154         v0,  v1,  v2,  v3,  v4,  v5,  v6,  v7,
 155         v8,  v9,  v10, v11, v12, v13, v14, v15,
 156         v16, v17, v18, v19, v20, v21, v22, v23,
 157         v24, v25, v26, v27, v28, v29, v30, v31
 158     );
 159     // @formatter:on
 160 
 161     /**
 162      * Basic set of CPU features mirroring what is returned from the cpuid instruction. See:
 163      * {@code VM_Version::cpuFeatureFlags}.
 164      */
 165     public enum CPUFeature {
 166         FP,
 167         ASIMD,
 168         EVTSTRM,
 169         AES,
 170         PMULL,
 171         SHA1,
 172         SHA2,
 173         CRC32,


 174         A53MAC,
 175         DMB_ATOMICS
 176     }
 177 
 178     private final EnumSet<CPUFeature> features;
 179 
 180     /**
 181      * Set of flags to control code emission.
 182      */
 183     public enum Flag {
 184         UseBarriersForVolatile,
 185         UseCRC32,
 186         UseNeon
 187     }
 188 
 189     private final EnumSet<Flag> flags;
 190 
 191     public AArch64(EnumSet<CPUFeature> features, EnumSet<Flag> flags) {
 192         super("aarch64", AArch64Kind.QWORD, ByteOrder.LITTLE_ENDIAN, true, allRegisters, 0, 0, 0);
 193         this.features = features;

 154         v0,  v1,  v2,  v3,  v4,  v5,  v6,  v7,
 155         v8,  v9,  v10, v11, v12, v13, v14, v15,
 156         v16, v17, v18, v19, v20, v21, v22, v23,
 157         v24, v25, v26, v27, v28, v29, v30, v31
 158     );
 159     // @formatter:on
 160 
 161     /**
 162      * Basic set of CPU features mirroring what is returned from the cpuid instruction. See:
 163      * {@code VM_Version::cpuFeatureFlags}.
 164      */
 165     public enum CPUFeature {
 166         FP,
 167         ASIMD,
 168         EVTSTRM,
 169         AES,
 170         PMULL,
 171         SHA1,
 172         SHA2,
 173         CRC32,
 174         LSE,
 175         STXR_PREFETCH,
 176         A53MAC,
 177         DMB_ATOMICS
 178     }
 179 
 180     private final EnumSet<CPUFeature> features;
 181 
 182     /**
 183      * Set of flags to control code emission.
 184      */
 185     public enum Flag {
 186         UseBarriersForVolatile,
 187         UseCRC32,
 188         UseNeon
 189     }
 190 
 191     private final EnumSet<Flag> flags;
 192 
 193     public AArch64(EnumSet<CPUFeature> features, EnumSet<Flag> flags) {
 194         super("aarch64", AArch64Kind.QWORD, ByteOrder.LITTLE_ENDIAN, true, allRegisters, 0, 0, 0);
 195         this.features = features;