[Bug tree-optimization/72739] New: [7 Regression] FAIL: gcc.dg/vect/vect-mask-store-move-1.c after r238301

[ysrumyan at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72739

            Bug ID: 72739
           Summary: [7 Regression] FAIL:
                    gcc.dg/vect/vect-mask-store-move-1.c after r238301
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ysrumyan at gmail dot com
  Target Milestone: ---

We noticed that after this revision test is failed:
FAIL: gcc.dg/vect/vect-mask-store-move-1.c scan-tree-dump-times vect "Move stm
t to created bb" 4
FAIL: gcc.dg/vect/vect-mask-store-move-1.c -flto -ffat-lto-objects  scan-tree-
dump-times vect "Move stmt to created bb" 4

The problem is caused by complete deletion of vectorized loop which requires
run-time alias check. Note that GCC 6 does not have such issue.