Miscellaneous inlining improvements #69256

nnethercote · 2020-02-18T07:38:11Z

These commits inline some hot functions that aren't currently inlined, for some speed wins.

r? @Centril

It only has two call sites, and the one within `from_utf8` is hot within rustc itself.

Mostly, these are the ones whose body just contains `f(self)`.

nnethercote · 2020-02-18T07:38:24Z

@bors try @rust-timer queue

rust-timer · 2020-02-18T07:38:25Z

Awaiting bors try build completion

bors · 2020-02-18T07:38:36Z

⌛ Trying commit e761f3a with merge 2a7a3a1...

@Centril

Miscellaneous inlining improvements These commits inline some hot functions that aren't currently inlined, for some speed wins. r? @Centril

bors · 2020-02-18T10:44:49Z

💔 Test failed - checks-azure

nnethercote · 2020-02-18T21:23:35Z

The try push failed due to a disk being full. Let's try again.

@bors try

bors · 2020-02-18T21:23:45Z

⌛ Trying commit e761f3a with merge 995d70a9f461625ffa1dd32e8a1973b9c3ed4872...

nnethercote · 2020-02-18T21:24:54Z

Local check results are good, mostly benefiting short-running benchmarks.

helloworld-check
        avg: -4.4%      min: -5.0%      max: -4.0%
deeply-nested-check
        avg: -2.8%      min: -4.3%      max: -1.9%
issue-46449-check
        avg: -3.4%      min: -4.2%      max: -2.8%
unify-linearly-check
        avg: -3.4%      min: -4.2%      max: -2.4%
trait-stress-check
        avg: -1.5%      min: -4.1%      max: -0.1%
await-call-tree-check
        avg: -3.0%      min: -4.0%      max: -2.2%
wf-projection-stress-65510-che...
        avg: -1.1%      min: -2.9%      max: -0.1%
regression-31157-check
        avg: -1.6%      min: -2.5%      max: -0.8%
tokio-webpush-simple-check
        avg: -1.3%      min: -1.8%      max: -0.8%
token-stream-stress-check
        avg: -1.3%      min: -1.3%      max: -1.2%
webrender-wrench-check
        avg: -0.9%      min: -1.2%      max: -0.5%
clap-rs-check
        avg: -0.6%      min: -1.2%      max: 0.2%
wg-grammar-check
        avg: -0.6%      min: -1.2%      max: -0.3%
ripgrep-check
        avg: -0.8%      min: -1.1%      max: -0.4%
inflate-check
        avg: -0.4%      min: -1.1%      max: -0.1%
futures-check
        avg: -0.7%      min: -1.0%      max: -0.3%
encoding-check
        avg: -0.7%      min: -0.9%      max: -0.4%
coercions-check
        avg: -0.6%?     min: -0.9%?     max: -0.3%?
tuple-stress-check
        avg: -0.2%      min: -0.8%      max: 0.0%
regex-check
        avg: -0.7%      min: -0.8%      max: -0.3%
syn-check
        avg: -0.5%      min: -0.7%      max: -0.3%
unicode_normalization-check
        avg: -0.3%      min: -0.7%      max: -0.1%
piston-image-check
        avg: -0.5%      min: -0.7%      max: -0.2%
hyper-2-check
        avg: -0.4%      min: -0.6%      max: -0.2%
keccak-check
        avg: -0.2%      min: -0.5%      max: -0.1%
webrender-check
        avg: -0.4%      min: -0.5%      max: -0.2%
html5ever-check
        avg: -0.3%      min: -0.5%      max: -0.1%
unused-warnings-check
        avg: -0.3%      min: -0.4%      max: -0.2%
deep-vector-check
        avg: -0.2%      min: -0.4%      max: -0.2%
serde-check
        avg: -0.2%      min: -0.3%      max: -0.1%
cranelift-codegen-check
        avg: -0.2%      min: -0.3%      max: -0.1%
ucd-check
        avg: -0.1%      min: -0.3%      max: 0.1%
cargo-check
        avg: -0.2%      min: -0.3%      max: -0.1%
script-servo-check
        avg: -0.2%      min: -0.3%      max: -0.1%
serde-serde_derive-check
        avg: -0.2%      min: -0.2%      max: -0.1%
style-servo-check
        avg: -0.2%      min: -0.2%      max: -0.1%
ctfe-stress-4-check
        avg: -0.1%?     min: -0.2%?     max: -0.1%?
packed-simd-check
        avg: -0.1%      min: -0.1%      max: -0.0%

