From: lkcl <lkcl@web>
Date: Fri, 18 Dec 2020 20:56:00 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: convert-csv-opcode-to-binary~1213
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=75466c933cde5d1457a4453416c49758874da038;p=libreriscv.git

---

diff --git a/openpower/sv/svp_rewrite/svp64.mdwn b/openpower/sv/svp_rewrite/svp64.mdwn
index 68806708d..9850931a9 100644
--- a/openpower/sv/svp_rewrite/svp64.mdwn
+++ b/openpower/sv/svp_rewrite/svp64.mdwn
@@ -242,6 +242,8 @@ the default for SUBVL is 1 and its encoding is 0b00 to indicate that SUBVL is ef
 | 10          | `SUBVL=3`           | Sub-vector length of 3 |
 | 11          | `SUBVL=4`           | Sub-vector length of 4 |
 
+The SUBVL encoding value may be thought of as an inclusive range of a sub-vector.  SUBVL=2 represents a vec2, its encoding is 0b01, therefore this may be considered to be elements 0b00 to 0b01 inclusive.
+
 ## MASK/MASK_SRC & MASK_KIND Encoding
 
 One bit (`MASKMODE`) indicates the mode: CR or Int predication.   The two types may not be mixed.