[Backport release/1.16] Add __crystal_raise_cast_failed for non-interpreted code#15712
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straight-shoota merged 2 commits intorelease/1.16from Apr 28, 2025
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This completely circumvents the slow `MainVisitor` invocation per compiler-generated `raise(TypeCastError.new(...))` call by reimplementing the raise using a top-level fun plus LLVM instructions. It also partially addresses the issue where the codegen phase could theoretically instantiate new types due to the use of a `MainVisitor` (the only remaining place is `#cant_pass_closure_to_c_exception_call`). There is now an internal `~type_id_to_class_name` function that returns the type name corresponding to a given instance type ID. It works even when `Class#name` is not implemented in the standard library. This might be useful for other purposes, such as debugger tooling. (cherry picked from commit e3c1224)
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CI is failing all over the place 🙈
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ysbaddaden
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Apr 28, 2025
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Automated backport of #15708 to
release/1.16, triggered by a label.