Use register arguments for RestParamAccessStub

src/full-codegen/mips64/full-codegen-mips64.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_MIPS64
 
 // Note on Mips implementation:
 //
 // The result_register() for mips is the 'v0' register, which is defined
 // by the ABI to contain function return values. However, the first
@@ skipping 258 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;
 
-    __ Daddu(a3, fp, Operand(StandardFrameConstants::kCallerSPOffset + offset));
-    __ li(a2, Operand(Smi::FromInt(num_parameters)));
-    __ li(a1, Operand(Smi::FromInt(rest_index)));
-    __ li(a0, Operand(Smi::FromInt(language_mode())));
-    __ Push(a3, a2, a1, a0);
+    __ li(RestParamAccessDescriptor::parameter_count(),
+          Operand(Smi::FromInt(num_parameters)));
+    __ Daddu(RestParamAccessDescriptor::parameter_pointer(), fp,
+             Operand(StandardFrameConstants::kCallerSPOffset + offset));
+    __ li(RestParamAccessDescriptor::rest_parameter_index(),
+          Operand(Smi::FromInt(rest_index)));
+    __ li(RestParamAccessDescriptor::language_mode(),
+          Operand(Smi::FromInt(language_mode())));
+    DCHECK(a1.is(RestParamAccessDescriptor::language_mode()));
     function_in_register_a1 = false;
 
     RestParamAccessStub stub(isolate());
     __ CallStub(&stub);
 
     SetVar(rest_param, v0, a1, a2);
   }
 
   Variable* arguments = scope()->arguments();
   if (arguments != NULL) {
@@ skipping 4585 matching lines @@
          reinterpret_cast<uint64_t>(
              isolate->builtins()->OsrAfterStackCheck()->entry()));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS64