[Libre-soc-bugs] [Bug 734] add Partitioned SimdSignal support for elwidth-based layouts (currently ElwidPartType)

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Sat Oct 23 16:40:33 BST 2021


--- Comment #4 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Luke Kenneth Casson Leighton from comment #3)

> 1) changes to the ALUs
> 2) the new SimdSignal

by moving the scalar-emulation to a util function there are 3 tests
that can be done. actually, 4:

1) existing scalar
2) scalar-emulation
3) SIMD with elwidth=0b00
4) SIMD with other elwidths (vs scalar with an equivalent XLEN)

this last one will be fun / interesting, and justifies doing scalar
XLEN=32/16/8 HDL, fascinatingly.

so, please don't *delete* the scalar-emulation, move it to a util function
that can ve used during establishing PSpec at runtime/config.
should be very interesting and useful.

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