/* { dg-do compile } */ /* { dg-options "-O2 -fdump-tree-vrp1-stats -fdump-tree-dom2-stats" } */ void foo(); void bla(); void bar(); void dont_thread_3 (int nfirst) { int i = 0; int first = 0; do { if (first) foo (); else bar (); first = nfirst; bla (); } while (i++ < 100); } /* Threading through the loop header is not safe here. Peeling off the first iteration then unswitching the loop would be safe. */ /* { dg-final { scan-tree-dump-not "Jumps threaded" "vrp1"} } */ /* { dg-final { scan-tree-dump-not "Jumps threaded" "dom2"} } */