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HIR: cache lowering info #28143

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nrc opened this issue Sep 1, 2015 · 2 comments
Closed

HIR: cache lowering info #28143

nrc opened this issue Sep 1, 2015 · 2 comments
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A-HIR Area: The high-level intermediate representation (HIR)

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@nrc
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nrc commented Sep 1, 2015

Lowering is O(n) in the number of nodes reached, so could take a while if it happens often (it doesn't at the moment, but could in the future). It might make sense to cache the lowering step, so we can cheaply go from AST to HIR. This is probably most important for tools, rather than the compiler itself.
@nrc nrc mentioned this issue Sep 1, 2015
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@steveklabnik steveklabnik added the A-HIR Area: The high-level intermediate representation (HIR) label Sep 3, 2015
@steveklabnik
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Triage: no idea.

@nikomatsakis
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I sort of think we should close this. It's kind of a complex question and I don't think having this bug is helpful really. Feel free to re-open.

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@steveklabnik @nikomatsakis @nrc