[llvm-bugs] [Bug 27008] major vectorizer performance regression from 3.7.1

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=27008

pdknsk <pdknsk at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #1 from pdknsk <pdknsk at gmail.com> ---
This appears to be fixed now, if still somewhat slower, on par with pre-3.7
releases.

clang version 3.9.0-svn264818-1~exp1 (trunk)
Target: x86_64-unknown-linux-gnu

$ clang-3.9 -march=haswell -O2 -std=c99 file.c -o file
$ ./file
1048575999 0.409

$ clang-3.6 -march=haswell -O2 -std=c99 file.c -o file
$ ./file
1048575999 0.410

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