https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88314
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |missed-optimization Status|UNCONFIRMED |NEW Last reconfirmed| |2018-12-03 Ever confirmed|0 |1 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- Confirmed. Nothing in GCC tracks this kind of "ranges", we only compute the result lies in [0, 32]. We do know possibly non-zero bits 0x3c so we should still be able to test 0x3c nonzero-bits against [1, 7].