[Bug target/94892] (x >> 31) + 1 not getting narrowed to compare

[gabravier at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94892

--- Comment #2 from Gabriel Ravier <gabravier at gmail dot com> ---
In that case, then, GCC is generating sub-optimal code for `(x >> 31) + 1`
alone since it optimises that to the same thing as LLVM