Example where gccgo is 4 times faster than go build

[ejolson (Eric Olson)]

I posted code for an example where gccgo produces an executable that is 4 times faster than the same code compiled with go build using the gc compiler at

Performance Weirdness

I’ve been working on learning Go and wrote a program to compute the Barnsley fern fractal. A large part of this computation involves generating random numbers for the random iterations needed to draw the fern. As a test I coded the simple middle-square Weyl-sequence random number generator in Go to see whether it made my program faster or slower. From the exact same source codes the results were The main Go compiler (version 1.16.3) produced an executable that ran 2.288 times slower. Th…

As there has not been an effective suggestion at a user-level how to fix this, I thought it might be something the developers would be interested in looking at. The reason for this post is to encourage anyone on the development side of Go to look into what’s happening to create such a performance difference between binaries created by the two compilers…