ChanServ changed the topic of #dri-devel to: <ajax> nothing involved with X should ever be unable to find a bar
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<lensesonthere>
Intermediate gibberish matters few, my mission was to get some englihtenment through mental work, and get all howto items down, i talked incorrect and shortsighted visions out, so but with end results i am satisified in thinking genre. I know very well GCN internals which i still consider one of the most powerful graphics card ever made, and i read the code of meow very long, simulated
<lensesonthere>
all benches and dumped the numbers and draw schemes of wavefront orders with gtkwave, and it was the most complex hardware i ever saw among the commodity lines. So hence i became very good at understanding the technology throughout those years, and the endgoal was the all important, not the intermediate mistakes i did. There are no such releases among humans who know so much as i do,
<lensesonthere>
there are very few to reach to at such level, i faught to black outs really every day as of late, and i am proud of myself that i never gave up it will be useful for a foundation of general success possibly in second stage of my life, so i resign with honor and positive state as of now.
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<Lynne>
wrote a piece of code that runs much faster when using BDA than regular array accesses+inout everywhere
<Lynne>
who said they're useless and the overhead isn't worth it?
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<Lynne>
it does take uncomfortably long to be compiled to spirv, apparently the compiler chokes on it
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<Ermine>
have you shut your fdo gitlab account down?
<dviola>
Ermine: I deleted the old account by mistake and created another one
<Ermine>
oic
<dviola>
I asked if my new account could be assigned to the old one that is now a ghost user but I never got a reply on that
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<dviola>
s/assigned/merged/
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<alyssa>
robclark: is amul signed or unsigned?
<alyssa>
it's defined as undefined for overflow but not specifying which overflow so i'm a bit confused
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<robclark>
alyssa: hmm, looks like it lowers to imul or imul24.. although pre-caffeine I don't remember why you want signed address math. I guess so negative array indices work?
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<alyssa>
robclark: yeah, that's what i'm struggling to wrap my head around
<alyssa>
(are there cases where negative array indices don't hit UB? I genuinely unsure)
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<robclark>
I think things like `foo = &bar[5]; blah = &foo[1];` are allowed.. imul24 is defined to sign extend the result to 32b
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<alyssa>
hmm
<alyssa>
it's kinda funny
<alyssa>
the hw addressing mode is clearly designed for C
<alyssa>
and glsl is.. not C
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<robclark>
hopefully the hw works similar to the various ldg/stg on adreno.. because some day I'll have to figure out how to fold 32b offset calc into ldg/stg, similar to what you are trying to do (but haven't really had time to look more closely at your MR yet)
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<alyssa>
*nod*
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<alyssa>
the annoying part for me is that the shift is mandatory
<alyssa>
I can't do 64-bit + bytes offset addressing
<alyssa>
only 64-bit + word offset
<alyssa>
and since nir_lower_io gives me bytes...
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