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

src/s390/builtins-s390.cc

-// Copyright 2014 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_S390
-
-#include "src/codegen.h"
-#include "src/debug/debug.h"
-#include "src/deoptimizer.h"
-#include "src/full-codegen/full-codegen.h"
-#include "src/runtime/runtime.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 -------------
-  //  -- r2                 : number of arguments excluding receiver
-  //  -- r3                 : target
-  //  -- r5                 : new.target
-  //  -- sp[0]              : last argument
-  //  -- ...
-  //  -- sp[4 * (argc - 1)] : first argument
-  //  -- sp[4 * argc]       : receiver
-  // -----------------------------------
-  __ AssertFunction(r3);
-
-  // 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).
-  __ LoadP(cp, FieldMemOperand(r3, JSFunction::kContextOffset));
-
-  // JumpToExternalReference expects r2 to contain the number of arguments
-  // including the receiver and the extra arguments.
-  const int num_extra_args = 3;
-  __ AddP(r2, r2, Operand(num_extra_args + 1));
-
-  // Insert extra arguments.
-  __ SmiTag(r2);
-  __ Push(r2, r3, r5);
-  __ SmiUntag(r2);
-
-  __ JumpToExternalReference(ExternalReference(id, masm->isolate()),
-                             exit_frame_type == BUILTIN_EXIT);
-}
-
-// Load the built-in InternalArray function from the current context.
-static void GenerateLoadInternalArrayFunction(MacroAssembler* masm,
-                                              Register result) {
-  // Load the InternalArray function from the current native context.
-  __ LoadNativeContextSlot(Context::INTERNAL_ARRAY_FUNCTION_INDEX, result);
-}
-
-// Load the built-in Array function from the current context.
-static void GenerateLoadArrayFunction(MacroAssembler* masm, Register result) {
-  // Load the Array function from the current native context.
-  __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, result);
-}
-
-void Builtins::Generate_InternalArrayCode(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2     : number of arguments
-  //  -- lr     : return address
-  //  -- sp[...]: constructor arguments
-  // -----------------------------------
-  Label generic_array_code, one_or_more_arguments, two_or_more_arguments;
-
-  // Get the InternalArray function.
-  GenerateLoadInternalArrayFunction(masm, r3);
-
-  if (FLAG_debug_code) {
-    // Initial map for the builtin InternalArray functions should be maps.
-    __ LoadP(r4, FieldMemOperand(r3, JSFunction::kPrototypeOrInitialMapOffset));
-    __ TestIfSmi(r4);
-    __ Assert(ne, kUnexpectedInitialMapForInternalArrayFunction, cr0);
-    __ CompareObjectType(r4, r5, r6, MAP_TYPE);
-    __ Assert(eq, 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 -------------
-  //  -- r2     : number of arguments
-  //  -- lr     : return address
-  //  -- sp[...]: constructor arguments
-  // -----------------------------------
-  Label generic_array_code, one_or_more_arguments, two_or_more_arguments;
-
-  // Get the Array function.
-  GenerateLoadArrayFunction(masm, r3);
-
-  if (FLAG_debug_code) {
-    // Initial map for the builtin Array functions should be maps.
-    __ LoadP(r4, FieldMemOperand(r3, JSFunction::kPrototypeOrInitialMapOffset));
-    __ TestIfSmi(r4);
-    __ Assert(ne, kUnexpectedInitialMapForArrayFunction, cr0);
-    __ CompareObjectType(r4, r5, r6, MAP_TYPE);
-    __ Assert(eq, kUnexpectedInitialMapForArrayFunction);
-  }
-
-  __ LoadRR(r5, r3);
-  // Run the native code for the Array function called as a normal function.
-  // tail call a stub
-  __ LoadRoot(r4, Heap::kUndefinedValueRootIndex);
-  ArrayConstructorStub stub(masm->isolate());
-  __ TailCallStub(&stub);
-}
-
-// static
-void Builtins::Generate_MathMaxMin(MacroAssembler* masm, MathMaxMinKind kind) {
-  // ----------- S t a t e -------------
-  //  -- r2                     : number of arguments
-  //  -- r3                     : function
-  //  -- cp                     : context
-  //  -- lr                     : return address
-  //  -- sp[(argc - n - 1) * 4] : arg[n] (zero based)
-  //  -- sp[argc * 4]           : receiver
-  // -----------------------------------
-  Condition const cond_done = (kind == MathMaxMinKind::kMin) ? lt : gt;
-  Heap::RootListIndex const root_index =
-      (kind == MathMaxMinKind::kMin) ? Heap::kInfinityValueRootIndex
-                                     : Heap::kMinusInfinityValueRootIndex;
-  DoubleRegister const reg = (kind == MathMaxMinKind::kMin) ? d2 : d1;
-
-  // Load the accumulator with the default return value (either -Infinity or
-  // +Infinity), with the tagged value in r7 and the double value in d1.
-  __ LoadRoot(r7, root_index);
-  __ LoadDouble(d1, FieldMemOperand(r7, HeapNumber::kValueOffset));
-
-  // Setup state for loop
-  // r4: address of arg[0] + kPointerSize
-  // r5: number of slots to drop at exit (arguments + receiver)
-  __ AddP(r6, r2, Operand(1));
-
-  Label done_loop, loop;
-  __ LoadRR(r6, r2);
-  __ bind(&loop);
-  {
-    // Check if all parameters done.
-    __ SubP(r6, Operand(1));
-    __ blt(&done_loop);
-
-    // Load the next parameter tagged value into r2.
-    __ ShiftLeftP(r1, r6, Operand(kPointerSizeLog2));
-    __ LoadP(r4, MemOperand(sp, r1));
-
-    // Load the double value of the parameter into d2, 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(r4, &convert_smi);
-    __ LoadP(r5, FieldMemOperand(r4, HeapObject::kMapOffset));
-    __ JumpIfRoot(r5, Heap::kHeapNumberMapRootIndex, &convert_number);
-    {
-      // Parameter is not a Number, use the ToNumber builtin to convert it.
-      DCHECK(!FLAG_enable_embedded_constant_pool);
-      FrameScope scope(masm, StackFrame::MANUAL);
-      __ SmiTag(r2);
-      __ SmiTag(r6);
-      __ EnterBuiltinFrame(cp, r3, r2);
-      __ Push(r6, r7);
-      __ LoadRR(r2, r4);
-      __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
-      __ LoadRR(r4, r2);
-      __ Pop(r6, r7);
-      __ LeaveBuiltinFrame(cp, r3, r2);
-      __ SmiUntag(r6);
-      __ SmiUntag(r2);
-      {
-        // Restore the double accumulator value (d1).
-        Label done_restore;
-        __ SmiToDouble(d1, r7);
-        __ JumpIfSmi(r7, &done_restore);
-        __ LoadDouble(d1, FieldMemOperand(r7, HeapNumber::kValueOffset));
-        __ bind(&done_restore);
-      }
-    }
-    __ b(&convert);
-    __ bind(&convert_number);
-    __ LoadDouble(d2, FieldMemOperand(r4, HeapNumber::kValueOffset));
-    __ b(&done_convert);
-    __ bind(&convert_smi);
-    __ SmiToDouble(d2, r4);
-    __ bind(&done_convert);
-
-    // Perform the actual comparison with the accumulator value on the left hand
-    // side (d1) and the next parameter value on the right hand side (d2).
-    Label compare_nan, compare_swap;
-    __ cdbr(d1, d2);
-    __ bunordered(&compare_nan);
-    __ b(cond_done, &loop);
-    __ b(CommuteCondition(cond_done), &compare_swap);
-
-    // Left and right hand side are equal, check for -0 vs. +0.
-    __ TestDoubleIsMinusZero(reg, r1, r0);
-    __ bne(&loop);
-
-    // Update accumulator. Result is on the right hand side.
-    __ bind(&compare_swap);
-    __ ldr(d1, d2);
-    __ LoadRR(r7, r4);
-    __ b(&loop);
-
-    // At least one side is NaN, which means that the result will be NaN too.
-    // We still need to visit the rest of the arguments.
-    __ bind(&compare_nan);
-    __ LoadRoot(r7, Heap::kNanValueRootIndex);
-    __ LoadDouble(d1, FieldMemOperand(r7, HeapNumber::kValueOffset));
-    __ b(&loop);
-  }
-
-  __ bind(&done_loop);
-  // Drop all slots, including the receiver.
-  __ AddP(r2, Operand(1));
-  __ Drop(r2);
-  __ LoadRR(r2, r7);
-  __ Ret();
-}
-
-// static
-void Builtins::Generate_NumberConstructor(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2                     : number of arguments
-  //  -- r3                     : constructor function
-  //  -- cp                     : context
-  //  -- lr                     : return address
-  //  -- sp[(argc - n - 1) * 4] : arg[n] (zero based)
-  //  -- sp[argc * 4]           : receiver
-  // -----------------------------------
-
-  // 1. Load the first argument into r2.
-  Label no_arguments;
-  {
-    __ LoadRR(r4, r2);  // Store argc in r4.
-    __ CmpP(r2, Operand::Zero());
-    __ beq(&no_arguments);
-    __ SubP(r2, r2, Operand(1));
-    __ ShiftLeftP(r2, r2, Operand(kPointerSizeLog2));
-    __ LoadP(r2, MemOperand(sp, r2));
-  }
-
-  // 2a. Convert the first argument to a number.
-  {
-    FrameScope scope(masm, StackFrame::MANUAL);
-    __ SmiTag(r4);
-    __ EnterBuiltinFrame(cp, r3, r4);
-    __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
-    __ LeaveBuiltinFrame(cp, r3, r4);
-    __ SmiUntag(r4);
-  }
-
-  {
-    // Drop all arguments including the receiver.
-    __ Drop(r4);
-    __ Ret(1);
-  }
-
-  // 2b. No arguments, return +0.
-  __ bind(&no_arguments);
-  __ LoadSmiLiteral(r2, Smi::FromInt(0));
-  __ Ret(1);
-}
-
-// static
-void Builtins::Generate_NumberConstructor_ConstructStub(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2                     : number of arguments
-  //  -- r3                     : constructor function
-  //  -- r5                     : new target
-  //  -- lr                     : return address
-  //  -- sp[(argc - n - 1) * 4] : arg[n] (zero based)
-  //  -- sp[argc * 4]           : receiver
-  // -----------------------------------
-
-  // 1. Make sure we operate in the context of the called function.
-  __ LoadP(cp, FieldMemOperand(r3, JSFunction::kContextOffset));
-
-  // 2. Load the first argument into r4.
-  {
-    Label no_arguments, done;
-    __ LoadRR(r8, r2);  // Store argc in r8.
-    __ CmpP(r2, Operand::Zero());
-    __ beq(&no_arguments);
-    __ SubP(r2, r2, Operand(1));
-    __ ShiftLeftP(r4, r2, Operand(kPointerSizeLog2));
-    __ LoadP(r4, MemOperand(sp, r4));
-    __ b(&done);
-    __ bind(&no_arguments);
-    __ LoadSmiLiteral(r4, Smi::FromInt(0));
-    __ bind(&done);
-  }
-
-  // 3. Make sure r4 is a number.
-  {
-    Label done_convert;
-    __ JumpIfSmi(r4, &done_convert);
-    __ CompareObjectType(r4, r6, r6, HEAP_NUMBER_TYPE);
-    __ beq(&done_convert);
-    {
-      FrameScope scope(masm, StackFrame::MANUAL);
-      __ SmiTag(r8);
-      __ EnterBuiltinFrame(cp, r3, r8);
-      __ Push(r5);
-      __ LoadRR(r2, r4);
-      __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
-      __ LoadRR(r4, r2);
-      __ Pop(r5);
-      __ LeaveBuiltinFrame(cp, r3, r8);
-      __ SmiUntag(r8);
-    }
-    __ bind(&done_convert);
-  }
-
-  // 4. Check if new target and constructor differ.
-  Label drop_frame_and_ret, new_object;
-  __ CmpP(r3, r5);
-  __ bne(&new_object);
-
-  // 5. Allocate a JSValue wrapper for the number.
-  __ AllocateJSValue(r2, r3, r4, r6, r7, &new_object);
-  __ b(&drop_frame_and_ret);
-
-  // 6. Fallback to the runtime to create new object.
-  __ bind(&new_object);
-  {
-    FrameScope scope(masm, StackFrame::MANUAL);
-    FastNewObjectStub stub(masm->isolate());
-    __ SmiTag(r8);
-    __ EnterBuiltinFrame(cp, r3, r8);
-    __ Push(r4);  // first argument
-    __ CallStub(&stub);
-    __ Pop(r4);
-    __ LeaveBuiltinFrame(cp, r3, r8);
-    __ SmiUntag(r8);
-  }
-  __ StoreP(r4, FieldMemOperand(r2, JSValue::kValueOffset), r0);
-
-  __ bind(&drop_frame_and_ret);
-  {
-    __ Drop(r8);
-    __ Ret(1);
-  }
-}
-
-// static
-void Builtins::Generate_StringConstructor(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2                     : number of arguments
-  //  -- r3                     : constructor function
-  //  -- cp                     : context
-  //  -- lr                     : return address
-  //  -- sp[(argc - n - 1) * 4] : arg[n] (zero based)
-  //  -- sp[argc * 4]           : receiver
-  // -----------------------------------
-  // 1. Load the first argument into r2.
-  Label no_arguments;
-  {
-    __ LoadRR(r4, r2);  // Store argc in r4
-    __ CmpP(r2, Operand::Zero());
-    __ beq(&no_arguments);
-    __ SubP(r2, r2, Operand(1));
-    __ ShiftLeftP(r2, r2, Operand(kPointerSizeLog2));
-    __ LoadP(r2, MemOperand(sp, r2));
-  }
-
-  // 2a. At least one argument, return r2 if it's a string, otherwise
-  // dispatch to appropriate conversion.
