all expected arguments.
-    const int offset = StandardFrameConstants::kCallerSPOffset;
-    __ leap(rax, Operand(rbp, rax, times_pointer_size, offset));
-    __ Set(r8, -1);  // account for receiver
-
-    Label copy;
-    __ bind(&copy);
-    __ incp(r8);
-    __ Push(Operand(rax, 0));
-    __ subp(rax, Immediate(kPointerSize));
-    __ cmpp(r8, rbx);
-    __ j(less, &copy);
-    __ jmp(&invoke);
-  }
-
-  {  // Too few parameters: Actual < expected.
-    __ bind(&too_few);
-
-    EnterArgumentsAdaptorFrame(masm);
-    ArgumentsAdaptorStackCheck(masm, &stack_overflow);
-
-    // Copy receiver and all actual arguments.
-    const int offset = StandardFrameConstants::kCallerSPOffset;
-    __ leap(rdi, Operand(rbp, rax, times_pointer_size, offset));
-    __ Set(r8, -1);  // account for receiver
-
-    Label copy;
-    __ bind(&copy);
-    __ incp(r8);
-    __ Push(Operand(rdi, 0));
-    __ subp(rdi, Immediate(kPointerSize));
-    __ cmpp(r8, rax);
-    __ j(less, &copy);
-
-    // Fill remaining expected arguments with undefined values.
-    Label fill;
-    __ LoadRoot(kScratchRegister, Heap::kUndefinedValueRootIndex);
-    __ bind(&fill);
-    __ incp(r8);
-    __ Push(kScratchRegister);
-    __ cmpp(r8, rbx);
-    __ j(less, &fill);
-
-    // Restore function pointer.
-    __ movp(rdi, Operand(rbp, ArgumentsAdaptorFrameConstants::kFunctionOffset));
-  }
-
-  // Call the entry point.
-  __ bind(&invoke);
-  __ movp(rax, rbx);
-  // rax : expected number of arguments
-  // rdx : new target (passed through to callee)
-  // rdi : function (passed through to callee)
-  __ movp(rcx, FieldOperand(rdi, JSFunction::kCodeEntryOffset));
-  __ call(rcx);
-
-  // Store offset of return address for deoptimizer.
-  masm->isolate()->heap()->SetArgumentsAdaptorDeoptPCOffset(masm->pc_offset());
-
-  // Leave frame and return.
-  LeaveArgumentsAdaptorFrame(masm);
-  __ ret(0);
-
-  // -------------------------------------------
-  // Dont adapt arguments.
-  // -------------------------------------------
-  __ bind(&dont_adapt_arguments);
-  __ movp(rcx, FieldOperand(rdi, JSFunction::kCodeEntryOffset));
-  __ jmp(rcx);
-
-  __ bind(&stack_overflow);
-  {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ CallRuntime(Runtime::kThrowStackOverflow);
-    __ int3();
-  }
-}
-
-
-// static
-void Builtins::Generate_Apply(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax    : argumentsList
-  //  -- rdi    : target
-  //  -- rdx    : new.target (checked to be constructor or undefined)
-  //  -- rsp[0] : return address.
-  //  -- rsp[8] : thisArgument
-  // -----------------------------------
-
-  // Create the list of arguments from the array-like argumentsList.
-  {
-    Label create_arguments, create_array, create_runtime, done_create;
-    __ JumpIfSmi(rax, &create_runtime);
-
-    // Load the map of argumentsList into rcx.
-    __ movp(rcx, FieldOperand(rax, HeapObject::kMapOffset));
-
-    // Load native context into rbx.
-    __ movp(rbx, NativeContextOperand());
-
-    // Check if argumentsList is an (unmodified) arguments object.
-    __ cmpp(rcx, ContextOperand(rbx, Context::SLOPPY_ARGUMENTS_MAP_INDEX));
-    __ j(equal, &create_arguments);
-    __ cmpp(rcx, ContextOperand(rbx, Context::STRICT_ARGUMENTS_MAP_INDEX));
-    __ j(equal, &create_arguments);
-
-    // Check if argumentsList is a fast JSArray.
-    __ CmpInstanceType(rcx, JS_ARRAY_TYPE);
-    __ j(equal, &create_array);
-
-    // Ask the runtime to create the list (actually a FixedArray).
-    __ bind(&create_runtime);
-    {
-      FrameScope scope(masm, StackFrame::INTERNAL);
-      __ Push(rdi);
-      __ Push(rdx);
-      __ Push(rax);
-      __ CallRuntime(Runtime::kCreateListFromArrayLike);
-      __ Pop(rdx);
-      __ Pop(rdi);
-      __ SmiToInteger32(rbx, FieldOperand(rax, FixedArray::kLengthOffset));
-    }
-    __ jmp(&done_create);
-
-    // Try to create the list from an arguments object.
