Proposal for SentinelInputRange

[Ary Borenszweig]

On 2/28/13 1:57 AM, Walter Bright wrote:
> On 2/27/2013 8:01 PM, John Colvin wrote:
>> Why must sentinel be known at compile time? I don't see what's in the
>> way of it
>> being a runtime argument.
>
> Performance!
>
> It should be usable as a case in a switch statement.

Isn't it possible for the optimizer to inline the function call and then 
combine the next ifs?

if (isSentinel(value)) {
} else {
   switch(value) {
   case ...
   }
}