https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99114
--- Comment #6 from pipcet at gmail dot com --- Created attachment 50204 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50204&action=edit RTL dump of combine pass (Gzipped because of the file size limit). The relevant section is around this code: (note 4724 4779 4727 667 [bb 667] NOTE_INSN_BASIC_BLOCK) (note 4727 4724 4728 667 NOTE_INSN_DELETED) (note 4728 4727 4729 667 NOTE_INSN_DELETED) (jump_insn 4729 4728 4730 667 (set (pc) (if_then_else (gtu (subreg:SI (reg:HI 799 [ hrsi$word_no ]) 0) (const_int 1 [0x1])) (label_ref 4783) (pc))) "../../../src/gcc/gcc/hard-reg-set.h":311:7 20 {*cbranchsi4} (int_list:REG_BR_PROB 39298956 (nil)) -> 4783) allowing combination of insns 4727 and 4728 original costs 4 + 4 = 8 replacement cost 4 deferring deletion of insn with uid = 4727. modifying insn i3 4728: r2326:SI=r799:HI#0&0x3 deferring rescan insn with uid = 4728. allowing combination of insns 4728 and 4729 original costs 4 + 4 = 8 replacement cost 4 deferring deletion of insn with uid = 4728. modifying insn i3 4729: pc={(gtu(r799:HI#0,0x1))?L4783:pc} REG_BR_PROB 39298956 deferring rescan insn with uid = 4729.
