[builtins] Port parameter and argument-related code stubs to CSA

src/x64/code-stubs-x64.cc

Index: src/x64/code-stubs-x64.cc
diff --git a/src/x64/code-stubs-x64.cc b/src/x64/code-stubs-x64.cc
index 3e5ef4a108e8bab3e92d9e8af66805616bc5bdcc..00e23dd8352187bda9d6ab80891d4588d7ab1c67 100644
--- a/src/x64/code-stubs-x64.cc
+++ b/src/x64/code-stubs-x64.cc
@@ -3022,531 +3022,6 @@ void InternalArrayConstructorStub::Generate(MacroAssembler* masm) {
   GenerateCase(masm, FAST_ELEMENTS);
 }
 
-void FastNewRestParameterStub::Generate(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rdi    : function
-  //  -- rsi    : context
-  //  -- rbp    : frame pointer
-  //  -- rsp[0] : return address
-  // -----------------------------------
-  __ AssertFunction(rdi);
-
-  // Make rdx point to the JavaScript frame.
-  __ movp(rdx, rbp);
-  if (skip_stub_frame()) {
-    // For Ignition we need to skip the handler/stub frame to reach the
-    // JavaScript frame for the function.
-    __ movp(rdx, Operand(rdx, StandardFrameConstants::kCallerFPOffset));
-  }
-  if (FLAG_debug_code) {
-    Label ok;
-    __ cmpp(rdi, Operand(rdx, StandardFrameConstants::kFunctionOffset));
-    __ j(equal, &ok);
-    __ Abort(kInvalidFrameForFastNewRestArgumentsStub);
-    __ bind(&ok);
-  }
-
-  // Check if we have rest parameters (only possible if we have an
-  // arguments adaptor frame below the function frame).
-  Label no_rest_parameters;
-  __ movp(rbx, Operand(rdx, StandardFrameConstants::kCallerFPOffset));
-  __ Cmp(Operand(rbx, CommonFrameConstants::kContextOrFrameTypeOffset),
-         Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
-  __ j(not_equal, &no_rest_parameters, Label::kNear);
-
-  // Check if the arguments adaptor frame contains more arguments than
-  // specified by the function's internal formal parameter count.
-  Label rest_parameters;
-  __ movp(rcx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
-  __ LoadSharedFunctionInfoSpecialField(
-      rcx, rcx, SharedFunctionInfo::kFormalParameterCountOffset);
-  __ SmiToInteger32(
-      rax, Operand(rbx, ArgumentsAdaptorFrameConstants::kLengthOffset));
-  __ subl(rax, rcx);
-  __ j(greater, &rest_parameters);
-
-  // Return an empty rest parameter array.
-  __ bind(&no_rest_parameters);
-  {
-    // ----------- S t a t e -------------
-    //  -- rsi    : context
-    //  -- rsp[0] : return address
-    // -----------------------------------
-
-    // Allocate an empty rest parameter array.
-    Label allocate, done_allocate;
-    __ Allocate(JSArray::kSize, rax, rdx, rcx, &allocate, NO_ALLOCATION_FLAGS);
-    __ bind(&done_allocate);
-
-    // Setup the rest parameter array in rax.
-    __ LoadNativeContextSlot(Context::JS_ARRAY_FAST_ELEMENTS_MAP_INDEX, rcx);
-    __ movp(FieldOperand(rax, JSArray::kMapOffset), rcx);
-    __ LoadRoot(rcx, Heap::kEmptyFixedArrayRootIndex);
-    __ movp(FieldOperand(rax, JSArray::kPropertiesOffset), rcx);
-    __ movp(FieldOperand(rax, JSArray::kElementsOffset), rcx);
-    __ movp(FieldOperand(rax, JSArray::kLengthOffset), Immediate(0));
-    STATIC_ASSERT(JSArray::kSize == 4 * kPointerSize);
-    __ Ret();
-
-    // Fall back to %AllocateInNewSpace.
-    __ bind(&allocate);
-    {
-      FrameScope scope(masm, StackFrame::INTERNAL);
-      __ Push(Smi::FromInt(JSArray::kSize));
-      __ CallRuntime(Runtime::kAllocateInNewSpace);
-    }
-    __ jmp(&done_allocate);
-  }
-
-  __ bind(&rest_parameters);
-  {
-    // Compute the pointer to the first rest parameter (skippping the receiver).
