A64: Tidy up Push and Pop TODOs.

test/cctest/test-code-stubs-a64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Rrdistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Rrdistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Rrdistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 47 matching lines @@
   byte* start = stub.GetCode(isolate)->instruction_start();
   Label done;
 
   __ SetStackPointer(csp);
   __ PushCalleeSavedRegisters();
   __ Mov(jssp, csp);
   __ SetStackPointer(jssp);
 
   // Push the double argument.
   __ Push(d0);
-  if (!source_reg.is(jssp)) {
-    __ Mov(source_reg, jssp);
-  }
+  __ Mov(source_reg, jssp);
+
+  MacroAssembler::PushPopQueue queue(&masm);
 
   // Save registers make sure they don't get clobbered.
   int source_reg_offset = kDoubleSize;
   int reg_num = 0;
   for (;reg_num < Register::NumAllocatableRegisters(); ++reg_num) {
     Register reg = Register::from_code(reg_num);
     if (!reg.is(destination_reg)) {
-      __ Push(reg);
+      queue.Queue(reg);
       source_reg_offset += kPointerSize;
     }
   }
+  // Re-push the double argument.
+  queue.Queue(d0);
 
-  // Re-push the double argument.
-  __ Push(d0);
+  queue.PushQueued();
 
   // Call through to the actual stub
   if (inline_fastpath) {
     __ Ldr(d0, MemOperand(source_reg));
     __ TryInlineTruncateDoubleToI(destination_reg, d0, &done);
     if (destination_reg.is(source_reg)) {
       // Restore clobbered source_reg.
       __ add(source_reg, jssp, Operand(source_reg_offset));
     }
   }
@@ skipping 84 matching lines @@
                                         false));
       RunAllTruncationTests(
           RunGeneratedCodeCallWrapper,
           MakeConvertDToIFuncTrampoline(isolate,
                                         source_registers[s],
                                         dest_registers[d],
                                         true));
     }
   }
 }