-    __ bind(&create_arguments);
-    __ movp(rbx, FieldOperand(rax, JSArgumentsObject::kLengthOffset));
-    __ movp(rcx, FieldOperand(rax, JSObject::kElementsOffset));
-    __ cmpp(rbx, FieldOperand(rcx, FixedArray::kLengthOffset));
-    __ j(not_equal, &create_runtime);
-    __ SmiToInteger32(rbx, rbx);
-    __ movp(rax, rcx);
-    __ jmp(&done_create);
-
-    // Try to create the list from a JSArray object.
-    __ bind(&create_array);
-    __ movzxbp(rcx, FieldOperand(rcx, Map::kBitField2Offset));
-    __ DecodeField<Map::ElementsKindBits>(rcx);
-    STATIC_ASSERT(FAST_SMI_ELEMENTS == 0);
-    STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1);
-    STATIC_ASSERT(FAST_ELEMENTS == 2);
-    __ cmpl(rcx, Immediate(FAST_ELEMENTS));
-    __ j(above, &create_runtime);
-    __ cmpl(rcx, Immediate(FAST_HOLEY_SMI_ELEMENTS));
-    __ j(equal, &create_runtime);
-    __ SmiToInteger32(rbx, FieldOperand(rax, JSArray::kLengthOffset));
-    __ movp(rax, FieldOperand(rax, JSArray::kElementsOffset));
-
-    __ bind(&done_create);
-  }
-
-  // Check for stack overflow.
-  {
-    // Check the stack for overflow. We are not trying to catch interruptions
-    // (i.e. debug break and preemption) here, so check the "real stack limit".
-    Label done;
-    __ LoadRoot(kScratchRegister, Heap::kRealStackLimitRootIndex);
-    __ movp(rcx, rsp);
-    // Make rcx the space we have left. The stack might already be overflowed
-    // here which will cause rcx to become negative.
-    __ subp(rcx, kScratchRegister);
-    __ sarp(rcx, Immediate(kPointerSizeLog2));
-    // Check if the arguments will overflow the stack.
-    __ cmpp(rcx, rbx);
-    __ j(greater, &done, Label::kNear);  // Signed comparison.
-    __ TailCallRuntime(Runtime::kThrowStackOverflow);
-    __ bind(&done);
-  }
-
-  // ----------- S t a t e -------------
-  //  -- rdi    : target
-  //  -- rax    : args (a FixedArray built from argumentsList)
-  //  -- rbx    : len (number of elements to push from args)
-  //  -- rdx    : new.target (checked to be constructor or undefined)
-  //  -- rsp[0] : return address.
-  //  -- rsp[8] : thisArgument
-  // -----------------------------------
-
-  // Push arguments onto the stack (thisArgument is already on the stack).
-  {
-    __ PopReturnAddressTo(r8);
-    __ Set(rcx, 0);
-    Label done, loop;
-    __ bind(&loop);
-    __ cmpl(rcx, rbx);
-    __ j(equal, &done, Label::kNear);
-    __ Push(
-        FieldOperand(rax, rcx, times_pointer_size, FixedArray::kHeaderSize));
-    __ incl(rcx);
-    __ jmp(&loop);
-    __ bind(&done);
-    __ PushReturnAddressFrom(r8);
-    __ Move(rax, rcx);
-  }
-
-  // Dispatch to Call or Construct depending on whether new.target is undefined.
-  {
-    __ CompareRoot(rdx, Heap::kUndefinedValueRootIndex);
-    __ j(equal, masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
-    __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET);
-  }
-}
-
-namespace {
-
-// Drops top JavaScript frame and an arguments adaptor frame below it (if
-// present) preserving all the arguments prepared for current call.
-// Does nothing if debugger is currently active.
-// ES6 14.6.3. PrepareForTailCall
-//
-// Stack structure for the function g() tail calling f():
-//
-// ------- Caller frame: -------
-// |  ...
-// |  g()'s arg M
-// |  ...
-// |  g()'s arg 1
-// |  g()'s receiver arg
-// |  g()'s caller pc
-// ------- g()'s frame: -------
-// |  g()'s caller fp      <- fp
-// |  g()'s context
-// |  function pointer: g
-// |  -------------------------
-// |  ...
-// |  ...
-// |  f()'s arg N
-// |  ...
