Question

Why newer clang is generating one more instruction than just popcntl to count the bits of an int on haswell architecture?

score 150 · Answer 1 · 2023-08-28T07:47:17.653000

150

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Why newer clang is generating one more instruction than just popcntl to count the bits of an int on haswell architecture?

Published on 28 August 2023 at 07:47

score 811 · Answer 2 · 2023-07-17T15:08:01.827000

811

Views

How can I use the "builtin" function __builtin_ctzll in a VS C++ Project?

Published on 17 July 2023 at 15:08

score 229 · Answer 3 · 2023-02-14T00:15:14.013000

229

Views

message output not working due to BitCount and Length being zero

Published on 14 February 2023 at 00:15

score 212 · Answer 4 · 2022-09-18T16:02:35.053000

212

Views

32 bit builtin population count for clang counts long long integer c++

Published on 18 September 2022 at 16:02

score 298 · Answer 5 · 2019-10-11T07:25:26.007000

298

Views

XOR operation and BitCount in Java on Long variables returns java.lang.NumberFormatException

Published on 11 October 2019 at 07:25

score 980 · Answer 6 · 2018-07-23T09:37:29.390000

980

Views

Matrix transpose and population count

Published on 23 July 2018 at 09:37

score 6.4k · Answer 7 · 2018-04-28T22:04:34.307000

6.4k

Views

Counting 1 bits (population count) on large data using AVX-512 or AVX-2

Published on 28 April 2018 at 22:04

score 620 · Answer 8 · 2017-07-26T14:05:22.273000

620

Views

Counting number of '1' values in each bit position in Redshift column

Published on 26 July 2017 at 14:05

score 2.6k · Answer 9 · 2017-05-29T21:08:49.700000

2.6k

Views

Java - Big O of bitCount()?

Published on 29 May 2017 at 21:08

score 1.5k · Answer 10 · 2017-05-21T05:01:56.093000

1.5k

Views

How does Long.bitCount() finds the number of set bits?

Published on 21 May 2017 at 05:01

score 268 · Answer 11 · 2017-01-15T13:05:04.800000

268

Views

Calculate Hamming Distance in SQLite

Published on 15 January 2017 at 13:05

score 12k · Answer 12 · 2016-06-30T03:02:16.527000

12k

Views

what's the difference between __builtin_popcountll and_mm_popcnt_u64?

Published on 30 June 2016 at 03:02

score 696 · Answer 13 · 2016-04-17T19:46:09.603000

696

Views

Trouble doing a bitwise xor + bit_count in mysql

Published on 17 April 2016 at 19:46

score 7.3k · Answer 14 · 2016-02-04T04:48:38.577000

7.3k

Views

Can someone explain how this bitCount code works?

Published on 04 February 2016 at 04:48

score 638 · Answer 15 · 2016-02-03T10:38:10.007000

638

Views

MongoDB support search Bitwise XOR and Bit Count?

Published on 03 February 2016 at 10:38

score 2.9k · Answer 16 · 2015-11-20T09:09:12.900000

2.9k

Views

Counting number of 1 bits in C++ negative number

Published on 20 November 2015 at 09:09

score 278 · Answer 17 · 2015-05-15T07:14:21.883000

278

Views

redis bitcount example not working

Published on 15 May 2015 at 07:14

score 3.4k · Answer 18 · 2015-05-01T12:40:06.527000

3.4k

Views

LC3 Bit Counter

Published on 01 May 2015 at 12:40

score 853 · Answer 19 · 2014-12-04T11:51:36.187000

853

Views

Mysql convert varchar binary representation field to binary to do hamming distance calculation with bit_count

Published on 04 December 2014 at 11:51

score 857 · Answer 20 · 2014-10-01T15:57:22.757000

857

Views

Bitwise - bitCount's formula meaning?

Published on 01 October 2014 at 15:57

List Question

Why newer clang is generating one more instruction than just popcntl to count the bits of an int on haswell architecture?

How can I use the "builtin" function __builtin_ctzll in a VS C++ Project?

message output not working due to BitCount and Length being zero

32 bit builtin population count for clang counts long long integer c++

XOR operation and BitCount in Java on Long variables returns java.lang.NumberFormatException

Matrix transpose and population count

Counting 1 bits (population count) on large data using AVX-512 or AVX-2

Counting number of '1' values in each bit position in Redshift column

Java - Big O of bitCount()?

How does Long.bitCount() finds the number of set bits?

Calculate Hamming Distance in SQLite

what's the difference between __builtin_popcountll and_mm_popcnt_u64?

Trouble doing a bitwise xor + bit_count in mysql

Can someone explain how this bitCount code works?

MongoDB support search Bitwise XOR and Bit Count?

Counting number of 1 bits in C++ negative number

redis bitcount example not working

LC3 Bit Counter

Mysql convert varchar binary representation field to binary to do hamming distance calculation with bit_count

Bitwise - bitCount's formula meaning?

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