cmd/internal/obj/arm64: move register encoding into oprrr
Rather than having register encoding knowledge in each caller of oprrr,
pass the registers into oprrr and let it handle the encoding. This reduces
duplication and improves readability.
Change-Id: Iab6c70f7796b7a8c071419654b8a5686aeee8c1b
Reviewed-on: https://go-review.googlesource.com/c/go/+/471518 Reviewed-by: Fannie Zhang <Fannie.Zhang@arm.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Cherry Mui <cherryyz@google.com>