-  Label drop_frame_and_ret, to_string, symbol_descriptive_string;
-  {
-    __ JumpIfSmi(r2, &to_string);
-    STATIC_ASSERT(FIRST_NONSTRING_TYPE == SYMBOL_TYPE);
-    __ CompareObjectType(r2, r5, r5, FIRST_NONSTRING_TYPE);
-    __ bgt(&to_string);
-    __ beq(&symbol_descriptive_string);
-    __ b(&drop_frame_and_ret);
-  }
-
-  // 2b. No arguments, return the empty string (and pop the receiver).
-  __ bind(&no_arguments);
-  {
-    __ LoadRoot(r2, Heap::kempty_stringRootIndex);
-    __ Ret(1);
-  }
-
-  // 3a. Convert r2 to a string.
-  __ bind(&to_string);
-  {
-    FrameScope scope(masm, StackFrame::MANUAL);
-    ToStringStub stub(masm->isolate());
-    __ SmiTag(r4);
-    __ EnterBuiltinFrame(cp, r3, r4);
-    __ CallStub(&stub);
-    __ LeaveBuiltinFrame(cp, r3, r4);
-    __ SmiUntag(r4);
-  }
-  __ b(&drop_frame_and_ret);
-  // 3b. Convert symbol in r2 to a string.
-  __ bind(&symbol_descriptive_string);
-  {
-    __ Drop(r4);
-    __ Drop(1);
-    __ Push(r2);
-    __ TailCallRuntime(Runtime::kSymbolDescriptiveString);
-  }
-
-  __ bind(&drop_frame_and_ret);
-  {
-    __ Drop(r4);
-    __ Ret(1);
-  }
-}
-
-// static
-void Builtins::Generate_StringConstructor_ConstructStub(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2                     : number of arguments
-  //  -- r3                     : constructor function
-  //  -- r5                     : new target
-  //  -- cp                     : context
-  //  -- lr                     : return address
-  //  -- sp[(argc - n - 1) * 4] : arg[n] (zero based)
-  //  -- sp[argc * 4]           : receiver
-  // -----------------------------------
-
-  // 1. Make sure we operate in the context of the called function.
-  __ LoadP(cp, FieldMemOperand(r3, JSFunction::kContextOffset));
-
-  // 2. Load the first argument into r4.
-  {
-    Label no_arguments, done;
-    __ LoadRR(r8, r2);  // Store argc in r8.
-    __ CmpP(r2, Operand::Zero());
-    __ beq(&no_arguments);
-    __ SubP(r2, r2, Operand(1));
-    __ ShiftLeftP(r4, r2, Operand(kPointerSizeLog2));
-    __ LoadP(r4, MemOperand(sp, r4));
-    __ b(&done);
-    __ bind(&no_arguments);
-    __ LoadRoot(r4, Heap::kempty_stringRootIndex);
-    __ bind(&done);
-  }
-
-  // 3. Make sure r4 is a string.
-  {
-    Label convert, done_convert;
-    __ JumpIfSmi(r4, &convert);
-    __ CompareObjectType(r4, r6, r6, FIRST_NONSTRING_TYPE);
-    __ blt(&done_convert);
-    __ bind(&convert);
-    {
-      FrameScope scope(masm, StackFrame::MANUAL);
-      ToStringStub stub(masm->isolate());
-      __ SmiTag(r8);
-      __ EnterBuiltinFrame(cp, r3, r8);
-      __ Push(r5);
-      __ LoadRR(r2, r4);
-      __ CallStub(&stub);
-      __ LoadRR(r4, r2);
-      __ Pop(r5);
-      __ LeaveBuiltinFrame(cp, r3, r8);
-      __ SmiUntag(r8);
-    }
-    __ bind(&done_convert);
-  }
-
-  // 4. Check if new target and constructor differ.
-  Label drop_frame_and_ret, new_object;
-  __ CmpP(r3, r5);
-  __ bne(&new_object);
-
-  // 5. Allocate a JSValue wrapper for the string.
-  __ AllocateJSValue(r2, r3, r4, r6, r7, &new_object);
-  __ b(&drop_frame_and_ret);
-
-  // 6. Fallback to the runtime to create new object.
-  __ bind(&new_object);
-  {
-    FrameScope scope(masm, StackFrame::MANUAL);
-    FastNewObjectStub stub(masm->isolate());
-    __ SmiTag(r8);
-    __ EnterBuiltinFrame(cp, r3, r8);
-    __ Push(r4);  // first argument
-    __ CallStub(&stub);
-    __ Pop(r4);
-    __ LeaveBuiltinFrame(cp, r3, r8);
-    __ SmiUntag(r8);
-  }
-  __ StoreP(r4, FieldMemOperand(r2, JSValue::kValueOffset), r0);
-
-  __ bind(&drop_frame_and_ret);
-  {
-    __ Drop(r8);
-    __ Ret(1);
-  }
-}
-
-static void GenerateTailCallToSharedCode(MacroAssembler* masm) {
-  __ LoadP(ip, FieldMemOperand(r3, JSFunction::kSharedFunctionInfoOffset));
-  __ LoadP(ip, FieldMemOperand(ip, SharedFunctionInfo::kCodeOffset));
-  __ AddP(ip, Operand(Code::kHeaderSize - kHeapObjectTag));
-  __ JumpToJSEntry(ip);
-}
-
-static void GenerateTailCallToReturnedCode(MacroAssembler* masm,
-                                           Runtime::FunctionId function_id) {
-  // ----------- S t a t e -------------
-  //  -- r2 : argument count (preserved for callee)
-  //  -- r3 : target function (preserved for callee)
-  //  -- r5 : new target (preserved for callee)
-  // -----------------------------------
-  {
-    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
-    // Push the number of arguments to the callee.
-    // Push a copy of the target function and the new target.
-    // Push function as parameter to the runtime call.
-    __ SmiTag(r2);
-    __ Push(r2, r3, r5, r3);
-
-    __ CallRuntime(function_id, 1);
-    __ LoadRR(r4, r2);
-
-    // Restore target function and new target.
-    __ Pop(r2, r3, r5);
-    __ SmiUntag(r2);
-  }
-  __ AddP(ip, r4, Operand(Code::kHeaderSize - kHeapObjectTag));
-  __ JumpToJSEntry(ip);
-}
-
-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;
-  __ CmpLogicalP(sp, RootMemOperand(Heap::kStackLimitRootIndex));
-  __ bge(&ok, Label::kNear);
-
-  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 -------------
-  //  -- r2     : number of arguments
-  //  -- r3     : constructor function
-  //  -- r4     : allocation site or undefined
-  //  -- r5     : new target
-  //  -- cp     : context
-  //  -- lr     : return address
-  //  -- sp[...]: constructor arguments
-  // -----------------------------------
-
-  Isolate* isolate = masm->isolate();
-
-  // Enter a construct frame.
-  {
-    FrameAndConstantPoolScope scope(masm, StackFrame::CONSTRUCT);
-
-    // Preserve the incoming parameters on the stack.
-    __ AssertUndefinedOrAllocationSite(r4, r6);
-
-    if (!create_implicit_receiver) {
-      __ SmiTag(r6, r2);
-      __ LoadAndTestP(r6, r6);
-      __ Push(cp, r4, r6);
-      __ PushRoot(Heap::kTheHoleValueRootIndex);
-    } else {
-      __ SmiTag(r2);
-      __ Push(cp, r4, r2);
-
-      // Allocate the new receiver object.
-      __ Push(r3, r5);
-      FastNewObjectStub stub(masm->isolate());
-      __ CallStub(&stub);
-      __ LoadRR(r6, r2);
-      __ Pop(r3, r5);
-
-      // ----------- S t a t e -------------
-      //  -- r3: constructor function
-      //  -- r5: new target
-      //  -- r6: newly allocated object
-      // -----------------------------------
-
-      // Retrieve smi-tagged arguments count from the stack.
-      __ LoadP(r2, MemOperand(sp));
-      __ SmiUntag(r2);
-      __ LoadAndTestP(r2, r2);
-
-      // 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(r6, r6);
-    }
-
-    // Set up pointer to last argument.
-    __ la(r4, MemOperand(fp, StandardFrameConstants::kCallerSPOffset));
-
-    // Copy arguments and receiver to the expression stack.
-    // r2: number of arguments
-    // r3: constructor function
-    // r4: address of last argument (caller sp)
-    // r5: new target
-    // cr0: condition indicating whether r2 is zero
-    // sp[0]: receiver
-    // sp[1]: receiver
-    // sp[2]: number of arguments (smi-tagged)
-    Label loop, no_args;
-    __ beq(&no_args);
-    __ ShiftLeftP(ip, r2, Operand(kPointerSizeLog2));
-    __ SubP(sp, sp, ip);
-    __ LoadRR(r1, r2);
-    __ bind(&loop);
-    __ lay(ip, MemOperand(ip, -kPointerSize));
-    __ LoadP(r0, MemOperand(ip, r4));
-    __ StoreP(r0, MemOperand(ip, sp));
-    __ BranchOnCount(r1, &loop);
-    __ bind(&no_args);
-
-    // Call the function.
-    // r2: number of arguments
-    // r3: constructor function
-    // r5: new target
-
-    ParameterCount actual(r2);
-    __ InvokeFunction(r3, r5, 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.
-    // r2: result
-    // sp[0]: receiver
-    // sp[1]: number of arguments (smi-tagged)
-    __ LoadP(cp, MemOperand(fp, 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.
-      // r2: result
-      // sp[0]: receiver
-      // sp[1]: new.target
-      // sp[2]: number of arguments (smi-tagged)
-      __ JumpIfSmi(r2, &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.
-      __ CompareObjectType(r2, r3, r5, FIRST_JS_RECEIVER_TYPE);
-      __ bge(&exit);
-
-      // Throw away the result of the constructor invocation and use the
-      // on-stack receiver as the result.
-      __ bind(&use_receiver);
-      __ LoadP(r2, MemOperand(sp));
-
-      // Remove receiver from the stack, remove caller arguments, and
-      // return.
-      __ bind(&exit);
-      // r2: result
-      // sp[0]: receiver (newly allocated object)
-      // sp[1]: number of arguments (smi-tagged)
-      __ LoadP(r3, MemOperand(sp, 1 * kPointerSize));
-    } else {
-      __ LoadP(r3, MemOperand(sp));
-    }
-
-    // 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(r2, &dont_throw);
-    {
-      FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
-      __ CallRuntime(Runtime::kThrowDerivedConstructorReturnedNonObject);
-    }
-    __ bind(&dont_throw);
-  }
-
-  __ SmiToPtrArrayOffset(r3, r3);
-  __ AddP(sp, sp, r3);
-  __ AddP(sp, sp, Operand(kPointerSize));
-  if (create_implicit_receiver) {
-    __ IncrementCounter(isolate->counters()->constructed_objects(), 1, r3, r4);
-  }
-  __ Ret();
-}
-
-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);
-}
-
-// static
-void Builtins::Generate_ResumeGeneratorTrampoline(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2 : the value to pass to the generator
-  //  -- r3 : the JSGeneratorObject to resume
-  //  -- r4 : the resume mode (tagged)
-  //  -- lr : return address
-  // -----------------------------------
-  __ AssertGeneratorObject(r3);
-
-  // Store input value into generator object.
-  __ StoreP(r2, FieldMemOperand(r3, JSGeneratorObject::kInputOrDebugPosOffset),
-            r0);
-  __ RecordWriteField(r3, JSGeneratorObject::kInputOrDebugPosOffset, r2, r5,
-                      kLRHasNotBeenSaved, kDontSaveFPRegs);
-
-  // Store resume mode into generator object.
-  __ StoreP(r4, FieldMemOperand(r3, JSGeneratorObject::kResumeModeOffset));
-
-  // Load suspended function and context.
-  __ LoadP(cp, FieldMemOperand(r3, JSGeneratorObject::kContextOffset));
-  __ LoadP(r6, FieldMemOperand(r3, 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());
-  STATIC_ASSERT(StepFrame > StepIn);
-  __ mov(ip, Operand(last_step_action));
-  __ LoadB(ip, MemOperand(ip));
-  __ CmpP(ip, Operand(StepIn));
-  __ bge(&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());
-
-  __ mov(ip, Operand(debug_suspended_generator));
-  __ LoadP(ip, MemOperand(ip));
-  __ CmpP(ip, r3);
-  __ beq(&prepare_step_in_suspended_generator);
-  __ bind(&stepping_prepared);
-
-  // Push receiver.
-  __ LoadP(ip, FieldMemOperand(r3, JSGeneratorObject::kReceiverOffset));
-  __ Push(ip);
-
-  // ----------- S t a t e -------------
-  //  -- r3    : the JSGeneratorObject to resume
-  //  -- r4    : the resume mode (tagged)
-  //  -- r6    : generator function
-  //  -- cp    : generator context
-  //  -- lr    : return address
-  //  -- sp[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.
-  __ LoadP(r5, FieldMemOperand(r6, JSFunction::kSharedFunctionInfoOffset));
-  __ LoadW(
-      r2, FieldMemOperand(r5, SharedFunctionInfo::kFormalParameterCountOffset));
-  {
-    Label loop, done_loop;
-    __ LoadRoot(ip, Heap::kTheHoleValueRootIndex);
-#if V8_TARGET_ARCH_S390X
-    __ CmpP(r2, Operand::Zero());
-    __ beq(&done_loop);
-#else
-    __ SmiUntag(r2);
-    __ LoadAndTestP(r2, r2);
-    __ beq(&done_loop);
-#endif
-    __ LoadRR(r1, r2);
-    __ bind(&loop);
-    __ push(ip);
-    __ BranchOnCount(r1, &loop);
-    __ bind(&done_loop);
-  }
-
-  // Dispatch on the kind of generator object.
