ARM64: Enable shorten-64-to-32 warning

test/cctest/test-utils-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 78 matching lines @@
   inline double dreg(unsigned code) const {
     return rawbits_to_double(dreg_bits(code));
   }
 
   // Stack pointer accessors.
   inline int64_t spreg() const {
     DCHECK(SPRegAliasesMatch());
     return dump_.sp_;
   }
 
-  inline int64_t wspreg() const {
+  inline int32_t wspreg() const {
     DCHECK(SPRegAliasesMatch());
-    return dump_.wsp_;
+    return static_cast<int32_t>(dump_.wsp_);
   }
 
   // Flags accessors.
-  inline uint64_t flags_nzcv() const {
+  inline uint32_t flags_nzcv() const {
     DCHECK(IsComplete());
     DCHECK((dump_.flags_ & ~Flags_mask) == 0);
     return dump_.flags_ & Flags_mask;
   }
 
   inline bool IsComplete() const {
     return completed_;
   }
 
  private:
@@ skipping 108 matching lines @@
 // As Clobber, but for FP registers.
 void ClobberFP(MacroAssembler* masm, RegList reg_list,
                double const value = kFP64SignallingNaN);
 
 // As Clobber, but for a CPURegList with either FP or integer registers. When
 // using this method, the clobber value is always the default for the basic
 // Clobber or ClobberFP functions.
 void Clobber(MacroAssembler* masm, CPURegList reg_list);
 
 #endif  // V8_ARM64_TEST_UTILS_ARM64_H_