[Bug lto/69254] [6 Regression] ICE in streamer_get_builtin_tree when using -fsanitize=shift on the compile side only

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69254

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think this will require moving out the common_handle_option handling of
-fsanitize{,-recover}= arguments (parsing them into a bitmask) into a separate
function, because lto-wrapper seems to look at unparsed options.