https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77844
--- Comment #13 from Martin Liška <marxin at gcc dot gnu.org> --- Author: marxin Date: Thu Mar 8 08:56:45 2018 New Revision: 258359 URL: https://gcc.gnu.org/viewcvs?rev=258359&root=gcc&view=rev Log: Backport r243662 2018-03-08 Martin Liska <mli...@suse.cz> Backport from mainline 2016-12-14 Jakub Jelinek <ja...@redhat.com> PR debug/77844 * valtrack.c: Include rtl-iter.h. (struct rtx_subst_pair): Add insn field. (propagate_for_debug_subst): If pair->to contains at least 2 regs, create a DEBUG_INSN with a debug temp before pair->insn and replace from with the debug temp instead of pair->to. (propagate_for_debug): Initialize p.insn. * combine.c (insn_uid_check): New inline function. (INSN_COST, LOG_LINKS): Use it instead of INSN_UID. (find_single_use, combine_instructions, cant_combine_insn_p, try_combine): Use NONDEBUG_INSN_P instead of INSN_P. 2018-03-08 Martin Liska <mli...@suse.cz> Backport from mainline 2016-12-14 Jakub Jelinek <ja...@redhat.com> PR debug/77844 * g++.dg/opt/pr77844.C: New test. Added: branches/gcc-6-branch/gcc/testsuite/g++.dg/opt/pr77844.C Modified: branches/gcc-6-branch/gcc/ChangeLog branches/gcc-6-branch/gcc/combine.c branches/gcc-6-branch/gcc/testsuite/ChangeLog branches/gcc-6-branch/gcc/valtrack.c
