[llvm-bugs] [Bug 43206] Loop idiom recognizer miscompiles a memcmp loop

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=43206

Roman Lebedev <lebedev.ri at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Fixed By Commit(s)|r370788                     |r370788, r374662
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #6 from Roman Lebedev <lebedev.ri at gmail.com> ---
The problem was that i forgot to ensure that both loads had the same loop base
as the one we were analysing.
Recommitted in r374662.

(In reply to Roman Lebedev from comment #5)
> (In reply to Nick Desaulniers from comment #4)
> > Seems like the commit that was reverted was breaking ppc linux kernel
> > builds: https://github.com/ClangBuiltLinux/linux/issues/647.
> 
> It may be best to retroactively fix that instead of waiting until after it
> breaks next time.

No reaction from Nick in a month, so i guess they weren't interested in
proactive fix. Now that it is recommitted, i guess they are broken again.

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