Improve MIR modification #137203
Merged
Improve MIR modification #137203
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Instead of `expand_statements`. This makes the code shorter and consistent with other MIR transform passes. The tests require updating because there is a slight change in MIR output: - the old code replaced the original statement with twelve new statements. - the new code inserts converts the original statement to a `nop` and then insert twelve new statements in front of it. I.e. we now end up with an extra `nop`, which doesn't matter at all.
It's currently lacking comments. This commit adds some, which is useful because there are some methods with non-obvious behaviour. The commit also renames two things: - `patch_map` becomes `term_patch_map`, because it's only about terminators. - `is_patched` becomes `is_term_patched`, for the same reason. (I would guess that originally `MirPatch` only handled terminators, and then over time it expanded to allow other modifications, but these names weren't updated.)
The previous commit removed its single use. `MirPatch` is a more flexible alternative.
It has a single call site, and the code is clearer this way.
It has a single call site, and doesn't seem worth having as an API function.
rustbot
added
S-waiting-on-review
|
Some changes occurred to MIR optimizations cc @rust-lang/wg-mir-opt |
compiler-errors
approved these changes
Feb 18, 2025
|
r? compiler-errors @bors r+ rollup |
bors
added
S-waiting-on-bors
bors
added a commit
to rust-lang-ci/rust
that referenced
this pull request
Feb 18, 2025
…iaskrgr Rollup of 10 pull requests Successful merges: - rust-lang#135711 (Do not ICE on default_field_value const with lifetimes) - rust-lang#136599 (librustdoc: more usages of `Joined::joined`) - rust-lang#136876 (Locking documentation updates) - rust-lang#137000 (Deeply normalize item bounds in new solver) - rust-lang#137126 (fix docs for inherent str constructors) - rust-lang#137161 (Pattern Migration 2024: fix incorrect messages/suggestions when errors arise in macro expansions) - rust-lang#137191 (Update mdbook and move error_index_generator) - rust-lang#137203 (Improve MIR modification) - rust-lang#137206 (Make E0599 a structured error) - rust-lang#137218 (misc `layout_of` cleanup) r? `@ghost` `@rustbot` modify labels: rollup
rust-timer
added a commit
to rust-lang-ci/rust
that referenced
this pull request
Feb 19, 2025
Rollup merge of rust-lang#137203 - nnethercote:improve-MIR-modification, r=compiler-errors Improve MIR modification A few commits that simplify code that manipulates MIR bodies. r? `@tmiasko`
github-actions bot
pushed a commit
to tautschnig/verify-rust-std
that referenced
this pull request
Mar 11, 2025
…iaskrgr Rollup of 10 pull requests Successful merges: - rust-lang#135711 (Do not ICE on default_field_value const with lifetimes) - rust-lang#136599 (librustdoc: more usages of `Joined::joined`) - rust-lang#136876 (Locking documentation updates) - rust-lang#137000 (Deeply normalize item bounds in new solver) - rust-lang#137126 (fix docs for inherent str constructors) - rust-lang#137161 (Pattern Migration 2024: fix incorrect messages/suggestions when errors arise in macro expansions) - rust-lang#137191 (Update mdbook and move error_index_generator) - rust-lang#137203 (Improve MIR modification) - rust-lang#137206 (Make E0599 a structured error) - rust-lang#137218 (misc `layout_of` cleanup) r? `@ghost` `@rustbot` modify labels: rollup
github-actions bot
pushed a commit
to tautschnig/verify-rust-std
that referenced
this pull request
Mar 11, 2025
…iaskrgr Rollup of 10 pull requests Successful merges: - rust-lang#135711 (Do not ICE on default_field_value const with lifetimes) - rust-lang#136599 (librustdoc: more usages of `Joined::joined`) - rust-lang#136876 (Locking documentation updates) - rust-lang#137000 (Deeply normalize item bounds in new solver) - rust-lang#137126 (fix docs for inherent str constructors) - rust-lang#137161 (Pattern Migration 2024: fix incorrect messages/suggestions when errors arise in macro expansions) - rust-lang#137191 (Update mdbook and move error_index_generator) - rust-lang#137203 (Improve MIR modification) - rust-lang#137206 (Make E0599 a structured error) - rust-lang#137218 (misc `layout_of` cleanup) r? `@ghost` `@rustbot` modify labels: rollup
# for free
to join this conversation on GitHub.
Already have an account?
# to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
A few commits that simplify code that manipulates MIR bodies.
r? @tmiasko