-// |  f()'s arg 1
-// |  f()'s receiver arg
-// |  f()'s caller pc      <- sp
-// ----------------------
-//
-void PrepareForTailCall(MacroAssembler* masm, Register args_reg,
-                        Register scratch1, Register scratch2,
-                        Register scratch3) {
-  DCHECK(!AreAliased(args_reg, scratch1, scratch2, scratch3));
-  Comment cmnt(masm, "[ PrepareForTailCall");
-
-  // Prepare for tail call only if ES2015 tail call elimination is active.
-  Label done;
-  ExternalReference is_tail_call_elimination_enabled =
-      ExternalReference::is_tail_call_elimination_enabled_address(
-          masm->isolate());
-  __ Move(kScratchRegister, is_tail_call_elimination_enabled);
-  __ cmpb(Operand(kScratchRegister, 0), Immediate(0));
-  __ j(equal, &done);
-
-  // Drop possible interpreter handler/stub frame.
-  {
-    Label no_interpreter_frame;
-    __ Cmp(Operand(rbp, CommonFrameConstants::kContextOrFrameTypeOffset),
-           Smi::FromInt(StackFrame::STUB));
-    __ j(not_equal, &no_interpreter_frame, Label::kNear);
-    __ movp(rbp, Operand(rbp, StandardFrameConstants::kCallerFPOffset));
-    __ bind(&no_interpreter_frame);
-  }
-
-  // Check if next frame is an arguments adaptor frame.
-  Register caller_args_count_reg = scratch1;
-  Label no_arguments_adaptor, formal_parameter_count_loaded;
-  __ movp(scratch2, Operand(rbp, StandardFrameConstants::kCallerFPOffset));
-  __ Cmp(Operand(scratch2, CommonFrameConstants::kContextOrFrameTypeOffset),
-         Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
-  __ j(not_equal, &no_arguments_adaptor, Label::kNear);
-
-  // Drop current frame and load arguments count from arguments adaptor frame.
-  __ movp(rbp, scratch2);
-  __ SmiToInteger32(
-      caller_args_count_reg,
-      Operand(rbp, ArgumentsAdaptorFrameConstants::kLengthOffset));
-  __ jmp(&formal_parameter_count_loaded, Label::kNear);
-
-  __ bind(&no_arguments_adaptor);
-  // Load caller's formal parameter count
-  __ movp(scratch1, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset));
-  __ movp(scratch1,
-          FieldOperand(scratch1, JSFunction::kSharedFunctionInfoOffset));
-  __ LoadSharedFunctionInfoSpecialField(
-      caller_args_count_reg, scratch1,
-      SharedFunctionInfo::kFormalParameterCountOffset);
-
-  __ bind(&formal_parameter_count_loaded);
-
-  ParameterCount callee_args_count(args_reg);
-  __ PrepareForTailCall(callee_args_count, caller_args_count_reg, scratch2,
-                        scratch3, ReturnAddressState::kOnStack);
-  __ bind(&done);
-}
-}  // namespace
-
-// static
-void Builtins::Generate_CallFunction(MacroAssembler* masm,
-                                     ConvertReceiverMode mode,
-                                     TailCallMode tail_call_mode) {
-  // ----------- S t a t e -------------
-  //  -- rax : the number of arguments (not including the receiver)
-  //  -- rdi : the function to call (checked to be a JSFunction)
-  // -----------------------------------
-  StackArgumentsAccessor args(rsp, rax);
-  __ AssertFunction(rdi);
-
-  // ES6 section 9.2.1 [[Call]] ( thisArgument, argumentsList)
-  // Check that the function is not a "classConstructor".
-  Label class_constructor;
-  __ movp(rdx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
-  __ testb(FieldOperand(rdx, SharedFunctionInfo::kFunctionKindByteOffset),
-           Immediate(SharedFunctionInfo::kClassConstructorBitsWithinByte));
-  __ j(not_zero, &class_constructor);
-
-  // ----------- S t a t e -------------
-  //  -- rax : the number of arguments (not including the receiver)
-  //  -- rdx : the shared function info.
-  //  -- rdi : the function to call (checked to be a JSFunction)
-  // -----------------------------------
-
-  // Enter the context of the function; ToObject has to run in the function
-  // context, and we also need to take the global proxy from the function
-  // context in case of conversion.
-  STATIC_ASSERT(SharedFunctionInfo::kNativeByteOffset ==
-                SharedFunctionInfo::kStrictModeByteOffset);
-  __ movp(rsi, FieldOperand(rdi, JSFunction::kContextOffset));
-  // We need to convert the receiver for non-native sloppy mode functions.
