https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92468
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Last reconfirmed| |2020-03-16 Status|UNCONFIRMED |NEW Ever confirmed|0 |1 --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- Confirmed. THe issue is there isn't any real instruction at line 20 since the inner loop is unrolled completely and the if (g) stmt is elided as false. The f loop is also unrolled completely and debug stmts and breakpoints align with the case where k is one.