public static void Rev64(ILEmitterCtx context)
{
OpCodeAlu64 op = (OpCodeAlu64)context.CurrOp;
context.EmitLdintzr(op.Rn);
SoftFallback.EmitCall(context, nameof(SoftFallback.ReverseBytes64));
context.EmitStintzr(op.Rd);
}
public static void Cls(ILEmitterCtx context)
{
OpCodeAlu64 op = (OpCodeAlu64)context.CurrOp;
context.EmitLdintzr(op.Rn);
context.EmitLdc_I4(op.RegisterSize == RegisterSize.Int32 ? 32 : 64);
SoftFallback.EmitCall(context, nameof(SoftFallback.CountLeadingSigns));
context.EmitStintzr(op.Rd);
}
private static void EmitFallback32_64(ILEmitterCtx context, string name32, string name64)
{
OpCodeAlu64 op = (OpCodeAlu64)context.CurrOp;
context.EmitLdintzr(op.Rn);
if (op.RegisterSize == RegisterSize.Int32)
{
SoftFallback.EmitCall(context, name32);
}
else
{
SoftFallback.EmitCall(context, name64);
}
context.EmitStintzr(op.Rd);
}
public static void Clz(ILEmitterCtx context)
{
OpCodeAlu64 op = (OpCodeAlu64)context.CurrOp;
context.EmitLdintzr(op.Rn);
if (Lzcnt.IsSupported)
{
Type tValue = op.RegisterSize == RegisterSize.Int32 ? typeof(uint) : typeof(ulong);
context.EmitCall(typeof(Lzcnt).GetMethod(nameof(Lzcnt.LeadingZeroCount), new Type[] { tValue }));
}
else
{
context.EmitLdc_I4(op.RegisterSize == RegisterSize.Int32 ? 32 : 64);
SoftFallback.EmitCall(context, nameof(SoftFallback.CountLeadingZeros));
}
context.EmitStintzr(op.Rd);
}
