[Bug tree-optimization/51799] New: Compiler ICE in vect_is_simple_use_1

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51799

             Bug #: 51799
           Summary: Compiler ICE in vect_is_simple_use_1
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: mgretton@sourceware.org
            Target: arm-*-*


Created attachment 26281
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26281
Failing test case.

The attached test case causes the compiler to ICE as follows:

$ arm-none-eabi-gcc  -O1 -ftree-vectorize -mcpu=cortex-a9 \
      -mfpu=neon -mfloat-abi=softfp ice.c 
ice.c: In function 'f0a':
ice.c:7:1: internal compiler error: in vect_is_simple_use_1, at
tree-vect-stmts.c:5987
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Checked against trunk revision 183018.