(no commit message)

diff --git a/openpower/sv/bitmanip.mdwn b/openpower/sv/bitmanip.mdwn
index 3ed51ae91ae45d982d686fe8c41878acda82e5e0..99b558778d4bdff385a906987fbadc888afd2c6c 100644 (file)
--- 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 />
 
 ```