gcc/testsuite/gcc.dg/pr29637.c

   1 /* PR tree-optimization/29637 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -ftree-vectorize" } */
   4
   5 typedef struct __attribute__ ((aligned (8)))
   6 {
   7     short a, b, c, d;
   8 } A;
   9
  10 typedef struct
  11 {
  12   A a[24];
  13 } B;
  14
  15 static const A b = { 0, 0, 1, -1 };
  16
  17 void
  18 foo (B *x)
  19 {
  20   int i;
  21   for (i = 0; i <= 20; i += 4)
  22     x->a[i] = b;
  23 }