https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79518
--- Comment #2 from Evan Nemerson <e...@coeus-group.com> --- (In reply to Andrew Pinski from comment #1) > Why can't you use: > #define __assume_aligned(arg, align) arg = __builtin_assume_aligned > (arg, align) > > ? arg may be read-only. void* const arg = ...; __assume_aligned(arg, 16) arg is also evaluated twice, though I'm not sure how much of a problem that would be in this situation, or how helpful __assume_aligned would be for other compilers where it would matter…
