gcc/testsuite/gcc.dg/Wunused-var-3.c

   1 /* PR c/52577 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wunused" } */
   4
   5 typedef int V __attribute__((vector_size (sizeof (int) * 4)));
   6
   7 void
   8 f1 (V *p)
   9 {
  10   V mask = { 1, 2, 3, 0 };
  11   *p = __builtin_shuffle (*p, mask);
  12 }
  13
  14 void
  15 f2 (V *p, V *q)
  16 {
  17   V mask = { 1, 2, 3, 0 };
  18   *p = __builtin_shuffle (*p, *q, mask);
  19 }
  20
  21 void
  22 f3 (V *p, V *mask)
  23 {
  24   V a = { 1, 2, 3, 0 };
  25   *p = __builtin_shuffle (a, *mask);
  26 }
  27
  28 void
  29 f4 (V *p, V *mask)
  30 {
  31   V a = { 1, 2, 3, 0 };
  32   V b = { 2, 3, 4, 1 };
  33   *p = __builtin_shuffle (a, b, *mask);
  34 }