[Libre-soc-bugs] [Bug 745] OP_TERNLOG instruction

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=745

--- Comment #39 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
commit 8abcd7b74c5416c8a5348efc467854ad3080f12f (HEAD -> master)
Author: Luke Kenneth Casson Leighton <lkcl at lkcl.net>
Date:   Sat Dec 11 15:13:15 2021 +0000

    use concat in ternlogi to reduce code size

works.

     result <- [0] * XLEN
-    idx <- [0] * 3
     do i = 0 to XLEN - 1
-      idx[0] <- (RT)[i]
-      idx[1] <- (RA)[i]
-      idx[2] <- (RB)[i]
+      idx <- (RT)[i] || (RA)[i] || (RB)[i]

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