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Previously we were using a `Box<dyn FnOnce>` to support patching the code when jumping to labels. We needed to do this because some of the closures that were being used to patch needed to capture local variables (on both X86 and ARM it was the type of condition for the conditional jumps). To get around that, we can instead use const generics since the condition codes are always known at compile-time. This means that the closures go from polymorphic to monomorphic, which means they can be represented as an `fn` instead of a `Box<dyn FnOnce>`, which means they can fall back to a plain function pointer. This simplifies the storage of the `LabelRef` structs and should hopefully be a better default going forward. |
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| yjit.mk | ||