gcc/testsuite/gcc.target/arm/pr83687.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target arm_neon_hw } */
   3 /* { dg-options "-O2" } */
   4 /* { dg-add-options arm_neon } */
   5
   6 #include <arm_neon.h>
   7
   8 __attribute__ ((noinline)) int8_t
   9 testFunction1 (int8_t a, int8_t b)
  10 {
  11   volatile int8x16_t sub = vsubq_s8 (vdupq_n_s8 (a), vdupq_n_s8 (b));
  12   int8x16_t abs = vabsq_s8 (sub);
  13   return vgetq_lane_s8 (abs, 0);
  14 }
  15
  16 __attribute__ ((noinline)) int8_t
  17 testFunction2 (int8_t a, int8_t b)
  18 {
  19   int8x16_t sub = vsubq_s8 (vdupq_n_s8 (a), vdupq_n_s8 (b));
  20   int8x16_t abs = vabsq_s8 (sub);
  21   return vgetq_lane_s8 (abs, 0);
  22 }
  23
  24 int
  25 main (void)
  26 {
  27   if (testFunction1 (-100, 100) != testFunction2 (-100, 100))
  28     __builtin_abort ();
  29
  30   return 0;
  31 }