From: lkcl <lkcl@web>
Date: Thu, 10 Mar 2022 00:17:20 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: opf_rfc_ls005_v1~3104
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e591924c38efd077e6922b7c7cc43c967bac2e2a;p=libreriscv.git

---

diff --git a/openpower/sv/bitmanip.mdwn b/openpower/sv/bitmanip.mdwn
index 3ed51ae91..99b558778 100644
--- a/openpower/sv/bitmanip.mdwn
+++ b/openpower/sv/bitmanip.mdwn
@@ -331,6 +331,10 @@ the two LUT2s are applied left-half (when not swapping)
 and right-half (when swapping) so as to allow a wider
 range of options
 
+grevlut should be arranged so as to produce the constants
+needed to put into bext (bitextract) so as in turn to
+be able to emulate x86 pmovmask instructions <https://www.felixcloutier.com/x86/pmovmskb>
+
 <img src="/openpower/sv/grevlut2x2.jpg" width=700 />
 
 ```