[Bug tree-optimization/34034] New: perlbmk hangs with -O2 -fno-tree-dce -fno-tree-dominator-opts

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

Test perlbmk from SPEC CPU2000 hangs on powerpc-linux and i686-linux when
compiled with "-O2 -fno-tree-dce -fno-tree-dominator-opts".  I didn't manage to
get a minimized testcase that fails on both targets, but do have two slightly
different tests.  Both of them hang in the loop that begins "for (t++;", just
as 253.perlbmk does.

A regression hunt on powerpc-linux identified this patch:

    http://gcc.gnu.org/viewcvs?view=rev&rev=127993

    r127993 | nickc | 2007-08-31 14:28:38 +0000 (Fri, 31 Aug 2007)


-- 
           Summary: perlbmk hangs with -O2 -fno-tree-dce -fno-tree-
                    dominator-opts
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: janis at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34034