Hi, I think I can at least answer why the Rust project prefers to use mingw-w64-win32threads: 1. It does not inject dependency on libwinpthread.dll, which is nice. 2. Those who tried building LLVM with mingw-w64-pthreads, had reported significant slowdown of the resulting Rust compiler (as compared to one linked to LLVM compiled with the win32threads flavor). Profiling seemed to point towards libpthreads' implementation of mutex. I had checked the source, and indeed, it looked not very efficient ( http://sourceforge.net/p/mingw-w64/bugs/344). It would be nice to get a second opinion, though, maybe I missed something.
Vadim On Wed, Sep 24, 2014 at 10:55 AM, Chandler Carruth <chandl...@google.com> wrote: > > On Wed, Sep 24, 2014 at 10:37 AM, Óscar Fuentes <o...@wanadoo.es> wrote: > >> The best thing for understanding their reasons is to ask them to speak >> up. >> > > I asked them directly, and this thread is a chance for them to speak up > again. I *think* I've addressed the concerns of those I've spoken to > directly, but there may be other folks or other concerns or I may have > messed it up. =] > > >> My experience on the MinGW/MinGW-w64 communities is that those who >> choose MinGW is because of ignorance about MinGW-w64 and because there >> are lots of documents on the 'net that references MinGW. MinGW is, to >> all practical effects, a zombie project and there is no reason to prefer >> it over MinGW-w64 nowadays. >> > > :: shrug :: > > I'm not such a user, and so I don't want to speculate as to what motivates > them. > > _______________________________________________ > LLVM Developers mailing list > llvm...@cs.uiuc.edu http://llvm.cs.uiuc.edu > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev > >
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