gcc/testsuite/gcc.dg/vect/bb-slp-pr101615-1.c

   1 /* { dg-additional-options "-w -Wno-psabi" } */
   2
   3 #include "tree-vect.h"
   4
   5 typedef int v4si __attribute__((vector_size(16)));
   6
   7 int a[4];
   8 int b[4];
   9
  10 void __attribute__((noipa))
  11 foo (v4si x)
  12 {
  13   b[0] = a[3] + x[0];
  14   b[1] = a[2] + x[1];
  15   b[2] = a[1] + x[2];
  16   b[3] = a[0] + x[3];
  17 }
  18
  19 int main()
  20 {
  21   check_vect ();
  22   for (int i = 0; i < 4; ++i)
  23     a[i] = i;
  24   v4si x = (v4si) { 8, 6, 4, 2 };
  25   foo (x);
  26   if (b[0] != 11 || b[1] != 8 || b[2] != 5 || b[3] != 2)
  27     __builtin_abort ();
  28   return 0;
  29 }