<chrisf>
it appears bifrost's comparison instructions produce 0,1 rather than 0,~0 :(
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<HdkR>
chrisf: You should be able to set some nir flags to let it know which float compare types you want the frontend to generate
<chrisf>
HdkR: im not sure where the controls are for that
<chrisf>
HdkR: i see we run the lower_bool_to_int32 pass
<HdkR>
ah yea, it's a pass not an option. Could just skip that :P
<chrisf>
HdkR: i guess what im really asking is -- is this actually the case? have we characterized these instructions? we seem very short on descriptions of exactly what we think things do :)
<chrisf>
i might just be looking in the wrong place, but we also seem short on exactly what nir opcodes are supposed to do :)
<HdkR>
It's been too long since I tinkered on it to remember how bifrost represents bools :P
<HdkR>
Easy enough way would be to generate a test shader and check the disassembly from the blob
<chrisf>
i suppose i should set up a second image to run the blob again :)
<HdkR>
Two devices is ideal :P
<chrisf>
sure
<HdkR>
Still would be nice if ARM ever documented their ISA encoding
<HdkR>
:)
<chrisf>
yeah, fat chance of that
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<chrisf>
HdkR: OK, how do i capture from the blob?
<chrisf>
oh, i see there's a fresher one in fdo panfrost/panloader
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* chrisf
frowns at the way the meson script is done for panloader
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<chrisf>
so i cant get a second odroid-go-advance-- is there anything wacky about the odroid-c4? i know there was something about amlogic's mali integration on the n2;
<HdkR>
Same SoC as the VIM3L. :)
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