gcc/testsuite/gcc.dg/vect/pr114108.c

   1 /* { dg-do compile } */
   2
   3 #include "tree-vect.h"
   4
   5 typedef signed char schar;
   6
   7 __attribute__((noipa, noinline, optimize("O3")))
   8 void foo(const schar *a, const schar *b, schar *c, int n)
   9 {
  10   for (int i = 0; i < n; i++)
  11     {
  12       unsigned u = __builtin_abs (a[i] - b[i]);
  13       c[i] = u <= 7U ? u : 7U;
  14     }
  15 }
  16
  17
  18 /* { dg-final { scan-tree-dump "LOOP VECTORIZED" "vect" { target aarch64*-*-* } } } */
  19 /* { dg-final { scan-tree-dump "vect_recog_abd_pattern: detected" "vect" { target aarch64*-*-* } } } */