[Bug tree-optimization/20994] New: [4.1 regression] ICE with -ftree-vectorize

[reichelt at gcc dot gnu dot org]

The following code snippet casues an ICE on mainline when compiled with
"-O -ftree-vectorize". The 4.0 branch is not affected.

===================================
int foo(double* p)
{
    int i=0;

    for (double* q; q!=p; ++q)
        if (*q)
            ++i;

    return i;
}
===================================

This is similar to PR20929. But it is not a duplicate since the bug in
PR 20929 is fixed on mainline.

-- 
           Summary: [4.1 regression] ICE with -ftree-vectorize
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code, monitored
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20994