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Why doesn't the C++ standard library utilize likely/unlikely attributes?

score 189 · Answer 1 · 2024-01-08T13:44:29.167000

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189

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Why doesn't the C++ standard library utilize likely/unlikely attributes?

189 views Asked by Viktor Sehr At 08 January 2024 at 13:44

score 212 · Answer 2 · 2023-07-06T11:47:22.697000

Where the likely/unlikely statement should be placed for more performance?

212 views Asked by NK-cell At 06 July 2023 at 11:47

score 489 · Answer 3 · 2023-04-28T21:48:22.783000

Guidelines for using [[likely]] / [[unlikely]] attributes in c++20

489 views Asked by Dinesh Maurya At 28 April 2023 at 21:48

score 156 · Answer 4 · 2023-01-24T17:13:27.457000

Do likelihood attributes make sense with a single if statement?

156 views Asked by Kaiyakha At 24 January 2023 at 17:13

score 153 · Answer 5 · 2023-01-12T18:45:35.000000

The correct usage of unlikely macro in multiple conditions

153 views Asked by Evandro Coan At 12 January 2023 at 18:45

score 604 · Answer 6 · 2022-06-02T06:55:26.450000

Why isn’t my code with C++20 likely/unlikely attributes faster?

604 views Asked by dizhouw2 At 02 June 2022 at 06:55

score 611 · Answer 7 · 2022-05-25T09:14:26.300000

[[(un)likely]] attributes and do-while loops

611 views Asked by VainMan At 25 May 2022 at 09:14

score 2666 · Answer 8 · 2022-01-05T23:00:19.767000

Can I improve branch prediction with my code?

2.6k views Asked by slomobile At 05 January 2022 at 23:00

score 111 · Answer 9 · 2021-07-06T19:58:16.690000

MSVC C++ compiler giving inconsistent performance on different builds of the same code when using [[unlikely/likely]] attributes

111 views Asked by name At 06 July 2021 at 19:58

score 2462 · Answer 10 · 2020-06-05T18:45:14.643000

Simple example where [[likely]] and [[unlikely]] affect program assembly?

2.4k views Asked by Alecto Irene Perez At 05 June 2020 at 18:45

score 1581 · Answer 11 · 2020-02-03T19:37:28.360000

What does .text.unlikely mean in ELF object files?

1.5k views Asked by einpoklum At 03 February 2020 at 19:37

score 236 · Answer 12 · 2020-01-11T14:55:24.727000

c++20 Likely and Unlikely performance optimization

236 views Asked by Zig Razor At 11 January 2020 at 14:55

score 1337 · Answer 13 · 2019-06-01T06:18:54.213000

Why doesn't likely and unlikely macros have any effect on ARM assembly code?

1.3k views Asked by bornfree At 01 June 2019 at 06:18

score 26305 · Answer 14 · 2018-08-11T08:36:40.593000

How to use C++20's likely/unlikely attribute in if-else statement

26.3k views Asked by Leedehai At 11 August 2018 at 08:36

score 3044 · Answer 15 · 2017-06-26T09:42:08.987000

Should I use if unlikely for hard crashing errors?

3k views Asked by Adam Hunyadi At 26 June 2017 at 09:42

score 7645 · Answer 16 · 2016-08-18T23:48:25.890000

Using Likely() / Unlikely() Preprocessor Macros in if-else if chain

7.6k views Asked by Lars At 18 August 2016 at 23:48

score 812 · Answer 17 · 2016-07-13T17:41:07.563000

likely()/unlikely() macros in the Linux kernel with a segmentation fault

812 views Asked by user3224083 At 13 July 2016 at 17:41

score 2495 · Answer 18 · 2014-01-26T21:46:08.537000

Linux Kernel: likely() vs unlikely()

2.4k views Asked by Ace At 26 January 2014 at 21:46

score 221 · Answer 19 · 2012-12-09T06:57:35.257000

What's the point of "unlikely()"?

221 views Asked by Ivan At 09 December 2012 at 06:57

score 5562 · Answer 20 · 2012-06-06T21:29:23.557000

gcc likely unlikely macro usage

5.5k views Asked by leon At 06 June 2012 at 21:29

TechQA.

List Question

Why doesn't the C++ standard library utilize likely/unlikely attributes?

Where the likely/unlikely statement should be placed for more performance?

Guidelines for using [[likely]] / [[unlikely]] attributes in c++20

Do likelihood attributes make sense with a single if statement?

The correct usage of unlikely macro in multiple conditions

Why isn’t my code with C++20 likely/unlikely attributes faster?

[[(un)likely]] attributes and do-while loops

Can I improve branch prediction with my code?

MSVC C++ compiler giving inconsistent performance on different builds of the same code when using [[unlikely/likely]] attributes

Simple example where [[likely]] and [[unlikely]] affect program assembly?

What does .text.unlikely mean in ELF object files?

c++20 Likely and Unlikely performance optimization

Why doesn't likely and unlikely macros have any effect on ARM assembly code?

How to use C++20's likely/unlikely attribute in if-else statement

Should I use if unlikely for hard crashing errors?

Using Likely() / Unlikely() Preprocessor Macros in if-else if chain

likely()/unlikely() macros in the Linux kernel with a segmentation fault

Linux Kernel: likely() vs unlikely()

What's the point of "unlikely()"?

gcc likely unlikely macro usage

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