On Thursday, 20 July 2017 at 07:19:03 UTC, Patrick Schluter wrote:
version 2.067 that still had the C++ frontend took more than
100 seconds. I think if the backend is translated to D,
building the compiler will take not more than 2 seconds.
To put it in perspective, building gcc with only C and C++
support takes around 15 minutes on my machine and clang+llvm is
ridiculously slow to compile with not far from 1 hour
Ok, these projects are much, much bigger but that doesn't
change the fact that C++ is slow to compile.
One day, a colleague and I were working on migrating a large MSVC
project to LLVM. Due to various reasons (using git master /
bisecting regressions), this involved building LLVM from source
code, which took an exorbitant amount of time (about 40 minutes
Later that day, I mentioned in passing that we might make
building D part of the build process (of a project using D code),
since building the compiler took only 3 seconds on my machine.
To quote my colleague:
"Whaaaaaaaaaaat? How can a compiler compile in 3 seconds?!"