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/* { dg-do compile } */ /* { dg-options "-O2 -fno-strict-overflow -fdump-tree-ivcanon-details" } */ void bar(); void foo(char *dst) { char *const end = dst; do { bar(); dst += 2; } while (dst < end); } /* { dg-final { scan-tree-dump " zero if " "ivcanon" } } */