[Bug middle-end/126899] backward threader rejects joiner-style threads on statement count that DOM can thread

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126899

--- Comment #2 from Drea Pinski <pinskia at gcc dot gnu.org> ---
>so it looks like the problem here is the cost model.

Or maybe really DOM's lack of one.