-  Label done_convert;
-  __ testb(FieldOperand(rdx, SharedFunctionInfo::kNativeByteOffset),
-           Immediate((1 << SharedFunctionInfo::kNativeBitWithinByte) |
-                     (1 << SharedFunctionInfo::kStrictModeBitWithinByte)));
-  __ j(not_zero, &done_convert);
-  {
-    // ----------- S t a t e -------------
-    //  -- rax : the number of arguments (not including the receiver)
-    //  -- rdx : the shared function info.
-    //  -- rdi : the function to call (checked to be a JSFunction)
-    //  -- rsi : the function context.
-    // -----------------------------------
-
-    if (mode == ConvertReceiverMode::kNullOrUndefined) {
-      // Patch receiver to global proxy.
-      __ LoadGlobalProxy(rcx);
-    } else {
-      Label convert_to_object, convert_receiver;
-      __ movp(rcx, args.GetReceiverOperand());
-      __ JumpIfSmi(rcx, &convert_to_object, Label::kNear);
-      STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE);
-      __ CmpObjectType(rcx, FIRST_JS_RECEIVER_TYPE, rbx);
-      __ j(above_equal, &done_convert);
-      if (mode != ConvertReceiverMode::kNotNullOrUndefined) {
-        Label convert_global_proxy;
-        __ JumpIfRoot(rcx, Heap::kUndefinedValueRootIndex,
-                      &convert_global_proxy, Label::kNear);
-        __ JumpIfNotRoot(rcx, Heap::kNullValueRootIndex, &convert_to_object,
-                         Label::kNear);
-        __ bind(&convert_global_proxy);
-        {
-          // Patch receiver to global proxy.
-          __ LoadGlobalProxy(rcx);
-        }
-        __ jmp(&convert_receiver);
-      }
-      __ bind(&convert_to_object);
-      {
-        // 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);
-        ToObjectStub stub(masm->isolate());
-        __ CallStub(&stub);
-        __ movp(rcx, rax);
-        __ Pop(rdi);
-        __ Pop(rax);
-        __ SmiToInteger32(rax, rax);
-      }
-      __ movp(rdx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
-      __ bind(&convert_receiver);
-    }
-    __ movp(args.GetReceiverOperand(), rcx);
-  }
-  __ bind(&done_convert);
-
-  // ----------- S t a t e -------------
-  //  -- rax : the number of arguments (not including the receiver)
-  //  -- rdx : the shared function info.
-  //  -- rdi : the function to call (checked to be a JSFunction)
-  //  -- rsi : the function context.
-  // -----------------------------------
-
-  if (tail_call_mode == TailCallMode::kAllow) {
-    PrepareForTailCall(masm, rax, rbx, rcx, r8);
-  }
-
-  __ LoadSharedFunctionInfoSpecialField(
-      rbx, rdx, SharedFunctionInfo::kFormalParameterCountOffset);
-  ParameterCount actual(rax);
-  ParameterCount expected(rbx);
-
-  __ InvokeFunctionCode(rdi, no_reg, expected, actual, JUMP_FUNCTION,
-                        CheckDebugStepCallWrapper());
-
-  // The function is a "classConstructor", need to raise an exception.
-  __ bind(&class_constructor);
-  {
-    FrameScope frame(masm, StackFrame::INTERNAL);
-    __ Push(rdi);
-    __ CallRuntime(Runtime::kThrowConstructorNonCallableError);
-  }
-}
-
-
-namespace {
-
-void Generate_PushBoundArguments(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax : the number of arguments (not including the receiver)
-  //  -- rdx : new.target (only in case of [[Construct]])
-  //  -- rdi : target (checked to be a JSBoundFunction)
-  // -----------------------------------
-
-  // Load [[BoundArguments]] into rcx and length of that into rbx.
-  Label no_bound_arguments;
-  __ movp(rcx, FieldOperand(rdi, JSBoundFunction::kBoundArgumentsOffset));
-  __ SmiToInteger32(rbx, FieldOperand(rcx, FixedArray::kLengthOffset));
-  __ testl(rbx, rbx);
-  __ j(zero, &no_bound_arguments);
-  {
-    // ----------- S t a t e -------------
-    //  -- rax : the number of arguments (not including the receiver)
-    //  -- rdx : new.target (only in case of [[Construct]])
-    //  -- rdi : target (checked to be a JSBoundFunction)
-    //  -- rcx : the [[BoundArguments]] (implemented as FixedArray)
-    //  -- rbx : the number of [[BoundArguments]] (checked to be non-zero)
-    // -----------------------------------
-
-    // Reserve stack space for the [[BoundArguments]].
