public static Operand GetHalfPacked(EmitterContext context, OFmt swizzle, Operand[] results, int rd)
{
switch (swizzle)
{
case OFmt.F16: return context.PackHalf2x16(results[0], results[1]);
case OFmt.F32: return results[0];
case OFmt.MrgH0:
{
Operand h1 = GetHalfDest(context, rd, isHigh: true);
return context.PackHalf2x16(results[0], h1);
}
case OFmt.MrgH1:
{
Operand h0 = GetHalfDest(context, rd, isHigh: false);
return context.PackHalf2x16(h0, results[1]);
}
}
throw new ArgumentException($"Invalid swizzle \"{swizzle}\".");
}
private static void EmitHadd2Hmul2(
EmitterContext context,
OFmt swizzle,
Operand[] srcA,
Operand[] srcB,
bool isAdd,
int rd,
bool saturate)
{
Operand[] res = new Operand[2];
for (int index = 0; index < res.Length; index++)
{
if (isAdd)
{
res[index] = context.FPAdd(srcA[index], srcB[index]);
}
else
{
res[index] = context.FPMultiply(srcA[index], srcB[index]);
}
res[index] = context.FPSaturate(res[index], saturate);
}
context.Copy(GetDest(rd), GetHalfPacked(context, swizzle, res, rd));
}
public static void EmitHfma2(
EmitterContext context,
OFmt swizzle,
Operand[] srcA,
Operand[] srcB,
Operand[] srcC,
int rd,
bool saturate)
{
Operand[] res = new Operand[2];
for (int index = 0; index < res.Length; index++)
{
res[index] = context.FPFusedMultiplyAdd(srcA[index], srcB[index], srcC[index]);
res[index] = context.FPSaturate(res[index], saturate);
}
context.Copy(GetDest(rd), GetHalfPacked(context, swizzle, res, rd));
}