Nikolas Klauser
d965960fcf
Revert "[libc++] Optimize for_each for segmented iterators"
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This reverts commit b1dc43aa3a05c2f14725e2e6428544208ccbe161.
2023-06-05 10:00:02 -07:00
Nikolas Klauser
b1dc43aa3a
[libc++] Optimize for_each for segmented iterators
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```
---------------------------------------------------
Benchmark old new
---------------------------------------------------
bm_for_each/1 3.00 ns 2.98 ns
bm_for_each/2 4.53 ns 4.57 ns
bm_for_each/3 5.82 ns 5.82 ns
bm_for_each/4 6.94 ns 6.91 ns
bm_for_each/5 7.55 ns 7.75 ns
bm_for_each/6 7.06 ns 7.45 ns
bm_for_each/7 6.69 ns 7.14 ns
bm_for_each/8 6.86 ns 4.06 ns
bm_for_each/16 11.5 ns 5.73 ns
bm_for_each/64 43.7 ns 4.06 ns
bm_for_each/512 356 ns 7.98 ns
bm_for_each/4096 2787 ns 53.6 ns
bm_for_each/32768 20836 ns 438 ns
bm_for_each/262144 195362 ns 4945 ns
bm_for_each/1048576 685482 ns 19822 ns
```
Reviewed By: ldionne, Mordante, #libc
Spies: arichardson, libcxx-commits
Differential Revision: https://reviews.llvm.org/D151274
2023-05-31 18:15:25 -07:00
Nikolas Klauser
1fd08edd58
[libc++] Forward to std::{,w}memchr in std::find
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Reviewed By: #libc, ldionne
Spies: Mordante, libcxx-commits, ldionne, mikhail.ramalho
Differential Revision: https://reviews.llvm.org/D144394
2023-05-25 07:59:50 -07:00
Nikolas Klauser
aff3cdc604
[libc++] Optimize std::ranges::{min, max} for types that are cheap to copy
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Don't forward to `min_element` for small types that are trivially copyable, and instead use a naive loop that keeps track of the smallest element (as opposed to an iterator to the smallest element). This allows the compiler to vectorize the loop in some cases.
Reviewed By: #libc, ldionne
Spies: ldionne, libcxx-commits
Differential Revision: https://reviews.llvm.org/D143596
2023-03-11 16:28:24 +01:00
Nikolas Klauser
b4ecfd3c46
[libc++] Forward to std::memcmp for trivially comparable types in equal
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Reviewed By: #libc, ldionne
Spies: ldionne, Mordante, libcxx-commits
Differential Revision: https://reviews.llvm.org/D139554
2023-02-21 17:11:21 +01:00
Louis Dionne
355e0ce3c5
[libc++] Extend check for non-ASCII characters to src/, test/ and benchmarks/
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Differential Revision: https://reviews.llvm.org/D132180
2022-08-23 18:36:38 -04:00
Konstantin Varlamov
c945bd0da6
[libc++][ranges] Implement modifying heap algorithms:
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- `ranges::make_heap`;
- `ranges::push_heap`;
- `ranges::pop_heap`;
- `ranges::sort_heap`.
Differential Revision: https://reviews.llvm.org/D128115
2022-07-08 13:48:41 -07:00
Konstantin Varlamov
94c7b89fe5
[libc++][ranges] Implement ranges::stable_sort.
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Differential Revision: https://reviews.llvm.org/D127834
2022-07-01 16:34:26 -07:00
Konstantin Varlamov
ff3989e6ae
[libc++][ranges] Implement ranges::sort.
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Differential Revision: https://reviews.llvm.org/D127557
2022-06-16 15:21:06 -07:00
Nikolas Klauser
8171586176
[libc++][ranges] Implement ranges::binary_search and ranges::{lower, upper}_bound
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Reviewed By: Mordante, var-const, ldionne, #libc
Spies: sstefan1, libcxx-commits, mgorny
Differential Revision: https://reviews.llvm.org/D121964
2022-06-06 13:33:18 +02:00
Nikolas Klauser
f94a447679
[libc++] Granularize algorithm benchmarks
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Reviewed By: ldionne, #libc
Spies: libcxx-commits, mgorny, mgrang
Differential Revision: https://reviews.llvm.org/D124740
2022-05-19 16:13:52 +02:00
