A64: Fix register update detection for csp.

src/a64/simulator-a64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions 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 836 matching lines @@
         (last_regs[i] != xreg(i, Reg31IsStackPointer))) {
       fprintf(stream_,
               "# %s%4s:%s 0x%016" PRIx64 "%s\n",
               clr_reg_name,
               XRegNameForCode(i, Reg31IsStackPointer),
               clr_reg_value,
               xreg(i, Reg31IsStackPointer),
               clr_normal);
     }
     // Cache the new register value so the next run can detect any changes.
-    last_regs[i] = xreg(i);
+    last_regs[i] = xreg(i, Reg31IsStackPointer);
   }
   first_run = false;
 }
 
 
 void Simulator::PrintFPRegisters(bool print_all_regs) {
   static bool first_run = true;
   static uint64_t last_regs[kNumberOfFPRegisters];
 
   // Define some colour codes to use for the register dump.
@@ skipping 2450 matching lines @@
     default:
       UNIMPLEMENTED();
   }
 }
 
 #endif  // USE_SIMULATOR
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_A64