https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99927
--- Comment #9 from Segher Boessenkool <segher at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #5)
> But what is wrong is that try_combine has been called at all, because
> (reg:CCZ 17 flags) is used in 3 instructions rather than just one.
That is not a problem; If that were true it just would mean that
added_sets_2 should be set:
added_sets_2 = !dead_or_set_p (i3, i2dest);
But, the flags reg actually *is* dead in i3 (insn 108), it dies in i2
(insn 107):
(expr_list:REG_DEAD (reg:SI 107)
So something earlier is bad already.
