gcc/testsuite/gcc.dg/pr77834.c

   1 /* PR target/77834 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O -ftree-pre -Wno-psabi" } */
   4 /* { dg-additional-options "-mstringop-strategy=libcall" { target i?86-*-* x86_64-*-* } } */
   5
   6 typedef int V __attribute__ ((vector_size (64)));
   7
   8 V
   9 foo (V u, V v, int w)
  10 {
  11   do
  12     {
  13       if (u[0]) v ^= u[w];
  14     }
  15   while ((V) { 0, u[w] }[1]);
  16   u = (V) { v[v[0]], u[u[0]] };
  17   return v + u;
  18 }