Centril · 2020-02-18T21:32:59Z

r=me with positive perf.rl.o numbers, etc. etc.

bors · 2020-02-19T00:21:30Z

☀️ Try build successful - checks-azure
Build commit: 995d70a9f461625ffa1dd32e8a1973b9c3ed4872 (995d70a9f461625ffa1dd32e8a1973b9c3ed4872)

rust-timer · 2020-02-19T00:21:31Z

Queued 995d70a9f461625ffa1dd32e8a1973b9c3ed4872 with parent e620d0f, future comparison URL.

nnethercote · 2020-02-19T07:12:30Z

@bors rollup=never, because it affects performance.

rust-timer · 2020-02-19T13:25:08Z

Finished benchmarking try commit 995d70a9f461625ffa1dd32e8a1973b9c3ed4872, comparison URL.

bjorn3 · 2020-02-19T14:21:51Z

There are many improvements, but syn-opt regressed.

mati865 · 2020-02-19T19:51:21Z

@bjorn3 could be noise: #69060

nnethercote · 2020-02-19T21:20:48Z

Yes, syn is known to be noisy, that's why it has a ? next to the numbers in the table. (See the warning at the top of the page for more explanation.)

Furthermore, this change affects compiler front-end code so if there was a genuine regression for syn it should show up for syn-debug and syn-check benchmarks too.

@bors r=Centril

bors · 2020-02-19T21:20:49Z

📌 Commit e761f3a has been approved by Centril

Dylan-DPC-zz · 2020-02-20T00:32:50Z

@bors p=1

bors · 2020-02-20T02:00:37Z

⌛ Testing commit e761f3a with merge 183e893...

bors · 2020-02-20T05:18:12Z

☀️ Test successful - checks-azure
Approved by: Centril
Pushing 183e893 to master...

