gcc/testsuite/gcc.target/i386/pr66174.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -ftree-vectorize -mavx512f" } */
   3
   4 extern void abort (void);
   5
   6 typedef struct {
   7    unsigned int a;
   8    unsigned int b;
   9 } ii;
  10
  11 void foo (unsigned short *arr, ii *iarr)
  12 {
  13   ii *iptr = iarr;
  14   unsigned short res[128];
  15   ii ires[128];
  16   int i;
  17   for (i = 0; i < 128; i++)
  18     {
  19       ires[i].a = iptr->b - iptr->a;
  20       ires[i].b = iptr->b + iptr->a;
  21       iptr++;
  22     }
  23   for (i = 0; i < 128; i++)
  24     {
  25       if (res[i] != arr[i]
  26           || ires[i].a != iarr[i].b - iarr[i].a
  27           || ires[i].b != iarr[i].b + iarr[i].a)
  28         abort ();
  29     }
  30 }