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

[Hans Wennborg]

As I understand it, it will have the build directory in RPATH, but as
long as the release is not built in /home, it should be fine.

 - Hans

On Fri, Jun 7, 2013 at 1:17 PM, Reid Kleckner <rnk at google.com> wrote:
> 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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