https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91616
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2019-09-02 Ever confirmed|0 |1 --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- I don't see anything "incorrect" either - GCC optimizes this down to the single IV 'seed', eliding 'i' by expressing data_array[i] in terms of 'seed': <bb 3> [local count: 955630224]: # seed_14 = PHI <14627338366734941935(2), seed_7(3)> seed_7 = seed_14 + 1; MEM[symbol: data_array, index: seed_7, step: 8, offset: -6338242491622225792B] = seed_14; if (seed_7 != 14627338366734941951) goto <bb 3>; [89.00%]