Add __crystal_raise_cast_failed for non-interpreted code
#15708
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straight-shoota
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Apr 25, 2025
ysbaddaden
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Apr 25, 2025
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I'm wondering if we could go one step further and move the expansion to the semantics pass, where it would belong better? Codegen would then merely generate, or interpret, whatever it's told to, and the LLVM codegen wouldn't need to map type ids to class names. |
straight-shoota
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…15712) Co-authored-by: Quinton Miller <[email protected]> Co-authored-by: Johannes Müller <[email protected]>
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Resolves #15705.
This completely circumvents the slow
MainVisitorinvocation per compiler-generatedraise(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 aMainVisitor(the only remaining place is#cant_pass_closure_to_c_exception_call).There is now an internal
~type_id_to_class_namefunction that returns the type name corresponding to a given instance type ID. It works even whenClass#nameis not implemented in the standard library. This might be useful for other purposes such as debugger tooling.