/* { dg-do compile } */ /* { dg-options "-fno-strict-overflow -O2 -fdump-tree-final_cleanup" } */ /* Source: Ian Lance Taylor. */ /* VRP test. We can not simplify the conditional when not using strict overflow semantics. We don't test this with -fstrict-overflow because it turns into an infinite loop. That is OK but it would also be OK to not do that. */ int foo () { int i, bits; for (i = 1, bits = 1; i > 0; i += i) ++bits; return bits; } /* { dg-final { scan-tree-dump "return bits" "final_cleanup" } } */ /* { dg-final { cleanup-tree-dump "final_cleanup" } } */