...that this would provide is worth the cost, though I'm sure that others would...

...just work", but it comes at a cost that tends to be invisible most of...

...outside world.  I figured MS subsidized the cost to get more developers working on Windows.

...the Bay Area or Washington, and they cost us 500k USD a year, deal with...

...analysis

To construct an SSA IR will cost a lot of time, that quite frankly...

...a bit of it.

This is the cost of "optimizing" ranges just in case someone...

...offering the framework needed for type state analysis at very little additional cost to it.

...using a struct, support an optional low-cost backtrack method by only using compiler information...

...all three will be at the same cost.

Mostly dependent upon the set operations.

So...

...VERY important for error handling. See zero-cost exceptions proposal for C++ to see why...