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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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37
rpcs3/Emu/Cell/PPUInterpreter.cpp
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@ -3420,6 +3420,26 @@ bool ppu_interpreter::ADDE(ppu_thread& ppu, ppu_opcode_t op)
bool ppu_interpreter::MTOCRF(ppu_thread& ppu, ppu_opcode_t op)
{
static u8 s_table[16][4]
{
{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},
};
const u64 s = ppu.gpr[op.rs];
if (op.l11)
@ -3428,11 +3448,8 @@ bool ppu_interpreter::MTOCRF(ppu_thread& ppu, ppu_opcode_t op)
const u32 n = cntlz32(op.crm) & 7;
const u32 p = n * 4;
const u64 v = s >> (p ^ 0x1c);
ppu.cr[p + 0] = (v & 8) != 0;
ppu.cr[p + 1] = (v & 4) != 0;
ppu.cr[p + 2] = (v & 2) != 0;
ppu.cr[p + 3] = (v & 1) != 0;
const u64 v = (s >> (p ^ 0x1c)) & 0xf;
*(u32*)(u8*)(ppu.cr + p) = *(u32*)(s_table + v);
}
else
{
@ -3440,15 +3457,11 @@ bool ppu_interpreter::MTOCRF(ppu_thread& ppu, ppu_opcode_t op)
for (u32 i = 0; i < 8; i++)
{
const u32 p = i * 4;
const u64 v = s >> (p ^ 0x1c);
if (op.crm & (128 >> i))
{
ppu.cr[p + 0] = (v & 8) != 0;
ppu.cr[p + 1] = (v & 4) != 0;
ppu.cr[p + 2] = (v & 2) != 0;
ppu.cr[p + 3] = (v & 1) != 0;
const u32 p = i * 4;
const u64 v = (s >> (p ^ 0x1c)) & 0xf;
*(u32*)(u8*)(ppu.cr + p) = *(u32*)(s_table + v);
}
}
}