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PPU: MTOCRF optimization

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This commit is contained in:
Nekotekina 2017-06-28 20:33:18 +03:00
parent ef55d6fa0c
commit 85f8a42bd2
3 changed files with 62 additions and 17 deletions
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39
rpcs3/Emu/Cell/PPUTranslator.cpp
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@ -2347,16 +2347,45 @@ void PPUTranslator::MTOCRF(ppu_opcode_t op)
// MTCRF
}
const auto value = GetGpr(op.rs);
static u8 s_table[64]
{
0, 0, 0, 0,
0, 0, 0, 1,
0, 0, 1, 0,
0, 0, 1, 1,
0, 1, 0, 0,
0, 1, 0, 1,
0, 1, 1, 0,
0, 1, 1, 1,
1, 0, 0, 0,
1, 0, 0, 1,
1, 0, 1, 0,
1, 0, 1, 1,
1, 1, 0, 0,
1, 1, 0, 1,
1, 1, 1, 0,
1, 1, 1, 1,
};
if (!m_mtocr_table)
{
m_mtocr_table = new GlobalVariable(*m_module, ArrayType::get(GetType<u8>(), 64), true, GlobalValue::PrivateLinkage, ConstantDataArray::get(m_context, s_table));
}
const auto value = GetGpr(op.rs, 32);
for (u32 i = 0; i < 8; i++)
{
if (op.crm & (128 >> i))
{
for (u32 bit = i * 4; bit < i * 4 + 4; bit++)
{
SetCrb(bit, Trunc(m_ir->CreateLShr(value, 31 - bit), GetType<bool>()));
}
// Discard pending values
std::fill_n(m_cr + i * 4, 4, nullptr);
std::fill_n(m_g_cr + i * 4, 4, nullptr);
const auto index = m_ir->CreateAnd(m_ir->CreateLShr(value, 28 - i * 4), 15);
const auto src = m_ir->CreateGEP(m_mtocr_table, {m_ir->getInt32(0), m_ir->CreateShl(index, 2)});
const auto dst = m_ir->CreateBitCast(m_ir->CreateStructGEP(nullptr, m_thread, m_cr - m_locals + i * 4), GetType<u8*>());
Call(GetType<void>(), "llvm.memcpy.p0i8.p0i8.i32", dst, src, m_ir->getInt32(4), m_ir->getInt32(4), m_ir->getFalse());
}
}
}