Both vector arguments were being used in a punpckl instruction, while the shuffle mask repeats elements from just the first vector. BUG=swiftshader:15 Change-Id: I8e29c252ee4957692c4949e724ae67253b423e89 Reviewed-on: https://chromium-review.googlesource.com/399419Reviewed-by: Jim Stichnoth <stichnot@chromium.org> Tested-by: Nicolas Capens <nicolascapens@google.com>
