https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87761
--- Comment #14 from Jeffrey A. Law <law at gcc dot gnu.org> --- Author: law Date: Tue Feb 26 17:08:06 2019 New Revision: 269218 URL: https://gcc.gnu.org/viewcvs?rev=269218&root=gcc&view=rev Log: PR rtl-optimization/87761 * regcprop.c (copyprop_hardreg_forward_1): Use REG_UNUSED notes to detect obviously dead insns and delete them. Modified: trunk/gcc/ChangeLog trunk/gcc/regcprop.c