StackOverflow Questions for Tag: micro-optimization

Venusaur

Reputation: 385

Is it "too clever" for using LEA to load constant to register?

assemblyx86-64nasmmicro-optimization

Score: 6

Answers: 2

Armen Michaeli

Reputation: 9170

Use two loop bodies or one (result identical)?

coptimizationcachingcpumicro-optimization

Score: 13

Answers: 7

vengy

Reputation: 2257

Using the operand-size override prefix 0x66 for instruction alignment

assemblyx86-64masmmemory-alignmentmicro-optimization

Score: 4

Answers: 1

ListigerLurch

Reputation: 73

Fast copy and replicate (or fill) byte array with another byte array

c#optimizationsimdunsafemicro-optimization

Score: 3

Answers: 1

Jeremy Salwen

Reputation: 8418

Extract fractional part of double efficiently in C

cfloating-pointdoublemicro-optimizationbit-manipulation

Score: 25

Answers: 7

12345ieee

Reputation: 509

Optimize std::vector comparison to memcmp

c++micro-optimizationc++23

Score: 3

Answers: 0

eof

Reputation: 557

Parsing 12 byte buffer into two u64

rustmicro-optimization

Score: 0

Answers: 0

Per

Reputation: 39

optimize indexing while inside of a loop

rustx86compiler-optimizationmicro-optimizationprefetch

Score: 1

Answers: 0

Michael Liu

Reputation: 55499

Why is my operator ++ more than twice as fast as its equivalent instance method?

c#.net-coremicro-optimizationbenchmarkdotnet

Score: 4

Answers: 2

BeeOnRope

Reputation: 65046

Is performance reduced when executing loops whose uop count is not a multiple of processor width?

performanceassemblyx86cpu-architecturemicro-optimization

Score: 46

Answers: 3

micycle

Reputation: 3820

Optimal algorithm for distance between one point and all others in a grid

algorithmgeometrycoordinatesdiscrete-mathematicsmicro-optimization

Score: 2

Answers: 2

doraemon

Reputation: 2512

what is the purpose of using index caches in rigtorp's SPSCQueue

queuecpu-architecturecpu-cachemicro-optimizationlock-free

Score: 1

Answers: 2

njuffa

Reputation: 26185

Branchless count-leading-zeros on 32-bit RISC-V without Zbb extension

algorithmbit-manipulationriscvmicro-optimizationriscv32

Score: 8

Answers: 3

Greg Kennedy

Reputation: 644

Performance of local variable vs. array access

performancebenchmarkingmicro-optimizationperl

Score: 5

Answers: 2

Alex Guteniev

Reputation: 13719

What is the correct and optimal implementation of atomic_ref and atomic with padding bits?

c++x86c++20micro-optimizationstdatomic

Score: 3

Answers: 1

njuffa

Reputation: 26185

Fast BCD addition

calgorithmbit-manipulationmicro-optimizationbcd

Score: 14

Answers: 1

Joseph

Reputation: 401

Which is the best way, in C, to see if a number is divisible by another?

cmathoptimizationmicro-optimizationinteger-division

Score: 4

Answers: 6

billpg

Reputation: 3293

What is the most optimal way to use a C# struct as the key of a dictionary?

c#.netoptimizationmicro-optimization

Score: 8

Answers: 2

qwark

Reputation: 533

Very fast approximate Logarithm (natural log) function in C++?

c++mathlogarithmmicro-optimizationsqrt

Score: 20

Answers: 8

user2059893

Reputation: 447

Is there any data on the latency of an AVX2 gather instruction?

performancex86latencymicro-optimizationavx2

Score: 5

Answers: 3

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StackOverflow Questions for Tag: micro-optimization

Is it &quot;too clever&quot; for using LEA to load constant to register?

Use two loop bodies or one (result identical)?

Using the operand-size override prefix 0x66 for instruction alignment

Fast copy and replicate (or fill) byte array with another byte array

Extract fractional part of double *efficiently* in C

Optimize std::vector comparison to memcmp

Parsing 12 byte buffer into two u64

optimize indexing while inside of a loop

Why is my operator ++ more than twice as fast as its equivalent instance method?

Is performance reduced when executing loops whose uop count is not a multiple of processor width?

Optimal algorithm for distance between one point and all others in a grid

what is the purpose of using index caches in rigtorp&#39;s SPSCQueue

Branchless count-leading-zeros on 32-bit RISC-V without Zbb extension

Performance of local variable vs. array access

What is the correct and optimal implementation of atomic_ref and atomic with padding bits?

Fast BCD addition

Which is the best way, in C, to see if a number is divisible by another?

What is the most optimal way to use a C# struct as the key of a dictionary?

Very fast approximate Logarithm (natural log) function in C++?

Is there any data on the latency of an AVX2 gather instruction?

Is it "too clever" for using LEA to load constant to register?

Extract fractional part of double efficiently in C

what is the purpose of using index caches in rigtorp's SPSCQueue