ARM64: Slightly improve MacroAssembler::Allocate.

src/arm64/constants-arm64.h

 // 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 244 matching lines @@
 #undef DECLARE_INSTRUCTION_FIELDS_OFFSETS
 
 // ImmPCRel is a compound field (not present in INSTRUCTION_FIELDS_LIST), formed
 // from ImmPCRelLo and ImmPCRelHi.
 const int ImmPCRel_mask = ImmPCRelLo_mask | ImmPCRelHi_mask;
 
 // Condition codes.
 enum Condition {
   eq = 0,
   ne = 1,
-  hs = 2,
-  lo = 3,
+  hs = 2, cs = hs,
+  lo = 3, cc = lo,
   mi = 4,
   pl = 5,
   vs = 6,
   vc = 7,
   hi = 8,
   ls = 9,
   ge = 10,
   lt = 11,
   gt = 12,
   le = 13,
@@ skipping 985 matching lines @@
 };
 
 enum UnallocatedOp {
   UnallocatedFixed = 0x00000000,
   UnallocatedFMask = 0x00000000
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM64_CONSTANTS_ARM64_H_