gcc/testsuite/gcc.dg/vect/pr81410.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target vect_long_long } */
   3
   4 #include "tree-vect.h"
   5
   6 long long x[24];
   7 long long y[16];
   8 long long z[8];
   9
  10 void __attribute__((noinline)) foo()
  11 {
  12   for (int i = 0; i < 8; ++i)
  13     {
  14       y[2*i] = x[3*i];
  15       y[2*i + 1] = x[3*i + 1];
  16       z[i] = 1;
  17     }
  18 }
  19
  20 int main()
  21 {
  22   check_vect ();
  23
  24   for (int i = 0; i < 24; ++i)
  25     {
  26       x[i] = i;
  27       __asm__ volatile ("" : : : "memory");
  28     }
  29   foo ();
  30   for (int i = 0; i < 8; ++i)
  31     if (y[2*i] != 3*i || y[2*i+1] != 3*i + 1)
  32       __builtin_abort ();
  33
  34   return 0;
  35 }
  36
  37 /* { dg-final { scan-tree-dump "vectorized 1 loops" "vect" } } */