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lkcl
<lkcl@web>
Sat, 21 May 2022 13:46:34 +0000
(14:46 +0100)
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IkiWiki
<ikiwiki.info>
Sat, 21 May 2022 13:46:34 +0000
(14:46 +0100)
openpower/sv/bitmanip.mdwn
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diff --git
a/openpower/sv/bitmanip.mdwn
b/openpower/sv/bitmanip.mdwn
index d2c8885042fba6bd78723a6e4adab41dea54abfc..7bf2182d5bb0334057612f2d7f46147487f61203 100644
(file)
--- a/
openpower/sv/bitmanip.mdwn
+++ b/
openpower/sv/bitmanip.mdwn
@@
-421,7
+421,8
@@
uint_xlen_t bmextrev(RA, RB, sh)
# grevlut
-([3x lower latency alternative](grev_gorc_design/))
+([3x lower latency alternative](grev_gorc_design/) which is
+not equivalent and has limited constant-generation capability)
generalised reverse combined with a pair of LUT2s and allowing
a constant `0b0101...0101` when RA=0, and an option to invert