[Bug tree-optimization/29801] New: [4.3 regression] ICE in set_lattice_value (tree-ssa-ccp.c)

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

compile the attached testcase with -Os on arm-eabi (maybe others).  Generates
the following ICE:

testcase5.i: In function 'ext3_free_blocks':
testcase5.i:22: internal compiler error: in set_lattice_value, at
tree-ssa-ccp.c:421
Please submit a full bug report,
with preprocessed source if appropriate.

Testcase is reduced from a linux kernel module in CSiBE sources.


-- 
           Summary: [4.3 regression] ICE in set_lattice_value (tree-ssa-
                    ccp.c)
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rearnsha at gcc dot gnu dot org
GCC target triplet: arm-none-eabi


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29801