From f11442b94d4b9a280f34be30d3f0ae35dee586dc Mon Sep 17 00:00:00 2001 From: Luke Kenneth Casson Leighton Date: Tue, 24 Apr 2018 11:34:17 +0100 Subject: [PATCH] clarify --- simple_v_extension.mdwn | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/simple_v_extension.mdwn b/simple_v_extension.mdwn index bd4c44b2e..59f7d6b12 100644 --- a/simple_v_extension.mdwn +++ b/simple_v_extension.mdwn @@ -379,6 +379,10 @@ Notes: as opposed to having the predicate register explicitly in the instruction. * Whilst the predication CSR is a key-value store it *generates* easier-to-use state information. +* TODO: assess whether the same technique could be applied to the other + Vector CSRs, particularly as pointed out in Section 17.8 (Draft RV 0.4, + V2.3-Draft ISA Reference) it becomes possible to greatly reduce state + needed for context-switches (empty slots need never be stored). ## Predication CSR -- 2.30.2