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Peter Cordes

GNU/Linux hacker and command line junkie.

Primary maintainer of the Stackoverflow 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.)

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Top Posts (1,576) All Questions Answers | Votes Newest

1106 Why is this C++ code faster than my hand-written assembly for testing the Collatz conjecture? Nov 1 '16
359 Deoptimizing a program for the pipeline in Intel Sandybridge-family CPUs May 21 '16
152 Can num++ be atomic for 'int num'? Sep 8 '16
120 Why does this delay-loop start to run faster after several iterations with no sleep? Jul 11 '16
65 What is the best way to set a register to zero in x86 assembly: xor, mov or and? Nov 12 '15
36 Why is pow(int, int) so slow? Dec 10 '16
33 Fastest way to sort 10 numbers? (numbers are 32 bit) Aug 24 '15
31 Huge performance difference (26x faster) when compiling for 32 and 64 bits Aug 7 '15
29 Fastest way to do horizontal float vector sum on x86 Feb 8 '16
28 Is it possible to tell the branch predictor how likely it is to follow the branch? Dec 5 '09
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