On April 13, 2018 9:33:31 PM GMT+02:00, Eric Botcazou <ebotca...@adacore.com> wrote: >> 2018-04-13 Jakub Jelinek <ja...@redhat.com> >> >> PR rtl-optimization/85376 >> * simplify-rtx.c (simplify_const_unary_operation): For CLZ and CTZ >and >> zero op0, if C?Z_DEFINED_VALUE_AT_ZERO is false, return NULL_RTX >> instead of a specific value. >> >> * gcc.dg/pr85376.c: New test. > >My preference would be for this one.
Likewise. Richard.