On Tue, 19 Aug 2025 20:57:31 +0100, Rupert Reynolds <rupertreyno...@gmail.com> wrote:
>Last I heard was when MVCL and CLCL had been improved to beat multiple MVC >and CLC in most cases. Is this true? That surprises me because microcode could use this same MVC logic. There are hidden benefits in using MVCL. It's interruptible and updates the registers meaning it can prefetch storage while it's moving storage. MVC is going to wait for the 256 bytes to move. For MVC, prefetch can only occur if the pipeline can figure it out.
