Rename original constructor to new target

src/x64/code-stubs-x64.cc

 // Copyright 2013 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/bootstrapper.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
 #include "src/ic/handler-compiler.h"
@@ skipping 1739 matching lines @@
 
   __ bind(&miss);
   GenerateMiss(masm);
 }
 
 
 static void CallStubInRecordCallTarget(MacroAssembler* masm, CodeStub* stub,
                                        bool is_super) {
   // rax : number of arguments to the construct function
   // rbx : feedback vector
-  // rcx : original constructor (for IsSuperConstructorCall)
+  // rcx : new target (for IsSuperConstructorCall)
   // rdx : slot in feedback vector (Smi)
   // rdi : the function to call
   FrameScope scope(masm, StackFrame::INTERNAL);
 
   // Number-of-arguments register must be smi-tagged to call out.
   __ Integer32ToSmi(rax, rax);
   __ Push(rax);
   __ Push(rdi);
   __ Integer32ToSmi(rdx, rdx);
   __ Push(rdx);
@@ skipping 14 matching lines @@
   __ SmiToInteger32(rax, rax);
 }
 
 
 static void GenerateRecordCallTarget(MacroAssembler* masm, bool is_super) {
   // Cache the called function in a feedback vector slot.  Cache states
   // are uninitialized, monomorphic (indicated by a JSFunction), and
   // megamorphic.
   // rax : number of arguments to the construct function
   // rbx : feedback vector
-  // rcx : original constructor (for IsSuperConstructorCall)
+  // rcx : new target (for IsSuperConstructorCall)
   // rdx : slot in feedback vector (Smi)
   // rdi : the function to call
   Isolate* isolate = masm->isolate();
   Label initialize, done, miss, megamorphic, not_array_function,
       done_no_smi_convert;
 
   // Load the cache state into r11.
   __ SmiToInteger32(rdx, rdx);
   __ movp(r11,
           FieldOperand(rbx, rdx, times_pointer_size, FixedArray::kHeaderSize));
@@ skipping 65 matching lines @@
   __ bind(&done);
   __ Integer32ToSmi(rdx, rdx);
 
   __ bind(&done_no_smi_convert);
 }
 
 
 void CallConstructStub::Generate(MacroAssembler* masm) {
   // rax : number of arguments
   // rbx : feedback vector
-  // rcx : original constructor (for IsSuperConstructorCall)
+  // rcx : new target (for IsSuperConstructorCall)
   // rdx : slot in feedback vector (Smi, for RecordCallTarget)
   // rdi : constructor function
 
   Label non_function;
   // Check that the constructor is not a smi.
   __ JumpIfSmi(rdi, &non_function);
   // Check that constructor is a JSFunction.
   __ CmpObjectType(rdi, JS_FUNCTION_TYPE, r11);
   __ j(not_equal, &non_function);
 
   if (RecordCallTarget()) {
     GenerateRecordCallTarget(masm, IsSuperConstructorCall());
 
     __ SmiToInteger32(rdx, rdx);
     Label feedback_register_initialized;
     // Put the AllocationSite from the feedback vector into rbx, or undefined.
     __ movp(rbx, FieldOperand(rbx, rdx, times_pointer_size,
                               FixedArray::kHeaderSize));
     __ CompareRoot(FieldOperand(rbx, 0), Heap::kAllocationSiteMapRootIndex);
     __ j(equal, &feedback_register_initialized);
     __ LoadRoot(rbx, Heap::kUndefinedValueRootIndex);
     __ bind(&feedback_register_initialized);
 
     __ AssertUndefinedOrAllocationSite(rbx);
   }
 
-  // Pass original constructor to construct stub.
+  // Pass new target to construct stub.
   if (IsSuperConstructorCall()) {
     __ movp(rdx, rcx);
   } else {
     __ movp(rdx, rdi);
   }
 
   // Tail call to the function-specific construct stub (still in the caller
   // context at this point).
   __ movp(rcx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
   __ movp(rcx, FieldOperand(rcx, SharedFunctionInfo::kConstructStubOffset));
@@ skipping 2844 matching lines @@
     UNREACHABLE();
   }
 }
 
 
 void ArrayConstructorStub::Generate(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- rax    : argc
   //  -- rbx    : AllocationSite or undefined
   //  -- rdi    : constructor
-  //  -- rdx    : original constructor
+  //  -- rdx    : new target
   //  -- rsp[0] : return address
   //  -- rsp[8] : last argument
   // -----------------------------------
   if (FLAG_debug_code) {
     // The array construct code is only set for the global and natives
     // builtin Array functions which always have maps.
 
     // Initial map for the builtin Array function should be a map.
     __ movp(rcx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset));
     // Will both indicate a NULL and a Smi.
@@ skipping 692 matching lines @@
                            kStackSpace, nullptr, return_value_operand, NULL);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64