-    {
-      Label done;
-      __ leap(kScratchRegister, Operand(rbx, times_pointer_size, 0));
-      __ subp(rsp, kScratchRegister);
-      // Check the stack for overflow. We are not trying to catch interruptions
-      // (i.e. debug break and preemption) here, so check the "real stack
-      // limit".
-      __ CompareRoot(rsp, Heap::kRealStackLimitRootIndex);
-      __ j(greater, &done, Label::kNear);  // Signed comparison.
-      // Restore the stack pointer.
-      __ leap(rsp, Operand(rsp, rbx, times_pointer_size, 0));
-      {
-        FrameScope scope(masm, StackFrame::MANUAL);
-        __ EnterFrame(StackFrame::INTERNAL);
-        __ CallRuntime(Runtime::kThrowStackOverflow);
-      }
-      __ bind(&done);
-    }
-
-    // Adjust effective number of arguments to include return address.
-    __ incl(rax);
-
-    // Relocate arguments and return address down the stack.
-    {
-      Label loop;
-      __ Set(rcx, 0);
-      __ leap(rbx, Operand(rsp, rbx, times_pointer_size, 0));
-      __ bind(&loop);
-      __ movp(kScratchRegister, Operand(rbx, rcx, times_pointer_size, 0));
-      __ movp(Operand(rsp, rcx, times_pointer_size, 0), kScratchRegister);
-      __ incl(rcx);
-      __ cmpl(rcx, rax);
-      __ j(less, &loop);
-    }
-
-    // Copy [[BoundArguments]] to the stack (below the arguments).
-    {
-      Label loop;
-      __ movp(rcx, FieldOperand(rdi, JSBoundFunction::kBoundArgumentsOffset));
-      __ SmiToInteger32(rbx, FieldOperand(rcx, FixedArray::kLengthOffset));
-      __ bind(&loop);
-      __ decl(rbx);
-      __ movp(kScratchRegister, FieldOperand(rcx, rbx, times_pointer_size,
-                                             FixedArray::kHeaderSize));
-      __ movp(Operand(rsp, rax, times_pointer_size, 0), kScratchRegister);
-      __ leal(rax, Operand(rax, 1));
-      __ j(greater, &loop);
-    }
-
-    // Adjust effective number of arguments (rax contains the number of
-    // arguments from the call plus return address plus the number of
-    // [[BoundArguments]]), so we need to subtract one for the return address.
-    __ decl(rax);
-  }
-  __ bind(&no_bound_arguments);
-}
-
-}  // namespace
-
-
-// static
-void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
-                                              TailCallMode tail_call_mode) {
-  // ----------- S t a t e -------------
-  //  -- rax : the number of arguments (not including the receiver)
-  //  -- rdi : the function to call (checked to be a JSBoundFunction)
-  // -----------------------------------
-  __ AssertBoundFunction(rdi);
-
-  if (tail_call_mode == TailCallMode::kAllow) {
-    PrepareForTailCall(masm, rax, rbx, rcx, r8);
-  }
-
-  // Patch the receiver to [[BoundThis]].
-  StackArgumentsAccessor args(rsp, rax);
-  __ movp(rbx, FieldOperand(rdi, JSBoundFunction::kBoundThisOffset));
-  __ movp(args.GetReceiverOperand(), rbx);
-
-  // Push the [[BoundArguments]] onto the stack.
-  Generate_PushBoundArguments(masm);
-
-  // Call the [[BoundTargetFunction]] via the Call builtin.
-  __ movp(rdi, FieldOperand(rdi, JSBoundFunction::kBoundTargetFunctionOffset));
-  __ Load(rcx,
-          ExternalReference(Builtins::kCall_ReceiverIsAny, masm->isolate()));
-  __ leap(rcx, FieldOperand(rcx, Code::kHeaderSize));
-  __ jmp(rcx);
-}
-
-
-// static
-void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
-                             TailCallMode tail_call_mode) {
-  // ----------- S t a t e -------------
-  //  -- rax : the number of arguments (not including the receiver)
-  //  -- rdi : the target to call (can be any Object)
-  // -----------------------------------
-  StackArgumentsAccessor args(rsp, rax);
-
-  Label non_callable, non_function, non_smi;
-  __ JumpIfSmi(rdi, &non_callable);
-  __ bind(&non_smi);
-  __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rcx);
-  __ j(equal, masm->isolate()->builtins()->CallFunction(mode, tail_call_mode),
-       RelocInfo::CODE_TARGET);
-  __ CmpInstanceType(rcx, JS_BOUND_FUNCTION_TYPE);
-  __ j(equal, masm->isolate()->builtins()->CallBoundFunction(tail_call_mode),
-       RelocInfo::CODE_TARGET);
-
-  // Check if target has a [[Call]] internal method.
