[Bug tree-optimization/64404] New: [5 Regression] ICE: in vect_get_vec_def_for_operand, at tree-vect-stmts.c:1464 with --param=sccvn-max-alias-queries-per-access=1

["zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64404

            Bug ID: 64404
           Summary: [5 Regression] ICE: in vect_get_vec_def_for_operand,
                    at tree-vect-stmts.c:1464 with
                    --param=sccvn-max-alias-queries-per-access=1
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz

Created attachment 34330
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34330&action=edit
reduced testcase

Compiler output:
$ gcc -O3 --param=sccvn-max-alias-queries-per-access=1 testcase.c
testcase.c: In function 'Compute':
testcase.c:11:1: internal compiler error: in vect_get_vec_def_for_operand, at
tree-vect-stmts.c:1464
 Compute (void)
 ^
0xe62369 vect_get_vec_def_for_operand(tree_node*, gimple_statement_base*,
tree_node**)
        /mnt/svn/gcc-trunk/gcc/tree-vect-stmts.c:1464
0xe700c6 vectorizable_store
        /mnt/svn/gcc-trunk/gcc/tree-vect-stmts.c:5316
0xe75e51 vect_transform_stmt(gimple_statement_base*, gimple_stmt_iterator*,
bool*, _slp_tree*, _slp_instance*)
        /mnt/svn/gcc-trunk/gcc/tree-vect-stmts.c:7257
0xe7b88d vect_transform_loop(_loop_vec_info*)
        /mnt/svn/gcc-trunk/gcc/tree-vect-loop.c:6134
0xe968b6 vectorize_loops()
        /mnt/svn/gcc-trunk/gcc/tree-vectorizer.c:491
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r219053 - ICE
4_9 r219040 - OK