[Bug target/121266] [16 regression] (x86) Missed an '-Os' optimization on setting a register value to -1

[Explorer09 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121266

--- Comment #2 from Kang-Che Sung <Explorer09 at gmail dot com> ---
Perhaps I missed the context here. What "false dependency" did the instruction
produce?