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New posts in micro-optimization
What is the fastest way to find if a number is even or odd?
c
micro-optimization
Why NASM on Linux changes registers in x86_64 assembly
assembly
nasm
x86-64
micro-optimization
shellcode
When, if ever, is loop unrolling still useful?
performance
language-agnostic
optimization
micro-optimization
Is it possible to tell the branch predictor how likely it is to follow the branch?
c
gcc
x86
compiler-optimization
micro-optimization
Is reading the `length` property of an array really that expensive an operation in JavaScript?
javascript
arrays
micro-optimization
what is faster: in_array or isset? [closed]
php
performance
micro-optimization
Cost of exception handlers in Python
python
performance
exception
micro-optimization
What C/C++ compiler can use push pop instructions for creating local variables, instead of just increasing esp once?
c++
assembly
x86
compiler-optimization
micro-optimization
What methods can be used to efficiently extend instruction length on modern x86?
performance
assembly
optimization
x86
micro-optimization
Branch alignment for loops involving micro-coded instructions on Intel SnB-family CPUs
performance
assembly
x86
intel
micro-optimization
What does `rep ret` mean?
assembly
x86
micro-optimization
branch-prediction
Is there a penalty when base+offset is in a different page than the base?
performance
assembly
x86
micro-optimization
Why does breaking the "output dependency" of LZCNT matter?
performance
assembly
x86
cpu-architecture
micro-optimization
Should I use Java's String.format() if performance is important?
java
string
performance
string-formatting
micro-optimization
The advantages of using 32bit registers/instructions in x86-64
gcc
assembly
x86-64
micro-optimization
Divide by 10 using bit shifts?
math
bit
micro-optimization
low-level
integer-division
Is performance reduced when executing loops whose uop count is not a multiple of processor width?
performance
assembly
x86
cpu-architecture
micro-optimization
Floating point division vs floating point multiplication
c++
floating-point
micro-optimization
Which is better option to use for dividing an integer number by 2?
c++
c
optimization
division
micro-optimization
INC instruction vs ADD 1: Does it matter?
performance
assembly
x86
increment
micro-optimization
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