Doug Gregor c09bbf4c10 [Performance diagnostics] Enable checking of throw instructions ...

When performance diagnostics were introduced, typed throws didn't exist
so it was not generally possible to have throws anywhere without
triggering performance diagnostics. As a short term hack, we disabled
checking of `throw` instructions and the basic blocks that terminate
in a `throw`.

Now that typed throws is available and can be used to eliminate
allocations with error handling, remove all of the hacks. We'll now
diagnose attempts to throw or catch existential values (e.g., the `any
Error` used for untyped throws), but typed throws are fine.

2024-11-21 16:06:44 -08:00

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