-  Label old_generator;
-  __ LoadP(r5, FieldMemOperand(r5, SharedFunctionInfo::kFunctionDataOffset));
-  __ CompareObjectType(r5, r5, r5, BYTECODE_ARRAY_TYPE);
-  __ bne(&old_generator, Label::kNear);
-
-  // New-style (ignition/turbofan) generator object
-  {
-    // 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.
-    __ LoadRR(r5, r3);
-    __ LoadRR(r3, r6);
-    __ LoadP(ip, FieldMemOperand(r3, JSFunction::kCodeEntryOffset));
-    __ JumpToJSEntry(ip);
-  }
-  // 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);
-    __ PushStandardFrame(r6);
-
-    // Restore the operand stack.
-    __ LoadP(r2, FieldMemOperand(r3, JSGeneratorObject::kOperandStackOffset));
-    __ LoadP(r5, FieldMemOperand(r2, FixedArray::kLengthOffset));
-    __ AddP(r2, r2,
-            Operand(FixedArray::kHeaderSize - kHeapObjectTag - kPointerSize));
-    {
-      Label loop, done_loop;
-      __ SmiUntag(r5);
-      __ LoadAndTestP(r5, r5);
-      __ beq(&done_loop);
-      __ LoadRR(r1, r5);
-      __ bind(&loop);
-      __ LoadP(ip, MemOperand(r2, kPointerSize));
-      __ la(r2, MemOperand(r2, kPointerSize));
-      __ Push(ip);
-      __ BranchOnCount(r1, &loop);
-      __ bind(&done_loop);
-    }
-
-    // Reset operand stack so we don't leak.
-    __ LoadRoot(ip, Heap::kEmptyFixedArrayRootIndex);
-    __ StoreP(ip, FieldMemOperand(r3, JSGeneratorObject::kOperandStackOffset),
-              r0);
-
-    // Resume the generator function at the continuation.
-    __ LoadP(r5, FieldMemOperand(r6, JSFunction::kSharedFunctionInfoOffset));
-    __ LoadP(r5, FieldMemOperand(r5, SharedFunctionInfo::kCodeOffset));
-    __ AddP(r5, r5, Operand(Code::kHeaderSize - kHeapObjectTag));
-    {
-      ConstantPoolUnavailableScope constant_pool_unavailable(masm);
-      __ LoadP(r4, FieldMemOperand(r3, JSGeneratorObject::kContinuationOffset));
-      __ SmiUntag(r4);
-      __ AddP(r5, r5, r4);
-      __ LoadSmiLiteral(r4,
-                        Smi::FromInt(JSGeneratorObject::kGeneratorExecuting));
-      __ StoreP(r4, FieldMemOperand(r3, JSGeneratorObject::kContinuationOffset),
-                r0);
-      __ LoadRR(r2, r3);  // Continuation expects generator object in r2.
-      __ Jump(r5);
-    }
-  }
-
-  __ bind(&prepare_step_in_if_stepping);
-  {
-    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
-    __ Push(r3, r4, r6);
-    __ CallRuntime(Runtime::kDebugPrepareStepInIfStepping);
-    __ Pop(r3, r4);
-    __ LoadP(r6, FieldMemOperand(r3, JSGeneratorObject::kFunctionOffset));
-  }
-  __ b(&stepping_prepared);
-
-  __ bind(&prepare_step_in_suspended_generator);
-  {
-    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
-    __ Push(r3, r4);
-    __ CallRuntime(Runtime::kDebugPrepareStepInSuspendedGenerator);
-    __ Pop(r3, r4);
-    __ LoadP(r6, FieldMemOperand(r3, JSGeneratorObject::kFunctionOffset));
-  }
-  __ b(&stepping_prepared);
-}
-
-void Builtins::Generate_ConstructedNonConstructable(MacroAssembler* masm) {
-  FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
-  __ push(r3);
-  __ CallRuntime(Runtime::kThrowConstructedNonConstructable);
-}
-
-enum IsTagged { kArgcIsSmiTagged, kArgcIsUntaggedInt };
-
-// Clobbers r4; preserves all other registers.
-static void Generate_CheckStackOverflow(MacroAssembler* masm, Register argc,
-                                        IsTagged argc_is_tagged) {
-  // 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(r4, Heap::kRealStackLimitRootIndex);
-  // Make r4 the space we have left. The stack might already be overflowed
-  // here which will cause r4 to become negative.
-  __ SubP(r4, sp, r4);
-  // Check if the arguments will overflow the stack.
-  if (argc_is_tagged == kArgcIsSmiTagged) {
-    __ SmiToPtrArrayOffset(r0, argc);
-  } else {
-    DCHECK(argc_is_tagged == kArgcIsUntaggedInt);
-    __ ShiftLeftP(r0, argc, Operand(kPointerSizeLog2));
-  }
-  __ CmpP(r4, r0);
-  __ bgt(&okay);  // Signed comparison.
-
-  // Out of stack space.
-  __ CallRuntime(Runtime::kThrowStackOverflow);
-
-  __ bind(&okay);
-}
-
-static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm,
-                                             bool is_construct) {
-  // Called from Generate_JS_Entry
-  // r2: new.target
-  // r3: function
-  // r4: receiver
-  // r5: argc
-  // r6: argv
-  // r0,r7-r9, cp may be clobbered
-  ProfileEntryHookStub::MaybeCallEntryHook(masm);
-
-  // Enter an internal frame.
-  {
-    // FrameScope ends up calling MacroAssembler::EnterFrame here
-    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());
-    __ mov(cp, Operand(context_address));
-    __ LoadP(cp, MemOperand(cp));
-
-    __ InitializeRootRegister();
-
-    // Push the function and the receiver onto the stack.
-    __ Push(r3, r4);
-
-    // Check if we have enough stack space to push all arguments.
-    // Clobbers r4.
-    Generate_CheckStackOverflow(masm, r5, kArgcIsUntaggedInt);
-
-    // Copy arguments to the stack in a loop from argv to sp.
-    // The arguments are actually placed in reverse order on sp
-    // compared to argv (i.e. arg1 is highest memory in sp).
-    // r3: function
-    // r5: argc
-    // r6: argv, i.e. points to first arg
-    // r7: scratch reg to hold scaled argc
-    // r8: scratch reg to hold arg handle
-    // r9: scratch reg to hold index into argv
-    Label argLoop, argExit;
-    intptr_t zero = 0;
-    __ ShiftLeftP(r7, r5, Operand(kPointerSizeLog2));
-    __ SubRR(sp, r7);                // Buy the stack frame to fit args
-    __ LoadImmP(r9, Operand(zero));  // Initialize argv index
-    __ bind(&argLoop);
-    __ CmpPH(r7, Operand(zero));
-    __ beq(&argExit, Label::kNear);
-    __ lay(r7, MemOperand(r7, -kPointerSize));
-    __ LoadP(r8, MemOperand(r9, r6));         // read next parameter
-    __ la(r9, MemOperand(r9, kPointerSize));  // r9++;
-    __ LoadP(r0, MemOperand(r8));             // dereference handle
-    __ StoreP(r0, MemOperand(r7, sp));        // push parameter
-    __ b(&argLoop);
-    __ bind(&argExit);
-
-    // Setup new.target and argc.
-    __ LoadRR(r6, r2);
-    __ LoadRR(r2, r5);
-    __ LoadRR(r5, r6);
-
-    // Initialize all JavaScript callee-saved registers, since they will be seen
-    // by the garbage collector as part of handlers.
-    __ LoadRoot(r6, Heap::kUndefinedValueRootIndex);
-    __ LoadRR(r7, r6);
-    __ LoadRR(r8, r6);
-    __ LoadRR(r9, r6);
-
-    // Invoke the code.
-    Handle<Code> builtin = is_construct
-                               ? masm->isolate()->builtins()->Construct()
-                               : masm->isolate()->builtins()->Call();
-    __ Call(builtin, RelocInfo::CODE_TARGET);
-
-    // Exit the JS frame and remove the parameters (except function), and
-    // return.
-  }
-  __ b(r14);
-
-  // r2: result
-}
-
-void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) {
-  Generate_JSEntryTrampolineHelper(masm, false);
-}
-
-void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) {
-  Generate_JSEntryTrampolineHelper(masm, true);
-}
-
-static void LeaveInterpreterFrame(MacroAssembler* masm, Register scratch) {
-  Register args_count = scratch;
-
-  // Get the arguments + receiver count.
-  __ LoadP(args_count,
-           MemOperand(fp, InterpreterFrameConstants::kBytecodeArrayFromFp));
-  __ LoadlW(args_count,
-            FieldMemOperand(args_count, BytecodeArray::kParameterSizeOffset));
-
-  // Leave the frame (also dropping the register file).
-  __ LeaveFrame(StackFrame::JAVA_SCRIPT);
-
-  __ AddP(sp, sp, args_count);
-}
-
-// 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 r3: the JS function object being called.
-//   o r5: the new target
-//   o cp: our context
-//   o pp: the caller's constant pool pointer (if enabled)
-//   o fp: the caller's frame pointer
-//   o sp: stack pointer
-//   o lr: 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);
-  __ PushStandardFrame(r3);
-
-  // Get the bytecode array from the function object (or from the DebugInfo if
-  // it is present) and load it into kInterpreterBytecodeArrayRegister.
-  __ LoadP(r2, FieldMemOperand(r3, JSFunction::kSharedFunctionInfoOffset));
-  Label array_done;
-  Register debug_info = r4;
-  DCHECK(!debug_info.is(r2));
-  __ LoadP(debug_info,
-           FieldMemOperand(r2, SharedFunctionInfo::kDebugInfoOffset));
-  // Load original bytecode array or the debug copy.
-  __ LoadP(kInterpreterBytecodeArrayRegister,
-           FieldMemOperand(r2, SharedFunctionInfo::kFunctionDataOffset));
-  __ CmpSmiLiteral(debug_info, DebugInfo::uninitialized(), r0);
-  __ beq(&array_done);
-  __ LoadP(kInterpreterBytecodeArrayRegister,
-           FieldMemOperand(debug_info, DebugInfo::kAbstractCodeIndex));
-  __ bind(&array_done);
-
-  // Check function data field is actually a BytecodeArray object.
-  Label bytecode_array_not_present;
-  __ CompareRoot(kInterpreterBytecodeArrayRegister,
-                 Heap::kUndefinedValueRootIndex);
-  __ beq(&bytecode_array_not_present);
-
-  if (FLAG_debug_code) {
-    __ TestIfSmi(kInterpreterBytecodeArrayRegister);
-    __ Assert(ne, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
-    __ CompareObjectType(kInterpreterBytecodeArrayRegister, r2, no_reg,
-                         BYTECODE_ARRAY_TYPE);
-    __ Assert(eq, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
-  }
-
-  // Load the initial bytecode offset.
-  __ mov(kInterpreterBytecodeOffsetRegister,
-         Operand(BytecodeArray::kHeaderSize - kHeapObjectTag));
-
-  // Push new.target, bytecode array and Smi tagged bytecode array offset.
-  __ SmiTag(r4, kInterpreterBytecodeOffsetRegister);
-  __ Push(r5, kInterpreterBytecodeArrayRegister, r4);
-
-  // Allocate the local and temporary register file on the stack.
-  {
-    // Load frame size (word) from the BytecodeArray object.
-    __ LoadlW(r4, FieldMemOperand(kInterpreterBytecodeArrayRegister,
-                                  BytecodeArray::kFrameSizeOffset));
-
-    // Do a stack check to ensure we don't go over the limit.
-    Label ok;
-    __ SubP(r5, sp, r4);
-    __ LoadRoot(r0, Heap::kRealStackLimitRootIndex);
-    __ CmpLogicalP(r5, r0);
-    __ bge(&ok);
-    __ CallRuntime(Runtime::kThrowStackOverflow);
-    __ bind(&ok);
-
-    // If ok, push undefined as the initial value for all register file entries.
-    // TODO(rmcilroy): Consider doing more than one push per loop iteration.
-    Label loop, no_args;
-    __ LoadRoot(r5, Heap::kUndefinedValueRootIndex);
-    __ ShiftRightP(r4, r4, Operand(kPointerSizeLog2));
-    __ LoadAndTestP(r4, r4);
-    __ beq(&no_args);
-    __ LoadRR(r1, r4);
-    __ bind(&loop);
-    __ push(r5);
-    __ SubP(r1, Operand(1));
-    __ bne(&loop);
-    __ bind(&no_args);
-  }
-
-  // Load accumulator and dispatch table into registers.
-  __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex);
-  __ mov(kInterpreterDispatchTableRegister,
-         Operand(ExternalReference::interpreter_dispatch_table_address(
-             masm->isolate())));
-
-  // Dispatch to the first bytecode handler for the function.
-  __ LoadlB(r3, MemOperand(kInterpreterBytecodeArrayRegister,
-                           kInterpreterBytecodeOffsetRegister));
-  __ ShiftLeftP(ip, r3, Operand(kPointerSizeLog2));
-  __ LoadP(ip, MemOperand(kInterpreterDispatchTableRegister, ip));
-  __ Call(ip);
-
-  masm->isolate()->heap()->SetInterpreterEntryReturnPCOffset(masm->pc_offset());
-
-  // The return value is in r2.
-  LeaveInterpreterFrame(masm, r4);
-  __ Ret();
-
-  // 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);
-  __ LeaveFrame(StackFrame::JAVA_SCRIPT);
-  __ LoadP(r6, FieldMemOperand(r3, JSFunction::kSharedFunctionInfoOffset));
-  __ LoadP(r6, FieldMemOperand(r6, SharedFunctionInfo::kCodeOffset));
-  __ AddP(r6, r6, Operand(Code::kHeaderSize - kHeapObjectTag));
-  __ StoreP(r6, FieldMemOperand(r3, JSFunction::kCodeEntryOffset), r0);
-  __ RecordWriteCodeEntryField(r3, r6, r7);
-  __ JumpToJSEntry(r6);
-}
-
-void Builtins::Generate_InterpreterMarkBaselineOnReturn(MacroAssembler* masm) {
-  // Save the function and context for call to CompileBaseline.
