[Release-testers] [llvm-dev] 13.0.1-rc2 release update

[Gulfem Savrun Yeniceri via Release-testers]

Hi,

I have changed the raw profile format which resulted in issues in
llvm-profdata merge and fixed in later commits.
Could we please cherry-pick the commits into the release/13.0.0 branch
which are reported in the following tickets:
https://bugs.llvm.org/show_bug.cgi?id=51497
https://bugs.llvm.org/show_bug.cgi?id=51637

Thanks,

Gülfem

On Wed, Aug 25, 2021 at 8:10 AM Bernhard Rosenkraenzer via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hi,
> I've updated OpenMandriva packaging to current 13.x branch to get a
> preview of 13.0-rc2 (I presume it's 13.0.0-rc2, not 13.0.1?).
>
> Overall, aside from the issues mentioned for rc1 (new-ish components like
> MLIR, flang, libc failing to build) mostly looks good. We found one more
> regression in 13.0-rc2 (compared to 12.x - this was also in rc1, just went
> unnoticed) affecting PGO.
>
> Doing something along the lines of
> export LLVM_PROFILE_FILE=xyz-%p.profile.d
> export CFLAGS="-O2 -fprofile-instr-generate"
> export CXXFLAGS="-O2 -fprofile-instr-generate"
> ./configure
> make
> # Run the generated binaries in some expected ways, e.g. "make check"
> llvm-profdata merge --output=xyz.profile xyz-*.profile.d
>
> consistently (obviously with PIDs varying) results in
> warning: xyz-670250.profile.d: malformed instrumentation profile data
> warning: xyz-670257.profile.d: malformed instrumentation profile data
> error: no profile can be merged
>
> The *.profile.d files look ok at a first glance, and "file" recognizes
> them as "LLVM raw profile data, version 7".
>
> Looks like only "llvm-profdata merge" is broken, using
> -fprofile-instr-use=<any of the individual files> seems to be ok.
> Will file a bug report...
>
> ttyl
> bero
>
> On Wednesday, August 25, 2021 08:12 CEST, Tom Stellard via Release-testers
> <release-testers at lists.llvm.org> wrote:
>
> > Hi,
> >
> > There have been some buildbot failures in the release/13.x branch, so
> > I'm going to delay -rc2 until Thursday to investigate.
> >
> > -Tom
> >
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>
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