Use register arguments for RestParamAccessStub

src/full-codegen/arm64/full-codegen-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/ast/scopes.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 252 matching lines @@
   }
 
   // Possibly allocate RestParameters
   int rest_index;
   Variable* rest_param = scope()->rest_parameter(&rest_index);
   if (rest_param) {
     Comment cmnt(masm_, "[ Allocate rest parameter array");
 
     int num_parameters = info->scope()->num_parameters();
     int offset = num_parameters * kPointerSize;
+    __ Mov(RestParamAccessDescriptor::parameter_count(),
+           Smi::FromInt(num_parameters));
+    __ Add(RestParamAccessDescriptor::parameter_pointer(), fp,
+           StandardFrameConstants::kCallerSPOffset + offset);
+    __ Mov(RestParamAccessDescriptor::rest_parameter_index(),
+           Smi::FromInt(rest_index));
+    __ Mov(RestParamAccessDescriptor::language_mode(),
+           Smi::FromInt(language_mode()));
+    DCHECK(x1.is(RestParamAccessDescriptor::language_mode()));
 
-    __ Add(x3, fp, StandardFrameConstants::kCallerSPOffset + offset);
-    __ Mov(x2, Smi::FromInt(num_parameters));
-    __ Mov(x1, Smi::FromInt(rest_index));
-    __ Mov(x0, Smi::FromInt(language_mode()));
-    __ Push(x3, x2, x1, x0);
     function_in_register_x1 = false;
 
     RestParamAccessStub stub(isolate());
     __ CallStub(&stub);
 
     SetVar(rest_param, x0, x1, x2);
   }
 
   Variable* arguments = scope()->arguments();
   if (arguments != NULL) {
@@ skipping 4603 matching lines @@
   }
 
   return INTERRUPT;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64