> 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. -- Eric Botcazou