-  __ testb(FieldOperand(rcx, Map::kBitFieldOffset),
-           Immediate(1 << Map::kIsCallable));
-  __ j(zero, &non_callable);
-
-  __ CmpInstanceType(rcx, JS_PROXY_TYPE);
-  __ j(not_equal, &non_function);
-
-  // 0. Prepare for tail call if necessary.
-  if (tail_call_mode == TailCallMode::kAllow) {
-    PrepareForTailCall(masm, rax, rbx, rcx, r8);
-  }
-
-  // 1. Runtime fallback for Proxy [[Call]].
-  __ PopReturnAddressTo(kScratchRegister);
-  __ Push(rdi);
-  __ PushReturnAddressFrom(kScratchRegister);
-  // Increase the arguments size to include the pushed function and the
-  // existing receiver on the stack.
-  __ addp(rax, Immediate(2));
-  // Tail-call to the runtime.
-  __ JumpToExternalReference(
-      ExternalReference(Runtime::kJSProxyCall, masm->isolate()));
-
-  // 2. Call to something else, which might have a [[Call]] internal method (if
-  // not we raise an exception).
-  __ bind(&non_function);
-  // Overwrite the original receiver with the (original) target.
-  __ movp(args.GetReceiverOperand(), rdi);
-  // Let the "call_as_function_delegate" take care of the rest.
-  __ LoadNativeContextSlot(Context::CALL_AS_FUNCTION_DELEGATE_INDEX, rdi);
-  __ Jump(masm->isolate()->builtins()->CallFunction(
-              ConvertReceiverMode::kNotNullOrUndefined, tail_call_mode),
-          RelocInfo::CODE_TARGET);
-
-  // 3. Call to something that is not callable.
-  __ bind(&non_callable);
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-    __ Push(rdi);
-    __ CallRuntime(Runtime::kThrowCalledNonCallable);
-  }
-}
-
-
-// static
-void Builtins::Generate_ConstructFunction(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax : the number of arguments (not including the receiver)
-  //  -- rdx : the new target (checked to be a constructor)
-  //  -- rdi : the constructor to call (checked to be a JSFunction)
-  // -----------------------------------
-  __ AssertFunction(rdi);
-
-  // Calling convention for function specific ConstructStubs require
-  // rbx to contain either an AllocationSite or undefined.
-  __ LoadRoot(rbx, Heap::kUndefinedValueRootIndex);
-
-  // Tail call to the function-specific construct stub (still in the caller
-  // context at this point).
-  __ movp(rcx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
-  __ movp(rcx, FieldOperand(rcx, SharedFunctionInfo::kConstructStubOffset));
-  __ leap(rcx, FieldOperand(rcx, Code::kHeaderSize));
-  __ jmp(rcx);
-}
-
-
-// static
-void Builtins::Generate_ConstructBoundFunction(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax : the number of arguments (not including the receiver)
-  //  -- rdx : the new target (checked to be a constructor)
-  //  -- rdi : the constructor to call (checked to be a JSBoundFunction)
-  // -----------------------------------
-  __ AssertBoundFunction(rdi);
-
-  // Push the [[BoundArguments]] onto the stack.
-  Generate_PushBoundArguments(masm);
-
-  // Patch new.target to [[BoundTargetFunction]] if new.target equals target.
-  {
-    Label done;
-    __ cmpp(rdi, rdx);
-    __ j(not_equal, &done, Label::kNear);
-    __ movp(rdx,
-            FieldOperand(rdi, JSBoundFunction::kBoundTargetFunctionOffset));
-    __ bind(&done);
-  }
-
-  // Construct the [[BoundTargetFunction]] via the Construct builtin.
-  __ movp(rdi, FieldOperand(rdi, JSBoundFunction::kBoundTargetFunctionOffset));
-  __ Load(rcx, ExternalReference(Builtins::kConstruct, masm->isolate()));
-  __ leap(rcx, FieldOperand(rcx, Code::kHeaderSize));
-  __ jmp(rcx);
-}
-
-
-// static
-void Builtins::Generate_ConstructProxy(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax : the number of arguments (not including the receiver)
-  //  -- rdi : the constructor to call (checked to be a JSProxy)
-  //  -- rdx : the new target (either the same as the constructor or
-  //           the JSFunction on which new was invoked initially)
-  // -----------------------------------
-
-  // Call into the Runtime for Proxy [[Construct]].
