public Expression VisitRegisterStorage(RegisterStorage reg)
{
// If the architecture has no subregisters, this test will
// be true.
if (map.TryGetValue(reg, out CallBinding cb))
{
return(cb.Expression);
}
// If the architecture has subregisters, we need a more
// expensive test.
//$TODO: perhaps this can be done with another level of lookup,
// eg by using a Dictionary<StorageDomain<Dictionary<Storage, CallBinding>>
foreach (var de in map)
{
if (reg.OverlapsWith(de.Value.Storage))
{
return(de.Value.Expression);
}
}
if (bindUses)
{
return(EnsureRegister(reg));
}
return(null);
}
