gcc/testsuite/gcc.target/aarch64/abs_2.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 --save-temps" } */
   3
   4 #include "arm_neon.h"
   5
   6 extern void abort (void);
   7
   8 int
   9 main (int argc, char **argv)
  10 {
  11   uint64_t got;
  12   uint64_t exp = UINT64_C (0x0001000100003b9b);
  13   int16x4_t val1 = vcreate_s16 (0x7fff800080007ffful);
  14   int16x4_t val2 = vcreate_s16 (0x80007fff80004464ul);
  15   int16x4_t result;
  16   /* Avoid folding away the sub early.  */
  17   asm volatile ("mov %d0, %0.d[0]":"+w"(val1));
  18
  19   /* Expect "result" = 0001000100003b9b.  */
  20   result = vabs_s16 (vsub_s16 (val1, val2));
  21
  22   got = vget_lane_u64 (vreinterpret_u64_s16 (result), 0);
  23   if (exp != got)
  24     abort ();
  25
  26   return 0;
  27 }
  28
  29
  30 /* { dg-final { scan-assembler-not "sabd" } } */