#### 6.56.20 SPARC VIS Built-in Functions

GCC supports SIMD operations on the SPARC using both the generic vector extensions (see Vector Extensions) as well as built-in functions for the SPARC Visual Instruction Set (VIS). When you use the `-mvis` switch, the VIS extension is exposed as the following built-in functions:

         typedef int v1si __attribute__ ((vector_size (4)));
         typedef int v2si __attribute__ ((vector_size (8)));
         typedef short v4hi __attribute__ ((vector_size (8)));
         typedef short v2hi __attribute__ ((vector_size (4)));
         typedef unsigned char v8qi __attribute__ ((vector_size (8)));
         typedef unsigned char v4qi __attribute__ ((vector_size (4)));

         void __builtin_vis_write_gsr (int64_t);
         int64_t __builtin_vis_read_gsr (void);

         void * __builtin_vis_alignaddr (void *, long);
         void * __builtin_vis_alignaddrl (void *, long);
         int64_t __builtin_vis_faligndatadi (int64_t, int64_t);
         v2si __builtin_vis_faligndatav2si (v2si, v2si);
         v4hi __builtin_vis_faligndatav4hi (v4si, v4si);
         v8qi __builtin_vis_faligndatav8qi (v8qi, v8qi);

         v4hi __builtin_vis_fexpand (v4qi);

         v4hi __builtin_vis_fmul8x16 (v4qi, v4hi);
         v4hi __builtin_vis_fmul8x16au (v4qi, v2hi);
         v4hi __builtin_vis_fmul8x16al (v4qi, v2hi);
         v4hi __builtin_vis_fmul8sux16 (v8qi, v4hi);
         v4hi __builtin_vis_fmul8ulx16 (v8qi, v4hi);
         v2si __builtin_vis_fmuld8sux16 (v4qi, v2hi);
         v2si __builtin_vis_fmuld8ulx16 (v4qi, v2hi);

         v4qi __builtin_vis_fpack16 (v4hi);
         v8qi __builtin_vis_fpack32 (v2si, v8qi);
         v2hi __builtin_vis_fpackfix (v2si);
         v8qi __builtin_vis_fpmerge (v4qi, v4qi);

         int64_t __builtin_vis_pdist (v8qi, v8qi, int64_t);

         long __builtin_vis_edge8 (void *, void *);
         long __builtin_vis_edge8l (void *, void *);
         long __builtin_vis_edge16 (void *, void *);
         long __builtin_vis_edge16l (void *, void *);
         long __builtin_vis_edge32 (void *, void *);
         long __builtin_vis_edge32l (void *, void *);

         long __builtin_vis_fcmple16 (v4hi, v4hi);
         long __builtin_vis_fcmple32 (v2si, v2si);
         long __builtin_vis_fcmpne16 (v4hi, v4hi);
         long __builtin_vis_fcmpne32 (v2si, v2si);
         long __builtin_vis_fcmpgt16 (v4hi, v4hi);
         long __builtin_vis_fcmpgt32 (v2si, v2si);
         long __builtin_vis_fcmpeq16 (v4hi, v4hi);
         long __builtin_vis_fcmpeq32 (v2si, v2si);

         v4hi __builtin_vis_fpadd16 (v4hi, v4hi);
         v2hi __builtin_vis_fpadd16s (v2hi, v2hi);
         v2si __builtin_vis_fpadd32 (v2si, v2si);
         v1si __builtin_vis_fpadd32s (v1si, v1si);
         v4hi __builtin_vis_fpsub16 (v4hi, v4hi);
         v2hi __builtin_vis_fpsub16s (v2hi, v2hi);
         v2si __builtin_vis_fpsub32 (v2si, v2si);
         v1si __builtin_vis_fpsub32s (v1si, v1si);

         long __builtin_vis_array8 (long, long);
         long __builtin_vis_array16 (long, long);
         long __builtin_vis_array32 (long, long);

When you use the `-mvis2` switch, the VIS version 2.0 built-in functions also become available:

         long __builtin_vis_bmask (long, long);
         int64_t __builtin_vis_bshuffledi (int64_t, int64_t);
         v2si __builtin_vis_bshufflev2si (v2si, v2si);
         v4hi __builtin_vis_bshufflev2si (v4hi, v4hi);
         v8qi __builtin_vis_bshufflev2si (v8qi, v8qi);

         long __builtin_vis_edge8n (void *, void *);
         long __builtin_vis_edge8ln (void *, void *);
         long __builtin_vis_edge16n (void *, void *);
         long __builtin_vis_edge16ln (void *, void *);
         long __builtin_vis_edge32n (void *, void *);
         long __builtin_vis_edge32ln (void *, void *);

When you use the `-mvis3` switch, the VIS version 3.0 built-in functions also become available:

         void __builtin_vis_cmask8 (long);
         void __builtin_vis_cmask16 (long);
         void __builtin_vis_cmask32 (long);

         v4hi __builtin_vis_fchksm16 (v4hi, v4hi);

         v4hi __builtin_vis_fsll16 (v4hi, v4hi);
         v4hi __builtin_vis_fslas16 (v4hi, v4hi);
         v4hi __builtin_vis_fsrl16 (v4hi, v4hi);
         v4hi __builtin_vis_fsra16 (v4hi, v4hi);
         v2si __builtin_vis_fsll16 (v2si, v2si);
         v2si __builtin_vis_fslas16 (v2si, v2si);
         v2si __builtin_vis_fsrl16 (v2si, v2si);
         v2si __builtin_vis_fsra16 (v2si, v2si);

         long __builtin_vis_pdistn (v8qi, v8qi);

         v4hi __builtin_vis_fmean16 (v4hi, v4hi);

         int64_t __builtin_vis_fpadd64 (int64_t, int64_t);
         int64_t __builtin_vis_fpsub64 (int64_t, int64_t);

         v4hi __builtin_vis_fpadds16 (v4hi, v4hi);
         v2hi __builtin_vis_fpadds16s (v2hi, v2hi);
         v4hi __builtin_vis_fpsubs16 (v4hi, v4hi);
         v2hi __builtin_vis_fpsubs16s (v2hi, v2hi);
         v2si __builtin_vis_fpadds32 (v2si, v2si);
         v1si __builtin_vis_fpadds32s (v1si, v1si);
         v2si __builtin_vis_fpsubs32 (v2si, v2si);
         v1si __builtin_vis_fpsubs32s (v1si, v1si);

         long __builtin_vis_fucmple8 (v8qi, v8qi);
         long __builtin_vis_fucmpne8 (v8qi, v8qi);
         long __builtin_vis_fucmpgt8 (v8qi, v8qi);
         long __builtin_vis_fucmpeq8 (v8qi, v8qi);

         float __builtin_vis_fhadds (float, float);
         double __builtin_vis_fhaddd (double, double);
         float __builtin_vis_fhsubs (float, float);
         double __builtin_vis_fhsubd (double, double);
         float __builtin_vis_fnhadds (float, float);
         double __builtin_vis_fnhaddd (double, double);

         int64_t __builtin_vis_umulxhi (int64_t, int64_t);
         int64_t __builtin_vis_xmulx (int64_t, int64_t);
         int64_t __builtin_vis_xmulxhi (int64_t, int64_t);