Comment 19 for bug 612377

(In reply to comment #4)
> Jpeg-simd would have to be ported to 64-bit which from what I have read is a
> cumbersome task.

From the diffs between the 64-bit version and the 32-bit version it seems that the process would be mostly mechanical. In fact, it should be possible to use the same source for 64-bit as 32-bit like libvpx does. Further, the 64-bit versions in libjpeg-turbo should be under the same license as jpeg-simd so we should be able to just use them directly.