[Bug tree-optimization/84353] New: [8 Regression] [graphite] ICE in set_codegen_error, at graphite-isl-ast-to-gimple.c:206

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84353

            Bug ID: 84353
           Summary: [8 Regression] [graphite] ICE in set_codegen_error, at
                    graphite-isl-ast-to-gimple.c:206
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---
            Target: powerpc-*-linux-gnu*, powerpcspe-*-linux-gnu*,
                    i?86-*-*

gcc-8.0.0-alpha20180211 snapshot (r257571) ICEs when compiling the following
snippet w/ -O1 -floop-parallelize-all -fno-tree-loop-im:

long long unsigned int zq;
int aj, kh, j9;

void
he (int qi)
{
  for (;;)
    {
      if (zq != 0 && aj != 0)
        {
          for (kh = 0; kh < 2; ++kh)
            {
            }

          if (zq != (long long unsigned int) qi)
            qi = j9;

          while (aj != 0)
            ++aj;
        }

      while (aj < 1)
        {
        }
    }
}

% powerpc-e300c3-linux-gnu-gcc-8.0.0-alpha20180211 -O1 -floop-parallelize-all
-fno-tree-loop-im -c hwtdekhq.c
during GIMPLE pass: graphite
hwtdekhq.c: In function 'he':
hwtdekhq.c:5:1: internal compiler error: in set_codegen_error, at
graphite-isl-ast-to-gimple.c:206
 he (int qi)
 ^~
0x58c8a2 translate_isl_ast_to_gimple::set_codegen_error()
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:205
0x140f095 translate_isl_ast_to_gimple::set_codegen_error()
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:311
0x140f095
translate_isl_ast_to_gimple::gcc_expression_from_isl_expr_int(tree_node*,
isl_ast_expr*)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:308
0x140f29a translate_isl_ast_to_gimple::binary_op_to_tree(tree_node*,
isl_ast_expr*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:340
0x140f29a translate_isl_ast_to_gimple::binary_op_to_tree(tree_node*,
isl_ast_expr*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:340
0x140fe73 translate_isl_ast_to_gimple::graphite_create_new_guard(edge_def*,
isl_ast_expr*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:873
0x1412af5 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*> > >&)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:892
0x1412a25 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*> > >&)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:859
0x1412f0c graphite_regenerate_ast_isl(scop*)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:1505
0x140d11d graphite_transform_loops()
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite.c:413
0x140e69f graphite_transforms
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite.c:475
0x140e69f execute
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite.c:552