internal void LazyEmit_idiv()
{
// we need to special case dividing by -1, because the CLR div instruction
// throws an OverflowException when dividing Int32.MinValue by -1, and
// Java just silently overflows
ConstIntExpr v = PeekStack() as ConstIntExpr;
if (v != null)
{
if (v.i == -1)
{
PopStack();
Emit(OpCodes.Neg);
}
else
{
Emit(OpCodes.Div);
}
}
else
{
Emit(OpCodes.Dup);
Emit(OpCodes.Ldc_I4_M1);
CodeEmitterLabel label = DefineLabel();
Emit(OpCodes.Bne_Un_S, label);
Emit(OpCodes.Pop);
Emit(OpCodes.Neg);
CodeEmitterLabel label2 = DefineLabel();
Emit(OpCodes.Br_S, label2);
MarkLabel(label);
Emit(OpCodes.Div);
MarkLabel(label2);
}
}
internal void LazyEmitAnd_I4(int v2)
{
ConstIntExpr v1 = PeekStack() as ConstIntExpr;
if (v1 != null)
{
PopStack();
LazyEmitLdc_I4(v1.i & v2);
}
else
{
LazyEmitLdc_I4(v2);
Emit(OpCodes.And);
}
}