Rollup of 8 pull requests #107811
Merged
Rollup of 8 pull requests #107811
Conversation
This file contains 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
Previously, a Drop terminator was considered a move in MIR.
This commit changes the behavior to only treat Drop as a mutable
access to the dropped place.
In order for this change to be correct, we need to guarantee that
a) A dropped value won't be used again
b) Places that appear in a drop won't be used again before a
subsequent initialization.
We can ensure this to be correct at MIR construction because Drop
will only be emitted when a variable goes out of scope,
thus having:
(a) as there is no way of reaching the old value. drop-elaboration
will also remove any uninitialized drop.
(b) as the place can't be named following the end of the scope.
However, the initialization status, previously tracked by moves,
should also be tied to the execution of a Drop, hence the
additional logic in the dataflow analyses.
This is a prerequisite for cursor support for `BTreeMap`.
Implement cursors for BTreeMap See the ACP for an overview of the API: rust-lang/libs-team#141 The implementation is split into 2 commits: - The first changes the internal insertion functions to return a handle to the newly inserted element. The lifetimes involved are a bit hairy since we need a mutable handle to both the `BTreeMap` itself (which holds the root) and the nodes allocated in memory. I have tested that this passes the standard library testsuite under miri. - The second commit implements the cursor API itself. This is more straightforward to follow but still involves some unsafe code to deal with simultaneous mutable borrows of the tree root and the node that is currently being iterated.
Treat Drop as a rmw operation
Previously, a Drop terminator was considered a move in MIR. This commit changes the behavior to only treat Drop as a mutable access to the dropped place.
In order for this change to be correct, we need to guarantee that
1. A dropped value won't be used again
2. Places that appear in a drop won't be used again before a
subsequent initialization.
We can ensure this to be correct at MIR construction because Drop will only be emitted when a variable goes out of scope, thus having:
* (1) as there is no way of reaching the old value. drop-elaboration
will also remove any uninitialized drop.
* (2) as the place can't be named following the end of the scope.
However, the initialization status, previously tracked by moves, should also be tied to the execution of a Drop, hence the additional logic in the dataflow analyses.
From discussion in [this thread](https://rust-lang.zulipchat.com/#narrow/stream/233931-t-compiler.2Fmajor-changes/topic/.60DROP.60.20to.20.60DROP_IF.60.20compiler-team.23558), originating from rust-lang/compiler-team#558.
See also rust-lang#104488 (comment)
…=Mark-Simulacrum Update strip-ansi-escapes and vte This updates strip-ansi-escapes from 0.1.0 to 0.1.1 (and consequently vte). Changes: luser/strip-ansi-escapes@0.1.0...0.1.1 The only change really is updating vte which fixes some parsing issues (and drops the vendored source size by several megabytes). Closes rust-lang#107708
Change `arena_cache` to not alter the declared query result This makes the return types a bit clearer, limiting `arena_cache`'s effect to just the computation side. It also makes it easier to potentially remove `arena_cache`. r? ```@cjgillot```
…lly-derive-const, r=fee1-dead Make `derive_const` derive properly const-if-const impls Fixes rust-lang#107774 Fixes rust-lang#107666 Also fixes rendering of const-if-const bounds in pretty printing. r? ```@oli-obk``` or ```@fee1-dead```
…, r=lcnr Rename `replace_bound_vars_with_*` to `instantiate_binder_with_*` Mentioning "binder" rather than "bound vars", imo, makes it clearer that we're doing something to the binder as a whole. Also, "instantiate" is the verb that I'm always reaching for when I'm looking for these functions, and the name that we use in the new solver anyways. r? types
…=Dylan-DPC Add missing tracking issue for `RawOsError` I forgot to add it in the original PR… See rust-lang#107792. ```@rustbot``` label +T-libs-api -T-libs
…o, r=notriddle Fix small debug typo r? ``@notriddle``
rustbot
added
A-rustdoc-json
|
@bors r+ rollup=never p=8 |
bors
added
S-waiting-on-bors
|
☀️ Test successful - checks-actions |
|
📌 Perf builds for each rolled up PR: previous master: 9433ba6394 In the case of a perf regression, run the following command for each PR you suspect might be the cause: |
This was referenced Feb 8, 2023
|
Finished benchmarking commit (ef934d9): comparison URL. Overall result: ✅ improvements - no action needed@rustbot label: -perf-regression Instruction countThis is a highly reliable metric that was used to determine the overall result at the top of this comment.
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.
CyclesResultsThis 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.
|
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in 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.
Successful merges:
arena_cacheto not alter the declared query result #107758 (Changearena_cacheto not alter the declared query result)derive_constderive properly const-if-const impls #107777 (Makederive_constderive properly const-if-const impls)replace_bound_vars_with_*toinstantiate_binder_with_*#107780 (Renamereplace_bound_vars_with_*toinstantiate_binder_with_*)RawOsError#107793 (Add missing tracking issue forRawOsError)Failed merges:
r? @ghost
@rustbot modify labels: rollup
Create a similar rollup