[llvm-bugs] [Bug 27359] [ppc] LLVM built FDO version of libquantum is slower than base version on power8

via llvm-bugs llvm-bugs at lists.llvm.org
Tue May 23 16:02:11 PDT 2017


https://bugs.llvm.org/show_bug.cgi?id=27359

Kit Barton <kbarton at linux.vnet.ibm.com> changed:

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

--- Comment #1 from Kit Barton <kbarton at linux.vnet.ibm.com> ---
I ran this last week 3 times, and the performance was always better when PGO
was enabled. On average it was 18% better when using PGO vs non-PGO.

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