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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/66975] parloops to handle signed int reductions
Date: Sat, 01 Aug 2015 08:36:00 -0000
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X-Bugzilla-Component: tree-optimization
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X-Bugzilla-Keywords: missed-optimization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66975

vries at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-08-01
     Ever confirmed|0                           |1

--- Comment #4 from vries at gcc dot gnu.org ---
https://gcc.gnu.org/ml/gcc-patches/2015-07/msg01817.html :
...
The "proper" solution (see other passes) is to rewrite the reduction
to a wrapping
one (cast to unsigned for the reduction op).
...