[Bug tree-optimization/44393] New: [4.5/4.6 Regression] ICE: verify_ssa failed: no immediate_use list with -Os -ftree-loop-distribution

[zsojka at seznam dot cz]

Command line:
$ gcc -ftree-loop-distribution -Os testcase.c

Compiler output:
$ /mnt/svn/gcc-trunk/binary-160165-lto-fortran/bin/gcc -ftree-loop-distribution
-Os testcase.c
testcase.c: In function 'foo':
testcase.c:2:6: error: no immediate_use list
for SSA_NAME: .MEM_11 in statement:
# .MEM_21 = VDEF <.MEM_11>
i = 0;
testcase.c:2:6: internal compiler error: verify_ssa failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r160165 - crash
r159696 - crash
r158969 - crash
r158095 - crash
r153685 - crash
4.5 r158978 - crash
4.4 r158133 - OK


-- 
           Summary: [4.5/4.6 Regression] ICE: verify_ssa failed: no
                    immediate_use list with -Os -ftree-loop-distribution
           Product: gcc
           Version: 4.6.0
            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=44393