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SPU LLVM: implement missing constant mask handling in SHUFB

This commit is contained in:
Nekotekina 2021-09-01 19:34:07 +03:00
parent 7cf9d1380b
commit 144244e902
1 changed files with 33 additions and 15 deletions
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48
rpcs3/Emu/Cell/SPURecompiler.cpp
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@ -7552,23 +7552,41 @@ public:
return;
}
}
// Generic constant shuffle without constant-generation bits
mask = mask ^ v128::from8p(0x1f);
if (op.ra == op.rb)
{
mask = mask & v128::from8p(0xf);
}
const auto a = get_vr<u8[16]>(op.ra);
const auto b = get_vr<u8[16]>(op.rb);
const auto c = make_const_vector(mask, get_type<u8[16]>());
set_reg_fixed(op.rt4, m_ir->CreateShuffleVector(b.value, op.ra == op.rb ? b.value : a.value, m_ir->CreateZExt(c, get_type<u32[16]>())));
return;
}
spu_log.todo("[0x%x] Const SHUFB mask: %s", m_pos, mask);
// Adjusted shuffle mask
v128 smask = ~mask & v128::from8p(op.ra == op.rb ? 0xf : 0x1f);
// Blend mask for encoded constants
v128 bmask{};
for (u32 i = 0; i < 16; i++)
{
if (mask._bytes[i] >= 0xe0)
bmask._bytes[i] = 0x80;
else if (mask._bytes[i] >= 0xc0)
bmask._bytes[i] = 0xff;
}
const auto a = get_vr<u8[16]>(op.ra);
const auto b = get_vr<u8[16]>(op.rb);
const auto c = make_const_vector(smask, get_type<u8[16]>());
const auto d = make_const_vector(bmask, get_type<u8[16]>());
llvm::Value* r = d;
if ((~mask._u64[0] | ~mask._u64[1]) & 0x8080808080808080) [[likely]]
{
r = m_ir->CreateShuffleVector(b.value, op.ra == op.rb ? b.value : a.value, m_ir->CreateZExt(c, get_type<u32[16]>()));
if ((mask._u64[0] | mask._u64[1]) & 0x8080808080808080)
{
r = m_ir->CreateSelect(m_ir->CreateICmpSLT(make_const_vector(mask, get_type<u8[16]>()), llvm::ConstantInt::get(get_type<u8[16]>(), 0)), d, r);
}
}
set_reg_fixed(op.rt4, r);
return;
}
const auto a = get_vr<u8[16]>(op.ra);