gcc/testsuite/gcc.target/aarch64/sve/reduc_strict_1_run.c

   1 /* { dg-do run { target { aarch64_sve_hw } } } */
   2 /* { dg-options "-O2 -ftree-vectorize" } */
   3
   4 #include "reduc_strict_1.c"
   5
   6 #define TEST_REDUC_PLUS(TYPE)                   \
   7   {                                             \
   8     TYPE a[NUM_ELEMS (TYPE)];                   \
   9     TYPE b[NUM_ELEMS (TYPE)];                   \
  10     TYPE r = 0, q = 3;                          \
  11     for (int i = 0; i < NUM_ELEMS (TYPE); i++)  \
  12       {                                         \
  13         a[i] = (i * 0.1) * (i & 1 ? 1 : -1);    \
  14         b[i] = (i * 0.3) * (i & 1 ? 1 : -1);    \
  15         r += a[i];                              \
  16         q -= b[i];                              \
  17         asm volatile ("" ::: "memory");         \
  18       }                                         \
  19     TYPE res = reduc_plus_##TYPE (a, b);        \
  20     if (res != r * q)                           \
  21       __builtin_abort ();                       \
  22   }
  23
  24 int __attribute__ ((optimize (1)))
  25 main ()
  26 {
  27   TEST_ALL (TEST_REDUC_PLUS);
  28   return 0;
  29 }