gcc/testsuite/gcc.dg/vect/pr65930-2.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include "tree-vect.h"
   4
   5 int __attribute__((noipa))
   6 bar (unsigned int *x, int n)
   7 {
   8   int sum = 4;
   9   x = __builtin_assume_aligned (x, __BIGGEST_ALIGNMENT__);
  10   for (int i = 0; i < n; ++i)
  11     sum += x[i*4+0]+ x[i*4 + 1] + x[i*4 + 2] + x[i*4 + 3];
  12   return sum;
  13 }
  14
  15 int
  16 main ()
  17 {
  18   static int a[16] __attribute__((aligned(__BIGGEST_ALIGNMENT__)))
  19     = { 1, 3, 5, 8, 9, 10, 17, 18, 23, 29, 30, 55, 42, 2, 3, 1 };
  20   check_vect ();
  21   if (bar (a, 4) != 260)
  22     abort ();
  23   return 0;
  24 }
  25
  26 /* { dg-final { scan-tree-dump "vectorized 1 loops" "vect" } } */
  27 /* { dg-final { scan-tree-dump "Loop contains only SLP stmts" "vect" } } */
  28 /* { dg-final { scan-tree-dump "vectorizing stmts using SLP" "vect" } } */