https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94467
--- Comment #4 from Zdenek Sojka <zsojka at seznam dot cz> --- (In reply to Richard Biener from comment #2) > Note using __builtin_ia32_* directly is discouraged. A testcase using > official intrinsics would be better. Thanks; I just took the list from https://gcc.gnu.org/onlinedocs/gcc/x86-Built-in-Functions.html (it has some mistakes though; I hope to list & report them 'when I have time for that'). I assume using the intrinsics will be a bit complicated, because creduce will probably expand/inline them by default to the __builtin_ia32_*() call.