StackOverflow Questions for Tag: swar

fantasie

Reputation: 307

How to perform addition of two vectors of 8-bit integers with a single addition in C/C++

c++cswar

Score: 5

Answers: 4

CPlus

Reputation: 4846

How can I populate an array with multiple copies of a small value with the fewest operations possible?

coptimizationintegerbit-manipulationswar

Score: -2

Answers: 1

adrianton3

Reputation: 2358

What is the fastest way to add 16 small numbers

c++performancesimdinteger-arithmeticswar

Score: 5

Answers: 4

Umbra

Reputation: 123

Add two vectors (uint64_t type) with saturation for each int8_t element

assemblybit-manipulationx86-64saturation-arithmeticswar

Score: 0

Answers: 4

CPlus

Reputation: 4846

Can packing variables or parameters into structures/unions introduce unforseen performance penalties?

cgccstructmicro-optimizationswar

Score: 1

Answers: 1

user20746246

Reputation:

Fastest way to find 16bit match in a 4 element short array?

cx86-64micro-optimizationswar

Score: 1

Answers: 3

HeapUnderStop

Reputation: 398

Speed up strlen using SWAR in x86-64 assembly

assemblyx86-64micro-optimizationstrlenswar

Score: 1

Answers: 1

HeapUnderStop

Reputation: 398

How to check if a register contains a zero byte without SIMD instructions

assemblybit-manipulationx86-64simdswar

Score: 0

Answers: 1

swineone

Reputation: 2824

SIMD-within-a-register version of min/max

cassemblybit-manipulationarm64swar

Score: 13

Answers: 1

Chayim Friedman

Reputation: 71330

Multiplication of two packed signed integers in one

c++bit-manipulationstockfishswar

Score: 5

Answers: 4

Moonchild

Reputation: 560

Performantly reverse the order of 16-bit quantities within a 64-bit word

performanceassemblyoptimizationx86-64swar

Score: 3

Answers: 1

Vic C

Reputation: 11

bit twiddling to right pack bits

bit-manipulationsimdswar

Score: 0

Answers: 2

Gaith

Reputation: 828

How does this algorithm to count the number of set bits in a 32-bit integer work?

c++calgorithmhammingweightswar

Score: 25

Answers: 4

Koz Ross

Reputation: 3140

How to implement SWAR unsigned less-than?

cbit-manipulationswar

Score: 6

Answers: 4

Koz Ross

Reputation: 3140

How to write a SWAR comparison which puts 0xFF in a lane on matches?

cbit-manipulationswar

Score: 1

Answers: 2

Koz Ross

Reputation: 3140

SWAR byte counting methods from 'Bit Twiddling Hacks' - why do they work?

cbit-manipulationswar

Score: 1

Answers: 2

Doug

Reputation: 11

Signed INT Conversion of MSB ->LSB and LSB->MSB in C++

c++bit-manipulationreverseswar

Score: 0

Answers: 2

sac

Reputation: 1

How 0x01010101 is equivalent to 1<<24 + 1<<16 + 1<<8 + 1

binarybit-manipulationbitwise-operatorsbit-shiftswar

Score: -1

Answers: 3

Luke Davis

Reputation: 163

Can a register hold multiple values at a time?

assemblyx86-64simdcpu-registersswar

Score: 4

Answers: 2

cam-white

Reputation: 710

Subtracting packed 8-bit integers in an 64-bit integer by 1 in parallel, SWAR without hardware SIMD

c++cbit-manipulationsimdswar

Score: 80

Answers: 8

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StackOverflow Questions for Tag: swar

How to perform addition of two vectors of 8-bit integers with a single addition in C/C++

How can I populate an array with multiple copies of a small value with the fewest operations possible?

What is the fastest way to add 16 small numbers

Add two vectors (uint64_t type) with saturation for each int8_t element

Can packing variables or parameters into structures/unions introduce unforseen performance penalties?

Fastest way to find 16bit match in a 4 element short array?

Speed up strlen using SWAR in x86-64 assembly

How to check if a register contains a zero byte without SIMD instructions

SIMD-within-a-register version of min/max

Multiplication of two packed signed integers in one

Performantly reverse the order of 16-bit quantities within a 64-bit word

bit twiddling to right pack bits

How does this algorithm to count the number of set bits in a 32-bit integer work?

How to implement SWAR unsigned less-than?

How to write a SWAR comparison which puts 0xFF in a lane on matches?

SWAR byte counting methods from &#39;Bit Twiddling Hacks&#39; - why do they work?

Signed INT Conversion of MSB -&gt;LSB and LSB-&gt;MSB in C++

How 0x01010101 is equivalent to 1&lt;&lt;24 + 1&lt;&lt;16 + 1&lt;&lt;8 + 1

Can a register hold multiple values at a time?

Subtracting packed 8-bit integers in an 64-bit integer by 1 in parallel, SWAR without hardware SIMD

SWAR byte counting methods from 'Bit Twiddling Hacks' - why do they work?

Signed INT Conversion of MSB ->LSB and LSB->MSB in C++

How 0x01010101 is equivalent to 1<<24 + 1<<16 + 1<<8 + 1