SSE et al are mostly helpful if you have code either using these
instructions directly (assembly, intrinsics) or being written in a way
that the optimizer can easily take advantage of (see what Thiago wrote).

For general application code they generally do very little if anything
by themselves.


On 02/09/2018 05:15 PM, Eric Lemanisser wrote:
> Qt is built with SSE2 by default since 5.3.0. Is there a reason for not
> enabling by default SSE2 for application compilation ? If not I'll start
> working on a change doing that.
> Also, any plan migrating to SSE3 or SSSE3 ?
> Eric Lemanissier
Interest mailing list

Reply via email to