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x86 jit: SIMD-ify cross product

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This commit is contained in:
Henrik Rydgard 2014-11-27 00:18:19 +01:00
parent 5033babb10
commit acb711007f
1 changed files with 22 additions and 0 deletions
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22
Core/MIPS/x86/CompVFPU.cpp
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@ -741,6 +741,28 @@ void Jit::Comp_VCrossQuat(MIPSOpcode op) {
if (sz == V_Triple) {
// Cross product vcrsp.t
if (fpr.TryMapDirtyInInVS(dregs, sz, sregs, sz, tregs, sz)) {
/*
__m128 result = _mm_sub_ps(
_mm_mul_ps(b, _mm_shuffle_ps(a, a, _MM_SHUFFLE(3, 0, 2, 1))),
_mm_mul_ps(a, _mm_shuffle_ps(b, b, _MM_SHUFFLE(3, 0, 2, 1)))
);
return _mm_shuffle_ps(result, result, _MM_SHUFFLE(3, 0, 2, 1));
*/
MOVAPS(XMM0, fpr.VS(tregs[0]));
MOVAPS(XMM1, fpr.VS(sregs[0]));
SHUFPS(XMM0, R(XMM0), _MM_SHUFFLE(3, 0, 2, 1));
SHUFPS(XMM1, R(XMM1), _MM_SHUFFLE(3, 0, 2, 1));
MULPS(XMM0, fpr.VS(sregs[0]));
MULPS(XMM1, fpr.VS(tregs[0]));
SUBPS(XMM0, R(XMM1));
SHUFPS(XMM0, R(XMM0), _MM_SHUFFLE(3, 0, 2, 1));
MOVAPS(fpr.VS(dregs[0]), XMM0);
fpr.ReleaseSpillLocks();
NOTICE_LOG(JIT, "Crossprod %08x", js.blockStart);
return;
}
fpr.MapRegsV(sregs, sz, 0);
// Compute X