Rollup of 7 pull requests #126671
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Rollup of 7 pull requests #126671
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We can't mix them with candidates below them, but we can mix them with candidates above.
Co-authored-by: Oli Scherer <github35764891676564198441@oli-obk.de>
…compatible lifetimes
Currently the docs show e.g.
{transmute(0xfffeffffffffffffffffffffffffffff): f128}
for f128 constants. This should fix that to instead use apfloat for
printing, as is done for `f32` and `f64`.
…r-errors Test that opaque types can't have themselves as a hidden type with incompatible lifetimes fixes rust-lang#122876 This PR used to add extra logic to prevent those cases, but after rust-lang#113169 this is implicitly rejected, because such usages are not defining.
…field, r=jackh726 Suggest removing unused tuple fields if they are the last fields Fixes rust-lang#124556 We now check if dead/unused fields are the last fields of the tuple and suggest their removal instead of suggesting them to be changed to `()`.
…=jieyouxu Migrate `bin-emit-no-symbols` `run-make` test to `rmake` Part of rust-lang#121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html). try-job: x86_64-msvc try-job: armhf-gnu
…, r=matthewjasper
match lowering: expand or-candidates mixed with candidates above
This PR tweaks match lowering of or-patterns. Consider this:
```rust
match (x, y) {
(1, true) => 1,
(2, false) => 2,
(1 | 2, true | false) => 3,
(3 | 4, true | false) => 4,
_ => 5,
}
```
One might hope that this can be compiled to a single `SwitchInt` on `x` followed by some boolean checks. Before this PR, we compile this to 3 `SwitchInt`s on `x`, because an arm that contains more than one or-pattern was compiled on its own. This PR groups branch `3` with the two branches above, getting us down to 2 `SwitchInt`s on `x`.
We can't in general expand or-patterns freely, because this interacts poorly with another optimization we do: or-pattern simplification. When an or-pattern doesn't involve bindings, we branch the success paths of all its alternatives to the same block. The drawback is that in a case like:
```rust
match (1, true) {
(1 | 2, false) => unreachable!(),
(2, _) => unreachable!(),
_ => {}
}
```
if we used a single `SwitchInt`, by the time we test `false` we don't know whether we came from the `1` case or the `2` case, so we don't know where to go if `false` doesn't match.
Hence the limitation: we can process or-pattern alternatives alongside candidates that precede it, but not candidates that follow it. (Unless the or-pattern is the only remaining match pair of its candidate, in which case we can process it alongside whatever).
This PR allows the processing of or-pattern alternatives alongside candidates that precede it. One benefit is that we now process or-patterns in a single place in `mod.rs`.
r? ``@matthewjasper``
…drop-glue, r=oli-obk Make async drop code more consistent with regular drop code Fixes rust-lang#126573 Relates to rust-lang#126482 r? ````@petrochenkov````
…jackh726
Make pretty printing for `f16` and `f128` consistent
Currently the docs show e.g.
{transmute(0xfffeffffffffffffffffffffffffffff): f128}
for f128 constants. This should fix that to instead use apfloat for printing, as is done for `f32` and `f64`.
…r-errors rustc_type_ir: Omit some struct fields from Debug output r? compiler-errors or compiler
rustbot
added
A-run-make
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@bors r+ rollup=never p=5 |
bors
added
S-waiting-on-bors
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☀️ Test successful - checks-actions |
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📌 Perf builds for each rolled up PR:
previous master: 3c0f019b3c In the case of a perf regression, run the following command for each PR you suspect might be the cause: |
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Finished benchmarking commit (5978f35): 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)Results (primary 4.8%)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.
CyclesResults (primary 1.3%, secondary 3.4%)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.
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: 689.514s -> 691.592s (0.30%) |
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Curious if #126553 might be the cause of the improvement. @rust-timer build 26f62e4 |
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Finished benchmarking commit (26f62e4): comparison URL. Overall result: ✅ improvements - no action neededInstruction 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 3.3%)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.
CyclesResults (primary 1.3%, secondary 2.3%)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.
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: 689.514s -> 691.983s (0.36%) |
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Successful merges:
bin-emit-no-symbolsrun-maketest tormake#125787 (Migratebin-emit-no-symbolsrun-maketest tormake)f16andf128consistent #126654 (Make pretty printing forf16andf128consistent)r? @ghost
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