[Bug target/102205] vec + 1 could be done as vec - (-1)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102205

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So ICC does the same as GCC while ICX does the same as LLVM (most likely
because it is LLVM based).