-    __ leap(rbx, Operand(rbx, rax, times_pointer_size,
-                         StandardFrameConstants::kCallerSPOffset -
-                             1 * kPointerSize));
-
-    // ----------- S t a t e -------------
-    //  -- rdi    : function
-    //  -- rsi    : context
-    //  -- rax    : number of rest parameters
-    //  -- rbx    : pointer to first rest parameters
-    //  -- rsp[0] : return address
-    // -----------------------------------
-
-    // Allocate space for the rest parameter array plus the backing store.
-    Label allocate, done_allocate;
-    __ leal(rcx, Operand(rax, times_pointer_size,
-                         JSArray::kSize + FixedArray::kHeaderSize));
-    __ Allocate(rcx, rdx, r8, no_reg, &allocate, NO_ALLOCATION_FLAGS);
-    __ bind(&done_allocate);
-
-    // Compute the arguments.length in rdi.
-    __ Integer32ToSmi(rdi, rax);
-
-    // Setup the elements array in rdx.
-    __ LoadRoot(rcx, Heap::kFixedArrayMapRootIndex);
-    __ movp(FieldOperand(rdx, FixedArray::kMapOffset), rcx);
-    __ movp(FieldOperand(rdx, FixedArray::kLengthOffset), rdi);
-    {
-      Label loop, done_loop;
-      __ Set(rcx, 0);
-      __ bind(&loop);
-      __ cmpl(rcx, rax);
-      __ j(equal, &done_loop, Label::kNear);
-      __ movp(kScratchRegister, Operand(rbx, 0 * kPointerSize));
-      __ movp(
-          FieldOperand(rdx, rcx, times_pointer_size, FixedArray::kHeaderSize),
-          kScratchRegister);
-      __ subp(rbx, Immediate(1 * kPointerSize));
-      __ addl(rcx, Immediate(1));
-      __ jmp(&loop);
-      __ bind(&done_loop);
-    }
-
-    // Setup the rest parameter array in rax.
-    __ leap(rax,
-            Operand(rdx, rax, times_pointer_size, FixedArray::kHeaderSize));
-    __ LoadNativeContextSlot(Context::JS_ARRAY_FAST_ELEMENTS_MAP_INDEX, rcx);
-    __ movp(FieldOperand(rax, JSArray::kMapOffset), rcx);
-    __ LoadRoot(rcx, Heap::kEmptyFixedArrayRootIndex);
-    __ movp(FieldOperand(rax, JSArray::kPropertiesOffset), rcx);
-    __ movp(FieldOperand(rax, JSArray::kElementsOffset), rdx);
-    __ movp(FieldOperand(rax, JSArray::kLengthOffset), rdi);
-    STATIC_ASSERT(JSArray::kSize == 4 * kPointerSize);
-    __ Ret();
-
-    // Fall back to %AllocateInNewSpace (if not too big).
-    Label too_big_for_new_space;
-    __ bind(&allocate);
-    __ cmpl(rcx, Immediate(kMaxRegularHeapObjectSize));
-    __ j(greater, &too_big_for_new_space);
-    {
-      FrameScope scope(masm, StackFrame::INTERNAL);
-      __ Integer32ToSmi(rax, rax);
-      __ Integer32ToSmi(rcx, rcx);
-      __ Push(rax);
-      __ Push(rbx);
-      __ Push(rcx);
-      __ CallRuntime(Runtime::kAllocateInNewSpace);
-      __ movp(rdx, rax);
-      __ Pop(rbx);
-      __ Pop(rax);
-      __ SmiToInteger32(rax, rax);
-    }
-    __ jmp(&done_allocate);
-
-    // Fall back to %NewRestParameter.
-    __ bind(&too_big_for_new_space);
-    __ PopReturnAddressTo(kScratchRegister);
-    __ Push(rdi);
-    __ PushReturnAddressFrom(kScratchRegister);
-    __ TailCallRuntime(Runtime::kNewRestParameter);
-  }
-}
-
-
-void FastNewSloppyArgumentsStub::Generate(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rdi    : function
-  //  -- rsi    : context
-  //  -- rbp    : frame pointer
-  //  -- rsp[0] : return address
-  // -----------------------------------
-  __ AssertFunction(rdi);
-
-  // Make r9 point to the JavaScript frame.
-  __ movp(r9, rbp);
-  if (skip_stub_frame()) {
-    // For Ignition we need to skip the handler/stub frame to reach the
-    // JavaScript frame for the function.
-    __ movp(r9, Operand(r9, StandardFrameConstants::kCallerFPOffset));
-  }
-  if (FLAG_debug_code) {
-    Label ok;
-    __ cmpp(rdi, Operand(r9, StandardFrameConstants::kFunctionOffset));
-    __ j(equal, &ok);
-    __ Abort(kInvalidFrameForFastNewRestArgumentsStub);
-    __ bind(&ok);
-  }
-
-  // TODO(bmeurer): Cleanup to match the FastNewStrictArgumentsStub.
-  __ movp(rcx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
-  __ LoadSharedFunctionInfoSpecialField(
-      rcx, rcx, SharedFunctionInfo::kFormalParameterCountOffset);
-  __ leap(rdx, Operand(r9, rcx, times_pointer_size,
-                       StandardFrameConstants::kCallerSPOffset));
-  __ Integer32ToSmi(rcx, rcx);
-
-  // rcx : number of parameters (tagged)
-  // rdx : parameters pointer
-  // rdi : function
-  // rsp[0] : return address
-  // r9  : JavaScript frame pointer.
-  // Registers used over the whole function:
-  //  rbx: the mapped parameter count (untagged)
-  //  rax: the allocated object (tagged).
-  Factory* factory = isolate()->factory();
-
-  __ SmiToInteger64(rbx, rcx);
-  // rbx = parameter count (untagged)
-
-  // Check if the calling frame is an arguments adaptor frame.
-  Label adaptor_frame, try_allocate, runtime;
-  __ movp(rax, Operand(r9, StandardFrameConstants::kCallerFPOffset));
-  __ movp(r8, Operand(rax, CommonFrameConstants::kContextOrFrameTypeOffset));
-  __ Cmp(r8, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
-  __ j(equal, &adaptor_frame);
-
-  // No adaptor, parameter count = argument count.
-  __ movp(r11, rbx);
-  __ jmp(&try_allocate, Label::kNear);
-
-  // We have an adaptor frame. Patch the parameters pointer.
-  __ bind(&adaptor_frame);
-  __ SmiToInteger64(
-      r11, Operand(rax, ArgumentsAdaptorFrameConstants::kLengthOffset));
-  __ leap(rdx, Operand(rax, r11, times_pointer_size,
-                       StandardFrameConstants::kCallerSPOffset));
-
-  // rbx = parameter count (untagged)
-  // r11 = argument count (untagged)
-  // Compute the mapped parameter count = min(rbx, r11) in rbx.
-  __ cmpp(rbx, r11);
-  __ j(less_equal, &try_allocate, Label::kNear);
-  __ movp(rbx, r11);
-
-  __ bind(&try_allocate);
-
-  // Compute the sizes of backing store, parameter map, and arguments object.
-  // 1. Parameter map, has 2 extra words containing context and backing store.
-  const int kParameterMapHeaderSize =
-      FixedArray::kHeaderSize + 2 * kPointerSize;
-  Label no_parameter_map;
-  __ xorp(r8, r8);
-  __ testp(rbx, rbx);
-  __ j(zero, &no_parameter_map, Label::kNear);
-  __ leap(r8, Operand(rbx, times_pointer_size, kParameterMapHeaderSize));
-  __ bind(&no_parameter_map);
-
-  // 2. Backing store.
-  __ leap(r8, Operand(r8, r11, times_pointer_size, FixedArray::kHeaderSize));
-
-  // 3. Arguments object.
-  __ addp(r8, Immediate(JSSloppyArgumentsObject::kSize));
-
-  // Do the allocation of all three objects in one go.
-  __ Allocate(r8, rax, r9, no_reg, &runtime, NO_ALLOCATION_FLAGS);
-
-  // rax = address of new object(s) (tagged)
-  // r11 = argument count (untagged)
-  // Get the arguments map from the current native context into r9.
