gcc/testsuite/gcc.dg/vect/pr108608.c

   1 #include "tree-vect.h"
   2
   3 double __attribute__((noipa))
   4 foo (double m, float *ptr)
   5 {
   6   for (int i = 0; i < 256; i++)
   7     m = __builtin_fmax (m, ptr[i]);
   8   return m;
   9 }
  10
  11 int
  12 main (void)
  13 {
  14   check_vect ();
  15   float ptr[256];
  16 #pragma GCC novector
  17   for (int j = 0; j < 16; ++j)
  18     {
  19       for (int i = 0; i < 256; ++i)
  20         ptr[i] = i == 128 + j ? 2 + j : i == 161 ? 1 : 0;
  21       if (foo (0, ptr) != 2 + j)
  22         __builtin_abort ();
  23     }
  24   return 0;
  25 }