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Derivatives of function imported from module not working properly #173

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Description

When importing a function (with autodiff macro) from a module, the derivatives are missing. I created a minimal example here.

# identical function as below, but defined in lib.rs
[src/main.rs:34:5] enzyme_y1_lib = (
    4.497780053946161,
    0.0, # <---
)
# identical function as above, but defined in main.rs
[src/main.rs:35:5] enzyme_y1f = (
    4.497780053946161,
    4.05342789389862,
)

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rustc --version --verbose:

rustc 1.82.0-nightly (86dedf7dc 2024-08-16)
binary: rustc
commit-hash: 86dedf7dc5b63661998a038c726033ad92c2d40e
commit-date: 2024-08-16
host: x86_64-unknown-linux-gnu
release: 1.82.0-nightly
LLVM version: 19.1.0
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