https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88466
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Duarte from comment #2) > One option could be to just use whatever values linux uses :) The linux kernel allows the cache line sizes to be set at boot (for some h/w) which doesn't really map well to a constexpr variable with a fixed value. So far the state of the art seems to be "just set them both to 64" which is a bit pointless. We don't need two incredibly verbose ways to spell the constant 64. We probably want a target hook, so that different target backends can customise the value for different hardware revisions (potentially with target-specific command-line flags to override it). Or we just set them both to 64.
