ARM64: Add and use SmiTagAndPush.

src/arm64/debug-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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/codegen.h"
 #include "src/debug.h"
@@ skipping 139 matching lines @@
     ASSERT((scratch.Bit() & object_regs) == 0);
     ASSERT((scratch.Bit() & non_object_regs) == 0);
     ASSERT((masm->TmpList()->list() & (object_regs | non_object_regs)) == 0);
     STATIC_ASSERT(kSmiValueSize == 32);
 
     CPURegList non_object_list =
         CPURegList(CPURegister::kRegister, kXRegSizeInBits, non_object_regs);
     while (!non_object_list.IsEmpty()) {
       // Store each non-object register as two SMIs.
       Register reg = Register(non_object_list.PopLowestIndex());
-      __ Push(reg);
-      __ Poke(wzr, 0);
-      __ Push(reg.W(), wzr);
+      __ Lsr(scratch, reg, 32);
+      __ SmiTagAndPush(scratch, reg);
+
       // Stack:
       //  jssp[12]: reg[63:32]
       //  jssp[8]: 0x00000000 (SMI tag & padding)
       //  jssp[4]: reg[31:0]
       //  jssp[0]: 0x00000000 (SMI tag & padding)
       STATIC_ASSERT((kSmiTag == 0) && (kSmiShift == 32));
     }
 
     if (object_regs != 0) {
       __ PushXRegList(object_regs);
@@ skipping 175 matching lines @@
 void DebugCodegen::GenerateFrameDropperLiveEdit(MacroAssembler* masm) {
   masm->Abort(kLiveEditFrameDroppingIsNotSupportedOnARM64);
 }
 
 
 const bool LiveEdit::kFrameDropperSupported = false;
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64