-  __ LoadP(r3, MemOperand(fp, StandardFrameConstants::kFunctionOffset));
-  __ LoadP(kContextRegister,
-           MemOperand(fp, StandardFrameConstants::kContextOffset));
-
-  // Leave the frame before recompiling for baseline so that we don't count as
-  // an activation on the stack.
-  LeaveInterpreterFrame(masm, r4);
-
-  {
-    FrameScope frame_scope(masm, StackFrame::INTERNAL);
-    // Push return value.
-    __ push(r2);
-
-    // Push function as argument and compile for baseline.
-    __ push(r3);
-    __ CallRuntime(Runtime::kCompileBaseline);
-
-    // Restore return value.
-    __ pop(r2);
-  }
-  __ Ret();
-}
-
-static void Generate_InterpreterPushArgs(MacroAssembler* masm, Register index,
-                                         Register count, Register scratch) {
-  Label loop;
-  __ AddP(index, index, Operand(kPointerSize));  // Bias up for LoadPU
-  __ LoadRR(r0, count);
-  __ bind(&loop);
-  __ LoadP(scratch, MemOperand(index, -kPointerSize));
-  __ lay(index, MemOperand(index, -kPointerSize));
-  __ push(scratch);
-  __ SubP(r0, Operand(1));
-  __ bne(&loop);
-}
-
-// static
-void Builtins::Generate_InterpreterPushArgsAndCallImpl(
-    MacroAssembler* masm, TailCallMode tail_call_mode,
-    CallableType function_type) {
-  // ----------- S t a t e -------------
-  //  -- r2 : the number of arguments (not including the receiver)
-  //  -- r4 : 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.
-  //  -- r3 : the target to call (can be any Object).
-  // -----------------------------------
-
-  // Calculate number of arguments (AddP one for receiver).
-  __ AddP(r5, r2, Operand(1));
-
-  // Push the arguments.
-  Generate_InterpreterPushArgs(masm, r4, r5, r6);
-
-  // Call the target.
-  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 -------------
-  // -- r2 : argument count (not including receiver)
-  // -- r5 : new target
-  // -- r3 : constructor to call
-  // -- r4 : address of the first argument
-  // -----------------------------------
-
-  // Push a slot for the receiver to be constructed.
-  __ LoadImmP(r0, Operand::Zero());
-  __ push(r0);
-
-  // Push the arguments (skip if none).
-  Label skip;
-  __ CmpP(r2, Operand::Zero());
-  __ beq(&skip);
-  Generate_InterpreterPushArgs(masm, r4, r2, r6);
-  __ bind(&skip);
-
-  // Call the constructor with r2, r3, and r5 unmodified.
-  __ 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(r4, masm->isolate()->builtins()->InterpreterEntryTrampoline());
-  __ AddP(r14, r4, Operand(interpreter_entry_return_pc_offset->value() +
-                           Code::kHeaderSize - kHeapObjectTag));
-
-  // Initialize the dispatch table register.
-  __ mov(kInterpreterDispatchTableRegister,
-         Operand(ExternalReference::interpreter_dispatch_table_address(
-             masm->isolate())));
-
-  // Get the bytecode array pointer from the frame.
-  __ LoadP(kInterpreterBytecodeArrayRegister,
-           MemOperand(fp, InterpreterFrameConstants::kBytecodeArrayFromFp));
-
-  if (FLAG_debug_code) {
-    // Check function data field is actually a BytecodeArray object.
-    __ TestIfSmi(kInterpreterBytecodeArrayRegister);
-    __ Assert(ne, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
-    __ CompareObjectType(kInterpreterBytecodeArrayRegister, r3, no_reg,
-                         BYTECODE_ARRAY_TYPE);
-    __ Assert(eq, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
-  }
-
-  // Get the target bytecode offset from the frame.
-  __ LoadP(kInterpreterBytecodeOffsetRegister,
-           MemOperand(fp, InterpreterFrameConstants::kBytecodeOffsetFromFp));
-  __ SmiUntag(kInterpreterBytecodeOffsetRegister);
-
-  // Dispatch to the target bytecode.
-  __ LoadlB(r3, MemOperand(kInterpreterBytecodeArrayRegister,
-                           kInterpreterBytecodeOffsetRegister));
-  __ ShiftLeftP(ip, r3, Operand(kPointerSizeLog2));
-  __ LoadP(ip, MemOperand(kInterpreterDispatchTableRegister, ip));
-  __ Jump(ip);
-}
-
-void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2 : argument count (preserved for callee)
-  //  -- r5 : new target (preserved for callee)
-  //  -- r3 : 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 = r3;
-  Register map = r8;
-  Register index = r4;
-  __ LoadP(map,
-           FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset));
-  __ LoadP(map,
-           FieldMemOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset));
-  __ LoadP(index, FieldMemOperand(map, FixedArray::kLengthOffset));
-  __ CmpSmiLiteral(index, Smi::FromInt(2), r0);
-  __ blt(&gotta_call_runtime);
-
-  // Find literals.
-  // r9 : native context
-  // r4  : length / index
-  // r8  : optimized code map
-  // r5  : new target
-  // r3  : closure
-  Register native_context = r9;
-  __ LoadP(native_context, NativeContextMemOperand());
-
-  __ bind(&loop_top);
-  Register temp = r1;
-  Register array_pointer = r7;
-
-  // Does the native context match?
-  __ SmiToPtrArrayOffset(array_pointer, index);
-  __ AddP(array_pointer, map, array_pointer);
-  __ LoadP(temp, FieldMemOperand(array_pointer,
-                                 SharedFunctionInfo::kOffsetToPreviousContext));
-  __ LoadP(temp, FieldMemOperand(temp, WeakCell::kValueOffset));
-  __ CmpP(temp, native_context);
-  __ bne(&loop_bottom, Label::kNear);
-  // OSR id set to none?
-  __ LoadP(temp,
-           FieldMemOperand(array_pointer,
-                           SharedFunctionInfo::kOffsetToPreviousOsrAstId));
-  const int bailout_id = BailoutId::None().ToInt();
-  __ CmpSmiLiteral(temp, Smi::FromInt(bailout_id), r0);
-  __ bne(&loop_bottom, Label::kNear);
-  // Literals available?
-  __ LoadP(temp,
-           FieldMemOperand(array_pointer,
-                           SharedFunctionInfo::kOffsetToPreviousLiterals));
-  __ LoadP(temp, FieldMemOperand(temp, WeakCell::kValueOffset));
-  __ JumpIfSmi(temp, &gotta_call_runtime);
-
-  // Save the literals in the closure.
-  __ StoreP(temp, FieldMemOperand(closure, JSFunction::kLiteralsOffset), r0);
-  __ RecordWriteField(closure, JSFunction::kLiteralsOffset, temp, r6,
-                      kLRHasNotBeenSaved, kDontSaveFPRegs, EMIT_REMEMBERED_SET,
-                      OMIT_SMI_CHECK);
-
-  // Code available?
-  Register entry = r6;
-  __ LoadP(entry,
-           FieldMemOperand(array_pointer,
-                           SharedFunctionInfo::kOffsetToPreviousCachedCode));
-  __ LoadP(entry, FieldMemOperand(entry, WeakCell::kValueOffset));
-  __ JumpIfSmi(entry, &maybe_call_runtime);
-
-  // Found literals and code. Get them into the closure and return.
-  // Store code entry in the closure.
-  __ AddP(entry, entry, Operand(Code::kHeaderSize - kHeapObjectTag));
-
-  Label install_optimized_code_and_tailcall;
-  __ bind(&install_optimized_code_and_tailcall);
-  __ StoreP(entry, FieldMemOperand(closure, JSFunction::kCodeEntryOffset), r0);
-  __ RecordWriteCodeEntryField(closure, entry, r7);
-
-  // Link the closure into the optimized function list.
-  // r6 : code entry
-  // r9: native context
-  // r3 : closure
-  __ LoadP(
-      r7, ContextMemOperand(native_context, Context::OPTIMIZED_FUNCTIONS_LIST));
-  __ StoreP(r7, FieldMemOperand(closure, JSFunction::kNextFunctionLinkOffset),
-            r0);
-  __ RecordWriteField(closure, JSFunction::kNextFunctionLinkOffset, r7, temp,
-                      kLRHasNotBeenSaved, kDontSaveFPRegs, EMIT_REMEMBERED_SET,
-                      OMIT_SMI_CHECK);
-  const int function_list_offset =
-      Context::SlotOffset(Context::OPTIMIZED_FUNCTIONS_LIST);
-  __ StoreP(
-      closure,
-      ContextMemOperand(native_context, Context::OPTIMIZED_FUNCTIONS_LIST), r0);
-  // Save closure before the write barrier.
-  __ LoadRR(r7, closure);
-  __ RecordWriteContextSlot(native_context, function_list_offset, r7, temp,
-                            kLRHasNotBeenSaved, kDontSaveFPRegs);
-  __ JumpToJSEntry(entry);
-
-  __ bind(&loop_bottom);
-  __ SubSmiLiteral(index, index, Smi::FromInt(SharedFunctionInfo::kEntryLength),
-                   r0);
-  __ CmpSmiLiteral(index, Smi::FromInt(1), r0);
-  __ bgt(&loop_top);
-
-  // We found neither literals nor code.
-  __ b(&gotta_call_runtime);
-
-  __ bind(&maybe_call_runtime);
-
-  // Last possibility. Check the context free optimized code map entry.
-  __ LoadP(entry,
-           FieldMemOperand(map, FixedArray::kHeaderSize +
-                                    SharedFunctionInfo::kSharedCodeIndex));
-  __ LoadP(entry, FieldMemOperand(entry, WeakCell::kValueOffset));
-  __ JumpIfSmi(entry, &try_shared);
-
-  // Store code entry in the closure.
-  __ AddP(entry, entry, Operand(Code::kHeaderSize - kHeapObjectTag));
-  __ b(&install_optimized_code_and_tailcall);
-
-  __ bind(&try_shared);
-  // Is the full code valid?
-  __ LoadP(entry,
-           FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset));
-  __ LoadP(entry, FieldMemOperand(entry, SharedFunctionInfo::kCodeOffset));
-  __ LoadlW(r7, FieldMemOperand(entry, Code::kFlagsOffset));
-  __ DecodeField<Code::KindField>(r7);
-  __ CmpP(r7, Operand(Code::BUILTIN));
-  __ beq(&gotta_call_runtime);
-  // Yes, install the full code.
-  __ AddP(entry, entry, Operand(Code::kHeaderSize - kHeapObjectTag));
-  __ StoreP(entry, FieldMemOperand(closure, JSFunction::kCodeEntryOffset), r0);
-  __ RecordWriteCodeEntryField(closure, entry, r7);
-  __ JumpToJSEntry(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 -------------
-  //  -- r2 : argument count (preserved for callee)
-  //  -- r3 : new target (preserved for callee)
-  //  -- r5 : target function (preserved for callee)
-  // -----------------------------------
-  Label failed;
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-    // Push a copy of the target function and the new target.
-    __ SmiTag(r2);
-    // Push another copy as a parameter to the runtime call.
-    __ Push(r2, r3, r5, r3);
-
-    // Copy arguments from caller (stdlib, foreign, heap).
-    for (int i = 2; i >= 0; --i) {
-      __ LoadP(r4, MemOperand(fp, StandardFrameConstants::kCallerSPOffset +
-                                      i * kPointerSize));
-      __ push(r4);
-    }
-    // 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(r2, &failed);
-    scope.GenerateLeaveFrame();
-    __ Drop(4);
-    __ Ret();
-
-    __ bind(&failed);
-    // Restore target function and new target.
-    __ Pop(r2, r3, r5);
-    __ SmiUntag(r2);
-  }
-  // 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.
-
-  // Point r2 at the start of the PlatformCodeAge sequence.
-  __ CleanseP(r14);
-  __ SubP(r14, Operand(kCodeAgingSequenceLength));
-  __ LoadRR(r2, r14);
-
-  __ pop(r14);
-
-  // The following registers must be saved and restored when calling through to
-  // the runtime:
-  //   r2 - contains return address (beginning of patch sequence)
-  //   r3 - isolate
-  //   r5 - new target
-  //   lr - return address
-  FrameScope scope(masm, StackFrame::MANUAL);
-  __ MultiPush(r14.bit() | r2.bit() | r3.bit() | r5.bit() | fp.bit());
-  __ PrepareCallCFunction(2, 0, r4);
-  __ mov(r3, Operand(ExternalReference::isolate_address(masm->isolate())));
-  __ CallCFunction(
-      ExternalReference::get_make_code_young_function(masm->isolate()), 2);
-  __ MultiPop(r14.bit() | r2.bit() | r3.bit() | r5.bit() | fp.bit());
-  __ LoadRR(ip, r2);
-  __ Jump(ip);
-}
-
-#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, 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.
-
-  // Point r2 at the start of the PlatformCodeAge sequence.
-  __ CleanseP(r14);
-  __ SubP(r14, Operand(kCodeAgingSequenceLength));
-  __ LoadRR(r2, r14);
-
-  __ pop(r14);
-
-  // The following registers must be saved and restored when calling through to
-  // the runtime:
-  //   r2 - contains return address (beginning of patch sequence)
-  //   r3 - isolate
-  //   r5 - new target
-  //   lr - return address
-  FrameScope scope(masm, StackFrame::MANUAL);
-  __ MultiPush(r14.bit() | r2.bit() | r3.bit() | r5.bit() | fp.bit());
-  __ PrepareCallCFunction(2, 0, r4);
-  __ mov(r3, Operand(ExternalReference::isolate_address(masm->isolate())));
-  __ CallCFunction(
-      ExternalReference::get_mark_code_as_executed_function(masm->isolate()),
-      2);
-  __ MultiPop(r14.bit() | r2.bit() | r3.bit() | r5.bit() | fp.bit());
-  __ LoadRR(ip, r2);
-
-  // Perform prologue operations usually performed by the young code stub.
