https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66592
--- Comment #1 from kargl at gcc dot gnu.org ---
This bug appears to be regression and it requires the -O2 and
-ftree-vectorize options.
gfortran -c -O2 -ftree-vectorize z.f
z.f:1:0:
subroutine calsvp(nkr,nkz)
^
internal compiler error: in vect_get_vec_def_for_operand, at
tree-vect-stmts.c:1478
0xd6a2a9 vect_get_vec_def_for_operand(tree_node*, gimple_statement_base*,
tree_node**)
../../gcc6/gcc/tree-vect-stmts.c:1478
0xd72a0d vectorizable_store
../../gcc6/gcc/tree-vect-stmts.c:5330
0xd7d6a6 vect_transform_stmt(gimple_statement_base*, gimple_stmt_iterator*,
bool*, _slp_tree*, _slp_instance*)
../../gcc6/gcc/tree-vect-stmts.c:7496
0xd9a541 vect_schedule_slp_instance
../../gcc6/gcc/tree-vect-slp.c:3481
0xd9ab16 vect_schedule_slp(_loop_vec_info*, _bb_vec_info*)
../../gcc6/gcc/tree-vect-slp.c:3551
0xd82c17 vect_transform_loop(_loop_vec_info*)
../../gcc6/gcc/tree-vect-loop.c:6218
0xda0792 vectorize_loops()
../../gcc6/gcc/tree-vectorizer.c:495
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.
