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SPU LLVM: Fix vgf2p8affineqb usage

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- Reverse the order of the bytes in the selection masks. Previously it was assumed that byte 0 would determine the output of bit 0, but byte 7 determines the output of bit 0.
This commit is contained in:
Malcolm Jestadt 2021-12-05 17:23:05 -05:00 • committed by Ivan
parent cb4711203b
commit 0617e9e14b
1 changed files with 2 additions and 2 deletions
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4
rpcs3/Emu/Cell/SPURecompiler.cpp
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@ -7660,7 +7660,7 @@ public:
return;
}
const auto m = gf2p8affineqb(c, build<u8[16]>(0x40, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x40, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20), 0x7f);
const auto m = gf2p8affineqb(c, build<u8[16]>(0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x40, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x40), 0x7f);
const auto mm = select(noncast<s8[16]>(m) >= 0, splat<u8[16]>(0), m);
const auto ab = vperm2b256to128(as, bs, c);
set_vr(op.rt4, select(noncast<s8[16]>(c) >= 0, ab, mm));
@ -7722,7 +7722,7 @@ public:
return;
}
const auto m = gf2p8affineqb(c, build<u8[16]>(0x40, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x40, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20), 0x7f);
const auto m = gf2p8affineqb(c, build<u8[16]>(0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x40, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x40), 0x7f);
const auto mm = select(noncast<s8[16]>(m) >= 0, splat<u8[16]>(0), m);
const auto cr = eval(~c);
const auto ab = vperm2b256to128(b, a, cr);