A64: Make simulator compiler with optdebug

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 2720 matching lines @@
         clr_reg_name, clr_reg_value, xreg(31, Reg31IsStackPointer), clr_normal);
     return true;
   } else if (strcmp(desc, "wcsp") == 0) {
     ASSERT(CodeFromName(desc) == static_cast<int>(kSPRegInternalCode));
     PrintF("%s wcsp:%s 0x%08" PRIx32 "%s\n",
         clr_reg_name, clr_reg_value, wreg(31, Reg31IsStackPointer), clr_normal);
     return true;
   }
 
   int i = CodeFromName(desc);
-  if (i == -1) {
-    return false;
-  }
-  ASSERT(i >= 0);
+  STATIC_ASSERT(kNumberOfRegisters == kNumberOfFPRegisters);
+  if (i < 0 || static_cast<unsigned>(i) >= kNumberOfFPRegisters) return false;
 
   if (desc[0] == 'v') {
     PrintF("%s %s:%s 0x%016" PRIx64 "%s (%s%s:%s %g%s %s:%s %g%s)\n",
         clr_fpreg_name, VRegNameForCode(i),
         clr_fpreg_value, double_to_rawbits(dreg(i)),
         clr_normal,
         clr_fpreg_name, DRegNameForCode(i),
         clr_fpreg_value, dreg(i),
         clr_fpreg_name, SRegNameForCode(i),
         clr_fpreg_value, sreg(i),
@@ skipping 665 matching lines @@
     default:
       UNIMPLEMENTED();
   }
 }
 
 #endif  // USE_SIMULATOR
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_A64