[Libre-soc-bugs] [Bug 653] investigate FFT, DCT, etc for REMAP in SVP64

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=653

--- Comment #21 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
LD-bitreverse does not work for iDCT due to needing to be bitreversed *and*
half-swapped... those operations being applied in the *opposite* order from
DCT.

therefore LD-bitreverse needs to be downgraded to LD-shift and it is REMAP that
needs the bitrev-halfswap and halfswap-bitrev modes.

this makes LD-shift less of a priority

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