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lkcl
<lkcl@web>
Sat, 26 Dec 2020 18:38:16 +0000
(18:38 +0000)
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IkiWiki
<ikiwiki.info>
Sat, 26 Dec 2020 18:38:16 +0000
(18:38 +0000)
openpower/sv/av_opcodes.mdwn
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a/openpower/sv/av_opcodes.mdwn
b/openpower/sv/av_opcodes.mdwn
index ce40f4d954a022c718186db973497f6927d7f590..5fc3883af2effc0d36b8a690117f7d3d94c4b137 100644
(file)
--- a/
openpower/sv/av_opcodes.mdwn
+++ b/
openpower/sv/av_opcodes.mdwn
@@
-11,6
+11,7
@@
The fundamental principle for these instructions is:
* identify the scalar primitive
* assume that longer runs of scalars will have Simple-V vectorisatin applied
* assume that "swizzle" may be applied at the (vec2 - SUBVL=2) Vector level,
+ (even if that involves a mv.swizxle which may be macro-op fused)
in order to perform the necessary HI/LO selection normally hard-coded
into SIMD ISAs.