From c4a0832949243dbe7c9eb49f566bee347999d298 Mon Sep 17 00:00:00 2001 From: lkcl Date: Sun, 21 Aug 2022 14:21:04 +0100 Subject: [PATCH] --- openpower/sv/ldst.mdwn | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/openpower/sv/ldst.mdwn b/openpower/sv/ldst.mdwn index 0f65bd84c..3c7a34456 100644 --- a/openpower/sv/ldst.mdwn +++ b/openpower/sv/ldst.mdwn @@ -292,6 +292,12 @@ Indexed LD is: Note in both cases that [[sv/svp64]] allows RA-as-a-dest in "update" mode (`ldux`) to be effectively a *completely different* register from RA-as-a-source. This because there is room in svp64 to extend RA-as-src as well as RA-as-dest, both independently as scalar or vector *and* independently extending their range. +*Programmer's note: being able to set RA-as-a-source to Vector + but RA-as-a-destination as Scalar is **extremely valuable** + once it is remembered that Simple-V element operations must + be in Program Order. What that means is that the very last + update to RA will * + # LD/ST Indexed vs Indexed REMAP Unfortunately the word "Indexed" is used twice in completely different -- 2.30.2