[Bug target/125640] MAX(x, -1) can use orr with ash operand

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125640

--- Comment #2 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
Something for match.pd?  The simplification is generic.