[Bug tree-optimization/69184] New: [6 Regression] ICE in copy_cond_phi_nodes, at graphite-isl-ast-to-gimple.c:2685

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69184

            Bug ID: 69184
           Summary: [6 Regression] ICE in copy_cond_phi_nodes, at
                    graphite-isl-ast-to-gimple.c:2685
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ktkachov at gcc dot gnu.org
                CC: spop at gcc dot gnu.org
  Target Milestone: ---
            Target: aarch64

Created attachment 37252
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37252&action=edit
testcase

The attached testcase ICEs on aarch64 when compiled with -w -O3
-floop-interchange:

formatted.c:564:1: internal compiler error: in copy_cond_phi_nodes, at
graphite-isl-ast-to-gimple.c:2685
 main (int argc, char *argv[])
 ^~~~

0x10418e4 translate_isl_ast_to_gimple::copy_cond_phi_nodes(basic_block_def*,
basic_block_def*, vec<tree_node*, va_heap, vl_ptr>)
        $SRC/gcc/graphite-isl-ast-to-gimple.c:2685
0x10422ff
translate_isl_ast_to_gimple::copy_bb_and_scalar_dependences(basic_block_def*,
edge_def*, vec<tree_node*, va_heap, vl_ptr>)
        $SRC/gcc/graphite-isl-ast-to-gimple.c:2963
0x1042bf8
translate_isl_ast_to_gimple::translate_isl_ast_node_user(isl_ast_node*,
edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
        $SRC/gcc/graphite-isl-ast-to-gimple.c:1129
0x1042d78 translate_isl_ast_to_gimple::translate_isl_ast(loop*, isl_ast_node*,
edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
        $SRC/gcc/graphite-isl-ast-to-gimple.c:1236
0x1042e99 translate_isl_ast_to_gimple::translate_isl_ast_for_loop(loop*,
isl_ast_node*, edge_def*, tree_node*, tree_node*, tree_node*, std::map<isl_id*,
tree_node*, std::less<isl_id*>, std::allocator<std::pair<isl_id* const,
tree_node*> > >&)
        $SRC/gcc/graphite-isl-ast-to-gimple.c:879
0x104302a translate_isl_ast_to_gimple::translate_isl_ast_node_for(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
        $SRC/gcc/graphite-isl-ast-to-gimple.c:1039
0x1042d4f translate_isl_ast_to_gimple::translate_isl_ast(loop*, isl_ast_node*,
edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
        $SRC/gcc/graphite-isl-ast-to-gimple.c:1229
0x10434a4 translate_isl_ast_to_gimple::translate_isl_ast_node_if(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
        $SRC/gcc/graphite-isl-ast-to-gimple.c:1199
0x1042d65 translate_isl_ast_to_gimple::translate_isl_ast(loop*, isl_ast_node*,
edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
        $SRC/gcc/graphite-isl-ast-to-gimple.c:1233
0x104329a translate_isl_ast_to_gimple::translate_isl_ast_node_block(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
        $SRC/gcc/graphite-isl-ast-to-gimple.c:1159
0x1042d8e translate_isl_ast_to_gimple::translate_isl_ast(loop*, isl_ast_node*,
edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
        $SRC/gcc/graphite-isl-ast-to-gimple.c:1240
0x1043740 graphite_regenerate_ast_isl(scop*)
        $SRC/gcc/graphite-isl-ast-to-gimple.c:3262
0x103aa95 graphite_transform_loops()
        $SRC/gcc/graphite.c:336
0x103ac2c graphite_transforms
        $SRC/gcc/graphite.c:363
0x103ac2c execute
        $SRC/gcc/graphite.c:440
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