gcc/testsuite/gcc.dg/loop-unswitch-16.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -funswitch-loops -fdump-tree-unswitch-optimized --param max-unswitch-insns=100" } */
   3
   4 void bar (int);
   5 void foo (int a, int b, int c, int n)
   6 {
   7   for (int i = 0; i < n; ++i)
   8     {
   9       if (a > 5)
  10         bar (1);
  11       if (b < 10)
  12         bar (2);
  13       if (c != 5)
  14         bar (3);
  15     }
  16 }
  17
  18 /* Verify we can unswitch all permutations of the predicates.  */
  19 /* { dg-final { scan-tree-dump-times "unswitching loop . on .if. with condition" 7 "unswitch" } } */
  20 /* { dg-final { scan-tree-dump "unswitching loop . on .if. with condition: a" "unswitch" } } */
  21 /* { dg-final { scan-tree-dump "unswitching loop . on .if. with condition: b" "unswitch" } } */
  22 /* { dg-final { scan-tree-dump "unswitching loop . on .if. with condition: c" "unswitch" } } */