gcc/testsuite/gcc.dg/pr100887.c

   1 /* PR target/100887 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wno-psabi -w" } */
   4 /* { dg-additional-options "-mavx512f" { target { i?86-*-* x86_64-*-* } } } */
   5
   6 typedef unsigned long long __attribute__((__vector_size__ (2 * sizeof (long long)))) U;
   7 typedef unsigned long long __attribute__((__vector_size__ (4 * sizeof (long long)))) V;
   8 typedef unsigned long long __attribute__((__vector_size__ (8 * sizeof (long long)))) W;
   9
  10 U
  11 foo (V v)
  12 {
  13   return __builtin_shufflevector ((W){}, v, 0, 8);
  14 }