How to combine @generated and @inline?

[Erik Schnetter]

I have a generated function that generates a very small function
(essentially a vector load instruction). Unfortunately, this function
is not inlined, and I thus want to mark the generated function as
@inline. How do I do so?

Writing either "@inline @generated" or "@generated @inline" both fail.

-erik

--
Erik Schnetter <schn...@gmail.com>
http://www.perimeterinstitute.ca/personal/eschnetter/

[Matt Bauman]

You need to manually attach the inline annotation within the function body that gets generated.  See, e.g., https://github.com/JuliaLang/julia/blob/275c7e8929dd391960ba88e741c6f537ccca6cc9/base/multidimensional.jl#L233-L236

[Stefan Karpinski]

This seems like a viable feature request if you want to open an issue – i.e. @inline @generated or @generated @inline should arrange that the resulting function body be annotated appropriately.

[Matt Bauman]

Yeah, I was thinking about that as I responded.  An easier intermediate solution (which could be implemented purely in the Julia macro) would be to support `@inline quote … end`.  Either way, the semantics are a little strange — you're not inlining the quote block, nor are you inlining the function generator itself.

[Jeffrey Sarnoff]

I'd prefer @inline @generated

because @generated @inline seems to say "generate this function inline" (not "inline the function generated")

[Erik Schnetter]

Thanks for the pointer! `meta(:inline)` is easy enough to generate.

-erik