https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68535
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Last reconfirmed|2015-11-25 00:00:00 |2016-7-31 Known to fail| |6.1.0 --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- So there is no confusion here. Look at gen_ldm_seq: The last set to base_reg is not needed. Look at arm_gen_movmemqi, the for loop that sets i and increments i but never uses i; The condition that is used here is in_words_to_go. Look at arm_expand_prologue: the last setting of insn and insn is not used after that point. Look at thumb_pop: pushed_words is only set or incremented and never used otherwise. For the last one look at thumb1_emit_multi_reg_push, the last setting of regs_to_pop is not used after that except in a comment.