improve comments for simplify_type
#94057
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☔ The latest upstream changes (presumably #94072) made this pull request unmergeable. Please resolve the merge conflicts. |
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lqd
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Feb 21, 2022
Co-authored-by: Rémy Rakic <[email protected]>
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improve comments for `simplify_type` Should now correctly describe what's going on. Experimented with checking the invariant for projections but that ended up requiring fairly involved changes. I assume that it is not possible to get unsoundness here, at least for now and I can pretty much guarantee that it's impossible to trigger it by accident. r? ````@nikomatsakis```` cc rust-lang#92721
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…askrgr Rollup of 8 pull requests Successful merges: - rust-lang#92697 (Use cgroup quotas for calculating `available_parallelism`) - rust-lang#94057 (improve comments for `simplify_type`) - rust-lang#94547 (`parse_tt` cleanups) - rust-lang#94550 (rustdoc: Add test for higher kinded functions generated by macros) - rust-lang#94551 (Doc: Fix use of quote instead of backstick in Adapter::map.) - rust-lang#94554 (Fix invalid lint_node_id being put on a removed stmt) - rust-lang#94555 (all: fix some typos) - rust-lang#94563 (Remove a unnecessary `..` pattern) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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`simplify_type` improvements and cursed docs the existing `TreatParams` enum pretty much mixes everything up. Not sure why this looked right to me in rust-lang#94057 This also includes two changes which impact perf: - `ty::Projection` with inference vars shouldn't be treated as a rigid type, even if fully normalized - `ty::Placeholder` only unifies with itself, so actually return `Some` for them r? `@nikomatsakis`
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Should now correctly describe what's going on. Experimented with checking the invariant for projections
but that ended up requiring fairly involved changes. I assume that it is not possible to get unsoundness here,
at least for now and I can pretty much guarantee that it's impossible to trigger it by accident.
r? @nikomatsakis cc #92721