[Bug rtl-optimization/104054] [10/11/12/13 Regression] '-fcompare-debug' failure (length) w/ -Os -funroll-loops since r8-3946-gfe94440235cfaa57

[ubizjak at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104054

--- Comment #11 from Uroš Bizjak <ubizjak at gmail dot com> ---
The testcase now PASSes compare-debug with:

gcc version 13.0.1 20230203 (experimental) [master r13-5678-g167b04b9b8a] (GCC)

... but passes due to different register allocation, where regrename is not
triggered. The core of the problem (See Comment #8) remains unfixed, and it
will require some deep surgery into regrename pass.