[Bug tree-optimization/88459] vectorization failure for a simple sum reduction loop

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88459

ktkachov at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-12-12
                 CC|                            |ktkachov at gcc dot gnu.org
             Blocks|                            |53947
     Ever confirmed|0                           |1
      Known to fail|                            |9.0

--- Comment #1 from ktkachov at gcc dot gnu.org ---
Confirmed on aarch64 and x86_64. Is it because GCC is afraid of signed overflow
or something?


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947
[Bug 53947] [meta-bug] vectorizer missed-optimizations