[llvm-dev] Using PGO and -O3
Victor Leschuk via llvm-dev
llvm-dev at lists.llvm.org
Wed Jan 31 00:16:04 PST 2018
Maybe we should update the documentation to state this directly?
Currently its a little bit confusing.
On 01/29/2018 05:51 AM, Xinliang David Li wrote:
> It means using PGO with -O2 and above (including -O3).
> On Sun, Jan 28, 2018 at 6:48 PM, Victor Leschuk via llvm-dev
> <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote:
> Hello all,
> clang-related PGO documentation recommends using PGO with -O2 (for
> The question is: is there any reason why exactly -O2 is used in
> examples? Are there any factors which can cause problems when
> using PGO
> with -O3?
> Thanks in advance for your advice!
> Best Regards,
> Victor Leschuk | Software Engineer | Access Softek
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>
Victor Leschuk | Software Engineer | Access Softek
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the llvm-dev