Julia 1.7 and below do not have constant-type globals. Julia 1.8 implemented typed globals

ChrisRackauckas · August 15, 2017, 6:27pm

Yes. And that seems to be the solution that’s settled on:

globals – make their performance less awful

opened 03:51PM - 01 Nov 14 UTC

performance

This keeps coming up, and rather than direct people to the performance tips, I f…eel like we should really just try to fix the issue. One relatively non-disruptive approach might be to emit code that accesses globals with a fast path that assumes that they have the same type that they currently have and a slow path that handles arbitrary type. A harder fix would be the compile-time version of that: generate code that assumes that globals retain their current type and invalidate it if the type changes. One might want to let compilation happen a couple of times before giving up and generating pessimistic general code. Related: #265, #524, #964

Issue:

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Julia 1.7 and below do not have constant-type globals. Julia 1.8 implemented typed globals

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