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Jit64: add FMA4 support to fmaddXX

This commit is contained in:
Tillmann Karras 2015-05-17 10:20:02 +02:00
parent 8db6588bb9
commit 794a311b11
1 changed files with 33 additions and 0 deletions
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33
Source/Core/Core/PowerPC/Jit64/Jit_FloatingPoint.cpp
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@ -184,6 +184,39 @@ void Jit64::fmaddXX(UGeckoInstruction inst)
break;
}
}
else if (cpu_info.bFMA4 && !Core::g_want_determinism)
{
fpr.BindToRegister(b, true, false);
switch (inst.SUBOP5)
{
case 28: //msub
if (packed)
VFMSUBPD(XMM1, XMM1, fpr.R(a), fpr.RX(b));
else
VFMSUBSD(XMM1, XMM1, fpr.R(a), fpr.RX(b));
break;
case 14: //madds0
case 15: //madds1
case 29: //madd
if (packed)
VFMADDPD(XMM1, XMM1, fpr.R(a), fpr.RX(b));
else
VFMADDSD(XMM1, XMM1, fpr.R(a), fpr.RX(b));
break;
case 30: //nmsub
if (packed)
VFNMADDPD(XMM1, XMM1, fpr.R(a), fpr.RX(b));
else
VFNMADDSD(XMM1, XMM1, fpr.R(a), fpr.RX(b));
break;
case 31: //nmadd
if (packed)
VFNMSUBPD(XMM1, XMM1, fpr.R(a), fpr.RX(b));
else
VFNMSUBSD(XMM1, XMM1, fpr.R(a), fpr.RX(b));
break;
}
}
else if (inst.SUBOP5 == 30) //nmsub
{
// We implement nmsub a little differently ((b - a*c) instead of -(a*c - b)), so handle it separately.