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Try to use intrinsics for COP1 single-precision square root?

This commit is contained in:
unknown 2015-09-15 15:03:05 -04:00
parent 624b388a1a
commit b6eb1c3234
1 changed files with 8 additions and 4 deletions
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12
Source/Project64/N64 System/Interpreter/Interpreter Ops.cpp
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@ -2419,12 +2419,12 @@ void R4300iOp::COP1_S_DIV()
void R4300iOp::COP1_S_SQRT() void R4300iOp::COP1_S_SQRT()
{ {
float * Dest = (float *)(_FPR_S[m_Opcode.fd]);
float * Source = (float *)(_FPR_S[m_Opcode.fs]);
TEST_COP1_USABLE_EXCEPTION TEST_COP1_USABLE_EXCEPTION
_controlfp(*_RoundingModel,_MCW_RC); _controlfp(*_RoundingModel,_MCW_RC);
#ifdef _M_IX86 #ifdef _M_IX86
float * Dest = (float *)_FPR_S[m_Opcode.fd];
float * Source = (float *)_FPR_S[m_Opcode.fs];
_asm _asm
{ {
push esi push esi
@ -2436,7 +2436,11 @@ void R4300iOp::COP1_S_SQRT()
pop esi pop esi
} }
#else #else
g_Notify->BreakPoint(__FILEW__,__LINE__); __m128 xmm;
xmm = _mm_load_ss(Source);
xmm = _mm_sqrt_ss(xmm);
*(Dest) = _mm_cvtss_f32(xmm);
#endif #endif
} }