Skip to main content
Peter Cordes's user avatar
Peter Cordes's user avatar
Peter Cordes's user avatar
Peter Cordes
  • Member for 14 years, 7 months
  • Last seen this week
Profile Activity
Stats
351,555
reputation
17.1m
reached
6,484
answers
28
questions
#39 this year
Communities
View all
About

GNU/Linux hacker and command line junkie. He/him.

Primary maintainer of the Stack Overflow tag wiki.

I like efficient code, and knowing how things really work.

I mostly use C/C++ (and perl/bash) on Linux, but I mostly look at assembly-language stuff on SO because it's more interesting to me, and there are fewer people posting good asm answers.

(profile pic is from https://xkcd.com/386/, and describes me perfectly. Incomplete answers/explanations make me crazy.)

Badges
View all badges
49
gold badges
674
silver badges
927
bronze badges
Top tags
View all tags
16,714
Score
3,343
Posts
51
Posts %
13,647
Score
2,080
Posts
32
Posts %
9,485
Score
1,111
Posts
17
Posts %
5,969
Score
1,168
Posts
18
Posts %
5,475
Score
1,080
Posts
17
Posts %
4,856
Score
840
Posts
13
Posts %
Top posts
View all questions, answers, and articles
2123
Why does C++ code for testing the Collatz conjecture run faster than hand-written assembly?
Nov 1, 2016
428
Deoptimizing a program for the pipeline in Intel Sandybridge-family CPUs
May 21, 2016
355
How much of ‘What Every Programmer Should Know About Memory’ is still valid?
Dec 8, 2017
324
What is the best way to set a register to zero in x86 assembly: xor, mov or and?
Nov 12, 2015
322
Does the C++ standard allow for an uninitialized bool to crash a program?
Jan 10, 2019
263
Is incrementing an int effectively atomic in specific cases?
Sep 8, 2016
182
Why does glibc's strlen need to be so complicated to run quickly?
Aug 27, 2019
176
Bubble sort slower with -O3 than -O2 with GCC
Oct 9, 2021
156
Fastest way to do horizontal SSE vector sum (or other reduction)
Feb 8, 2016
149
How to remove "noise" from GCC/clang assembly output?
Jul 24, 2016
Top Meta posts
14
101
77
How are we supposed to post godbolt links now that URL shortening is blocked?
65
The dawn of Documentation: a solstice update
63
Discussion: New AI-generated content policy
62
Are questions that boil down to errors in off-site resources on-topic?
59
Git question with very nonlinear history: Answers cannibalizing each other into redundancy
Top network posts
View all network posts
126
Why does preset "veryfast" in FFmpeg generate the most compressed file compared to all other presets?
99
Why does my browser think that https://1.1.1.1 is secure?
64
Why are leap seconds needed so often?
57
The start of x86: Intel 8080 vs Intel 8086?
56
Did any compiler fully use Intel x87 80-bit floating point?