[Bug tree-optimization/42916] New: "-fcompare-debug failure" with "-O1 -funroll-loops -ftree-vectorize"

[zsojka at seznam dot cz]

Command line:
gcc -O1 -funroll-loops -ftree-vectorize -fcompare-debug -m32 -c testcase.c
(-m32 is needed for x86_64)

Tested revisions:
r156367 - crash
r155363 - crash
r153685 - crash

Output:
$ /mnt/svn/gcc-trunk/binary-156367-lto/bin/gcc -O1 -funroll-loops
-ftree-vectorize -fcompare-debug -m32 -c testcase.c
gcc: testcase.c: -fcompare-debug failure (length)


-- 
           Summary: "-fcompare-debug failure" with "-O1 -funroll-loops -
                    ftree-vectorize"
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: zsojka at seznam dot cz
  GCC host triplet: x86(_64)-pc-linux-gnu
GCC target triplet: x86(_64)-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42916