https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81423
--- Comment #7 from Segher Boessenkool <segher at gcc dot gnu.org> --- Author: segher Date: Wed Jul 19 19:28:41 2017 New Revision: 250363 URL: https://gcc.gnu.org/viewcvs?rev=250363&root=gcc&view=rev Log: simplify-rtx: The truncation of an IOR can have all bits set (PR81423) ... if it is an IOR with a constant with all bits set in the mode that is truncated to, for example. Handle that case. PR rtl-optimization/81423 * simplify-rtx.c (simplify_truncation): Handle truncating an IOR with a constant that is -1 in the truncated to mode. Modified: trunk/gcc/ChangeLog trunk/gcc/simplify-rtx.c