-  Label has_mapped_parameters, instantiate;
-  __ movp(r9, NativeContextOperand());
-  __ testp(rbx, rbx);
-  __ j(not_zero, &has_mapped_parameters, Label::kNear);
-
-  const int kIndex = Context::SLOPPY_ARGUMENTS_MAP_INDEX;
-  __ movp(r9, Operand(r9, Context::SlotOffset(kIndex)));
-  __ jmp(&instantiate, Label::kNear);
-
-  const int kAliasedIndex = Context::FAST_ALIASED_ARGUMENTS_MAP_INDEX;
-  __ bind(&has_mapped_parameters);
-  __ movp(r9, Operand(r9, Context::SlotOffset(kAliasedIndex)));
-  __ bind(&instantiate);
-
-  // rax = address of new object (tagged)
-  // rbx = mapped parameter count (untagged)
-  // r11 = argument count (untagged)
-  // r9 = address of arguments map (tagged)
-  __ movp(FieldOperand(rax, JSObject::kMapOffset), r9);
-  __ LoadRoot(kScratchRegister, Heap::kEmptyFixedArrayRootIndex);
-  __ movp(FieldOperand(rax, JSObject::kPropertiesOffset), kScratchRegister);
-  __ movp(FieldOperand(rax, JSObject::kElementsOffset), kScratchRegister);
-
-  // Set up the callee in-object property.
-  __ AssertNotSmi(rdi);
-  __ movp(FieldOperand(rax, JSSloppyArgumentsObject::kCalleeOffset), rdi);
-
-  // Use the length (smi tagged) and set that as an in-object property too.
-  // Note: r11 is tagged from here on.
-  __ Integer32ToSmi(r11, r11);
-  __ movp(FieldOperand(rax, JSSloppyArgumentsObject::kLengthOffset), r11);
-
-  // Set up the elements pointer in the allocated arguments object.
-  // If we allocated a parameter map, rdi will point there, otherwise to the
-  // backing store.
-  __ leap(rdi, Operand(rax, JSSloppyArgumentsObject::kSize));
-  __ movp(FieldOperand(rax, JSObject::kElementsOffset), rdi);
-
-  // rax = address of new object (tagged)
-  // rbx = mapped parameter count (untagged)
-  // r11 = argument count (tagged)
-  // rdi = address of parameter map or backing store (tagged)
-
-  // Initialize parameter map. If there are no mapped arguments, we're done.
-  Label skip_parameter_map;
-  __ testp(rbx, rbx);
-  __ j(zero, &skip_parameter_map);
-
-  __ LoadRoot(kScratchRegister, Heap::kSloppyArgumentsElementsMapRootIndex);
-  // rbx contains the untagged argument count. Add 2 and tag to write.
-  __ movp(FieldOperand(rdi, FixedArray::kMapOffset), kScratchRegister);
-  __ Integer64PlusConstantToSmi(r9, rbx, 2);
-  __ movp(FieldOperand(rdi, FixedArray::kLengthOffset), r9);
-  __ movp(FieldOperand(rdi, FixedArray::kHeaderSize + 0 * kPointerSize), rsi);
-  __ leap(r9, Operand(rdi, rbx, times_pointer_size, kParameterMapHeaderSize));
-  __ movp(FieldOperand(rdi, FixedArray::kHeaderSize + 1 * kPointerSize), r9);
-
-  // Copy the parameter slots and the holes in the arguments.
-  // We need to fill in mapped_parameter_count slots. They index the context,
-  // where parameters are stored in reverse order, at
-  //   MIN_CONTEXT_SLOTS .. MIN_CONTEXT_SLOTS+parameter_count-1
-  // The mapped parameter thus need to get indices
-  //   MIN_CONTEXT_SLOTS+parameter_count-1 ..
-  //       MIN_CONTEXT_SLOTS+parameter_count-mapped_parameter_count
-  // We loop from right to left.
-  Label parameters_loop, parameters_test;
-
-  // Load tagged parameter count into r9.
-  __ Integer32ToSmi(r9, rbx);
-  __ Move(r8, Smi::FromInt(Context::MIN_CONTEXT_SLOTS));
-  __ addp(r8, rcx);
-  __ subp(r8, r9);
-  __ movp(rcx, rdi);
-  __ leap(rdi, Operand(rdi, rbx, times_pointer_size, kParameterMapHeaderSize));
-  __ SmiToInteger64(r9, r9);
-  // r9 = loop variable (untagged)
-  // r8 = mapping index (tagged)
-  // rcx = address of parameter map (tagged)
-  // rdi = address of backing store (tagged)
-  __ jmp(&parameters_test, Label::kNear);
-
-  __ bind(&parameters_loop);
-  __ subp(r9, Immediate(1));
-  __ LoadRoot(kScratchRegister, Heap::kTheHoleValueRootIndex);
-  __ movp(FieldOperand(rcx, r9, times_pointer_size, kParameterMapHeaderSize),
-          r8);
-  __ movp(FieldOperand(rdi, r9, times_pointer_size, FixedArray::kHeaderSize),
-          kScratchRegister);
-  __ SmiAddConstant(r8, r8, Smi::FromInt(1));
-  __ bind(&parameters_test);
-  __ testp(r9, r9);
-  __ j(not_zero, &parameters_loop, Label::kNear);
-
-  __ bind(&skip_parameter_map);
-
-  // r11 = argument count (tagged)
-  // rdi = address of backing store (tagged)
-  // Copy arguments header and remaining slots (if there are any).
