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GS: Use insertps/blendps instead of shuffles 

Faster by one cycle on any CPU we care about these days.
This commit is contained in:
Stenzek 2024-04-30 01:38:00 +10:00 committed by Connor McLaughlin
parent 8e5b84b097
commit fd0c82c04a
1 changed files with 4 additions and 79 deletions
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83
pcsx2/GS/GSVector4.h
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@ -515,92 +515,17 @@ public:
template <int src, int dst>
__forceinline GSVector4 insert32(const GSVector4& v) const
{
// TODO: use blendps when src == dst
#if 0 // _M_SSE >= 0x401
// NOTE: it's faster with shuffles...
return GSVector4(_mm_insert_ps(m, v.m, _MM_MK_INSERTPS_NDX(src, dst, 0)));
#else
switch (dst)
{
case 0:
switch (src)
{
case 0: return yyxx(v).zxzw(*this);
case 1: return yyyy(v).zxzw(*this);
case 2: return yyzz(v).zxzw(*this);
case 3: return yyww(v).zxzw(*this);
default: ASSUME(0);
}
break;
case 1:
switch (src)
{
case 0: return xxxx(v).xzzw(*this);
case 1: return xxyy(v).xzzw(*this);
case 2: return xxzz(v).xzzw(*this);
case 3: return xxww(v).xzzw(*this);
default: ASSUME(0);
}
break;
case 2:
switch (src)
{
case 0: return xyzx(wwxx(v));
case 1: return xyzx(wwyy(v));
case 2: return xyzx(wwzz(v));
case 3: return xyzx(wwww(v));
default: ASSUME(0);
}
break;
case 3:
switch (src)
{
case 0: return xyxz(zzxx(v));
case 1: return xyxz(zzyy(v));
case 2: return xyxz(zzzz(v));
case 3: return xyxz(zzww(v));
default: ASSUME(0);
}
break;
default:
ASSUME(0);
}
#endif
if constexpr (src == dst)
return GSVector4(_mm_blend_ps(m, v.m, 1 << src));
else
return GSVector4(_mm_insert_ps(m, v.m, _MM_MK_INSERTPS_NDX(src, dst, 0)));
}
#ifdef __linux__
#if 0
// Debug build error, _mm_extract_ps is actually a macro that use an anonymous union
// that contains i. I decide to rename the template on linux but it makes windows unhappy
// Hence the nice ifdef
//
// Code extract:
// union { int i; float f; } __tmp;
GSVector.h:2977:40: error: declaration of 'int GSVector4::extract32() const::<anonymous union>::i'
return _mm_extract_ps(m, i);
GSVector.h:2973:15: error: shadows template parm 'int i'
template<int i> __forceinline int extract32() const
#endif
template <int index>
__forceinline int extract32() const
{
return _mm_extract_ps(m, index);
}
#else
template <int i>
__forceinline int extract32() const
{
return _mm_extract_ps(m, i);
}
#endif
__forceinline static GSVector4 zero()
{