Rollup of 7 pull requests #129060
Merged
Rollup of 7 pull requests #129060
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
The branch at the end of the `pow` implementations is redundant with multiplication code already present in the loop. By rotating the exit check, this branch can be largely removed, improving code size and instruction cache coherence.
The newly optimized loop has introduced a regression in the case when pow is called with a small constant exponent. LLVM is no longer able to unroll the loop and the generated code is larger and slower than what's expected in tests. Match and handle small exponent values separately by branching out to an explicit multiplication sequence for that exponent. Powers larger than 6 need more than three multiplications, so these cases are less likely to benefit from this optimization, also such constant exponents are less likely to be used in practice. For uses with a non-constant exponent, this might also provide a performance benefit if the exponent is small and does not vary between successive calls, so the same match arm tends to be taken as a predicted branch.
In the dynamic exponent case, it's preferred to not increase code size, so use solely the loop-based implementation there. This shows about 4% penalty in the variable exponent benchmarks on x86_64.
Give LLVM the for original, optimizable loop in pow and wrapped_pow functions in the case when the exponent is statically known.
Relevant for the deprecation of `CommandExt::before_exit` in rust-lang#125970.
…er error This doesn't work for translated compiler error messages.
This function is called for both compiler and non-compiler output, so if the line isn't recognized as JSON from the compiler then just print it as-is.
The JSON messages parsed by this file are from the _compiler_, not from libtest.
… is used with other output formats than HTML
…r=Amanieu Optimize integer `pow` by removing the exit branch The branch at the end of the `pow` implementations is redundant with multiplication code already present in the loop. By rotating the exit check, this branch can be largely removed, improving code size and reducing instruction cache misses. Testing on my machine (`x86_64`, 11th Gen Intel Core i5-1135G7 @ 2.40GHz), the `num::int_pow` benchmarks improve by some 40% for the unchecked operations and show some slight improvement for the checked operations as well.
…trochenkov Allow to customize `// TODO:` comment for deprecated safe autofix Relevant for the deprecation of `CommandExt::before_exit` in rust-lang#125970. Tracking: - rust-lang#124866
…joboet Add `#[must_use]` attribute to `Coroutine` trait [Coroutines tracking issue](rust-lang#43122) Like closures (`FnOnce`, `AsyncFn`, etc.), coroutines are lazy and do nothing unless called (resumed). Closure traits like `FnOnce` have `#[must_use = "closures are lazy and do nothing unless called"]` to catch likely bugs for users of APIs that produce them. This PR adds such a `#[must_use]` attribute to `trait Coroutine`.
compiletest: Don't panic on unknown JSON-like output lines
The `json::extract_rendered` function is called for both compiler output and non-compiler output, so it's inappropriate to panic just because a line starting with `{` didn't contain a compiler output message.
It is called from two places: when checking the output of a `ui` test process, and when printing the output of an arbitrary non-passing `ProcRes`. So unfortunately there's currently no easy way to know for sure whether it is seeing compiler output or not. Fortunately, neither call site appears to be relying on this panic; it's just an overzealous internal check.
Fixes rust-lang#126373.
…finition-warning, r=notriddle Emit a warning instead of an error if `--generate-link-to-definition` is used with other output formats than HTML Fixes rust-lang/docs.rs#2581. It's a bit weird to emit an error in this case anyway, a warning is more than enough. r? ``@notriddle``
…zkan Fix one usage of target triple in bootstrap This bug was introduced in rust-lang#128983. In this one case, the `TargetSelection` was also used as `Display` (not just as `Path`), which I did not notice in the original PR. If the target contained a custom file, it would be included in its `Display` formatting, even though only the triple should be used. Found [here](rust-lang#128983 (comment)). r? `@onur-ozkan`
…ackh726 Add mw back to review rotation
rustbot
added
A-meta
|
@bors r+ rollup=never p=7 |
bors
added
S-waiting-on-bors
bors
added a commit
to rust-lang-ci/rust
that referenced
this pull request
Aug 13, 2024
…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#122884 (Optimize integer `pow` by removing the exit branch) - rust-lang#127857 (Allow to customize `// TODO:` comment for deprecated safe autofix) - rust-lang#129034 (Add `#[must_use]` attribute to `Coroutine` trait) - rust-lang#129049 (compiletest: Don't panic on unknown JSON-like output lines) - rust-lang#129050 (Emit a warning instead of an error if `--generate-link-to-definition` is used with other output formats than HTML) - rust-lang#129056 (Fix one usage of target triple in bootstrap) - rust-lang#129058 (Add mw back to review rotation) r? `@ghost` `@rustbot` modify labels: rollup
|
The job Click to see the possible cause of the failure (guessed by this bot) |
|
💔 Test failed - checks-actions |
bors
added
S-waiting-on-review
|
@bors retry |
bors
added
S-waiting-on-bors
bors
added a commit
to rust-lang-ci/rust
that referenced
this pull request
Aug 14, 2024
…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#122884 (Optimize integer `pow` by removing the exit branch) - rust-lang#127857 (Allow to customize `// TODO:` comment for deprecated safe autofix) - rust-lang#129034 (Add `#[must_use]` attribute to `Coroutine` trait) - rust-lang#129049 (compiletest: Don't panic on unknown JSON-like output lines) - rust-lang#129050 (Emit a warning instead of an error if `--generate-link-to-definition` is used with other output formats than HTML) - rust-lang#129056 (Fix one usage of target triple in bootstrap) - rust-lang#129058 (Add mw back to review rotation) r? `@ghost` `@rustbot` modify labels: rollup
|
The job Click to see the possible cause of the failure (guessed by this bot) |
|
💔 Test failed - checks-actions |
bors
added
S-waiting-on-review
|
@bors retry |
bors
added
S-waiting-on-bors
|
☀️ Test successful - checks-actions |
|
📌 Perf builds for each rolled up PR:
previous master: 9859bf27fd In the case of a perf regression, run the following command for each PR you suspect might be the cause: |
|
Finished benchmarking commit (fbce03b): comparison URL. Overall result: ❌✅ regressions and 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)Results (primary 1.4%, secondary 2.2%)This 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.
CyclesThis benchmark run did not return any relevant results for this metric. Binary sizeResults (primary 0.1%)This 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.
Bootstrap: 750.582s -> 751.474s (0.12%) |
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:
powby removing the exit branch #122884 (Optimize integerpowby removing the exit branch)// TODO:comment for deprecated safe autofix #127857 (Allow to customize// TODO:comment for deprecated safe autofix)#[must_use]attribute toCoroutinetrait #129034 (Add#[must_use]attribute toCoroutinetrait)--generate-link-to-definitionis used with other output formats than HTML #129050 (Emit a warning instead of an error if--generate-link-to-definitionis used with other output formats than HTML)r? @ghost
@rustbot modify labels: rollup
Create a similar rollup