From: lkcl <lkcl@web>
Date: Sun, 6 Dec 2020 16:50:20 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: convert-csv-opcode-to-binary~1494
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f61ab17724bb60a6c5b4c3ca1bd69532b97d6d74;p=libreriscv.git

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diff --git a/openpower/sv/svp_rewrite/svp64/discussion.mdwn b/openpower/sv/svp_rewrite/svp64/discussion.mdwn
new file mode 100644
index 000000000..23c8cdb76
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+# Notes on requirements for bit allocations
+
+* 2: SUBVL
+* 2: elwidth
+* 2: twin-predication (src, dest) elwidth
+* 1: select INT or CR predication
+* 3: predicate selection and inversion (QTY 2 for tpred)
+* 4x2 or 3x3: src1/2/3/dest Vector/Scalar reg
+
+totals: 22 bits leaving 2 spare for further modes.
+
+http://lists.libre-soc.org/pipermail/libre-soc-dev/2020-December/001434.html