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JitArm64: Drop two DUP() usages. 

And replace them with the aarch64 feature FMUL.
This skips one instruction in rarely used PPC instructions.

thx @ HdkR for spotting it.
This commit is contained in:
degasus 2016-10-25 22:26:54 +02:00
parent 9e21ac8607
commit 1a8a25cc93
1 changed files with 3 additions and 8 deletions
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11
Source/Core/Core/PowerPC/JitArm64/JitArm64_Paired.cpp
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@ -85,13 +85,10 @@ void JitArm64::ps_mulsX(UGeckoInstruction inst)
ARM64Reg VA = fpr.R(a, type);
ARM64Reg VC = fpr.R(c, type);
ARM64Reg VD = fpr.RW(d, type);
ARM64Reg V0 = fpr.GetReg();
m_float_emit.DUP(size, reg_encoder(V0), reg_encoder(VC), upper ? 1 : 0);
m_float_emit.FMUL(size, reg_encoder(VD), reg_encoder(VA), reg_encoder(V0));
m_float_emit.FMUL(size, reg_encoder(VD), reg_encoder(VA), reg_encoder(VC), upper ? 1 : 0);
fpr.FixSinglePrecision(d);
fpr.Unlock(V0);
}
void JitArm64::ps_maddXX(UGeckoInstruction inst)
@ -121,13 +118,11 @@ void JitArm64::ps_maddXX(UGeckoInstruction inst)
switch (op5)
{
case 14: // ps_madds0
m_float_emit.DUP(size, V0, VC, 0);
m_float_emit.FMUL(size, V0, V0, VA);
m_float_emit.FMUL(size, V0, VA, VC, 0);
m_float_emit.FADD(size, VD, V0, VB);
break;
case 15: // ps_madds1
m_float_emit.DUP(size, V0, VC, 1);
m_float_emit.FMUL(size, V0, V0, VA);
m_float_emit.FMUL(size, V0, VA, VC, 1);
m_float_emit.FADD(size, VD, V0, VB);
break;
case 28: // ps_msub