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feat(gs/achilles): Implement extern decls, for glibc functions

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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>
This commit is contained in:
Griffin Smith 2021-03-19 20:46:19 -04:00 • committed by glittershark
parent fec6595d21
commit 2c838ab845
9 changed files with 147 additions and 28 deletions
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users/glittershark/achilles/ach/externs.ach Normal file
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extern puts : fn cstring -> int
fn main =
let _ = puts "foobar"
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