Pkgsrc changes: * Bump rust bootstrap version to 1.42.0, except for Darwin/i686 where the bootstrap is not (yet?) available. Upstream changes: Version 1.43.0 (2020-04-23) ========================== Language -------- - [Fixed using binary operations with `&{number}` (e.g. `&1.0`) not having the type inferred correctly.][68129] - [Attributes such as `#[cfg()]` can now be used on `if` expressions.][69201] **Syntax only changes** - [Allow `type Foo: Ord` syntactically.][69361] - [Fuse associated and extern items up to defaultness.][69194] - [Syntactically allow `self` in all `fn` contexts.][68764] - [Merge `fn` syntax + cleanup item parsing.][68728] - [`item` macro fragments can be interpolated into `trait`s, `impl`s, and `extern` blocks.][69366] For example, you may now write: ```rust macro_rules! mac_trait { ($i:item) => { trait T { $i } } } mac_trait! { fn foo() {} } ``` These are still rejected *semantically*, so you will likely receive an error but these changes can be seen and parsed by macros and conditional compilation. Compiler -------- - [You can now pass multiple lint flags to rustc to override the previous flags.][67885] For example; `rustc -D unused -A unused-variables` denies everything in the `unused` lint group except `unused-variables` which is explicitly allowed. However, passing `rustc -A unused-variables -D unused` denies everything in the `unused` lint group **including** `unused-variables` since the allow flag is specified before the deny flag (and therefore overridden). - [rustc will now prefer your system MinGW libraries over its bundled libraries if they are available on `windows-gnu`.][67429] - [rustc now buffers errors/warnings printed in JSON.][69227] Libraries --------- - [`Arc<[T; N]>`, `Box<[T; N]>`, and `Rc<[T; N]>`, now implement `TryFrom<Arc<[T]>>`,`TryFrom<Box<[T]>>`, and `TryFrom<Rc<[T]>>` respectively.][69538] **Note** These conversions are only available when `N` is `0..=32`. - [You can now use associated constants on floats and integers directly, rather than having to import the module.][68952] e.g. You can now write `u32::MAX` or `f32::NAN` with no imports. - [`u8::is_ascii` is now `const`.][68984] - [`String` now implements `AsMut<str>`.][68742] - [Added the `primitive` module to `std` and `core`.][67637] This module reexports Rust's primitive types. This is mainly useful in macros where you want avoid these types being shadowed. - [Relaxed some of the trait bounds on `HashMap` and `HashSet`.][67642] - [`string::FromUtf8Error` now implements `Clone + Eq`.][68738] Stabilized APIs --------------- - [`Once::is_completed`] - [`f32::LOG10_2`] - [`f32::LOG2_10`] - [`f64::LOG10_2`] - [`f64::LOG2_10`] - [`iter::once_with`] Cargo ----- - [You can now set config `[profile]`s in your `.cargo/config`, or through your environment.][cargo/7823] - [Cargo will now set `CARGO_BIN_EXE_<name>` pointing to a binary's executable path when running integration tests or benchmarks.][cargo/7697] `<name>` is the name of your binary as-is e.g. If you wanted the executable path for a binary named `my-program`you would use `env!("CARGO_BIN_EXE_my-program")`. Misc ---- - [Certain checks in the `const_err` lint were deemed unrelated to const evaluation][69185], and have been moved to the `unconditional_panic` and `arithmetic_overflow` lints. Compatibility Notes ------------------- - [Having trailing syntax in the `assert!` macro is now a hard error.][69548] This has been a warning since 1.36.0. - [Fixed `Self` not having the correctly inferred type.][69340] This incorrectly led to some instances being accepted, and now correctly emits a hard error. [69340]: rust-lang/rust#69340 Internal Only ------------- These changes provide no direct user facing benefits, but represent significant improvements to the internals and overall performance of `rustc` and related tools. - [All components are now built with `opt-level=3` instead of `2`.][67878] - [Improved how rustc generates drop code.][67332] - [Improved performance from `#[inline]`-ing certain hot functions.][69256] - [traits: preallocate 2 Vecs of known initial size][69022] - [Avoid exponential behaviour when relating types][68772] - [Skip `Drop` terminators for enum variants without drop glue][68943] - [Improve performance of coherence checks][68966] - [Deduplicate types in the generator witness][68672] - [Invert control in struct_lint_level.][68725] [67332]: rust-lang/rust#67332 [67429]: rust-lang/rust#67429 [67637]: rust-lang/rust#67637 [67642]: rust-lang/rust#67642 [67878]: rust-lang/rust#67878 [67885]: rust-lang/rust#67885 [68129]: rust-lang/rust#68129 [68672]: rust-lang/rust#68672 [68725]: rust-lang/rust#68725 [68728]: rust-lang/rust#68728 [68738]: rust-lang/rust#68738 [68742]: rust-lang/rust#68742 [68764]: rust-lang/rust#68764 [68772]: rust-lang/rust#68772 [68943]: rust-lang/rust#68943 [68952]: rust-lang/rust#68952 [68966]: rust-lang/rust#68966 [68984]: rust-lang/rust#68984 [69022]: rust-lang/rust#69022 [69185]: rust-lang/rust#69185 [69194]: rust-lang/rust#69194 [69201]: rust-lang/rust#69201 [69227]: rust-lang/rust#69227 [69548]: rust-lang/rust#69548 [69256]: rust-lang/rust#69256 [69361]: rust-lang/rust#69361 [69366]: rust-lang/rust#69366 [69538]: rust-lang/rust#69538 [cargo/7823]: rust-lang/cargo#7823 [cargo/7697]: rust-lang/cargo#7697 [`Once::is_completed`]: https://doc.rust-lang.org/std/sync/struct.Once.html#method.is_completed [`f32::LOG10_2`]: https://doc.rust-lang.org/std/f32/consts/constant.LOG10_2.html [`f32::LOG2_10`]: https://doc.rust-lang.org/std/f32/consts/constant.LOG2_10.html [`f64::LOG10_2`]: https://doc.rust-lang.org/std/f64/consts/constant.LOG10_2.html [`f64::LOG2_10`]: https://doc.rust-lang.org/std/f64/consts/constant.LOG2_10.html [`iter::once_with`]: https://doc.rust-lang.org/std/iter/fn.once_with.html

