Linked by Thom Holwerda on Thu 7th Oct 2010 19:10 UTC, submitted by tyrione
General Development LLVM 2.8 has been released. The release notes describe this new, ehm, release in greater detail, so head on over and give it a read.
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RE[2]: GCC > LLVM
by Valhalla on Fri 8th Oct 2010 20:06 UTC in reply to "RE: GCC > LLVM"
Valhalla
Member since:
2006-01-24

and it's getting slower with each new release.

Ehh? Not nearly so, I really want to think this is not about you being a BSD fan and gcc being GPL, please say it's not so.

Error messages/reporting is very poor.

Here's where I kind of agree with you, except that I don't think it's 'very poor' but rather that llvm's is 'very good', as in best of class. It's one of the things I personally would want the gcc devs to work on, but although there are plans on this ( http://gcc.gnu.org/wiki/Better_Diagnostics?action=fullsearch&contex... ) the corporations that to a large extent directs gcc's focus (ibm, red hat, novell etc) are obviously prioritizing optimizations as it stands with the focus of gcc 4.6 being that of polyhedral optimizations. Nothing wrong with that, certainly there's alot of performance to be had, as shown by pocc for example: http://www-roc.inria.fr/~pouchet/software/pocc/ but again I'd rather prefer it if they put the optimizations aside for a whlie and worked on the diagnostics.

Reply Parent Score: 2

RE[3]: GCC > LLVM
by 0brad0 on Fri 8th Oct 2010 23:20 in reply to "RE[2]: GCC > LLVM"
0brad0 Member since:
2007-05-05


Ehh? Not nearly so, I really want to think this is not about you being a BSD fan and gcc being GPL, please say it's not so.


Not at all. Its called doing actual real world benchmarks. Building kernel and userland and finding each release is slower.

Reply Parent Score: 1

RE[4]: GCC > LLVM
by Valhalla on Fri 8th Oct 2010 23:40 in reply to "RE[3]: GCC > LLVM"
Valhalla Member since:
2006-01-24


Not at all. Its called doing actual real world benchmarks. Building kernel and userland and finding each release is slower.

Well, while I'm not rolling my own kernel, I do compile applications like blender and inkscape regularly (atleast on a weekly basis) and my experience is not that of yours. While I haven't noted any major improvements in compilation-speed these past releases I've certainly not noted any regressions either.

Though this could perhaps depend on which optimization flags you use, optimizations are added regularly to -O3 (which could measurably slow down compilation) I certainly haven't noticed it. Since I'm curious I'd like to do some benchmarking on my own in this area, can you offer any statistics with which to compare, and also which gcc versions you are talking about?

Reply Parent Score: 2