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Jit64: Optimize mcrfs when mask == 0

This commit is contained in:
JosJuice 2021-06-18 18:26:49 +02:00
parent 79a610b4b4
commit b11b5955ae
1 changed files with 10 additions and 4 deletions
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10
Source/Core/Core/PowerPC/Jit64/Jit_SystemRegisters.cpp
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@ -638,20 +638,26 @@ void Jit64::mcrfs(UGeckoInstruction inst)
// Only clear exception bits (but not FEX/VX).
mask &= FPSCR_FX | FPSCR_ANY_X;
MOV(32, R(RSCRATCH), PPCSTATE(fpscr));
if (cpu_info.bBMI1)
{
MOV(32, R(RSCRATCH), PPCSTATE(fpscr));
MOV(32, R(RSCRATCH2), Imm32((4 << 8) | shift));
BEXTR(32, RSCRATCH2, R(RSCRATCH), RSCRATCH2);
}
else
{
MOV(32, R(RSCRATCH2), R(RSCRATCH));
MOV(32, R(RSCRATCH2), PPCSTATE(fpscr));
if (mask != 0)
MOV(32, R(RSCRATCH), R(RSCRATCH2));
SHR(32, R(RSCRATCH2), Imm8(shift));
AND(32, R(RSCRATCH2), Imm32(0xF));
}
if (mask != 0)
{
AND(32, R(RSCRATCH), Imm32(~mask));
MOV(32, PPCSTATE(fpscr), R(RSCRATCH));
}
LEA(64, RSCRATCH, MConst(PowerPC::ConditionRegister::s_crTable));
MOV(64, R(RSCRATCH), MComplex(RSCRATCH, RSCRATCH2, SCALE_8, 0));
MOV(64, CROffset(inst.CRFD), R(RSCRATCH));