[es6] Remove the %DefaultConstructorCallSuper intrinsic.

src/full-codegen/x64/full-codegen-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/ast/scopes.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 3585 matching lines @@
   // Call the target.
   __ Set(rax, argc);
   __ Call(isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
   // Restore context register.
   __ movp(rsi, Operand(rbp, StandardFrameConstants::kContextOffset));
   // Discard the function left on TOS.
   context()->DropAndPlug(1, rax);
 }
 
 
-void FullCodeGenerator::EmitDefaultConstructorCallSuper(CallRuntime* expr) {
-  ZoneList<Expression*>* args = expr->arguments();
-  DCHECK(args->length() == 2);
-
-  // Evaluate new.target and super constructor.
-  VisitForStackValue(args->at(0));
-  VisitForStackValue(args->at(1));
-
-  // Call the construct call builtin that handles allocation and
-  // constructor invocation.
-  SetConstructCallPosition(expr);
-
-  // Check if the calling frame is an arguments adaptor frame.
-  Label adaptor_frame, args_set_up, runtime;
-  __ movp(rdx, Operand(rbp, StandardFrameConstants::kCallerFPOffset));
-  __ movp(rbx, Operand(rdx, StandardFrameConstants::kContextOffset));
-  __ Cmp(rbx, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
-  __ j(equal, &adaptor_frame);
-  // default constructor has no arguments, so no adaptor frame means no args.
-  __ movp(rax, Immediate(0));
-  __ jmp(&args_set_up);
-
-  // Copy arguments from adaptor frame.
-  {
-    __ bind(&adaptor_frame);
-    __ movp(rbx, Operand(rdx, ArgumentsAdaptorFrameConstants::kLengthOffset));
-    __ SmiToInteger64(rbx, rbx);
-
-    __ movp(rax, rbx);
-    __ leap(rdx, Operand(rdx, rbx, times_pointer_size,
-                         StandardFrameConstants::kCallerSPOffset));
-    Label loop;
-    __ bind(&loop);
-    __ Push(Operand(rdx, -1 * kPointerSize));
-    __ subp(rdx, Immediate(kPointerSize));
-    __ decp(rbx);
-    __ j(not_zero, &loop);
-  }
-
-  __ bind(&args_set_up);
-  __ movp(rdx, Operand(rsp, rax, times_pointer_size, 1 * kPointerSize));
-  __ movp(rdi, Operand(rsp, rax, times_pointer_size, 0 * kPointerSize));
-  __ Call(isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET);
-
-  // Restore context register.
-  __ movp(rsi, Operand(rbp, StandardFrameConstants::kContextOffset));
-
-  context()->DropAndPlug(1, rax);
-}
-
-
 void FullCodeGenerator::EmitHasCachedArrayIndex(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK(args->length() == 1);
 
   VisitForAccumulatorValue(args->at(0));
 
   Label materialize_true, materialize_false;
   Label* if_true = NULL;
   Label* if_false = NULL;
   Label* fall_through = NULL;
@@ skipping 1164 matching lines @@
             Assembler::target_address_at(call_target_address,
                                          unoptimized_code));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64