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Optimize shallow_resolve_changed #67079

Merged
merged 2 commits into from
Dec 12, 2019
Merged

Optimize shallow_resolve_changed #67079

merged 2 commits into from
Dec 12, 2019

Commits on Dec 10, 2019

  1. Optimize shallow_resolve_changed. 

    It can be made even more specialized.
    @nnethercote
    nnethercote committed Dec 10, 2019
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  2. Change PendingPredicateObligation::stalled_on's type. 

    From a `Vec<Ty>` to a `Vec<InferTy>`, because that's a more restrictive
type. This is a perf win because the ultra-hot function
`shallow_resolve_changed` has less pattern-matching to do.
    @nnethercote
    nnethercote committed Dec 10, 2019
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