https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69737
--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> --- Author: segher Date: Fri Feb 12 18:32:21 2016 New Revision: 233384 URL: https://gcc.gnu.org/viewcvs?rev=233384&root=gcc&view=rev Log: combine: More distribute_notes trouble (PR69737) PR64682 is a problem in distribute_notes, where it has trouble putting a REG_DEAD note for a reg that is set twice in the right spot. My fix for that did the wrong thing for PR69567. And then my attempted fix for that one made PR64682 fail again. Instead, let's just lose the note in such complicated cases, like we already do in certain similar cases. Backport from mainline 2016-02-11 Segher Boessenkool <seg...@kernel.crashing.org> PR rtl-optimization/64682 PR rtl-optimization/69567 PR rtl-optimization/69737 * combine.c (distribute_notes) <REG_DEAD>: If the register is set in I2 as well, just lose it. Modified: branches/gcc-5-branch/gcc/ChangeLog branches/gcc-5-branch/gcc/combine.c