-  __ PushStandardFrame(r3);
-
-  // Jump to point after the code-age stub.
-  __ AddP(r2, ip, Operand(kNoCodeAgeSequenceLength));
-  __ Jump(r2);
-}
-
-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) {
-  {
-    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.
-    __ MultiPush(kJSCallerSaved | kCalleeSaved);
-    // Pass the function and deoptimization type to the runtime system.
-    __ CallRuntime(Runtime::kNotifyStubFailure, save_doubles);
-    __ MultiPop(kJSCallerSaved | kCalleeSaved);
-  }
-
-  __ la(sp, MemOperand(sp, kPointerSize));  // Ignore state
-  __ Ret();                                 // Jump to miss handler
-}
-
-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) {
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-    // Pass the function and deoptimization type to the runtime system.
-    __ LoadSmiLiteral(r2, Smi::FromInt(static_cast<int>(type)));
-    __ push(r2);
-    __ CallRuntime(Runtime::kNotifyDeoptimized);
-  }
-
-  // Get the full codegen state from the stack and untag it -> r8.
-  __ LoadP(r8, MemOperand(sp, 0 * kPointerSize));
-  __ SmiUntag(r8);
-  // Switch on the state.
-  Label with_tos_register, unknown_state;
-  __ CmpP(
-      r8,
-      Operand(static_cast<intptr_t>(Deoptimizer::BailoutState::NO_REGISTERS)));
-  __ bne(&with_tos_register);
-  __ la(sp, MemOperand(sp, 1 * kPointerSize));  // Remove state.
-  __ Ret();
-
-  __ bind(&with_tos_register);
-  DCHECK_EQ(kInterpreterAccumulatorRegister.code(), r2.code());
-  __ LoadP(r2, MemOperand(sp, 1 * kPointerSize));
-  __ CmpP(
-      r8,
-      Operand(static_cast<intptr_t>(Deoptimizer::BailoutState::TOS_REGISTER)));
-  __ bne(&unknown_state);
-  __ la(sp, MemOperand(sp, 2 * kPointerSize));  // Remove state.
-  __ Ret();
-
-  __ bind(&unknown_state);
-  __ stop("no cases left");
-}
-
-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);
-}
-
-// Clobbers registers {r6, r7, r8, r9}.
-void CompatibleReceiverCheck(MacroAssembler* masm, Register receiver,
-                             Register function_template_info,
-                             Label* receiver_check_failed) {
-  Register signature = r6;
-  Register map = r7;
-  Register constructor = r8;
-  Register scratch = r9;
-
-  // If there is no signature, return the holder.
-  __ LoadP(signature, FieldMemOperand(function_template_info,
-                                      FunctionTemplateInfo::kSignatureOffset));
-  Label receiver_check_passed;
-  __ JumpIfRoot(signature, Heap::kUndefinedValueRootIndex,
-                &receiver_check_passed);
-
-  // Walk the prototype chain.
-  __ LoadP(map, FieldMemOperand(receiver, HeapObject::kMapOffset));
-  Label prototype_loop_start;
-  __ bind(&prototype_loop_start);
-
-  // Get the constructor, if any.
-  __ GetMapConstructor(constructor, map, scratch, scratch);
-  __ CmpP(scratch, Operand(JS_FUNCTION_TYPE));
-  Label next_prototype;
-  __ bne(&next_prototype);
-  Register type = constructor;
-  __ LoadP(type,
-           FieldMemOperand(constructor, JSFunction::kSharedFunctionInfoOffset));
-  __ LoadP(type,
-           FieldMemOperand(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);
-  __ beq(&receiver_check_passed);
-
-  // If the current type is not a FunctionTemplateInfo, load the next prototype
-  // in the chain.
-  __ JumpIfSmi(type, &next_prototype);
-  __ CompareObjectType(type, scratch, scratch, FUNCTION_TEMPLATE_INFO_TYPE);
-  __ bne(&next_prototype);
-
-  // Otherwise load the parent function template and iterate.
-  __ LoadP(type,
-           FieldMemOperand(type, FunctionTemplateInfo::kParentTemplateOffset));
-  __ b(&function_template_loop);
-
-  // Load the next prototype.
-  __ bind(&next_prototype);
-  __ LoadlW(scratch, FieldMemOperand(map, Map::kBitField3Offset));
-  __ DecodeField<Map::HasHiddenPrototype>(scratch);
-  __ beq(receiver_check_failed);
-
-  __ LoadP(receiver, FieldMemOperand(map, Map::kPrototypeOffset));
-  __ LoadP(map, FieldMemOperand(receiver, HeapObject::kMapOffset));
-  // Iterate.
-  __ b(&prototype_loop_start);
-
-  __ bind(&receiver_check_passed);
-}
-
-void Builtins::Generate_HandleFastApiCall(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2                 : number of arguments excluding receiver
-  //  -- r3                 : callee
-  //  -- lr                 : return address
-  //  -- sp[0]              : last argument
-  //  -- ...
-  //  -- sp[4 * (argc - 1)] : first argument
-  //  -- sp[4 * argc]       : receiver
-  // -----------------------------------
-
-  // Load the FunctionTemplateInfo.
-  __ LoadP(r5, FieldMemOperand(r3, JSFunction::kSharedFunctionInfoOffset));
-  __ LoadP(r5, FieldMemOperand(r5, SharedFunctionInfo::kFunctionDataOffset));
-
-  // Do the compatible receiver check.
-  Label receiver_check_failed;
-  __ ShiftLeftP(r1, r2, Operand(kPointerSizeLog2));
-  __ LoadP(r4, MemOperand(sp, r1));
-  CompatibleReceiverCheck(masm, r4, r5, &receiver_check_failed);
-
-  // Get the callback offset from the FunctionTemplateInfo, and jump to the
-  // beginning of the code.
-  __ LoadP(r6, FieldMemOperand(r5, FunctionTemplateInfo::kCallCodeOffset));
-  __ LoadP(r6, FieldMemOperand(r6, CallHandlerInfo::kFastHandlerOffset));
-  __ AddP(ip, r6, Operand(Code::kHeaderSize - kHeapObjectTag));
-  __ JumpToJSEntry(ip);
-
-  // Compatible receiver check failed: throw an Illegal Invocation exception.
-  __ bind(&receiver_check_failed);
-  // Drop the arguments (including the receiver);
-  __ AddP(r1, r1, Operand(kPointerSize));
-  __ AddP(sp, sp, r1);
-  __ TailCallRuntime(Runtime::kThrowIllegalInvocation);
-}
-
-void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) {
-  // Lookup the function in the JavaScript frame.
-  __ LoadP(r2, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-    // Pass function as argument.
-    __ push(r2);
-    __ CallRuntime(Runtime::kCompileForOnStackReplacement);
-  }
-
-  // If the code object is null, just return to the unoptimized code.
-  Label skip;
-  __ CmpSmiLiteral(r2, Smi::FromInt(0), r0);
-  __ bne(&skip);
-  __ Ret();
-
-  __ bind(&skip);
-
-  // Load deoptimization data from the code object.
-  // <deopt_data> = <code>[#deoptimization_data_offset]
-  __ LoadP(r3, FieldMemOperand(r2, Code::kDeoptimizationDataOffset));
-
-  // Load the OSR entrypoint offset from the deoptimization data.
-  // <osr_offset> = <deopt_data>[#header_size + #osr_pc_offset]
-  __ LoadP(
-      r3, FieldMemOperand(r3, FixedArray::OffsetOfElementAt(
-                                  DeoptimizationInputData::kOsrPcOffsetIndex)));
-  __ SmiUntag(r3);
-
-  // Compute the target address = code_obj + header_size + osr_offset
-  // <entry_addr> = <code_obj> + #header_size + <osr_offset>
-  __ AddP(r2, r3);
-  __ AddP(r0, r2, Operand(Code::kHeaderSize - kHeapObjectTag));
-  __ LoadRR(r14, r0);
-
-  // And "return" to the OSR entry point of the function.
-  __ Ret();
-}
-
-// static
-void Builtins::Generate_DatePrototype_GetField(MacroAssembler* masm,
-                                               int field_index) {
-  // ----------- S t a t e -------------
-  //  -- r2    : number of arguments
-  //  -- r3    : function
-  //  -- cp    : context
-
-  //  -- lr    : return address
-  //  -- sp[0] : receiver
-  // -----------------------------------
-
-  // 1. Pop receiver into r2 and check that it's actually a JSDate object.
-  Label receiver_not_date;
-  {
-    __ Pop(r2);
-    __ JumpIfSmi(r2, &receiver_not_date);
-    __ CompareObjectType(r2, r4, r5, JS_DATE_TYPE);
-    __ bne(&receiver_not_date);
-  }
-
-  // 2. Load the specified date field, falling back to the runtime as necessary.
-  if (field_index == JSDate::kDateValue) {
-    __ LoadP(r2, FieldMemOperand(r2, JSDate::kValueOffset));
-  } else {
-    if (field_index < JSDate::kFirstUncachedField) {
-      Label stamp_mismatch;
-      __ mov(r3, Operand(ExternalReference::date_cache_stamp(masm->isolate())));
-      __ LoadP(r3, MemOperand(r3));
-      __ LoadP(ip, FieldMemOperand(r2, JSDate::kCacheStampOffset));
-      __ CmpP(r3, ip);
-      __ bne(&stamp_mismatch);
-      __ LoadP(r2, FieldMemOperand(
-                       r2, JSDate::kValueOffset + field_index * kPointerSize));
-      __ Ret();
-      __ bind(&stamp_mismatch);
-    }
-    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
-    __ PrepareCallCFunction(2, r3);
-    __ LoadSmiLiteral(r3, Smi::FromInt(field_index));
-    __ CallCFunction(
-        ExternalReference::get_date_field_function(masm->isolate()), 2);
-  }
-  __ Ret();
-
-  // 3. Raise a TypeError if the receiver is not a date.
-  __ bind(&receiver_not_date);
-  {
-    FrameScope scope(masm, StackFrame::MANUAL);
-    __ push(r2);
-    __ LoadSmiLiteral(r2, Smi::FromInt(0));
-    __ EnterBuiltinFrame(cp, r3, r2);
-    __ CallRuntime(Runtime::kThrowNotDateError);
-  }
-}
-
-// static
-void Builtins::Generate_FunctionPrototypeApply(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2    : argc
-  //  -- sp[0] : argArray
-  //  -- sp[4] : thisArg
-  //  -- sp[8] : receiver
-  // -----------------------------------
-
-  // 1. Load receiver into r3, argArray into r2 (if present), remove all
-  // arguments from the stack (including the receiver), and push thisArg (if
-  // present) instead.
-  {
-    Label skip;
-    Register arg_size = r4;
-    Register new_sp = r5;
-    Register scratch = r6;
-    __ ShiftLeftP(arg_size, r2, Operand(kPointerSizeLog2));
-    __ AddP(new_sp, sp, arg_size);
-    __ LoadRoot(r2, Heap::kUndefinedValueRootIndex);
-    __ LoadRR(scratch, r2);
-    __ LoadP(r3, MemOperand(new_sp, 0));  // receiver
-    __ CmpP(arg_size, Operand(kPointerSize));
-    __ blt(&skip);
-    __ LoadP(scratch, MemOperand(new_sp, 1 * -kPointerSize));  // thisArg
-    __ beq(&skip);
-    __ LoadP(r2, MemOperand(new_sp, 2 * -kPointerSize));  // argArray
-    __ bind(&skip);
-    __ LoadRR(sp, new_sp);
-    __ StoreP(scratch, MemOperand(sp, 0));
-  }
-
-  // ----------- S t a t e -------------
-  //  -- r2    : argArray
-  //  -- r3    : receiver
-  //  -- sp[0] : thisArg
-  // -----------------------------------
-
-  // 2. Make sure the receiver is actually callable.
-  Label receiver_not_callable;
-  __ JumpIfSmi(r3, &receiver_not_callable);
-  __ LoadP(r6, FieldMemOperand(r3, HeapObject::kMapOffset));
-  __ LoadlB(r6, FieldMemOperand(r6, Map::kBitFieldOffset));
-  __ TestBit(r6, Map::kIsCallable);
-  __ beq(&receiver_not_callable);
-
-  // 3. Tail call with no arguments if argArray is null or undefined.
-  Label no_arguments;
-  __ JumpIfRoot(r2, Heap::kNullValueRootIndex, &no_arguments);
-  __ JumpIfRoot(r2, Heap::kUndefinedValueRootIndex, &no_arguments);
-
-  // 4a. Apply the receiver to the given argArray (passing undefined for
-  // new.target).
-  __ LoadRoot(r5, 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.
-  __ bind(&no_arguments);
-  {
-    __ LoadImmP(r2, Operand::Zero());
-    __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
-  }
-
-  // 4c. The receiver is not callable, throw an appropriate TypeError.
-  __ bind(&receiver_not_callable);
-  {
-    __ StoreP(r3, MemOperand(sp, 0));
-    __ TailCallRuntime(Runtime::kThrowApplyNonFunction);
-  }
-}
-
-// static
-void Builtins::Generate_FunctionPrototypeCall(MacroAssembler* masm) {
-  // 1. Make sure we have at least one argument.
