[Bug rtl-optimization/103829] [12/13/14/15 Regression] missing shrink wrapping for simple/obvious code

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103829

--- Comment #6 from Sam James <sjames at gcc dot gnu.org> ---
I can bisect if you can give me a nice pattern that you think is reliable. The
instruction count is too close (5) for it to be worth me doing it naively, I
think.