https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109566
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ah, but that actually isn't the problem, rather just useless clutter.
The problem is that
(jump_insn 10 7 32 2 (parallel [
(set (pc)
(if_then_else (eq (and:DI (reg:DI 9 9 [121])
(const_int 2146435072 [0x7ff00000]))
(const_int 0 [0]))
(label_ref:SI 40)
(pc)))
(clobber (reg:DI 9 9 [125]))
(clobber (reg:CC 100 0))
]) "pr109566-3.c":6:6 229 {*branch_anddi3_dot}
(int_list:REG_BR_PROB 708669604 (nil))
-> 40)
is split into:
(insn 43 7 44 2 (parallel [
(set (reg:CC 100 0)
(compare:CC (and:DI (ashift:DI (reg:DI 9 9 [121])
(const_int 33 [0x21]))
(const_int -9007199254740992 [0xffe0000000000000]))
(const_int 0 [0])))
(clobber (reg:DI 9 9 [125]))
]) "pr109566-3.c":6:6 -1
(nil))
(jump_insn 44 43 32 2 (set (pc)
(if_then_else (eq:CCEQ (reg:CC 100 0)
(const_int 0 [0]))
(label_ref 40)
(pc))) "pr109566-3.c":6:6 -1
(int_list:REG_BR_PROB 708669604 (nil))
-> 40)
and the first instruction isn't recognized.
