[Bug middle-end/69920] [6 Regression] FAIL: g++.dg/torture/pr42704.C -O2 -flto -fno-use-linker-plugin -flto-partition=none (internal compiler error)

["vogt at linux dot vnet.ibm.com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69920

--- Comment #12 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
The Ice in 42704.c is gone on s390[x] with trunk (but not the other FAILs).  Is
the Ice below related to this bug report or is it something totally different?

.../gcc/testsuite/gcc.dg/graphite/id-pr45230-1.c: In function 'main':^M 
.../gcc/testsuite/gcc.dg/graphite/id-pr45230-1.c:45:1: internal compiler error:
Segmentation fault^M 
0x8061ac19 crash_signal^M 
        ../../gcc/toplev.c:335^M 
0x80a6305e translate_isl_ast_to_gimple::collect_all_ssa_names(tree_node*,
vec<tree_node*, va_heap, vl_ptr>*)^M 
        ../../gcc/graphite-isl-ast-to-gimple.c:1408^M 
0x80a630a9 translate_isl_ast_to_gimple::collect_all_ssa_names(tree_node*,
vec<tree_node*, va_heap, vl_ptr>*)^M 
        ../../gcc/graphite-isl-ast-to-gimple.c:1418^M 
0x80a630a9 translate_isl_ast_to_gimple::collect_all_ssa_names(tree_node*,
vec<tree_node*, va_heap, vl_ptr>*)^M 
        ../../gcc/graphite-isl-ast-to-gimple.c:1418^M 
0x80a630a9 translate_isl_ast_to_gimple::collect_all_ssa_names(tree_node*,
vec<tree_node*, va_heap, vl_ptr>*)^M 
        ../../gcc/graphite-isl-ast-to-gimple.c:1418^M 
0x80a647e3 translate_isl_ast_to_gimple::rename_all_uses(tree_node*,
basic_block_def*, basic_block_def*)^M 
        ../../gcc/graphite-isl-ast-to-gimple.c:1569^M 
0x80a64989 translate_isl_ast_to_gimple::get_rename_from_scev(tree_node*,
gimple**, loop*, basic_block_def*, basic_block_def*, vec<tree_node\
*, va_heap, vl_ptr>)^M 
        ../../gcc/graphite-isl-ast-to-gimple.c:1623^M 
0x80a66af9 translate_isl_ast_to_gimple::rename_uses(gimple*,
gimple_stmt_iterator*, basic_block_def*, loop*, vec<tree_node*, va_heap, vl_pt\
r>)^M 
        ../../gcc/graphite-isl-ast-to-gimple.c:1730^M 
0x80a683c5
translate_isl_ast_to_gimple::graphite_copy_stmts_from_block(basic_block_def*,
basic_block_def*, vec<tree_node*, va_heap, vl_ptr>\
)^M 
        ../../gcc/graphite-isl-ast-to-gimple.c:2596^M 
0x80a68943
translate_isl_ast_to_gimple::copy_bb_and_scalar_dependences(basic_block_def*,
edge_def*, vec<tree_node*, va_heap, vl_ptr>)^M 
        ../../gcc/graphite-isl-ast-to-gimple.c:2809^M 
0x80a68f4d
translate_isl_ast_to_gimple::translate_isl_ast_node_user(isl_ast_node*,
edge_def*, std::map<isl_id*, tree_node*, std::less<isl_i\
d*>, std::allocator<std::pair<isl_id* const, tree_node*> > >&)^M 
        ../../gcc/graphite-isl-ast-to-gimple.c:935^M 
0x80a692ed 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*> > >&)^M 
        ../../gcc/graphite-isl-ast-to-gimple.c:685^M 
0x80a6956f 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*> > >&)^M 
        ../../gcc/graphite-isl-ast-to-gimple.c:854^M 
0x80a69209 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*> > >&)^M 
        ../../gcc/graphite-isl-ast-to-gimple.c:1032^M 
0x80a696b1 translate_isl_ast_to_gimple::translate_isl_ast_node_block(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::le\
ss<isl_id*>, std::allocator<std::pair<isl_id* const, tree_node*> > >&)^M 
        ../../gcc/graphite-isl-ast-to-gimple.c:964^M 
0x80a691c1 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*> > >