nnethercote added 3 commits February 18, 2020 15:42

Always inline run_utf8_validation.

ab90617

It only has two call sites, and the one within `from_utf8` is hot within rustc itself.

Inline Symbol::decode and Interner::intern.

c02d689

Inline various simple emit_* and read_* methods in Decoder.

e761f3a

Mostly, these are the ones whose body just contains `f(self)`.

rust-highfive assigned Centril Feb 18, 2020

rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Feb 18, 2020

bors added a commit that referenced this pull request Feb 18, 2020

Auto merge of #69256 - nnethercote:misc-inlining, r=<try>

2a7a3a1

Miscellaneous inlining improvements These commits inline some hot functions that aren't currently inlined, for some speed wins. r? @Centril

bors added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Feb 18, 2020

bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Feb 19, 2020

bors added the merged-by-bors This PR was explicitly merged by bors. label Feb 20, 2020

bors merged commit 183e893 into rust-lang:master Feb 20, 2020

nnethercote deleted the misc-inlining branch February 20, 2020 05:39

ArtemGr mentioned this pull request Feb 29, 2020

Reuse AsRef and AsMut as possible to reduce unsafe fitzgen/inlinable_string#25

Open

jonas-schievink added relnotes Marks issues that should be documented in the release notes of the next release. relnotes-perf Performance improvements that should be mentioned in the release notes. labels Mar 13, 2020

jonas-schievink modified the milestones: 1.44, 1.43 Mar 13, 2020

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Miscellaneous inlining improvements #69256

Miscellaneous inlining improvements #69256

nnethercote commented Feb 18, 2020

nnethercote commented Feb 18, 2020

rust-timer commented Feb 18, 2020

bors commented Feb 18, 2020

bors commented Feb 18, 2020

nnethercote commented Feb 18, 2020

bors commented Feb 18, 2020

nnethercote commented Feb 18, 2020

Centril commented Feb 18, 2020 •

edited

Loading

bors commented Feb 19, 2020

rust-timer commented Feb 19, 2020

nnethercote commented Feb 19, 2020 •

edited

Loading

rust-timer commented Feb 19, 2020

bjorn3 commented Feb 19, 2020

mati865 commented Feb 19, 2020

nnethercote commented Feb 19, 2020

bors commented Feb 19, 2020

Dylan-DPC-zz commented Feb 20, 2020

bors commented Feb 20, 2020

bors commented Feb 20, 2020

Miscellaneous inlining improvements #69256

Miscellaneous inlining improvements #69256

Conversation

nnethercote commented Feb 18, 2020

nnethercote commented Feb 18, 2020

rust-timer commented Feb 18, 2020

bors commented Feb 18, 2020

bors commented Feb 18, 2020

nnethercote commented Feb 18, 2020

bors commented Feb 18, 2020

nnethercote commented Feb 18, 2020

Centril commented Feb 18, 2020 • edited Loading

bors commented Feb 19, 2020

rust-timer commented Feb 19, 2020

nnethercote commented Feb 19, 2020 • edited Loading

rust-timer commented Feb 19, 2020

bjorn3 commented Feb 19, 2020

mati865 commented Feb 19, 2020

nnethercote commented Feb 19, 2020

bors commented Feb 19, 2020

Dylan-DPC-zz commented Feb 20, 2020

bors commented Feb 20, 2020

bors commented Feb 20, 2020

Centril commented Feb 18, 2020 •

edited

Loading

nnethercote commented Feb 19, 2020 •

edited

Loading