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New posts in micro-optimization
How to improve performance on a function that operates on two arrays in clojure
Jun 10, 2021
clojure
micro-optimization
mathematical-optimization
Why move 32-bit register to stack then from stack to xmm register?
May 28, 2020
assembly
x86
sse
att
micro-optimization
Weird performance effects from nearby dependent stores in a pointer-chasing loop on IvyBridge. Adding an extra load speeds it up?
Jun 21, 2021
assembly
x86
micro-optimization
microbenchmark
micro-architecture
Ever any performance different between Java >> and >>> right shift operators?
Nov 15, 2022
java
performance
bit-shift
micro-optimization
Why does the compiler not always optimize away local variables?
Sep 22, 2022
c++
gcc
compiler-optimization
micro-optimization
Non-virtual interface? (Need a very performant low level abstraction)
May 08, 2022
c++
architecture
abstraction
idioms
micro-optimization
Is it useful to check if a Java collection is empty before beginning iteration?
Nov 18, 2022
java
collections
garbage-collection
iteration
micro-optimization
C# lambda allocation and collection
Jun 01, 2022
.net
lambda
garbage-collection
clr
micro-optimization
MIPS (curiosity) faster way of clearing a register?
Sep 23, 2022
performance
assembly
mips
cpu-architecture
micro-optimization
Accessing arbitrary 16-bit elements packed in a 128-bit register
Jun 14, 2022
assembly
sse
simd
micro-optimization
intrinsics
What is the most optimal way to use a C# struct as the key of a dictionary?
Sep 13, 2022
c#
.net
optimization
micro-optimization
Numpy performance gap between len(arr) and arr.shape[0]
Nov 14, 2022
python
arrays
performance
numpy
micro-optimization
Do most compilers optimize MATMUL(TRANSPOSE(A),B)?
Mar 30, 2021
fortran
gfortran
intel-fortran
micro-optimization
Is using AVX2 can implement a faster processing of LZCNT on a word array?
Oct 05, 2020
x86
simd
avx
micro-optimization
avx2
Efficient mod 3 in x86 assembly
Jan 22, 2020
assembly
x86-64
micro-optimization
Why is POP slow when using register R12?
Apr 03, 2022
performance
x86
intel
cpu-architecture
micro-optimization
Microoptimization: iterating with local variable vs. class member
Oct 05, 2022
c++
micro-optimization
Why is an empty function call in python around 15% slower for dynamically compiled python code
Aug 16, 2022
python
optimization
dynamic
python-2.7
micro-optimization
Alternative schemes for implementing vptr?
May 26, 2022
c++
compiler-construction
compiler-optimization
micro-optimization
vptr
How to MOVe 3 bytes (24bits) from memory to a register?
Aug 29, 2022
assembly
x86
x86-64
micro-optimization
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