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 #ifdef __aarch64__
   7 #pragma omp declare simd simdlen(2) notinbranch
   8 #else
   9 #pragma omp declare simd simdlen(4) notinbranch
  10 #endif
  11 __attribute__((noinline)) int
  12 foo (double c1, double c2)
  13 {
  14   double z1 = c1, z2 = c2;
  15   int res = 100, i;
  16
  17   for (i = 0; i < 5; i++)
  18     {
  19       res = (z1 * z1 + z2 * z2 > 4.0) ? (i < res ? i : res) : res;
  20       z1 = c1 + z1 * z1 - z2 * z2;
  21       z2 = c2 + 2.0 * z1 * z2;
  22       c1 += 0.5;
  23       c2 += 0.5;
  24     }
  25   return res;
  26 }
  27
  28 __attribute__((noinline, noclone)) void
  29 bar (double *x, double *y)
  30 {
  31   asm volatile ("" : : "rm" (x), "rm" (y) : "memory");
  32 }
  33
  34 int
  35 main ()
  36 {
  37   int i;
  38   double c[4] = { 0.0, 1.0, 0.0, 1.0 };
  39   double d[4] = { 0.0, 1.0, 2.0, 0.0 };
  40   int e[4];
  41   bar (c, d);
  42 #pragma omp simd safelen(4)
  43   for (i = 0; i < 4; i++)
  44     e[i] = foo (c[i], d[i]);
  45   if (e[0] != 3 || e[1] != 1 || e[2] != 1 || e[3] != 2)
  46     __builtin_abort ();
  47   return 0;
  48 }