-  __ Move(FieldOperand(rdi, FixedArray::kMapOffset),
-          factory->fixed_array_map());
-  __ movp(FieldOperand(rdi, FixedArray::kLengthOffset), r11);
-
-  Label arguments_loop, arguments_test;
-  __ movp(r8, rbx);
-  // Untag r11 for the loop below.
-  __ SmiToInteger64(r11, r11);
-  __ leap(kScratchRegister, Operand(r8, times_pointer_size, 0));
-  __ subp(rdx, kScratchRegister);
-  __ jmp(&arguments_test, Label::kNear);
-
-  __ bind(&arguments_loop);
-  __ subp(rdx, Immediate(kPointerSize));
-  __ movp(r9, Operand(rdx, 0));
-  __ movp(FieldOperand(rdi, r8,
-                       times_pointer_size,
-                       FixedArray::kHeaderSize),
-          r9);
-  __ addp(r8, Immediate(1));
-
-  __ bind(&arguments_test);
-  __ cmpp(r8, r11);
-  __ j(less, &arguments_loop, Label::kNear);
-
-  // Return.
-  __ ret(0);
-
-  // Do the runtime call to allocate the arguments object.
-  // r11 = argument count (untagged)
-  __ bind(&runtime);
-  __ Integer32ToSmi(r11, r11);
-  __ PopReturnAddressTo(rax);
-  __ Push(rdi);  // Push function.
-  __ Push(rdx);  // Push parameters pointer.
-  __ Push(r11);  // Push parameter count.
-  __ PushReturnAddressFrom(rax);
-  __ TailCallRuntime(Runtime::kNewSloppyArguments);
-}
-
-
-void FastNewStrictArgumentsStub::Generate(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- rdi    : function
-  //  -- rsi    : context
-  //  -- rbp    : frame pointer
-  //  -- rsp[0] : return address
-  // -----------------------------------
-  __ AssertFunction(rdi);
-
-  // Make rdx point to the JavaScript frame.
-  __ movp(rdx, rbp);
-  if (skip_stub_frame()) {
-    // For Ignition we need to skip the handler/stub frame to reach the
-    // JavaScript frame for the function.
-    __ movp(rdx, Operand(rdx, StandardFrameConstants::kCallerFPOffset));
-  }
-  if (FLAG_debug_code) {
-    Label ok;
-    __ cmpp(rdi, Operand(rdx, StandardFrameConstants::kFunctionOffset));
-    __ j(equal, &ok);
-    __ Abort(kInvalidFrameForFastNewRestArgumentsStub);
-    __ bind(&ok);
-  }
-
-  // Check if we have an arguments adaptor frame below the function frame.
-  Label arguments_adaptor, arguments_done;
-  __ movp(rbx, Operand(rdx, StandardFrameConstants::kCallerFPOffset));
-  __ Cmp(Operand(rbx, CommonFrameConstants::kContextOrFrameTypeOffset),
-         Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
-  __ j(equal, &arguments_adaptor, Label::kNear);
-  {
-    __ movp(rax, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
-    __ LoadSharedFunctionInfoSpecialField(
-        rax, rax, SharedFunctionInfo::kFormalParameterCountOffset);
-    __ leap(rbx, Operand(rdx, rax, times_pointer_size,
-                         StandardFrameConstants::kCallerSPOffset -
-                             1 * kPointerSize));
-  }
-  __ jmp(&arguments_done, Label::kNear);
-  __ bind(&arguments_adaptor);
-  {
-    __ SmiToInteger32(
-        rax, Operand(rbx, ArgumentsAdaptorFrameConstants::kLengthOffset));
-    __ leap(rbx, Operand(rbx, rax, times_pointer_size,
-                         StandardFrameConstants::kCallerSPOffset -
-                             1 * kPointerSize));
-  }
-  __ bind(&arguments_done);
-
-  // ----------- S t a t e -------------
-  //  -- rax    : number of arguments
-  //  -- rbx    : pointer to the first argument
-  //  -- rdi    : function
-  //  -- rsi    : context
-  //  -- rsp[0] : return address
-  // -----------------------------------
-
-  // Allocate space for the strict arguments object plus the backing store.
