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List:       kde-bugs-dist
Subject:    [valgrind] [Bug 330617] ppc false positive conditional jump depends on uninitialised value
From:       Hal Finkel <hfinkel () anl ! gov>
Date:       2014-02-10 22:43:30
Message-ID: bug-330617-17878-W0jrIxarAO () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=330617

--- Comment #7 from Hal Finkel <hfinkel@anl.gov> ---
> Note that we have repeatedly said that Memcheck's definedness tracking
> may be confused by highly optimised code, even if in practice it does
> pretty well.  Official advice is not to use it on code generated at
> -O2 or above.

As far as I can tell, Clang/LLVM perform this transformation at all
optimization levels. (-O1 does the same thing, on both ppc and x86_64).

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