I agree in general, and yes, I always use a profiler before writing these intrinsics. But still, that particular clang output is suboptimal. They have already

I agree in general, and yes, I always use a profiler before writing these intrinsics. But still, that particular clang output is suboptimal. They have already optimized loads with these shuffles. I think they did 80% of the work already. They are just using the wrong shuffles.