From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Wed, 23 Jun 2021 13:48:31 +0000 (+0100)
Subject: add comments for SVP64 FP FFT/DCT
X-Git-Tag: xlen-bcd~415
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=8b51bb8a72451dd8ac42dbffd5ba5f92cf3aca26;p=openpower-isa.git

add comments for SVP64 FP FFT/DCT
---

diff --git a/openpower/isa/svfparith.mdwn b/openpower/isa/svfparith.mdwn
index 4e457e72..ea2a4a8d 100644
--- a/openpower/isa/svfparith.mdwn
+++ b/openpower/isa/svfparith.mdwn
@@ -1,6 +1,10 @@
 <!-- SVP64 FP Instructions here described are based on -->
 <!--  PowerISA Version 3.0 B Book 1 -->
 
+<!-- FRS in each of these does not need to be explicitly declared -->
+<!-- FRS is automatically calculated by SVP64 to FRT+VL (default elwidth) -->
+<!-- (Vector FRS data sequentially starts immediately after FRT vectors) -->
+
 # Floating Add FFT/DCT [Single]
 
 A-Form