Commit graph

8 commits

Author SHA1 Message Date
Griffin Smith
8e13b1303a feat(achilles): Implement a Unit type
Add support for a zero-sized Unit type. This requires some special at
the codegen level because LLVM (unsurprisingly) only allows Void types
in function return position - to make that a little easier to handle
there's a new pass that strips any unit-only expressions and pulls
unit-only function arguments up to new `let` bindings, so we never have
to actually pass around unit values.

Change-Id: I0fc18a516821f2d69172c42a6a5d246b23471e38
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2695
Reviewed-by: glittershark <grfn@gws.fyi>
Tested-by: BuildkiteCI
2021-03-28 17:33:00 +00:00
Griffin Smith
8d5f3029e5 feat(gs/achilles): Implement very basic monomorphization
Implement very basic monomorphization, by recording type variable
instantiations when typechecking Call nodes and then using those in a
new hir Visitor trait to copy the body of any generic decls for each
possible set of instantiation of the type variables.

Change-Id: Iab54030973e5d66e2b8bcd074b4cb6c001a90123
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2617
Reviewed-by: glittershark <grfn@gws.fyi>
Tested-by: BuildkiteCI
2021-03-20 22:20:26 +00:00
Griffin Smith
e7033bd8b0 fix(gs/achilles): Get rid of universalization step
The step of "universalizing" function expressions was conflicting with
top-level ascriptions for polymorphic function declarations:
universalization generates universal type variables, and top-level
polymorphic ascription *also* generates universal type variables, and
the two were conflicting with each other when unifying. Let's just get
rid of this now, and we can bring it back in a more principled manner
once we do actual let-generalization (which there's still an ignored
test case for)

Change-Id: Idc08c8cb5ac92d1e6e1e63c9b8729176cab73f44
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2616
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>
2021-03-20 20:20:20 +00:00
Griffin Smith
e2a3aea451 feat(gs/achilles): Prefix top-level ascriptions with ty
This makes parsing less ambiguous, which is nice (we can continue to not
actually care about indentation!) and aligns nicely with `fn` for the
declaration itself.

Change-Id: Id48f064e2a1e01c5105297be355d0991b312b76d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2615
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>
2021-03-20 20:20:20 +00:00
Griffin Smith
2c838ab845 feat(gs/achilles): Implement extern decls, for glibc functions
Implement extern decls, which codegen to LLVM as forward-declared
functions, and use these as a hook into calling glibc functions.

We can print to the terminal now! The integration tests can test this
now.

Change-Id: I70af4546b417b888ad9fbb18798db240f77f4e71
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2614
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>
2021-03-20 20:20:20 +00:00
Griffin Smith
fec6595d21 feat(gs/achilles): Codegen string literals
Codegen string literals to LLVM as (for now) global C string pointers

Change-Id: I6dcd7fa25a7806a2f708a8e9275c9a01174fd0cf
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2613
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>
2021-03-20 20:20:20 +00:00
Griffin Smith
b1c4b84dba chore(gs/achilles): Integrate with the depot build
Get achilles building in Nix as part of the depot's build tree. This
involved making it work with stable rust, since the depot only exposes
stable rust to sub-packages, which turned out to be fairly
straightforward.

Also adds libffi as a new top-level expose, since it's required to build achilles

Change-Id: I5f6dedb26c0b81ec258aedde1973e74903c07ece
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2612
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2021-03-20 20:20:20 +00:00
Vincent Ambo
b6895a5b30 merge(glittershark/achilles): Subtree import at 'b93268085a'
Imported from https://github.com/glittershark/achilles/

git-subtree-dir: users/glittershark/achilles
git-subtree-mainline: 4d193f2395
git-subtree-split: b93268085a
Change-Id: I64a583b454bbe03e20358ad7808939a4cbc212ba
2021-03-15 22:48:27 +02:00