-  __ PopReturnAddressTo(kScratchRegister);
-  __ Push(rdi);
-  __ Push(rdx);
-  __ PushReturnAddressFrom(kScratchRegister);
-  // Include the pushed new_target, constructor and the receiver.
-  __ addp(rax, Immediate(3));
-  __ JumpToExternalReference(
-      ExternalReference(Runtime::kJSProxyConstruct, masm->isolate()));
-}
-
-
-// static
-void Builtins::Generate_Construct(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax : the number of arguments (not including the receiver)
-  //  -- rdx : the new target (either the same as the constructor or
-  //           the JSFunction on which new was invoked initially)
-  //  -- rdi : the constructor to call (can be any Object)
-  // -----------------------------------
-  StackArgumentsAccessor args(rsp, rax);
-
-  // Check if target is a Smi.
-  Label non_constructor;
-  __ JumpIfSmi(rdi, &non_constructor, Label::kNear);
-
-  // Dispatch based on instance type.
-  __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rcx);
-  __ j(equal, masm->isolate()->builtins()->ConstructFunction(),
-       RelocInfo::CODE_TARGET);
-
-  // Check if target has a [[Construct]] internal method.
-  __ testb(FieldOperand(rcx, Map::kBitFieldOffset),
-           Immediate(1 << Map::kIsConstructor));
-  __ j(zero, &non_constructor, Label::kNear);
-
-  // Only dispatch to bound functions after checking whether they are
-  // constructors.
-  __ CmpInstanceType(rcx, JS_BOUND_FUNCTION_TYPE);
-  __ j(equal, masm->isolate()->builtins()->ConstructBoundFunction(),
-       RelocInfo::CODE_TARGET);
-
-  // Only dispatch to proxies after checking whether they are constructors.
-  __ CmpInstanceType(rcx, JS_PROXY_TYPE);
-  __ j(equal, masm->isolate()->builtins()->ConstructProxy(),
-       RelocInfo::CODE_TARGET);
-
-  // Called Construct on an exotic Object with a [[Construct]] internal method.
-  {
-    // Overwrite the original receiver with the (original) target.
-    __ movp(args.GetReceiverOperand(), rdi);
-    // Let the "call_as_constructor_delegate" take care of the rest.
-    __ LoadNativeContextSlot(Context::CALL_AS_CONSTRUCTOR_DELEGATE_INDEX, rdi);
-    __ Jump(masm->isolate()->builtins()->CallFunction(),
-            RelocInfo::CODE_TARGET);
-  }
-
-  // Called Construct on an Object that doesn't have a [[Construct]] internal
-  // method.
-  __ bind(&non_constructor);
-  __ Jump(masm->isolate()->builtins()->ConstructedNonConstructable(),
-          RelocInfo::CODE_TARGET);
-}
-
-
-static void CompatibleReceiverCheck(MacroAssembler* masm, Register receiver,
-                                    Register function_template_info,
-                                    Register scratch0, Register scratch1,
-                                    Register scratch2,
-                                    Label* receiver_check_failed) {
-  Register signature = scratch0;
-  Register map = scratch1;
-  Register constructor = scratch2;
-
-  // If there is no signature, return the holder.
-  __ movp(signature, FieldOperand(function_template_info,
-                                  FunctionTemplateInfo::kSignatureOffset));
-  __ CompareRoot(signature, Heap::kUndefinedValueRootIndex);
-  Label receiver_check_passed;
-  __ j(equal, &receiver_check_passed, Label::kNear);
-
-  // Walk the prototype chain.
-  __ movp(map, FieldOperand(receiver, HeapObject::kMapOffset));
-  Label prototype_loop_start;
-  __ bind(&prototype_loop_start);
-
-  // Get the constructor, if any.
-  __ GetMapConstructor(constructor, map, kScratchRegister);
-  __ CmpInstanceType(kScratchRegister, JS_FUNCTION_TYPE);
-  Label next_prototype;
-  __ j(not_equal, &next_prototype, Label::kNear);
-
-  // Get the constructor's signature.
-  Register type = constructor;
-  __ movp(type,
-          FieldOperand(constructor, JSFunction::kSharedFunctionInfoOffset));
-  __ movp(type, FieldOperand(type, SharedFunctionInfo::kFunctionDataOffset));
-
-  // Loop through the chain of inheriting function templates.
-  Label function_template_loop;
-  __ bind(&function_template_loop);
-
-  // If the signatures match, we have a compatible receiver.