-  Label allocate, done_allocate;
-  __ leal(rcx, Operand(rax, times_pointer_size, JSStrictArgumentsObject::kSize +
-                                                    FixedArray::kHeaderSize));
-  __ Allocate(rcx, rdx, r8, no_reg, &allocate, NO_ALLOCATION_FLAGS);
-  __ bind(&done_allocate);
-
-  // Compute the arguments.length in rdi.
-  __ Integer32ToSmi(rdi, rax);
-
-  // Setup the elements array in rdx.
-  __ LoadRoot(rcx, Heap::kFixedArrayMapRootIndex);
-  __ movp(FieldOperand(rdx, FixedArray::kMapOffset), rcx);
-  __ movp(FieldOperand(rdx, FixedArray::kLengthOffset), rdi);
-  {
-    Label loop, done_loop;
-    __ Set(rcx, 0);
-    __ bind(&loop);
-    __ cmpl(rcx, rax);
-    __ j(equal, &done_loop, Label::kNear);
-    __ movp(kScratchRegister, Operand(rbx, 0 * kPointerSize));
-    __ movp(
-        FieldOperand(rdx, rcx, times_pointer_size, FixedArray::kHeaderSize),
-        kScratchRegister);
-    __ subp(rbx, Immediate(1 * kPointerSize));
-    __ addl(rcx, Immediate(1));
-    __ jmp(&loop);
-    __ bind(&done_loop);
-  }
-
-  // Setup the strict arguments object in rax.
-  __ leap(rax,
-          Operand(rdx, rax, times_pointer_size, FixedArray::kHeaderSize));
-  __ LoadNativeContextSlot(Context::STRICT_ARGUMENTS_MAP_INDEX, rcx);
-  __ movp(FieldOperand(rax, JSStrictArgumentsObject::kMapOffset), rcx);
-  __ LoadRoot(rcx, Heap::kEmptyFixedArrayRootIndex);
-  __ movp(FieldOperand(rax, JSStrictArgumentsObject::kPropertiesOffset), rcx);
-  __ movp(FieldOperand(rax, JSStrictArgumentsObject::kElementsOffset), rdx);
-  __ movp(FieldOperand(rax, JSStrictArgumentsObject::kLengthOffset), rdi);
-  STATIC_ASSERT(JSStrictArgumentsObject::kSize == 4 * kPointerSize);
-  __ Ret();
-
-  // Fall back to %AllocateInNewSpace (if not too big).
-  Label too_big_for_new_space;
-  __ bind(&allocate);
-  __ cmpl(rcx, Immediate(kMaxRegularHeapObjectSize));
-  __ j(greater, &too_big_for_new_space);
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-    __ Integer32ToSmi(rax, rax);
-    __ Integer32ToSmi(rcx, rcx);
-    __ Push(rax);
-    __ Push(rbx);
-    __ Push(rcx);
-    __ CallRuntime(Runtime::kAllocateInNewSpace);
-    __ movp(rdx, rax);
-    __ Pop(rbx);
-    __ Pop(rax);
-    __ SmiToInteger32(rax, rax);
-  }
-  __ jmp(&done_allocate);
-
-  // Fall back to %NewStrictArguments.
-  __ bind(&too_big_for_new_space);
-  __ PopReturnAddressTo(kScratchRegister);
-  __ Push(rdi);
-  __ PushReturnAddressFrom(kScratchRegister);
-  __ TailCallRuntime(Runtime::kNewStrictArguments);
-}
-
-
 static int Offset(ExternalReference ref0, ExternalReference ref1) {
   int64_t offset = (ref0.address() - ref1.address());
   // Check that fits into int.
@@ -3554,7 +3029,6 @@ static int Offset(ExternalReference ref0, ExternalReference ref1) {
   return static_cast<int>(offset);
 }
 
-
 // Prepares stack to put arguments (aligns and so on).  WIN64 calling
 // convention requires to put the pointer to the return value slot into
 // rcx (rcx must be preserverd until CallApiFunctionAndReturn).  Saves