gcc/testsuite/gcc.dg/vect/vect-strided-a-u16-mult.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 128
   7
   8 typedef struct {
   9    unsigned short a;
  10    unsigned short b;
  11 } s;
  12
  13 __attribute__ ((noinline)) int
  14 main1 ()
  15 {
  16   s arr[N];
  17   s *ptr = arr;
  18   unsigned int iarr[N];
  19   unsigned int *iptr = iarr;
  20   s res[N];
  21   unsigned int ires[N];
  22   int i;
  23
  24   for (i = 0; i < N; i++)
  25     {
  26       arr[i].a = i;
  27       arr[i].b = i * 2;
  28       iarr[i] = i * 3;
  29       if (arr[i].a == 178)
  30          abort();
  31     }
  32
  33   for (i = 0; i < N; i++)
  34     {
  35       ires[i] = *iptr;
  36       res[i].b = ptr->b - ptr->a;
  37       res[i].a = ptr->b + ptr->a;
  38       iptr++;
  39       ptr++;
  40     }
  41
  42   /* check results:  */
  43   for (i = 0; i < N; i++)
  44     {
  45       if (res[i].b != arr[i].b - arr[i].a
  46           || ires[i] != iarr[i]
  47           || res[i].a != arr[i].b + arr[i].a)
  48         abort ();
  49     }
  50
  51   return 0;
  52 }
  53
  54 int main (void)
  55 {
  56   int i;
  57
  58   check_vect ();
  59
  60   main1 ();
  61
  62   return 0;
  63 }
  64
  65 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect"  { target { vect_interleave && vect_extract_even_odd } } } } */
  66 /* { dg-final { cleanup-tree-dump "vect" } } */
  67