[Bug tree-optimization/59745] New: [4.9 Regression] internal compiler error: tree check: expected tree that contains 'typed' structure, have '<invalid tree code>' in operand_equal_p, at fold-const.c:2492

["hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59745

            Bug ID: 59745
           Summary: [4.9 Regression] internal compiler error: tree check:
                    expected tree that contains 'typed' structure, have
                    '<invalid tree code>' in operand_equal_p, at
                    fold-const.c:2492
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
                CC: jakub at redhat dot com

On Linux/x86-64, r206384 caused:

gfortran -c -o ccaux.o -O3 -funroll-loops -ffast-math -ffixed-form ccaux.f
ccaux.f: In function 'trmd':
ccaux.f:846:0: internal compiler error: tree check: expected tree that contains
'typed' structure, have '<invalid tree code>' in operand_equal_p, at
fold-const.c:2492
       SUBROUTINE TRMD(VP,TI,NU,NO,ID)
 ^
0xc151a4 tree_contains_struct_check_failed(tree_node const*,
tree_node_structure_enum, char const*, int, char const*)
    ../../src-trunk/gcc/tree.c:9364
0x7b01c4 contains_struct_check
    ../../src-trunk/gcc/tree.h:3031
0x7b01c4 operand_equal_p(tree_node const*, tree_node const*, unsigned int)
    ../../src-trunk/gcc/fold-const.c:2492
0xf16ce6 aff_combination_add_elt(aff_tree*, tree_node*, double_int)
    ../../src-trunk/gcc/tree-affine.c:145
0xf17102 aff_combination_add(aff_tree*, aff_tree*)
    ../../src-trunk/gcc/tree-affine.c:213
0xf186a2 aff_combination_expand(aff_tree*, pointer_map_t**)
    ../../src-trunk/gcc/tree-affine.c:713
0xa89041 aff_combination_dr_offset
    ../../src-trunk/gcc/tree-predcom.c:640
0xa8915f determine_offset
    ../../src-trunk/gcc/tree-predcom.c:681
0xa8dc80 split_data_refs_to_components
    ../../src-trunk/gcc/tree-predcom.c:790
0xa8dc80 tree_predictive_commoning_loop
    ../../src-trunk/gcc/tree-predcom.c:2444
0xa8f3a7 tree_predictive_commoning()
    ../../src-trunk/gcc/tree-predcom.c:2551
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.
specmake[3]: *** [ccaux.o] Error 1
specmake[3]: *** Waiting for unfinished jobs....