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Jit64: micro-optimize ps_sel 

Adapted from a patch by konpie:
https://forums.dolphin-emu.org/Thread-code-bug-report-based-on-3-0-735
This commit is contained in:
Tillmann Karras 2013-11-07 03:38:04 +01:00
parent 6f5650f82e
commit 2fecb033be
1 changed files with 6 additions and 6 deletions
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12
Source/Core/Core/Src/PowerPC/Jit64/Jit_Paired.cpp
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@ -14,10 +14,9 @@
// cmppd, andpd, andnpd, or // cmppd, andpd, andnpd, or
// lfsx, ps_merge01 etc // lfsx, ps_merge01 etc
const u64 GC_ALIGNED16(psSignBits[2]) = {0x8000000000000000ULL, 0x8000000000000000ULL}; static const u64 GC_ALIGNED16(psSignBits[2]) = {0x8000000000000000ULL, 0x8000000000000000ULL};
const u64 GC_ALIGNED16(psAbsMask[2]) = {0x7FFFFFFFFFFFFFFFULL, 0x7FFFFFFFFFFFFFFFULL}; static const u64 GC_ALIGNED16(psAbsMask[2]) = {0x7FFFFFFFFFFFFFFFULL, 0x7FFFFFFFFFFFFFFFULL};
const double GC_ALIGNED16(psOneOne[2]) = {1.0, 1.0}; static const double GC_ALIGNED16(psOneOne[2]) = {1.0, 1.0};
const double GC_ALIGNED16(psZeroZero[2]) = {0.0, 0.0};
void Jit64::ps_mr(UGeckoInstruction inst) void Jit64::ps_mr(UGeckoInstruction inst)
{ {
@ -52,14 +51,15 @@ void Jit64::ps_sel(UGeckoInstruction inst)
fpr.Lock(a, b, c, d); fpr.Lock(a, b, c, d);
MOVAPD(XMM0, fpr.R(a)); MOVAPD(XMM0, fpr.R(a));
XORPD(XMM1, R(XMM1));
// XMM0 = XMM0 < 0 ? all 1s : all 0s // XMM0 = XMM0 < 0 ? all 1s : all 0s
CMPPD(XMM0, M((void*)psZeroZero), LT); CMPPD(XMM0, R(XMM1), LT);
MOVAPD(XMM1, R(XMM0)); MOVAPD(XMM1, R(XMM0));
ANDPD(XMM0, fpr.R(b)); ANDPD(XMM0, fpr.R(b));
ANDNPD(XMM1, fpr.R(c)); ANDNPD(XMM1, fpr.R(c));
ORPD(XMM0, R(XMM1));
fpr.BindToRegister(d, false); fpr.BindToRegister(d, false);
MOVAPD(fpr.RX(d), R(XMM0)); MOVAPD(fpr.RX(d), R(XMM0));
ORPD(fpr.RX(d), R(XMM1));
fpr.UnlockAll(); fpr.UnlockAll();
} }