[llvm-testresults] buildbot failure in llvm on dragonegg-i386-linux

Duncan Sands baldrick at free.fr
Wed Jan 26 12:43:22 PST 2011


Hi Eric,

>>> Non-determinism! The dragonegg selfhost compared object files it built
>>> at different stages, and they weren't the same. I guess this might be
>>> due to echristo's inline cost changes.
>>
>> ... Those were Sunday though. No costs changed yesterday, might be some
>> caching effects though. I'll take a look.
>
> I've reverted for now to see if it fixes it, but a quick question. From looking
> at the output of the script it looks like it is comparing the output of
> stage 0 vs the output of stage 1? Or is that just an artifact of the script?

thanks for reverting your patch.  The stages are not exactly the same as with a
gcc bootstrap.  In stage 0, LLVM and dragonegg are built with gcc, but dragonegg
is then immediately rebuilt with itself, creating the object files that are used
for the comparison.  So these object files are analogous to the object files
produced by stage1 of a gcc bootstrap.

Ciao, Duncan.



More information about the llvm-testresults mailing list