Rollup of 12 pull requests #73779
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Rollup of 12 pull requests #73779
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Speedup vec![1_i8; N] for non-zero element.
Before
test do_bench_from_elem_i8 ... bench: 130 ns/iter (+/- 7) = 61 MB/s
test do_bench_from_elem_u8 ... bench: 121 ns/iter (+/- 4) = 66 MB/s
After
test do_bench_from_elem_i8 ... bench: 123 ns/iter (+/- 7) = 65 MB/s
test do_bench_from_elem_u8 ... bench: 121 ns/iter (+/- 5) = 66 MB/s
No speed difference if element is already zero.
#[bench]
fn do_bench_from_elem_i8(b: &mut Bencher) {
b.bytes = 8 as u64;
b.iter(|| {
let dst = ve::vec![10_i8; 100];
assert_eq!(dst.len(), 100);
assert!(dst.iter().all(|x| *x == 10));
})
}
As suggested by @cuviper
https://rust-lang.zulipchat.com/#narrow/stream/219381-t-libs/topic/SpecForElem.20for.20other.20integers
Co-authored-by: Bastian Kauschke <bastian_kauschke@hotmail.de>
- Pass around document_private a lot more - Add tests + Add tests for intra-doc links to private items + Add ignored tests for warnings in reference links
Warn if linking to a private item Closes rust-lang#72769 r? @GuillaumeGomez
Fortanix SGX target libunwind build process changes Ticket: fortanix/rust-sgx#174 LLVM related changes (merged): rust-lang/llvm-project#57 Description: libunwind changes needed to run code in sgx environment via rust-sgx. Target that uses this in rust: x86_64-fortanix-unknown-sgx. Without this change, rust std for this toolchain is forced to use a precompiled library loaded via environment variable. With this change we act the same as musl target.
Perform obligation deduplication to avoid buggy `ExistentialMismatch` Address rust-lang#59326.
…r=cuviper
Add liballoc impl SpecFromElem for i8
Speedup vec![1_i8; N] for non-zero element.
Before
test do_bench_from_elem_i8 ... bench: 130 ns/iter (+/- 7) = 61 MB/s
test do_bench_from_elem_u8 ... bench: 121 ns/iter (+/- 4) = 66 MB/s
After
test do_bench_from_elem_i8 ... bench: 123 ns/iter (+/- 7) = 65 MB/s
test do_bench_from_elem_u8 ... bench: 121 ns/iter (+/- 5) = 66 MB/s
No speed difference if element is already zero.
```rust
#[bench]
fn do_bench_from_elem_i8(b: &mut Bencher) {
b.bytes = 8 as u64;
b.iter(|| {
let dst = ve::vec![10_i8; 100];
assert_eq!(dst.len(), 100);
assert!(dst.iter().all(|x| *x == 10));
})
}
```
As suggested by @cuviper
https://rust-lang.zulipchat.com/#narrow/stream/219381-t-libs/topic/SpecForElem.20for.20other.20integers
r? @cuviper
CC @joshtriplett
Edit: Wow, I just realized both reviewers are Josh.
…aster add missing doc links The doc comments contain ``[`size_of_val`]`` but the link target was missing.
…Simulacrum Shortcuts for min/max on double-ended BTreeMap/BTreeSet iterators Closes rust-lang#59947: a performance tweak that might benefit some. Optimizes `min` and `max ` on all btree double-ended iterators that do not drop, i.e. the iterators created by: - `BTreeMap::iter` - `BTreeMap::iter_mut` - `BTreeMap::keys` and `BTreeSet::iter` - `BTreeMap::range` and `BTreeSet::range` - `BTreeMap::range_mut` Also in these (currently) single-ended iterators, but obviously for `min` only: - `BTreeSet::difference` - `BTreeSet::intersection` - `BTreeSet::symmetric_difference` - `BTreeSet::union` Did not do this in iterators created by `into_iter` to preserve drop order, as outlined in rust-lang#62316. Did not do this in iterators created by `drain_filter`, possibly to preserve drop order, possibly to preserve predicate invocation, mostly to not have to think about it too hard (I guess maybe it wouldn't be a change for `min`, which is the only shortcut possible in this single-ended iterator).
…=Mark-Simulacrum Bootstrap: detect Windows based on sys.platform Closes rust-lang#73689.
…Mark-Simulacrum Document the Self keyword Partial fix of rust-lang#34601. Document the `Self` keyword. This contains simple examples of the places where `Self` can be used.
…aster Document the super keyword Partial fix of rust-lang#34601. Quite short, just a small example and a link to the reference. @rustbot modify labels: T-doc,C-enhancement
…ywiser Document some invariants correctly/more r? @wesleywiser
Remove irrelevant comment Iterator is no longer a lang item since 216e72f.
…hievink Remove blank line
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This was referenced Jun 27, 2020
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Successful merges:
ExistentialMismatch#73485 (Perform obligation deduplication to avoid buggyExistentialMismatch)Failed merges:
r? @ghost