similar to: [LLVMdev] Phoronix: Benchmarking LLVM & Clang Against GCC 4.5

On 27 April 2010 08:18, Stefano Delli Ponti <stefano.delliponti at gmail.com> wrote: > FYI > http://www.phoronix.com/scan.php?page=article&item=gcc_llvm_clang&num=1 For Apache and Dhrystone, the performance boost is good (but only the former is really important), but for the rest, especially those with image/sound processing, and HMMR, it's still far behind. Is this only

On Tue, Apr 27, 2010 at 09:37:53AM +0100, Renato Golin wrote: > On 27 April 2010 08:18, Stefano Delli Ponti > <stefano.delliponti at gmail.com> wrote: > > FYI > > http://www.phoronix.com/scan.php?page=article&item=gcc_llvm_clang&num=1 > > For Apache and Dhrystone, the performance boost is good (but only the > former is really important), but for the rest,

On 27.04.2010, at 12:37, Renato Golin wrote: > On 27 April 2010 08:18, Stefano Delli Ponti > <stefano.delliponti at gmail.com> wrote: >> FYI >> http://www.phoronix.com/scan.php?page=article&item=gcc_llvm_clang&num=1 > > For Apache and Dhrystone, the performance boost is good (but only the > former is really important), but for the rest, especially those

Olivier Meurant: > I have run the john the ripper test. > I have used the official archive (same version as phoronix) from > http://www.openwall.com/john/g/john-1.7.3.1.tar.bz2 > > To build with llvm-gcc, replace the line CC = gcc with CC = llvm-gcc. > I have used the following command to build : make clean linux-x86-sse2 > (seems to be the best on x86-32) > The makefile

http://www.phoronix.com/scan.php?page=article&item=apple_llvm_gcc&num=1 Regards, Stefano

On Wed, Sep 16, 2009 at 3:46 PM, Stefano Delli Ponti < stefano.delliponti at gmail.com> wrote: > I don't know what you think about this, but shouldn't it be more > meaningful to make these tests with -O3? I mean, we ought to make the > comparisons with the highest level of optimization available for both of > the compilers. It is difficult to compare an intermediate

screw that site, its useless info run by a linux gnu zealot. 2009/9/14 Chris Lattner <clattner at apple.com>: > On Sep 14, 2009, at 3:20 AM, Stefano Delli Ponti wrote: > >> http://www.phoronix.com/scan.php? >> page=article&item=apple_llvm_gcc&num=1 > > Unfortunately, they don't specify what flags are used, what > architecture is compiled for etc.

On Sep 14, 2009, at 3:20 AM, Stefano Delli Ponti wrote: > http://www.phoronix.com/scan.php? > page=article&item=apple_llvm_gcc&num=1 Unfortunately, they don't specify what flags are used, what architecture is compiled for etc. It's entirely possible that they are accidentally compiling the llvm-gcc binaries for x86-32 and the gcc ones for x86-64 for example. If

Chris Lattner: > Comparing -O3 (and even -O4) is interesting, but we want all > optimization levels to perform better than GCC :). Lots of people use > -O2 and -Os, so comparing against other compiler's -O2 and -Os levels > is just as interesting as comparing -O3 vs -O3. > My thinking was that, for instance, -02 for GCC and -02 for LLVM(-GCC) do not necessarily mean

For interest. It looks like LLVM is the ultimate Dhrystone compiler! :) http://www.phoronix.com/scan.php?page=article&item=gcc_llvm_clang&num=1 It's nice that they compared against llvm 2.7 prerelease. -Chris

On Sep 16, 2009, at 10:05 AM, Stefano Delli Ponti wrote: > Chris Lattner: >> Comparing -O3 (and even -O4) is interesting, but we want all >> optimization levels to perform better than GCC :). Lots of people >> use -O2 and -Os, so comparing against other compiler's -O2 and -Os >> levels is just as interesting as comparing -O3 vs -O3. > > My thinking

On Sep 16, 2009, at 6:46 AM, Stefano Delli Ponti wrote: > Olivier Meurant: >> I have run the john the ripper test. >> I have used the official archive (same version as phoronix) from >> http://www.openwall.com/john/g/john-1.7.3.1.tar.bz2 >> >> To build with llvm-gcc, replace the line CC = gcc with CC = llvm-gcc. >> I have used the following command to build

Since we are in the area, what *should* O1 do? It's basically good for nothing, since it doesn't tune for size or performance. The only good I personally ever have for it is once in a while there is a miscompile at -O1 which narrows the problem. Would it be crazy to make -O1 equivalent to -Os? - Daniel On Wednesday, September 16, 2009, Chris Lattner <clattner at apple.com>

And this one, with LLVM ~3.0: http://www.phoronix.com/scan.php?page=article&item=amd_bulldozer_compilers&num=1 -----Original Message----- From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On Behalf Of Martin Whitaker Sent: Thursday, November 03, 2011 11:01 Cc: LLVM Developers Mailing List Subject: Re: [LLVMdev] The performance of LLVM vs GCC [and copy to

Hi all, This talk includes the performance comparison between LLVM and GCC (page 30/31): LLVM wins a lot for both compilation and execution time. http://llvm.org/pubs/2008-10-04-ACAT-LLVM-Intro.pdf That talk and data were in 2008, I was wondering if there is any updated performance evaluation between the latest LLVM and GCC? Thanks. -- Jianzhou

[and copy to list] Jianzhou Zhao wrote: > Hi all, > > This talk includes the performance comparison between LLVM and GCC > (page 30/31): LLVM wins a lot for both compilation and execution time. > http://llvm.org/pubs/2008-10-04-ACAT-LLVM-Intro.pdf > That talk and data were in 2008, I was wondering if there is any > updated performance evaluation between the latest LLVM and

http://www.phoronix.com/scan.php?page=article&item=llvm_gcc_dragonegg28&num=1 as of version 2.8, LLVM is generating slower code than the newer GCCs but generates the code more quickly.

AMD is dropping support for the R300-R500 cards in their official drivers: http://www.phoronix.com/scan.php?page=article&item=amd_r500_legacy&num=1 As the current open source drivers do not support 3D, I'd like to know which Compiz effects use 3D and which use 2D. Thanks. -- Dotan Cohen http://what-is-what.com http://gibberish.co.il

Hi everyone. I read on a 2011 article - http://www.phoronix.com/scan.php?page=article&item=nouveau_comp_2011&num=19 - that my particular card, GeForce 8400 GS, overheats with nouveau. (So, I never tried using if for long, before, as soon as possible, installing the proprietary drivers...) But, because it's a 2-year-old article, I was wondering if that problem could have been, in the

Hi all, Do you have any recommendation about benchmarking tools on Linux virtual machine for measure the potential performance hit by virtualization, especially on multi-threads computation, since I doubt if the CentOS VM can fully make use of the 32 vCPUs (out of 64 physical cores) that I allocated to it. Regards, Allen 2014-11-05 Allen Qiu