diff options
| author | Griffin Smith <grfn@gws.fyi> | 2021-03-28T17·28-0400 |
|---|---|---|
| committer | glittershark <grfn@gws.fyi> | 2021-03-28T17·33+0000 |
| commit | 8e13b1303a0d152c2f3b68f2421163e94fdf226c (patch) | |
| tree | 0cac0fee2cd52f912bb118cff78fdca9d28ac895 /users/glittershark/achilles/ach | |
| parent | db62866d820cf524b67cebe34033d3928804cf3c (diff) | |
feat(achilles): Implement a Unit type r/2356
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
Diffstat (limited to 'users/glittershark/achilles/ach')
| -rw-r--r-- | users/glittershark/achilles/ach/.gitignore | 1 | ||||
| -rw-r--r-- | users/glittershark/achilles/ach/units.ach | 7 |
2 files changed, 8 insertions, 0 deletions
diff --git a/users/glittershark/achilles/ach/.gitignore b/users/glittershark/achilles/ach/.gitignore index 07b37e168979..ac5296ebbd74 100644 --- a/users/glittershark/achilles/ach/.gitignore +++ b/users/glittershark/achilles/ach/.gitignore @@ -4,3 +4,4 @@ functions simple externs +units diff --git a/users/glittershark/achilles/ach/units.ach b/users/glittershark/achilles/ach/units.ach new file mode 100644 index 000000000000..70635d978c7c --- /dev/null +++ b/users/glittershark/achilles/ach/units.ach @@ -0,0 +1,7 @@ +extern puts : fn cstring -> int + +ty print : fn cstring -> () +fn print x = let _ = puts x in () + +ty main : fn -> int +fn main = let _ = print "hi" in 0 |