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PPU/SPU LLVM: Allow Zen4 cpus to use VPERMI2B/VPERMT2B instead of the vperm2b256to128 path

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- Zen4 based cpus can process VPERM2B in a single uop, unlike intel where it is 3 uops.
This commit is contained in:
Malcolm Jestadt 2022-09-30 17:39:24 -04:00 • committed by kd-11
parent 7d32dc312f
commit d8897c585d
5 changed files with 27 additions and 6 deletions
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10
rpcs3/Emu/Cell/SPURecompiler.cpp
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@ -8313,13 +8313,13 @@ public:
{
if (perm_only)
{
set_vr(op.rt4, vperm2b256to128(as, bs, c));
set_vr(op.rt4, vperm2b(as, bs, c));
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 mm = select(noncast<s8[16]>(m) >= 0, splat<u8[16]>(0), m);
const auto ab = vperm2b256to128(as, bs, c);
const auto ab = vperm2b(as, bs, c);
set_vr(op.rt4, select(noncast<s8[16]>(c) >= 0, ab, mm));
return;
}
@ -8371,18 +8371,18 @@ public:
}
}
if (m_use_avx512_icl && (op.ra != op.rb))
if (m_use_avx512_icl && (op.ra != op.rb || m_interp_magn))
{
if (perm_only)
{
set_vr(op.rt4, vperm2b256to128(a, b, eval(c ^ 0xf)));
set_vr(op.rt4, vperm2b(a, b, eval(c ^ 0xf)));
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 mm = select(noncast<s8[16]>(m) >= 0, splat<u8[16]>(0), m);
const auto cr = eval(c ^ 0xf);
const auto ab = vperm2b256to128(a, b, cr);
const auto ab = vperm2b(a, b, cr);
set_vr(op.rt4, select(noncast<s8[16]>(c) >= 0, ab, mm));
return;
}