gcc/testsuite/gcc.dg/vect/pr103744-2.c

   1 /* { dg-do compile } */
   2
   3 int
   4 f1 (int *restrict x, unsigned short *restrict y)
   5 {
   6   int res = 0;
   7   for (int i = 0; i < 100; i += 2)
   8     {
   9       unsigned short i1 = y[i + 0] + 1;
  10       unsigned short i2 = y[i + 1] + 2;
  11       res += x[i1];
  12       res += x[i2];
  13     }
  14   return res;
  15 }
  16
  17 void
  18 f2 (int *restrict x, unsigned short *restrict y)
  19 {
  20   int res1 = 0;
  21   int res2 = 0;
  22   for (int i = 0; i < 100; i += 2)
  23     {
  24       unsigned short i1 = y[i + 0] + 1;
  25       unsigned short i2 = y[i + 1] + 2;
  26       res1 += x[i1];
  27       res2 += x[i2];
  28     }
  29   x[0] = res1;
  30   x[1] = res2;
  31 }