deduplicate infer var instantiation #121211
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we already use `instantiate_const_var`. This does lose some debugging info for nll because we stop populating the `reg_var_to_origin` table with `RegionCtxt::Existential(None)`, I don't think that matters however. Supporting this adds additional complexity to one of the most involved parts of the type system, so I really don't think it's worth it.
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deduplicate infer var instantiation Having 3 separate implementations of one of the most subtle parts of our type system is not a good strategy if we want to maintain a sound type system ✨ while working on this I already found some subtle bugs in the existing code, so that's awesome 🎉 This was necessary as I am not confident in my nll changes in rust-lang#119106, so I am first cleaning this up in a separate PR. r? `@BoxyUwU`
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Finished benchmarking commit (0395fa3): comparison URL. Overall result: no relevant changes - no action needed@rustbot label: -perf-regression Instruction countThis benchmark run did not return any relevant results for this metric. Max RSS (memory usage)ResultsThis is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.
CyclesThis benchmark run did not return any relevant results for this metric. Binary sizeThis benchmark run did not return any relevant results for this metric. Bootstrap: 639.676s -> 639.836s (0.03%) |
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Having 3 separate implementations of one of the most subtle parts of our type system is not a good strategy if we want to maintain a sound type system ✨ while working on this I already found some subtle bugs in the existing code, so that's awesome 🎉 cc #121159
This was necessary as I am not confident in my nll changes in #119106, so I am first cleaning this up in a separate PR.
r? @BoxyUwU