[builtins] Remove the unused AllocationSite slot from ConstructFrame.

src/builtins/arm64/builtins-arm64.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_ARM64
 
 #include "src/arm64/frames-arm64.h"
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
@@ skipping 517 matching lines @@
   Label ok;
   __ CompareRoot(masm->StackPointer(), Heap::kStackLimitRootIndex);
   __ B(hs, &ok);
 
   GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode);
 
   __ Bind(&ok);
   GenerateTailCallToSharedCode(masm);
 }
 
-static void Generate_JSConstructStubHelper(MacroAssembler* masm,
-                                           bool is_api_function,
-                                           bool create_implicit_receiver,
-                                           bool check_derived_construct) {
+namespace {
+
+void Generate_JSConstructStubHelper(MacroAssembler* masm, bool is_api_function,
+                                    bool create_implicit_receiver,
+                                    bool check_derived_construct) {
   // ----------- S t a t e -------------
   //  -- x0     : number of arguments
   //  -- x1     : constructor function
-  //  -- x2     : allocation site or undefined
   //  -- x3     : new target
   //  -- lr     : return address
   //  -- cp     : context pointer
   //  -- sp[...]: constructor arguments
   // -----------------------------------
 
   ASM_LOCATION("Builtins::Generate_JSConstructStubHelper");
 
   Isolate* isolate = masm->isolate();
 
   // Enter a construct frame.
   {
     FrameScope scope(masm, StackFrame::CONSTRUCT);
 
     // Preserve the four incoming parameters on the stack.
     Register argc = x0;
     Register constructor = x1;
-    Register allocation_site = x2;
     Register new_target = x3;
 
     // Preserve the incoming parameters on the stack.
-    __ AssertUndefinedOrAllocationSite(allocation_site, x10);
-    __ Push(cp);
     __ SmiTag(argc);
-    __ Push(allocation_site, argc);
+    __ Push(cp, argc);
 
     if (create_implicit_receiver) {
       // Allocate the new receiver object.
       __ Push(constructor, new_target);
       FastNewObjectStub stub(masm->isolate());
       __ CallStub(&stub);
       __ Mov(x4, x0);
       __ Pop(new_target, constructor);
 
       // ----------- S t a t e -------------
@@ skipping 115 matching lines @@
   }
 
   __ DropBySMI(x1);
   __ Drop(1);
   if (create_implicit_receiver) {
     __ IncrementCounter(isolate->counters()->constructed_objects(), 1, x1, x2);
   }
   __ Ret();
 }
 
+}  // namespace
+
 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);
@@ skipping 2290 matching lines @@
     __ Unreachable();
   }
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM