[llvm-bugs] [Bug 46890] -basic-aa-recphi=false prevents moving loads out of loop

via llvm-bugs llvm-bugs at lists.llvm.org
Tue Oct 13 04:17:46 PDT 2020


https://bugs.llvm.org/show_bug.cgi?id=46890

Florian Hahn <florian_hahn at apple.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #6 from Florian Hahn <florian_hahn at apple.com> ---
IIRC Dave committed a change to make -basic-aa-recphi=true the default a while
ago.

Things get vectorized without the option now: https://godbolt.org/z/T944xz

It looks like we hit some limit with the laod/store combiner on ARM64, but that
is a separate issue.

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