[LLVMdev] [cfe-dev] [3.3 Release] 3.3rc3 Now Available

[Reid Kleckner]

I'm not sure I follow.  Will the final binaries have a bad RPATH or not?  A
1sec startup pause on some (admittedly crazy) systems seems like a big deal
to me.


On Fri, Jun 7, 2013 at 6:51 AM, Bill Wendling <wendling at apple.com> wrote:

> On Jun 6, 2013, at 9:04 AM, Hans Wennborg <hans at chromium.org> wrote:
>
> > It's probably PR12517.
> >
> > Looking at the clang binary, it's got a /home/ dir in RPATH:
> >
> > $ objdump -p clang+llvm-3.3rc3-Ubuntu-12.04.2-x86_64/bin/clang | grep
> RPATH
> >  RPATH
> >
> $ORIGIN/../lib:/home/aadgrand/tmp/LLVM-3.3rc3/rc3/Phase3/Release+Asserts/llvmCore-3.3-rc3.obj/Release+Asserts/bin
> >
> > This will slow things down if the system tries to automount
> /home/aadgrand.
> >
> > Maybe we should merge r182559 to the release branch? Or at least we
> > should take care not to build it in a /home directory.
> >
> We won't be merging any more patches into the branch. We're basically done
> with it now. We just need to create the final binaries.
>
> The regression isn't expected, of course. I hope it's what Hans
> described... :)
>
> -bw
>
>
> > - Hans
> >
> > On Thu, Jun 6, 2013 at 4:19 PM, Timur Iskhodzhanov <timurrrr at google.com>
> wrote:
> >> Hi Bill,
> >>
> >> I was running some benchmarks and was surprised that the startup
> >> performance of your binaries is much worse than the stable binaries
> >> for 3.2
> >>
> >> I've used:
> >>
> http://llvm.org/releases/3.2/clang+llvm-3.2-x86_64-linux-ubuntu-12.04.tar.gz
> >> vs
> >>
> http://llvm.org/pre-releases/3.3/rc3/clang+llvm-3.3rc3-Ubuntu-12.04.2-x86_64.tar.gz
> >>
> >> On a simple hello.c file:
> >> /ssd/bench$ TIMEFORMAT="%E"
> >> /ssd/bench$ for I in `seq 1 5`; do \
> >>  time /ssd/llvm3.2/bin/clang -c hello.c; \
> >>  done
> >> 0.015
> >> 0.014
> >> 0.013
> >> 0.013
> >> 0.013
> >>
> >> /ssd/bench$ for I in `seq 1 5`; do \
> >>  time /ssd/llvm3.3rc/bin/clang -c hello.c; \
> >>  done
> >> 0.992
> >> 0.978
> >> 0.982
> >> 0.981
> >> 0.976
> >>
> >> Is this an expected behaviour (e.g. +Asserts or Debug build)
> >> or a real regression?
> >>
> >> P.s.
> >> I'm not very familiar with the Clang release process, so I might be
> >> missing something obvious...
> >>
> >> --
> >> Thanks,
> >> Timur Iskhodzhanov
> >>
> >> 2013/6/5 Bill Wendling <wendling at apple.com>:
> >>> Hi LLVM-ites!
> >>>
> >>> We are doing a quick test of 3.3rc3. Our testers did a quick turn
> around and created binaries which you can test. Please give them a go and
> let us know how they work for you. They are here:
> >>>
> >>>        http://llvm.org/pre-releases/3.3/rc3
> >>>
> >>> We don't have a lot of time remaining in the release cycle, so please
> do whatever you can to make sure they are solid. In particular, make sure
> that they solve the PRs that were reported during the release (
> http://llvm.org/bugs/show_bug.cgi?id=15999).
> >>>
> >>> Share and enjoy!
> >>> -bw
>
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