-  // r2: actual number of arguments
-  {
-    Label done;
-    __ CmpP(r2, Operand::Zero());
-    __ bne(&done, Label::kNear);
-    __ PushRoot(Heap::kUndefinedValueRootIndex);
-    __ AddP(r2, Operand(1));
-    __ bind(&done);
-  }
-
-  // r2: actual number of arguments
-  // 2. Get the callable to call (passed as receiver) from the stack.
-  __ ShiftLeftP(r4, r2, Operand(kPointerSizeLog2));
-  __ LoadP(r3, MemOperand(sp, r4));
-
-  // 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.
-  // r2: actual number of arguments
-  // r3: callable
-  {
-    Label loop;
-    // Calculate the copy start address (destination). Copy end address is sp.
-    __ AddP(r4, sp, r4);
-
-    __ bind(&loop);
-    __ LoadP(ip, MemOperand(r4, -kPointerSize));
-    __ StoreP(ip, MemOperand(r4));
-    __ SubP(r4, Operand(kPointerSize));
-    __ CmpP(r4, sp);
-    __ bne(&loop);
-    // Adjust the actual number of arguments and remove the top element
-    // (which is a copy of the last argument).
-    __ SubP(r2, Operand(1));
-    __ pop();
-  }
-
-  // 4. Call the callable.
-  __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
-}
-
-void Builtins::Generate_ReflectApply(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2     : argc
-  //  -- sp[0]  : argumentsList
-  //  -- sp[4]  : thisArgument
-  //  -- sp[8]  : target
-  //  -- sp[12] : receiver
-  // -----------------------------------
-
-  // 1. Load target into r3 (if present), argumentsList into r2 (if present),
-  // remove all arguments from the stack (including the receiver), and push
-  // thisArgument (if present) instead.
-  {
-    Label skip;
-    Register arg_size = r4;
-    Register new_sp = r5;
-    Register scratch = r6;
-    __ ShiftLeftP(arg_size, r2, Operand(kPointerSizeLog2));
-    __ AddP(new_sp, sp, arg_size);
-    __ LoadRoot(r3, Heap::kUndefinedValueRootIndex);
-    __ LoadRR(scratch, r3);
-    __ LoadRR(r2, r3);
-    __ CmpP(arg_size, Operand(kPointerSize));
-    __ blt(&skip);
-    __ LoadP(r3, MemOperand(new_sp, 1 * -kPointerSize));  // target
-    __ beq(&skip);
-    __ LoadP(scratch, MemOperand(new_sp, 2 * -kPointerSize));  // thisArgument
-    __ CmpP(arg_size, Operand(2 * kPointerSize));
-    __ beq(&skip);
-    __ LoadP(r2, MemOperand(new_sp, 3 * -kPointerSize));  // argumentsList
-    __ bind(&skip);
-    __ LoadRR(sp, new_sp);
-    __ StoreP(scratch, MemOperand(sp, 0));
-  }
-
-  // ----------- S t a t e -------------
-  //  -- r2    : argumentsList
-  //  -- r3    : target
-  //  -- sp[0] : thisArgument
-  // -----------------------------------
-
-  // 2. Make sure the target is actually callable.
-  Label target_not_callable;
-  __ JumpIfSmi(r3, &target_not_callable);
-  __ LoadP(r6, FieldMemOperand(r3, HeapObject::kMapOffset));
-  __ LoadlB(r6, FieldMemOperand(r6, Map::kBitFieldOffset));
-  __ TestBit(r6, Map::kIsCallable);
-  __ beq(&target_not_callable);
-
-  // 3a. Apply the target to the given argumentsList (passing undefined for
-  // new.target).
-  __ LoadRoot(r5, Heap::kUndefinedValueRootIndex);
-  __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET);
-
-  // 3b. The target is not callable, throw an appropriate TypeError.
-  __ bind(&target_not_callable);
-  {
-    __ StoreP(r3, MemOperand(sp, 0));
-    __ TailCallRuntime(Runtime::kThrowApplyNonFunction);
-  }
-}
-
-void Builtins::Generate_ReflectConstruct(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2     : argc
-  //  -- sp[0]  : new.target (optional)
-  //  -- sp[4]  : argumentsList
-  //  -- sp[8]  : target
-  //  -- sp[12] : receiver
-  // -----------------------------------
-
-  // 1. Load target into r3 (if present), argumentsList into r2 (if present),
-  // new.target into r5 (if present, otherwise use target), remove all
-  // arguments from the stack (including the receiver), and push thisArgument
-  // (if present) instead.
-  {
-    Label skip;
-    Register arg_size = r4;
-    Register new_sp = r6;
-    __ ShiftLeftP(arg_size, r2, Operand(kPointerSizeLog2));
-    __ AddP(new_sp, sp, arg_size);
-    __ LoadRoot(r3, Heap::kUndefinedValueRootIndex);
-    __ LoadRR(r2, r3);
-    __ LoadRR(r5, r3);
-    __ StoreP(r3, MemOperand(new_sp, 0));  // receiver (undefined)
-    __ CmpP(arg_size, Operand(kPointerSize));
-    __ blt(&skip);
-    __ LoadP(r3, MemOperand(new_sp, 1 * -kPointerSize));  // target
-    __ LoadRR(r5, r3);  // new.target defaults to target
-    __ beq(&skip);
-    __ LoadP(r2, MemOperand(new_sp, 2 * -kPointerSize));  // argumentsList
-    __ CmpP(arg_size, Operand(2 * kPointerSize));
-    __ beq(&skip);
-    __ LoadP(r5, MemOperand(new_sp, 3 * -kPointerSize));  // new.target
-    __ bind(&skip);
-    __ LoadRR(sp, new_sp);
-  }
-
-  // ----------- S t a t e -------------
-  //  -- r2    : argumentsList
-  //  -- r5    : new.target
-  //  -- r3    : target
-  //  -- sp[0] : receiver (undefined)
-  // -----------------------------------
-
-  // 2. Make sure the target is actually a constructor.
-  Label target_not_constructor;
-  __ JumpIfSmi(r3, &target_not_constructor);
-  __ LoadP(r6, FieldMemOperand(r3, HeapObject::kMapOffset));
-  __ LoadlB(r6, FieldMemOperand(r6, Map::kBitFieldOffset));
-  __ TestBit(r6, Map::kIsConstructor);
-  __ beq(&target_not_constructor);
-
-  // 3. Make sure the target is actually a constructor.
-  Label new_target_not_constructor;
-  __ JumpIfSmi(r5, &new_target_not_constructor);
-  __ LoadP(r6, FieldMemOperand(r5, HeapObject::kMapOffset));
-  __ LoadlB(r6, FieldMemOperand(r6, Map::kBitFieldOffset));
-  __ TestBit(r6, Map::kIsConstructor);
-  __ beq(&new_target_not_constructor);
-
-  // 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);
-  {
-    __ StoreP(r3, MemOperand(sp, 0));
-    __ TailCallRuntime(Runtime::kThrowCalledNonCallable);
-  }
-
-  // 4c. The new.target is not a constructor, throw an appropriate TypeError.
-  __ bind(&new_target_not_constructor);
-  {
-    __ StoreP(r5, MemOperand(sp, 0));
-    __ TailCallRuntime(Runtime::kThrowCalledNonCallable);
-  }
-}
-
-static void ArgumentAdaptorStackCheck(MacroAssembler* masm,
-                                      Label* stack_overflow) {
-  // ----------- S t a t e -------------
-  //  -- r2 : actual number of arguments
-  //  -- r3 : function (passed through to callee)
-  //  -- r4 : expected number of arguments
-  //  -- r5 : new target (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.
-  __ LoadRoot(r7, Heap::kRealStackLimitRootIndex);
-  // Make r7 the space we have left. The stack might already be overflowed
-  // here which will cause r7 to become negative.
-  __ SubP(r7, sp, r7);
-  // Check if the arguments will overflow the stack.
-  __ ShiftLeftP(r0, r4, Operand(kPointerSizeLog2));
-  __ CmpP(r7, r0);
-  __ ble(stack_overflow);  // Signed comparison.
-}
-
-static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) {
-  __ SmiTag(r2);
-  __ LoadSmiLiteral(r6, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
-  // Stack updated as such:
-  //    old SP --->
-  //                 R14 Return Addr
-  //                 Old FP                     <--- New FP
-  //                 Argument Adapter SMI
-  //                 Function
-  //                 ArgC as SMI                <--- New SP
-  __ lay(sp, MemOperand(sp, -5 * kPointerSize));
-
-  // Cleanse the top nibble of 31-bit pointers.
-  __ CleanseP(r14);
-  __ StoreP(r14, MemOperand(sp, 4 * kPointerSize));
-  __ StoreP(fp, MemOperand(sp, 3 * kPointerSize));
-  __ StoreP(r6, MemOperand(sp, 2 * kPointerSize));
-  __ StoreP(r3, MemOperand(sp, 1 * kPointerSize));
-  __ StoreP(r2, MemOperand(sp, 0 * kPointerSize));
-  __ la(fp, MemOperand(sp, StandardFrameConstants::kFixedFrameSizeFromFp +
-                               kPointerSize));
-}
-
-static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2 : result being passed through
-  // -----------------------------------
-  // Get the number of arguments passed (as a smi), tear down the frame and
-  // then tear down the parameters.
-  __ LoadP(r3, MemOperand(fp, -(StandardFrameConstants::kFixedFrameSizeFromFp +
-                                kPointerSize)));
-  int stack_adjustment = kPointerSize;  // adjust for receiver
-  __ LeaveFrame(StackFrame::ARGUMENTS_ADAPTOR, stack_adjustment);
-  __ SmiToPtrArrayOffset(r3, r3);
-  __ lay(sp, MemOperand(sp, r3));
-}
-
-// static
-void Builtins::Generate_Apply(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2    : argumentsList
-  //  -- r3    : target
-  //  -- r5    : new.target (checked to be constructor or undefined)
-  //  -- sp[0] : thisArgument
-  // -----------------------------------
-
-  // Create the list of arguments from the array-like argumentsList.
-  {
-    Label create_arguments, create_array, create_runtime, done_create;
-    __ JumpIfSmi(r2, &create_runtime);
-
-    // Load the map of argumentsList into r4.
-    __ LoadP(r4, FieldMemOperand(r2, HeapObject::kMapOffset));
-
-    // Load native context into r6.
-    __ LoadP(r6, NativeContextMemOperand());
-
-    // Check if argumentsList is an (unmodified) arguments object.
-    __ LoadP(ip, ContextMemOperand(r6, Context::SLOPPY_ARGUMENTS_MAP_INDEX));
-    __ CmpP(ip, r4);
-    __ beq(&create_arguments);
-    __ LoadP(ip, ContextMemOperand(r6, Context::STRICT_ARGUMENTS_MAP_INDEX));
-    __ CmpP(ip, r4);
-    __ beq(&create_arguments);
-
-    // Check if argumentsList is a fast JSArray.
-    __ CompareInstanceType(r4, ip, JS_ARRAY_TYPE);
-    __ beq(&create_array);
-
-    // Ask the runtime to create the list (actually a FixedArray).
-    __ bind(&create_runtime);
-    {
-      FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
-      __ Push(r3, r5, r2);
-      __ CallRuntime(Runtime::kCreateListFromArrayLike);
-      __ Pop(r3, r5);
-      __ LoadP(r4, FieldMemOperand(r2, FixedArray::kLengthOffset));
-      __ SmiUntag(r4);
-    }
-    __ b(&done_create);
-
-    // Try to create the list from an arguments object.
-    __ bind(&create_arguments);
-    __ LoadP(r4, FieldMemOperand(r2, JSArgumentsObject::kLengthOffset));
-    __ LoadP(r6, FieldMemOperand(r2, JSObject::kElementsOffset));
-    __ LoadP(ip, FieldMemOperand(r6, FixedArray::kLengthOffset));
-    __ CmpP(r4, ip);
-    __ bne(&create_runtime);
-    __ SmiUntag(r4);
-    __ LoadRR(r2, r6);
-    __ b(&done_create);
-
-    // Try to create the list from a JSArray object.
-    __ bind(&create_array);
-    __ LoadlB(r4, FieldMemOperand(r4, Map::kBitField2Offset));
-    __ DecodeField<Map::ElementsKindBits>(r4);
-    STATIC_ASSERT(FAST_SMI_ELEMENTS == 0);
-    STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1);
-    STATIC_ASSERT(FAST_ELEMENTS == 2);
-    __ CmpP(r4, Operand(FAST_ELEMENTS));
-    __ bgt(&create_runtime);
-    __ CmpP(r4, Operand(FAST_HOLEY_SMI_ELEMENTS));
-    __ beq(&create_runtime);
-    __ LoadP(r4, FieldMemOperand(r2, JSArray::kLengthOffset));
-    __ LoadP(r2, FieldMemOperand(r2, JSArray::kElementsOffset));
-    __ SmiUntag(r4);
-
-    __ 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(ip, Heap::kRealStackLimitRootIndex);
-    // Make ip the space we have left. The stack might already be overflowed
-    // here which will cause ip to become negative.
-    __ SubP(ip, sp, ip);
-    // Check if the arguments will overflow the stack.
-    __ ShiftLeftP(r0, r4, Operand(kPointerSizeLog2));
-    __ CmpP(ip, r0);  // Signed comparison.
-    __ bgt(&done);
-    __ TailCallRuntime(Runtime::kThrowStackOverflow);
-    __ bind(&done);
-  }
-
-  // ----------- S t a t e -------------
-  //  -- r3    : target
-  //  -- r2    : args (a FixedArray built from argumentsList)
-  //  -- r4    : len (number of elements to push from args)
-  //  -- r5    : new.target (checked to be constructor or undefined)
-  //  -- sp[0] : thisArgument
-  // -----------------------------------
-
-  // Push arguments onto the stack (thisArgument is already on the stack).
