Christophe de Dinechin

Generate lifetime values

5

Lifetime is a [new concept](http://c3d.github.io/xl/#lifetime) in XL, inspired by the Rust ["borrow checker"](https://doc.rust-lang.org/1.8.0/book/references-and-borrowing.html), and destined to make it possible in XL to implement a wider class of borrow-checks from the...

Remove remnants of bytecode interpreter (or, alternatively, fix it)

5

The bytecode interpreter (`-O1` option) is entirely broken. Choose one of the following options: 1. Get rid of it entirely (which is a problem because of [opcodes](https://github.com/c3d/xl/blob/master/include/opcodes.h), which contains al...

Implement nested scopes

1

The documentation now describes [scoping rules](https://c3d.github.io/xl/#nested-declarations) which are currently, for the most part, not implemented. The Tao3D compiler was notoriously bad at scoping, sometimes leaking definitions in the enclosing scope...

With LLVM 9.0.1, there is the following warning: ``` llvm-crap.cpp: In constructor ‘XL::JITPrivate::JITPrivate(int, char**)’: llvm-crap.cpp:560:20: warning: ‘llvm::orc::LegacyRTDyldObjectLinkingLayer::LegacyRTDyldObjectLinkingLayer(llvm::orc::ExecutionSession&, llvm::orc::LegacyRTDyldObjectLinkingLayer::ResourcesGetter, llvm::orc::LegacyRTDyldObjectLinkingLayer::NotifyLoadedFtor, llvm::orc::LegacyRTDyldObjectLinkingLayer::NotifyFinalizedFtor, llvm::orc::LegacyRTDyldObjectLinkingLayer::NotifyFreedFtor)’ is deprecated [-Wdeprecated-declarations] 560 | moduleHandle() | ^ In...

The XL documentation now gives a description of the [error type](https://c3d.github.io/xl/#errors) and [how they are processed](https://c3d.github.io/xl/#error-handling). Implementing this involves: * Defining the `error` type. * Recognizing the `error` type during...

XL modules have existed in two implementations so far: * The [XL2 implementation](https://github.com/c3d/xl/blob/master/xl2/native/xl.semantics.modules.xs) which is hierarchical, but has no dynamic loading, no version numbers nor much self-desccription / introspection. *...

There are a number of XL [native modules](https://github.com/c3d/xl/blob/master/include/basics.tbl) that currently use the [opcode.h](https://github.com/c3d/xl/blob/master/include/opcodes.h) interface. It would be useful to see what can be converted to XL_NATIVE (or at least have...

Some functions have been already removed from the runtime, but it would be interesting to revisit how many of them can be removed completely.

With the existence of XL_NATIVE (issue #29), it should now be possible to provide a strategy to transfer the 1500 or so native function interfaces in Tao3D.

There are only a handful of runtime functions tagged using XL_NATIVE at the moment. More functions should be tagged, which might expose the need to add a few more types...