gcc/testsuite/c-c++-common/gomp/pr60823-2.c

   1 /* PR tree-optimization/60823 */
   2 /* { dg-do run } */
   3 /* { dg-require-effective-target vect_simd_clones } */
   4 /* { dg-options "-O2 -fopenmp-simd" } */
   5
   6 #pragma omp declare simd simdlen(4) notinbranch
   7 __attribute__((noinline)) int
   8 foo (double c1, double c2)
   9 {
  10   double z1 = c1, z2 = c2;
  11   int res = 100, i;
  12
  13   for (i = 0; i < 5; i++)
  14     {
  15       res = (z1 * z1 + z2 * z2 > 4.0) ? (i < res ? i : res) : res;
  16       z1 = c1 + z1 * z1 - z2 * z2;
  17       z2 = c2 + 2.0 * z1 * z2;
  18       c1 += 0.5;
  19       c2 += 0.5;
  20     }
  21   return res;
  22 }
  23
  24 __attribute__((noinline, noclone)) void
  25 bar (double *x, double *y)
  26 {
  27   asm volatile ("" : : "rm" (x), "rm" (y) : "memory");
  28 }
  29
  30 int
  31 main ()
  32 {
  33   int i;
  34   double c[4] = { 0.0, 1.0, 0.0, 1.0 };
  35   double d[4] = { 0.0, 1.0, 2.0, 0.0 };
  36   int e[4];
  37   bar (c, d);
  38 #pragma omp simd safelen(4)
  39   for (i = 0; i < 4; i++)
  40     e[i] = foo (c[i], d[i]);
  41   if (e[0] != 3 || e[1] != 1 || e[2] != 1 || e[3] != 2)
  42     __builtin_abort ();
  43   return 0;
  44 }