[Bug target/103743] PPC: Inefficient equality compare for large 64-bit constants having only 16-bit relevant bits in high part

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103743

--- Comment #6 from Jiu Fu Guo <guojiufu at gcc dot gnu.org> ---
Drafted a patch:
https://gcc.gnu.org/pipermail/gcc-patches/2022-May/594702.html