Re: clang's build performance

2014-07-07 Thread Ryan Schmidt
On Jul 7, 2014, at 3:16 AM, René J.V. Bertin wrote: > On Monday July 07 2014 08:43:33 Akim Demaille wrote: > >> Since I'm spending quite some time compiling, I'd like to try >> compiling clang-3.5 itself with -O3. > > IIRC I tried invoking `port` with CC, CXX, CFLAGS etc. set to my own values

Re: clang's build performance

2014-07-07 Thread Ian Wadham
Hi René, On 07/07/2014, at 9:00 PM, René J.V. Bertin wrote: > On Jul 07, 2014, at 12:39, Ian Wadham wrote: > > Now why did I misread and wonder why Apple would have a Real Men column on a > site called Activity Monitor? :))) LOL. Don't know why you misread that, but "to the pure all things are

Re: clang's build performance

2014-07-07 Thread René J.V. Bertin
On Jul 07, 2014, at 12:39, Ian Wadham wrote: Now why did I misread and wonder why Apple would have a Real Men column on a site called Activity Monitor? :))) > FWIW, and this is perhaps completely off-topic, I find that Clang performs No, I think it's perfectly on topic. > well enough almost al

Re: clang's build performance

2014-07-07 Thread Ian Wadham
On 07/07/2014, at 6:16 PM, René J.V. Bertin wrote: > On Monday July 07 2014 08:43:33 Akim Demaille wrote: > I think I agree with your assessment, I've thought the same thing. My > 'anecdata' on Linux do tend to show that clang remains the faster compiler. > Interestingly, gcc has long been incompr

Re: clang's build performance

2014-07-06 Thread Akim Demaille
I have also observed the regression in compilation speed. Which is not really surprising: GCC was slower, but producing better code (at least on my project). Now clang is catching up on the quality of the produced code, but that does require more compilation time. Is there a means to specify con

Re: clang's build performance

2014-07-05 Thread Christopher Jones
Hi, I cannot answer why, but I can confirm what you have seen. Even on OSX10.9, where the system clang is MacBookPro ~ > clang -v Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn) Target: x86_64-apple-darwin13.3.0 Thread model: posix So I would guess closer to MacPorts clang 3.4 th

clang's build performance

2014-07-05 Thread René J.V. Bertin
In hope it's not completely out of place to discuss this here, but has anyone else noticed that clang's supposedly better build performance (as opposed to gcc) is no longer an accurate selling argument, at least for version 3.4? Comparing build times of a port I'm working on, KDE's rekonq so mo