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SPU LLVM: Use VDBPSADBW in SUMB

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- This instruction can be used to sum bytes horrizontally if the second input vector is all zeroes.
This commit is contained in:
Malcolm Jestadt 2021-09-26 04:40:47 -04:00 committed by Ivan
parent 8b3a3e4ac8
commit f9ab077908
2 changed files with 32 additions and 0 deletions
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15
rpcs3/Emu/CPU/CPUTranslator.h
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@ -3366,6 +3366,21 @@ public:
return result;
}
template <typename T1, typename T2>
value_t<u8[16]> vdbpsadbw(T1 a, T2 b, u8 c)
{
value_t<u8[16]> result;
const auto data0 = a.eval(m_ir);
const auto data1 = b.eval(m_ir);
const auto immediate = (llvm_const_int<u32>{c});
const auto imm8 = immediate.eval(m_ir);
result.value = m_ir->CreateCall(get_intrinsic(llvm::Intrinsic::x86_avx512_dbpsadbw_128), {data0, data1, imm8});
return result;
}
template <typename T1, typename T2>
value_t<u8[16]> vpermb(T1 a, T2 b)
{

17
rpcs3/Emu/Cell/SPURecompiler.cpp
View File

@ -7022,6 +7022,23 @@ public:
void SUMB(spu_opcode_t op)
{
if (m_use_avx512)
{
const auto [a, b] = get_vrs<u8[16]>(op.ra, op.rb);
const auto zeroes = splat<u8[16]>(0);
if (op.ra == op.rb && !m_interp_magn)
{
set_vr(op.rt, vdbpsadbw(a, zeroes, 0));
return;
}
const auto ax = vdbpsadbw(a, zeroes, 0);
const auto bx = vdbpsadbw(b, zeroes, 0);
set_vr(op.rt, shuffle2(ax, bx, 0, 8, 2, 10, 4, 12, 6, 14));
return;
}
if (m_use_vnni)
{
const auto [a, b] = get_vrs<u32[4]>(op.ra, op.rb);