rustc_mir_dataflow cleanups, including some renamings
#133938
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This will have some conflicts with #133328, but I can resolve them if/when necessary. |
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Some changes occurred to the CTFE machinery cc @rust-lang/wg-const-eval Some changes occurred to MIR optimizations cc @rust-lang/wg-mir-opt |
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☔ The latest upstream changes (presumably #133891) made this pull request unmergeable. Please resolve the merge conflicts. |
They are only present because it's currently defined in terms of the domains of `Borrows` and `MaybeUninitializedPlaces` and `EverInitializedPlaces` via associated types. This commit introduces typedefs for those domains, avoiding the lifetimes.
Via the `Analysis::Domain` associated types, instead of the direct type name.
Currently they are called (most common) `state`, or `trans`, or (rare) `on_entry`. I think `trans` is short for "transfer function", which perhaps made more sense when `GenKillAnalysis` existed. Using `state` everywhere now is more consistent.
"Set" doesn't make much sense here, we refer to domain values as "state" everywhere else. (This name confused me for a while.)
It uses `MaybeInitializedPlaces` and `MaybeUninitializedPlaces`, but calls the results `live` and `dead`. This is very confusing given that there are also analyses called `MaybeLiveLocals` and `MaybeStorageLive` and `MaybeStorageDead`. This commit changes it to use `maybe_init` and `maybe_uninit`.
The words "before" and "after" have an obvious temporal meaning, e.g.
`seek_before_primary_effect`,
`visit_statement_{before,after}_primary_effect`. But "before" is also
used to name the effect that occurs before the primary effect of a
statement/terminator; this is `Effect::Before`. This leads to the
confusing possibility of talking about things happening "before/after
the before event".
This commit removes this awkward overloading of "before" by renaming
`Effect::Before` as `Effect::Early`. It also renames some of the
`Analysis` and `ResultsVisitor` methods to be more consistent.
Here are the before and after names:
- `Effect::{Before,Primary}` -> `Effect::{Early,Primary}`
- `apply_before_statement_effect` -> `apply_early_statement_effect`
- `apply_statement_effect` -> `apply_primary_statement_effect`
- `visit_statement_before_primary_effect` -> `visit_after_early_statement_effect`
- `visit_statement_after_primary_effect` -> `visit_after_primary_statement_effect`
(And s/statement/terminator/ for all the terminator events.)
In most places, the `early` method is listed before the corresponding `primary` method, like you'd expect. This commit fixes two places where that isn't the case.
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I rebased. |
oli-obk
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Dec 13, 2024
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r? @oli-obk |
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…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#133900 (Advent of `tests/ui` (misc cleanups and improvements) [1/N]) - rust-lang#133937 (Keep track of parse errors in `mod`s and don't emit resolve errors for paths involving them) - rust-lang#133938 (`rustc_mir_dataflow` cleanups, including some renamings) - rust-lang#134058 (interpret: reduce usage of TypingEnv::fully_monomorphized) - rust-lang#134130 (Stop using driver queries in the public API) - rust-lang#134140 (Add AST support for unsafe binders) - rust-lang#134229 (Fix typos in docs on provenance) r? `@ghost` `@rustbot` modify labels: rollup
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…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#133900 (Advent of `tests/ui` (misc cleanups and improvements) [1/N]) - rust-lang#133937 (Keep track of parse errors in `mod`s and don't emit resolve errors for paths involving them) - rust-lang#133938 (`rustc_mir_dataflow` cleanups, including some renamings) - rust-lang#134058 (interpret: reduce usage of TypingEnv::fully_monomorphized) - rust-lang#134130 (Stop using driver queries in the public API) - rust-lang#134140 (Add AST support for unsafe binders) - rust-lang#134229 (Fix typos in docs on provenance) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#133938 - nnethercote:rustc_mir_dataflow-renamings, r=oli-obk `rustc_mir_dataflow` cleanups, including some renamings Some opinionated commits in this collection, let's see how we go. r? `@cjgillot`
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…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#133900 (Advent of `tests/ui` (misc cleanups and improvements) [1/N]) - rust-lang#133937 (Keep track of parse errors in `mod`s and don't emit resolve errors for paths involving them) - rust-lang#133938 (`rustc_mir_dataflow` cleanups, including some renamings) - rust-lang#134058 (interpret: reduce usage of TypingEnv::fully_monomorphized) - rust-lang#134130 (Stop using driver queries in the public API) - rust-lang#134140 (Add AST support for unsafe binders) - rust-lang#134229 (Fix typos in docs on provenance) r? `@ghost` `@rustbot` modify labels: rollup
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Some opinionated commits in this collection, let's see how we go.
r? @cjgillot