[Bug tree-optimization/81309] New: [8 regression] gcc.dg/vect/pr79347.c FAILs

["ro at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81309

            Bug ID: 81309
           Summary: [8 regression] gcc.dg/vect/pr79347.c FAILs
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ro at gcc dot gnu.org
                CC: rguenth at gcc dot gnu.org
  Target Milestone: ---

Between 20170630 (r249833) and 20170702 (r249882), the gcc.dg/vect/pr79347.c
test
started to FAIL (seen on i386-pc-solaris2.12, both 32 and 64-bit, according
to gcc-testresults on many targets):

+FAIL: gcc.dg/vect/pr79347.c -flto -ffat-lto-objects  scan-tree-dump-not vect
"I
nvalid sum of "
+FAIL: gcc.dg/vect/pr79347.c scan-tree-dump-not vect "Invalid sum of "

Maybe this is due to

2017-06-30  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (vect_slp_analyze_node_operations): Only
        analyze the first scalar stmt.  Move vector type computation
        for the BB case here from ...
        * tree-vect-stmts.c (vect_analyze_stmt): ... here.  Guard
        live operation processing in the SLP case properly.

  Rainer