8e13b1303a
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
7 lines
150 B
Text
7 lines
150 B
Text
extern puts : fn cstring -> int
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ty print : fn cstring -> ()
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fn print x = let _ = puts x in ()
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ty main : fn -> int
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fn main = let _ = print "hi" in 0
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