[Bug tree-optimization/60276] [4.7/4.8 Regression] -O3 autovectorizer breaks on a particular loop

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60276

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-02-20
      Known to work|                            |4.9.0
   Target Milestone|---                         |4.7.4
            Summary|-O3 autovectorizer breaks   |[4.7/4.8 Regression] -O3
                   |on a particular loop        |autovectorizer breaks on a
                   |                            |particular loop
     Ever confirmed|0                           |1
      Known to fail|                            |4.7.3, 4.8.2

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Works with GCC 4.9, still fails on the 4.8 branch and the 4.7 branch, works
with 4.3 so a regression.

Curious what fixed it on trunk.