From: lkcl <lkcl@web>
Date: Thu, 10 Dec 2020 01:52:08 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: convert-csv-opcode-to-binary~1449
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5134eb95c9699e7d2c99cc356b7c242b884a280f;p=libreriscv.git

---

diff --git a/openpower/sv/svp_rewrite/svp64/discussion.mdwn b/openpower/sv/svp_rewrite/svp64/discussion.mdwn
index 633719bba..71c81f411 100644
--- a/openpower/sv/svp_rewrite/svp64/discussion.mdwn
+++ b/openpower/sv/svp_rewrite/svp64/discussion.mdwn
@@ -13,10 +13,19 @@ http://lists.libre-soc.org/pipermail/libre-soc-dev/2020-December/001434.html
 
 ## twin predication
 
+something like:
+
 | 0   1 | 2 3 | 4 5 | 6    | 7  9 | 10 12 | 13 18 |
 | ----- | --- | --- | ---- | ---- | ----- | ----- |
 | subvl | sew | dew | ptyp | psrc | pdst  | vspec |
 
+* subvl - 1 to 4 scalar / vec2 / vec3 / vec4
+* sew / dew - DEFAULT / 8 / 16 /32 element width
+* ptyp - predication INT / CR
+* psrc / pdst - predicate mask selector and inversion
+* vspec - 3 bit src / dest scalar-vector extension
+
+
 # Notes about Swizzle
 
 Basically, there isn't enough room to try to fit two src src1/2 swizzle, and SV, even into 64 bit (actually 24) without severely compromising on the number of bits allocated to either swizzle, or SV, or both.