archive/rpcs3
1
0
Fork 0
mirror of https://github.com/RPCS3/rpcs3.git synced 2025-07-09 00:11:24 +12:00
Code Issues Projects Releases Packages Wiki Activity Actions

Optimize SPU interpreter

Browse source 
Made SPU decoder similar to PPU decoder
This commit is contained in:
Nekotekina 2018-02-27 19:03:00 +03:00
parent 53f8b03acc
commit 445b7c0758
5 changed files with 797 additions and 528 deletions
Download patch file Download diff file Expand all files Collapse all files

75
rpcs3/Emu/Cell/SPUThread.cpp
View file

@ -32,6 +32,7 @@ const bool s_use_ssse3 =
true;
#else
false;
#define _mm_shuffle_epi8
#endif
#ifdef _MSC_VER
@ -388,25 +389,75 @@ void SPUThread::cpu_task()
g_cfg.core.spu_decoder == spu_decoder_type::fast ? &g_spu_interpreter_fast.get_table() :
(fmt::throw_exception<std::logic_error>("Invalid SPU decoder"), nullptr));
// LS base address
const auto base = vm::_ptr<const u32>(offset);
// LS pointer
const auto base = vm::_ptr<const u8>(offset);
const auto bswap4 = _mm_set_epi8(12, 13, 14, 15, 8, 9, 10, 11, 4, 5, 6, 7, 0, 1, 2, 3);
v128 _op;
using func_t = decltype(&spu_interpreter::UNK);
func_t func0, func1, func2, func3, func4, func5;
while (true)
{
if (!test(state) || !check_state())
if (UNLIKELY(test(state)))
{
// Read opcode
const u32 op = base[pc / 4];
// Call interpreter function
table[spu_decode(op)](*this, { op });
// Next instruction
pc += 4;
if (check_state()) return;
// Decode single instruction (may be step)
const u32 op = *reinterpret_cast<const be_t<u32>*>(base + pc);
if (table[spu_decode(op)](*this, {op})) { pc += 4; }
continue;
}
return;
if (pc % 16 || !s_use_ssse3)
{
// Unaligned
const u32 op = *reinterpret_cast<const be_t<u32>*>(base + pc);
if (table[spu_decode(op)](*this, {op})) { pc += 4; }
continue;
}
// Reinitialize
_op.vi = _mm_shuffle_epi8(_mm_load_si128(reinterpret_cast<const __m128i*>(base + pc)), bswap4);
func0 = table[spu_decode(_op._u32[0])];
func1 = table[spu_decode(_op._u32[1])];
func2 = table[spu_decode(_op._u32[2])];
func3 = table[spu_decode(_op._u32[3])];
while (LIKELY(func0(*this, {_op._u32[0]})))
{
pc += 4;
if (LIKELY(func1(*this, {_op._u32[1]})))
{
pc += 4;
u32 op2 = _op._u32[2];
u32 op3 = _op._u32[3];
_op.vi = _mm_shuffle_epi8(_mm_load_si128(reinterpret_cast<const __m128i*>(base + pc + 8)), bswap4);
func0 = table[spu_decode(_op._u32[0])];
func1 = table[spu_decode(_op._u32[1])];
func4 = table[spu_decode(_op._u32[2])];
func5 = table[spu_decode(_op._u32[3])];
if (LIKELY(func2(*this, {op2})))
{
pc += 4;
if (LIKELY(func3(*this, {op3})))
{
pc += 4;
func2 = func4;
func3 = func5;
if (UNLIKELY(test(state)))
{
break;
}
continue;
}
break;
}
break;
}
break;
}
}
}