-  {
-    Label loop, no_args;
-    __ CmpP(r4, Operand::Zero());
-    __ beq(&no_args);
-    __ AddP(r2, r2,
-            Operand(FixedArray::kHeaderSize - kHeapObjectTag - kPointerSize));
-    __ LoadRR(r1, r4);
-    __ bind(&loop);
-    __ LoadP(r0, MemOperand(r2, kPointerSize));
-    __ la(r2, MemOperand(r2, kPointerSize));
-    __ push(r0);
-    __ BranchOnCount(r1, &loop);
-    __ bind(&no_args);
-    __ LoadRR(r2, r4);
-  }
-
-  // Dispatch to Call or Construct depending on whether new.target is undefined.
-  {
-    __ CompareRoot(r5, Heap::kUndefinedValueRootIndex);
-    __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET, eq);
-    __ 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   <- sp (f()'s caller pc is not on the stack yet!)
-// ----------------------
-//
-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());
-  __ mov(scratch1, Operand(is_tail_call_elimination_enabled));
-  __ LoadlB(scratch1, MemOperand(scratch1));
-  __ CmpP(scratch1, Operand::Zero());
-  __ beq(&done);
-
-  // Drop possible interpreter handler/stub frame.
-  {
-    Label no_interpreter_frame;
-    __ LoadP(scratch3,
-             MemOperand(fp, CommonFrameConstants::kContextOrFrameTypeOffset));
-    __ CmpSmiLiteral(scratch3, Smi::FromInt(StackFrame::STUB), r0);
-    __ bne(&no_interpreter_frame);
-    __ LoadP(fp, MemOperand(fp, 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;
-  __ LoadP(scratch2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
-  __ LoadP(
-      scratch3,
-      MemOperand(scratch2, CommonFrameConstants::kContextOrFrameTypeOffset));
-  __ CmpSmiLiteral(scratch3, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR), r0);
-  __ bne(&no_arguments_adaptor);
-
-  // Drop current frame and load arguments count from arguments adaptor frame.
-  __ LoadRR(fp, scratch2);
-  __ LoadP(caller_args_count_reg,
-           MemOperand(fp, ArgumentsAdaptorFrameConstants::kLengthOffset));
-  __ SmiUntag(caller_args_count_reg);
-  __ b(&formal_parameter_count_loaded);
-
-  __ bind(&no_arguments_adaptor);
-  // Load caller's formal parameter count
-  __ LoadP(scratch1,
-           MemOperand(fp, ArgumentsAdaptorFrameConstants::kFunctionOffset));
-  __ LoadP(scratch1,
-           FieldMemOperand(scratch1, JSFunction::kSharedFunctionInfoOffset));
-  __ LoadW(caller_args_count_reg,
-           FieldMemOperand(scratch1,
-                           SharedFunctionInfo::kFormalParameterCountOffset));
-#if !V8_TARGET_ARCH_S390X
-  __ SmiUntag(caller_args_count_reg);
-#endif
-
-  __ bind(&formal_parameter_count_loaded);
-
-  ParameterCount callee_args_count(args_reg);
-  __ PrepareForTailCall(callee_args_count, caller_args_count_reg, scratch2,
-                        scratch3);
-  __ bind(&done);
-}
-}  // namespace
-
-// static
-void Builtins::Generate_CallFunction(MacroAssembler* masm,
-                                     ConvertReceiverMode mode,
-                                     TailCallMode tail_call_mode) {
-  // ----------- S t a t e -------------
-  //  -- r2 : the number of arguments (not including the receiver)
-  //  -- r3 : the function to call (checked to be a JSFunction)
-  // -----------------------------------
-  __ AssertFunction(r3);
-
-  // See ES6 section 9.2.1 [[Call]] ( thisArgument, argumentsList)
-  // Check that the function is not a "classConstructor".
-  Label class_constructor;
-  __ LoadP(r4, FieldMemOperand(r3, JSFunction::kSharedFunctionInfoOffset));
-  __ LoadlW(r5, FieldMemOperand(r4, SharedFunctionInfo::kCompilerHintsOffset));
-  __ TestBitMask(r5, SharedFunctionInfo::kClassConstructorBits, r0);
-  __ bne(&class_constructor);
-
-  // 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.
-  __ LoadP(cp, FieldMemOperand(r3, JSFunction::kContextOffset));
-  // We need to convert the receiver for non-native sloppy mode functions.
-  Label done_convert;
-  __ AndP(r0, r5, Operand((1 << SharedFunctionInfo::kStrictModeBit) |
-                          (1 << SharedFunctionInfo::kNativeBit)));
-  __ bne(&done_convert);
-  {
-    // ----------- S t a t e -------------
-    //  -- r2 : the number of arguments (not including the receiver)
-    //  -- r3 : the function to call (checked to be a JSFunction)
-    //  -- r4 : the shared function info.
-    //  -- cp : the function context.
-    // -----------------------------------
-
-    if (mode == ConvertReceiverMode::kNullOrUndefined) {
-      // Patch receiver to global proxy.
-      __ LoadGlobalProxy(r5);
-    } else {
-      Label convert_to_object, convert_receiver;
-      __ ShiftLeftP(r5, r2, Operand(kPointerSizeLog2));
-      __ LoadP(r5, MemOperand(sp, r5));
-      __ JumpIfSmi(r5, &convert_to_object);
-      STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE);
-      __ CompareObjectType(r5, r6, r6, FIRST_JS_RECEIVER_TYPE);
-      __ bge(&done_convert);
-      if (mode != ConvertReceiverMode::kNotNullOrUndefined) {
-        Label convert_global_proxy;
-        __ JumpIfRoot(r5, Heap::kUndefinedValueRootIndex,
-                      &convert_global_proxy);
-        __ JumpIfNotRoot(r5, Heap::kNullValueRootIndex, &convert_to_object);
-        __ bind(&convert_global_proxy);
-        {
-          // Patch receiver to global proxy.
-          __ LoadGlobalProxy(r5);
-        }
-        __ b(&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?)
-        FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
-        __ SmiTag(r2);
-        __ Push(r2, r3);
-        __ LoadRR(r2, r5);
-        ToObjectStub stub(masm->isolate());
-        __ CallStub(&stub);
-        __ LoadRR(r5, r2);
-        __ Pop(r2, r3);
-        __ SmiUntag(r2);
-      }
-      __ LoadP(r4, FieldMemOperand(r3, JSFunction::kSharedFunctionInfoOffset));
-      __ bind(&convert_receiver);
-    }
-    __ ShiftLeftP(r6, r2, Operand(kPointerSizeLog2));
-    __ StoreP(r5, MemOperand(sp, r6));
-  }
-  __ bind(&done_convert);
-
-  // ----------- S t a t e -------------
-  //  -- r2 : the number of arguments (not including the receiver)
-  //  -- r3 : the function to call (checked to be a JSFunction)
-  //  -- r4 : the shared function info.
-  //  -- cp : the function context.
-  // -----------------------------------
-
-  if (tail_call_mode == TailCallMode::kAllow) {
-    PrepareForTailCall(masm, r2, r5, r6, r7);
-  }
-
-  __ LoadW(
-      r4, FieldMemOperand(r4, SharedFunctionInfo::kFormalParameterCountOffset));
-#if !V8_TARGET_ARCH_S390X
-  __ SmiUntag(r4);
-#endif
-  ParameterCount actual(r2);
-  ParameterCount expected(r4);
-  __ InvokeFunctionCode(r3, no_reg, expected, actual, JUMP_FUNCTION,
-                        CheckDebugStepCallWrapper());
-
-  // The function is a "classConstructor", need to raise an exception.
-  __ bind(&class_constructor);
-  {
-    FrameAndConstantPoolScope frame(masm, StackFrame::INTERNAL);
-    __ push(r3);
-    __ CallRuntime(Runtime::kThrowConstructorNonCallableError);
-  }
-}
-
-namespace {
-
-void Generate_PushBoundArguments(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2 : the number of arguments (not including the receiver)
-  //  -- r3 : target (checked to be a JSBoundFunction)
-  //  -- r5 : new.target (only in case of [[Construct]])
-  // -----------------------------------
-
-  // Load [[BoundArguments]] into r4 and length of that into r6.
-  Label no_bound_arguments;
-  __ LoadP(r4, FieldMemOperand(r3, JSBoundFunction::kBoundArgumentsOffset));
-  __ LoadP(r6, FieldMemOperand(r4, FixedArray::kLengthOffset));
-  __ SmiUntag(r6);
-  __ LoadAndTestP(r6, r6);
-  __ beq(&no_bound_arguments);
-  {
-    // ----------- S t a t e -------------
-    //  -- r2 : the number of arguments (not including the receiver)
-    //  -- r3 : target (checked to be a JSBoundFunction)
-    //  -- r4 : the [[BoundArguments]] (implemented as FixedArray)
-    //  -- r5 : new.target (only in case of [[Construct]])
-    //  -- r6 : the number of [[BoundArguments]]
-    // -----------------------------------
-
-    // Reserve stack space for the [[BoundArguments]].
-    {
-      Label done;
-      __ LoadRR(r8, sp);  // preserve previous stack pointer
-      __ ShiftLeftP(r9, r6, Operand(kPointerSizeLog2));
-      __ SubP(sp, sp, r9);
-      // 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(sp, Heap::kRealStackLimitRootIndex);
-      __ bgt(&done);  // Signed comparison.
-      // Restore the stack pointer.
-      __ LoadRR(sp, r8);
-      {
-        FrameScope scope(masm, StackFrame::MANUAL);
-        __ EnterFrame(StackFrame::INTERNAL);
-        __ CallRuntime(Runtime::kThrowStackOverflow);
-      }
-      __ bind(&done);
-    }
-
-    // Relocate arguments down the stack.
-    //  -- r2 : the number of arguments (not including the receiver)
-    //  -- r8 : the previous stack pointer
-    //  -- r9: the size of the [[BoundArguments]]
-    {
-      Label skip, loop;
-      __ LoadImmP(r7, Operand::Zero());
-      __ CmpP(r2, Operand::Zero());
-      __ beq(&skip);
-      __ LoadRR(r1, r2);
-      __ bind(&loop);
-      __ LoadP(r0, MemOperand(r8, r7));
-      __ StoreP(r0, MemOperand(sp, r7));
-      __ AddP(r7, r7, Operand(kPointerSize));
-      __ BranchOnCount(r1, &loop);
-      __ bind(&skip);
-    }
-
-    // Copy [[BoundArguments]] to the stack (below the arguments).
-    {
-      Label loop;
-      __ AddP(r4, r4, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
-      __ AddP(r4, r4, r9);
-      __ LoadRR(r1, r6);
-      __ bind(&loop);
-      __ LoadP(r0, MemOperand(r4, -kPointerSize));
-      __ lay(r4, MemOperand(r4, -kPointerSize));
-      __ StoreP(r0, MemOperand(sp, r7));
-      __ AddP(r7, r7, Operand(kPointerSize));
-      __ BranchOnCount(r1, &loop);
-      __ AddP(r2, r2, r6);
-    }
-  }
-  __ bind(&no_bound_arguments);
-}
-
-}  // namespace
-
-// static
-void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
-                                              TailCallMode tail_call_mode) {
-  // ----------- S t a t e -------------
-  //  -- r2 : the number of arguments (not including the receiver)
-  //  -- r3 : the function to call (checked to be a JSBoundFunction)
-  // -----------------------------------
-  __ AssertBoundFunction(r3);
-
-  if (tail_call_mode == TailCallMode::kAllow) {
-    PrepareForTailCall(masm, r2, r5, r6, r7);
-  }
-
-  // Patch the receiver to [[BoundThis]].
-  __ LoadP(ip, FieldMemOperand(r3, JSBoundFunction::kBoundThisOffset));
-  __ ShiftLeftP(r1, r2, Operand(kPointerSizeLog2));
-  __ StoreP(ip, MemOperand(sp, r1));
-
-  // Push the [[BoundArguments]] onto the stack.
-  Generate_PushBoundArguments(masm);
-
-  // Call the [[BoundTargetFunction]] via the Call builtin.
-  __ LoadP(r3,
-           FieldMemOperand(r3, JSBoundFunction::kBoundTargetFunctionOffset));
-  __ mov(ip, Operand(ExternalReference(Builtins::kCall_ReceiverIsAny,
-                                       masm->isolate())));
-  __ LoadP(ip, MemOperand(ip));
-  __ AddP(ip, ip, Operand(Code::kHeaderSize - kHeapObjectTag));
-  __ JumpToJSEntry(ip);
-}
-
-// static
-void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
-                             TailCallMode tail_call_mode) {
-  // ----------- S t a t e -------------
-  //  -- r2 : the number of arguments (not including the receiver)
-  //  -- r3 : the target to call (can be any Object).
-  // -----------------------------------
-
-  Label non_callable, non_function, non_smi;
-  __ JumpIfSmi(r3, &non_callable);
-  __ bind(&non_smi);
-  __ CompareObjectType(r3, r6, r7, JS_FUNCTION_TYPE);
-  __ Jump(masm->isolate()->builtins()->CallFunction(mode, tail_call_mode),
-          RelocInfo::CODE_TARGET, eq);
-  __ CmpP(r7, Operand(JS_BOUND_FUNCTION_TYPE));
-  __ Jump(masm->isolate()->builtins()->CallBoundFunction(tail_call_mode),
-          RelocInfo::CODE_TARGET, eq);
-
-  // Check if target has a [[Call]] internal method.
-  __ LoadlB(r6, FieldMemOperand(r6, Map::kBitFieldOffset));
-  __ TestBit(r6, Map::kIsCallable);
-  __ beq(&non_callable);
-
-  __ CmpP(r7, Operand(JS_PROXY_TYPE));
-  __ bne(&non_function);
-
-  // 0. Prepare for tail call if necessary.
