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

[Timur Iskhodzhanov]

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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