gcc/testsuite/gcc.dg/pr54346.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-dse1 -Wno-psabi" } */
   3 /* { dg-additional-options "--param=riscv-two-source-permutes" { target riscv*-*-* } } */
   4
   5 typedef int veci __attribute__ ((vector_size (4 * sizeof (int))));
   6
   7 void fun (veci a, veci b, veci *i)
   8 {
   9   veci c = __builtin_shuffle (a, b, __extension__ (veci) {1, 4, 2, 7});
  10   *i = __builtin_shuffle (c, __extension__ (veci) { 7, 2, 1, 5 });
  11 }
  12
  13 /* { dg-final { scan-tree-dump "VEC_PERM_EXPR.*{ 3, 6, 0, 0 }" "dse1" } } */
  14 /* { dg-final { scan-tree-dump-times "VEC_PERM_EXPR" 1 "dse1" } } */