-  if (tail_call_mode == TailCallMode::kAllow) {
-    PrepareForTailCall(masm, r2, r5, r6, r7);
-  }
-
-  // 1. Runtime fallback for Proxy [[Call]].
-  __ Push(r3);
-  // Increase the arguments size to include the pushed function and the
-  // existing receiver on the stack.
-  __ AddP(r2, r2, Operand(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 the (original) target.
-  __ ShiftLeftP(r7, r2, Operand(kPointerSizeLog2));
-  __ StoreP(r3, MemOperand(sp, r7));
-  // Let the "call_as_function_delegate" take care of the rest.
-  __ LoadNativeContextSlot(Context::CALL_AS_FUNCTION_DELEGATE_INDEX, r3);
-  __ Jump(masm->isolate()->builtins()->CallFunction(
-              ConvertReceiverMode::kNotNullOrUndefined, tail_call_mode),
-          RelocInfo::CODE_TARGET);
-
-  // 3. Call to something that is not callable.
-  __ bind(&non_callable);
-  {
-    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
-    __ Push(r3);
-    __ CallRuntime(Runtime::kThrowCalledNonCallable);
-  }
-}
-
-// static
-void Builtins::Generate_ConstructFunction(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2 : the number of arguments (not including the receiver)
-  //  -- r3 : the constructor to call (checked to be a JSFunction)
-  //  -- r5 : the new target (checked to be a constructor)
-  // -----------------------------------
-  __ AssertFunction(r3);
-
-  // Calling convention for function specific ConstructStubs require
-  // r4 to contain either an AllocationSite or undefined.
-  __ LoadRoot(r4, Heap::kUndefinedValueRootIndex);
-
-  // Tail call to the function-specific construct stub (still in the caller
-  // context at this point).
-  __ LoadP(r6, FieldMemOperand(r3, JSFunction::kSharedFunctionInfoOffset));
-  __ LoadP(r6, FieldMemOperand(r6, SharedFunctionInfo::kConstructStubOffset));
-  __ AddP(ip, r6, Operand(Code::kHeaderSize - kHeapObjectTag));
-  __ JumpToJSEntry(ip);
-}
-
-// static
-void Builtins::Generate_ConstructBoundFunction(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2 : the number of arguments (not including the receiver)
-  //  -- r3 : the function to call (checked to be a JSBoundFunction)
-  //  -- r5 : the new target (checked to be a constructor)
-  // -----------------------------------
-  __ AssertBoundFunction(r3);
-
-  // Push the [[BoundArguments]] onto the stack.
-  Generate_PushBoundArguments(masm);
-
-  // Patch new.target to [[BoundTargetFunction]] if new.target equals target.
-  Label skip;
-  __ CmpP(r3, r5);
-  __ bne(&skip);
-  __ LoadP(r5,
-           FieldMemOperand(r3, JSBoundFunction::kBoundTargetFunctionOffset));
-  __ bind(&skip);
-
-  // Construct the [[BoundTargetFunction]] via the Construct builtin.
-  __ LoadP(r3,
-           FieldMemOperand(r3, JSBoundFunction::kBoundTargetFunctionOffset));
-  __ mov(ip, Operand(ExternalReference(Builtins::kConstruct, masm->isolate())));
-  __ LoadP(ip, MemOperand(ip));
-  __ AddP(ip, ip, Operand(Code::kHeaderSize - kHeapObjectTag));
-  __ JumpToJSEntry(ip);
-}
-
-// static
-void Builtins::Generate_ConstructProxy(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2 : the number of arguments (not including the receiver)
-  //  -- r3 : the constructor to call (checked to be a JSProxy)
-  //  -- r5 : 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]].
-  __ Push(r3, r5);
-  // Include the pushed new_target, constructor and the receiver.
-  __ AddP(r2, r2, Operand(3));
-  // Tail-call to the runtime.
-  __ JumpToExternalReference(
-      ExternalReference(Runtime::kJSProxyConstruct, masm->isolate()));
-}
-
-// static
-void Builtins::Generate_Construct(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r2 : the number of arguments (not including the receiver)
-  //  -- r3 : the constructor to call (can be any Object)
-  //  -- r5 : the new target (either the same as the constructor or
-  //          the JSFunction on which new was invoked initially)
-  // -----------------------------------
-
-  // Check if target is a Smi.
-  Label non_constructor;
-  __ JumpIfSmi(r3, &non_constructor);
-
-  // Dispatch based on instance type.
-  __ CompareObjectType(r3, r6, r7, JS_FUNCTION_TYPE);
-  __ Jump(masm->isolate()->builtins()->ConstructFunction(),
-          RelocInfo::CODE_TARGET, eq);
-
-  // Check if target has a [[Construct]] internal method.
-  __ LoadlB(r4, FieldMemOperand(r6, Map::kBitFieldOffset));
-  __ TestBit(r4, Map::kIsConstructor);
-  __ beq(&non_constructor);
-
-  // Only dispatch to bound functions after checking whether they are
-  // constructors.
-  __ CmpP(r7, Operand(JS_BOUND_FUNCTION_TYPE));
-  __ Jump(masm->isolate()->builtins()->ConstructBoundFunction(),
-          RelocInfo::CODE_TARGET, eq);
-
-  // Only dispatch to proxies after checking whether they are constructors.
-  __ CmpP(r7, Operand(JS_PROXY_TYPE));
-  __ Jump(masm->isolate()->builtins()->ConstructProxy(), RelocInfo::CODE_TARGET,
-          eq);
-
-  // Called Construct on an exotic Object with a [[Construct]] internal method.
-  {
-    // Overwrite the original receiver with the (original) target.
-    __ ShiftLeftP(r7, r2, Operand(kPointerSizeLog2));
-    __ StoreP(r3, MemOperand(sp, r7));
-    // Let the "call_as_constructor_delegate" take care of the rest.
-    __ LoadNativeContextSlot(Context::CALL_AS_CONSTRUCTOR_DELEGATE_INDEX, r3);
-    __ 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 Builtins::Generate_AllocateInNewSpace(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r3 : requested object size (untagged)
-  //  -- lr : return address
-  // -----------------------------------
-  __ SmiTag(r3);
-  __ Push(r3);
-  __ LoadSmiLiteral(cp, Smi::FromInt(0));
-  __ TailCallRuntime(Runtime::kAllocateInNewSpace);
-}
-
-// static
-void Builtins::Generate_AllocateInOldSpace(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- r3 : requested object size (untagged)
-  //  -- lr : return address
-  // -----------------------------------
-  __ SmiTag(r3);
-  __ LoadSmiLiteral(r4, Smi::FromInt(AllocateTargetSpace::encode(OLD_SPACE)));
-  __ Push(r3, r4);
-  __ LoadSmiLiteral(cp, Smi::FromInt(0));
-  __ TailCallRuntime(Runtime::kAllocateInTargetSpace);
-}
-
-// static
-void Builtins::Generate_StringToNumber(MacroAssembler* masm) {
-  // The StringToNumber stub takes one argument in r2.
-  __ AssertString(r2);
-
-  // Check if string has a cached array index.
-  Label runtime;
-  __ LoadlW(r4, FieldMemOperand(r2, String::kHashFieldOffset));
-  __ And(r0, r4, Operand(String::kContainsCachedArrayIndexMask));
-  __ bne(&runtime);
-  __ IndexFromHash(r4, r2);
-  __ Ret();
-
-  __ bind(&runtime);
-  {
-    FrameScope frame(masm, StackFrame::INTERNAL);
-    // Push argument.
-    __ push(r2);
-    // 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 r2.
-  STATIC_ASSERT(kSmiTag == 0);
-  __ TestIfSmi(r2);
-  __ Ret(eq);
-
-  __ CompareObjectType(r2, r3, r3, HEAP_NUMBER_TYPE);
-  // r2: receiver
-  // r3: receiver instance type
-  __ Ret(eq);
-
-  __ Jump(masm->isolate()->builtins()->NonNumberToNumber(),
-          RelocInfo::CODE_TARGET);
-}
-
-// static
-void Builtins::Generate_NonNumberToNumber(MacroAssembler* masm) {
-  // The NonNumberToNumber stub takes one argument in r2.
-  __ AssertNotNumber(r2);
-
-  __ CompareObjectType(r2, r3, r3, FIRST_NONSTRING_TYPE);
-  // r2: receiver
-  // r3: receiver instance type
-  __ Jump(masm->isolate()->builtins()->StringToNumber(), RelocInfo::CODE_TARGET,
-          lt);
-
-  Label not_oddball;
-  __ CmpP(r3, Operand(ODDBALL_TYPE));
-  __ bne(&not_oddball);
-  __ LoadP(r2, FieldMemOperand(r2, Oddball::kToNumberOffset));
-  __ Ret();
-  __ bind(&not_oddball);
-
-  {
-    FrameScope frame(masm, StackFrame::INTERNAL);
-    // Push argument.
-    __ push(r2);
-    // 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 -------------
-  //  -- r2 : actual number of arguments
-  //  -- r3 : function (passed through to callee)
-  //  -- r4 : expected number of arguments
-  //  -- r5 : new target (passed through to callee)
-  // -----------------------------------
-
-  Label invoke, dont_adapt_arguments, stack_overflow;
-
-  Label enough, too_few;
-  __ LoadP(ip, FieldMemOperand(r3, JSFunction::kCodeEntryOffset));
-  __ CmpP(r2, r4);
-  __ blt(&too_few);
-  __ CmpP(r4, Operand(SharedFunctionInfo::kDontAdaptArgumentsSentinel));
-  __ beq(&dont_adapt_arguments);
-
-  {  // Enough parameters: actual >= expected
-    __ bind(&enough);
-    EnterArgumentsAdaptorFrame(masm);
-    ArgumentAdaptorStackCheck(masm, &stack_overflow);
-
-    // Calculate copy start address into r2 and copy end address into r6.
-    // r2: actual number of arguments as a smi
-    // r3: function
-    // r4: expected number of arguments
-    // r5: new target (passed through to callee)
-    // ip: code entry to call
-    __ SmiToPtrArrayOffset(r2, r2);
-    __ AddP(r2, fp);
-    // adjust for return address and receiver
-    __ AddP(r2, r2, Operand(2 * kPointerSize));
-    __ ShiftLeftP(r6, r4, Operand(kPointerSizeLog2));
-    __ SubP(r6, r2, r6);
-
-    // Copy the arguments (including the receiver) to the new stack frame.
-    // r2: copy start address
-    // r3: function
-    // r4: expected number of arguments
-    // r5: new target (passed through to callee)
-    // r6: copy end address
-    // ip: code entry to call
-
-    Label copy;
-    __ bind(&copy);
-    __ LoadP(r0, MemOperand(r2, 0));
-    __ push(r0);
-    __ CmpP(r2, r6);  // Compare before moving to next argument.
-    __ lay(r2, MemOperand(r2, -kPointerSize));
-    __ bne(&copy);
-
-    __ b(&invoke);
-  }
-
-  {  // Too few parameters: Actual < expected
-    __ bind(&too_few);
-
-    EnterArgumentsAdaptorFrame(masm);
-    ArgumentAdaptorStackCheck(masm, &stack_overflow);
-
-    // Calculate copy start address into r0 and copy end address is fp.
-    // r2: actual number of arguments as a smi
-    // r3: function
-    // r4: expected number of arguments
-    // r5: new target (passed through to callee)
-    // ip: code entry to call
-    __ SmiToPtrArrayOffset(r2, r2);
-    __ lay(r2, MemOperand(r2, fp));
-
-    // Copy the arguments (including the receiver) to the new stack frame.
-    // r2: copy start address
-    // r3: function
-    // r4: expected number of arguments
-    // r5: new target (passed through to callee)
-    // ip: code entry to call
-    Label copy;
-    __ bind(&copy);
-    // Adjust load for return address and receiver.
-    __ LoadP(r0, MemOperand(r2, 2 * kPointerSize));
-    __ push(r0);
-    __ CmpP(r2, fp);  // Compare before moving to next argument.
-    __ lay(r2, MemOperand(r2, -kPointerSize));
-    __ bne(&copy);
-
-    // Fill the remaining expected arguments with undefined.
-    // r3: function
-    // r4: expected number of argumentus
-    // ip: code entry to call
-    __ LoadRoot(r0, Heap::kUndefinedValueRootIndex);
-    __ ShiftLeftP(r6, r4, Operand(kPointerSizeLog2));
-    __ SubP(r6, fp, r6);
-    // Adjust for frame.
-    __ SubP(r6, r6, Operand(StandardFrameConstants::kFixedFrameSizeFromFp +
-                            2 * kPointerSize));
-
-    Label fill;
-    __ bind(&fill);
-    __ push(r0);
-    __ CmpP(sp, r6);
-    __ bne(&fill);
-  }
-
-  // Call the entry point.
-  __ bind(&invoke);
-  __ LoadRR(r2, r4);
-  // r2 : expected number of arguments
-  // r3 : function (passed through to callee)
-  // r5 : new target (passed through to callee)
-  __ CallJSEntry(ip);
-
-  // Store offset of return address for deoptimizer.
-  masm->isolate()->heap()->SetArgumentsAdaptorDeoptPCOffset(masm->pc_offset());
-
-  // Exit frame and return.
-  LeaveArgumentsAdaptorFrame(masm);
-  __ Ret();
-
-  // -------------------------------------------
-  // Dont adapt arguments.
-  // -------------------------------------------
-  __ bind(&dont_adapt_arguments);
-  __ JumpToJSEntry(ip);
-
-  __ bind(&stack_overflow);
-  {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ CallRuntime(Runtime::kThrowStackOverflow);
-    __ bkpt(0);
-  }
-}
-
-#undef __
-
-}  // namespace internal
-}  // namespace v8
-
-#endif  // V8_TARGET_ARCH_S390