[Bug target/79678] x86 (and other?) SIMD builtins have signedness issues

[jbeulich at novell dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79678

--- Comment #2 from jbeulich at novell dot com ---
(In reply to Richard Biener from comment #1)
> Just as a note you should always use intrinsics, not builtins.

Well, I probably would have, if there wasn't ...

> OTOH they return the generic __m128i and are thus not very useful in
> conjunction with the generic vector extensions.

... this issue.