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interp: Handle NAN more correctly in vscmp.

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2019-03-31 10:37:07 -07:00
parent db28c61272
commit 2a5d4e577d
1 changed files with 17 additions and 12 deletions
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Core/MIPS/MIPSIntVFPU.cpp
+17 -12
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@@ -1681,26 +1681,31 @@ namespace MIPSInt
EatPrefixes();
}
// This doesn't quite pass all the tests :/
void Int_Vscmp(MIPSOpcode op) {
FloatBits s, t, d;
int vt = _VT;
int vs = _VS;
int vd = _VD;
VectorSize sz = GetVecSize(op);
float s[4];
float t[4];
float d[4];
ReadVector(s, sz, vs);
ApplySwizzleS(s, sz);
ReadVector(t, sz, vt);
ApplySwizzleT(t, sz);
ReadVector(s.f, sz, vs);
ApplySwizzleS(s.f, sz);
ReadVector(t.f, sz, vt);
ApplySwizzleT(t.f, sz);
int n = GetNumVectorElements(sz);
for (int i = 0; i < n ; i++) {
float a = s[i] - t[i];
d[i] = (float) ((0.0 < a) - (a < 0.0));
float a = s.f[i] - t.f[i];
if (my_isnan(a)) {
// NAN/INF are treated as just larger numbers, as in vmin/vmax.
int sMagnitude = s.u[i] & 0x7FFFFFFF;
int tMagnitude = t.u[i] & 0x7FFFFFFF;
int b = (s.i[i] < 0 ? -sMagnitude : sMagnitude) - (t.i[i] < 0 ? -tMagnitude : tMagnitude);
d.f[i] = (float)((0 < b) - (b < 0));
} else {
d.f[i] = (float)((0.0f < a) - (a < 0.0f));
}
}
ApplyPrefixD(d, sz);
WriteVector(d, sz, vd);
ApplyPrefixD(d.f, sz);
WriteVector(d.f, sz, vd);
PC += 4;
EatPrefixes();
}