Rollup of 8 pull requests #64354
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Rollup of 8 pull requests #64354
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On architectures such as powerpc64 that use extend_integer_width_to in their C ABI processing, integer parameters shorter than the native register width will be annotated with the ArgAttribute::SExt or ArgAttribute::ZExt attribute, and that attribute will be included in the generated LLVM IR. In this test, all relevant parameters are `i32`, which will get the `signext` annotation on the relevant 64-bit architectures. Match both the annotated and non-annotated case, but enforce that the annotation is applied consistently.
This commit changes the HIR lowering around `await` so that temporary
lifetimes are extended. Previously, await was lowered as:
```rust
{
let mut pinned = future;
loop {
match ::std::future::poll_with_tls_context(unsafe {
<::std::pin::Pin>::new_unchecked(&mut pinned)
}) {
::std::task::Poll::Ready(result) => break result,
::std::task::Poll::Pending => {}
}
yield ();
}
}
```
With this commit, await is lowered as:
```rust
match future {
mut pinned => loop {
match ::std::future::poll_with_tls_context(unsafe {
<::std::pin::Pin>::new_unchecked(&mut pinned)
}) {
::std::task::Poll::Ready(result) => break result,
::std::task::Poll::Pending => {}
}
yield ();
}
}
```
However, this change has the following side-effects:
- All temporaries in future will be considered to live across a
yield for the purpose of auto-traits.
- Borrowed temporaries in future are likely to be considered to be live
across the yield for the purpose of the generator transform.
Signed-off-by: David Wood <[email protected]>
Make `abs`, `wrapping_abs`, `overflowing_abs` const functions This makes `abs`, `wrapping_abs` and `overflowing_abs` const functions like rust-lang#58044 makes `wrapping_neg` and `overflowing_neg` const functions. `abs` is made const by returning `(self ^ -1) - -1` = `!self + 1` = `-self` for negative numbers and `(self ^ 0) - 0` = `self` for non-negative numbers. The subexpression `self >> ($BITS - 1)` evaluates to `-1` for negative numbers and `0` otherwise. The subtraction overflows when `self` is `min_value()`, as we would be subtracting `max_value() - -1`; this is when `abs` should overflow. `wrapping_abs` and `overflowing_abs` make use of `wrapping_sub` and `overflowing_sub` instead of the subtraction operator.
Add Yaah to clippy toolstain notification list
…xcrichton test/c-variadic: Fix patterns on powerpc64 On architectures such as powerpc64 that use extend_integer_width_to in their C ABI processing, integer parameters shorter than the native register width will be annotated with the ArgAttribute::SExt or ArgAttribute::ZExt attribute, and that attribute will be included in the generated LLVM IR. In this test, all relevant parameters are `i32`, which will get the `signext` annotation on the relevant 64-bit architectures. Match both the annotated and non-annotated case, but enforce that the annotation is applied consistently.
…ry-lifetimes, r=matthewjasper lowering: extend temporary lifetimes around await Fixes rust-lang#63832. r? @matthewjasper cc @nikomatsakis
lldb: avoid mixing "Hit breakpoint" message with other output. This is to get `src/test/debuginfo/lexical-scopes-in-block-expression.rs` working. It used to work like a week ago, and the main change that happened was I switched from Python 2 to Python 3 (I don't remember why, but I did get rid of the build dir entirely, and it fixed something else). The error was: ``` error: line not found in debugger output: [...]$27 = 10 ``` Relevant part of the output: ``` print val (long) $26 = 15 print ten (long) $27 = 10 Hit breakpoint 15.1: where = a`lexical_scopes_in_block_expression::main::hcdd5c3caa9166e73 + 1223 at lexical-scopes-in-block-expression.rs:504:4, address = 0x00005555555556e7, resolved, hit count = 1 Hit breakpoint 16.1: where = a`lexical_scopes_in_block_expression::main::hcdd5c3caa9166e73 + 631 at lexical-scopes-in-block-expression.rs:510:8, address = 0x0000555555555497, resolved, hit count = 1 ``` There are most `print` commands and their outputs before, and more `Hit breakpoint` messages afterwards, so I assume what happens is the `Hit breakpoint` messages should be interleaved but somehow they ended up being buffered after all of the other output. As a stopgap measure I'm adding a newline before each `Hit breakpoint` so they don't end up on the same line as the last `print` output (which breaks our pattern-matching). r? @michaelwoerister
…illaumeGomez Clarify E0507 to note Fn/FnMut relationship to borrowing Fixes rust-lang#37904.
Changed instant is earlier to instant is later Fixed the documentation issue from rust-lang#64322
…kernel, r=oli-obk rustc_mir: buffer -Zdump-mir output instead of pestering the kernel constantly. This brings `mir-opt` tests from `197s` (over 3 minutes!) to `2.85s`, on my build server. That's a nice speedup of about `69x` and so it definitely fixes rust-lang#58485, for me. It's such a beginner mistake I feel like maybe `clippy` should lint against it? (cc @Manishearth @oli-obk)
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@bors r+ p=8 rollup=never |
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📌 Commit 8d2ef19 has been approved by |
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Rollup of 8 pull requests Successful merges: - #63786 (Make `abs`, `wrapping_abs`, `overflowing_abs` const functions) - #63989 (Add Yaah to clippy toolstain notification list) - #64256 (test/c-variadic: Fix patterns on powerpc64) - #64292 (lowering: extend temporary lifetimes around await) - #64311 (lldb: avoid mixing "Hit breakpoint" message with other output.) - #64330 (Clarify E0507 to note Fn/FnMut relationship to borrowing) - #64331 (Changed instant is earlier to instant is later) - #64344 (rustc_mir: buffer -Zdump-mir output instead of pestering the kernel constantly.) Failed merges: r? @ghost
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☀️ Test successful - checks-azure |
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Tested on commit rust-lang/rust@34e82a7. Direct link to PR: <rust-lang/rust#64354> 💔 miri on windows: test-pass → test-fail (cc @oli-obk @RalfJung @eddyb, @rust-lang/infra). 💔 miri on linux: test-pass → test-fail (cc @oli-obk @RalfJung @eddyb, @rust-lang/infra).
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Successful merges:
abs,wrapping_abs,overflowing_absconst functions #63786 (Makeabs,wrapping_abs,overflowing_absconst functions)Failed merges:
r? @ghost