-  __ cmpp(signature, type);
-  __ j(equal, &receiver_check_passed, Label::kNear);
-
-  // If the current type is not a FunctionTemplateInfo, load the next prototype
-  // in the chain.
-  __ JumpIfSmi(type, &next_prototype, Label::kNear);
-  __ CmpObjectType(type, FUNCTION_TEMPLATE_INFO_TYPE, kScratchRegister);
-  __ j(not_equal, &next_prototype, Label::kNear);
-
-  // Otherwise load the parent function template and iterate.
-  __ movp(type,
-          FieldOperand(type, FunctionTemplateInfo::kParentTemplateOffset));
-  __ jmp(&function_template_loop, Label::kNear);
-
-  // Load the next prototype.
-  __ bind(&next_prototype);
-  __ testq(FieldOperand(map, Map::kBitField3Offset),
-           Immediate(Map::HasHiddenPrototype::kMask));
-  __ j(zero, receiver_check_failed);
-  __ movp(receiver, FieldOperand(map, Map::kPrototypeOffset));
-  __ movp(map, FieldOperand(receiver, HeapObject::kMapOffset));
-  // Iterate.
-  __ jmp(&prototype_loop_start, Label::kNear);
-
-  __ bind(&receiver_check_passed);
-}
-
-
-void Builtins::Generate_HandleFastApiCall(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rax                : number of arguments (not including the receiver)
-  //  -- rdi                : callee
-  //  -- rsi                : context
-  //  -- rsp[0]             : return address
-  //  -- rsp[8]             : last argument
-  //  -- ...
-  //  -- rsp[rax * 8]       : first argument
-  //  -- rsp[(rax + 1) * 8] : receiver
-  // -----------------------------------
-
-  StackArgumentsAccessor args(rsp, rax);
-
-  // Load the FunctionTemplateInfo.
-  __ movp(rbx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
-  __ movp(rbx, FieldOperand(rbx, SharedFunctionInfo::kFunctionDataOffset));
-
-  // Do the compatible receiver check.
-  Label receiver_check_failed;
-  __ movp(rcx, args.GetReceiverOperand());
-  CompatibleReceiverCheck(masm, rcx, rbx, rdx, r8, r9, &receiver_check_failed);
-
-  // Get the callback offset from the FunctionTemplateInfo, and jump to the
-  // beginning of the code.
-  __ movp(rdx, FieldOperand(rbx, FunctionTemplateInfo::kCallCodeOffset));
-  __ movp(rdx, FieldOperand(rdx, CallHandlerInfo::kFastHandlerOffset));
-  __ addp(rdx, Immediate(Code::kHeaderSize - kHeapObjectTag));
-  __ jmp(rdx);
-
-  // Compatible receiver check failed: pop return address, arguments and
-  // receiver and throw an Illegal Invocation exception.
-  __ bind(&receiver_check_failed);
-  __ PopReturnAddressTo(rbx);
-  __ leap(rax, Operand(rax, times_pointer_size, 1 * kPointerSize));
-  __ addp(rsp, rax);
-  __ PushReturnAddressFrom(rbx);
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-    __ TailCallRuntime(Runtime::kThrowIllegalInvocation);
-  }
-}
-
-
-void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) {
-  // Lookup the function in the JavaScript frame.
-  __ movp(rax, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset));
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-    // Pass function as argument.
-    __ Push(rax);
-    __ CallRuntime(Runtime::kCompileForOnStackReplacement);
-  }
-
-  Label skip;
-  // If the code object is null, just return to the unoptimized code.
-  __ cmpp(rax, Immediate(0));
-  __ j(not_equal, &skip, Label::kNear);
-  __ ret(0);
-
-  __ bind(&skip);
-
-  // Load deoptimization data from the code object.
-  __ movp(rbx, Operand(rax, Code::kDeoptimizationDataOffset - kHeapObjectTag));
-
-  // Load the OSR entrypoint offset from the deoptimization data.
-  __ SmiToInteger32(rbx, Operand(rbx, FixedArray::OffsetOfElementAt(
-      DeoptimizationInputData::kOsrPcOffsetIndex) - kHeapObjectTag));
-
-  // Compute the target address = code_obj + header_size + osr_offset
-  __ leap(rax, Operand(rax, rbx, times_1, Code::kHeaderSize - kHeapObjectTag));
-
-  // Overwrite the return address on the stack.
-  __ movq(StackOperandForReturnAddress(0), rax);
-
-  // And "return" to the OSR entry point of the function.
-  __ ret(0);
-}
-
-
-#undef __
-
-}  // namespace internal
-}  // namespace v8
-
-#endif  // V8_TARGET_ARCH_X64