[Bug ipa/127967] [14/15/16/17 Regression] wrong code at -O2 with bit-field of a struct passed by value (ipa-cp)

[lzy20000419 at outlook dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127967

--- Comment #3 from liu zhenyu <lzy20000419 at outlook dot com> ---
Disclaimer: This test case was generated by a fuzzer, and the report was
written with LLM assistance.