[Bug tree-optimization/97467] New: ICE in verify_range, at value-range.cc:369 (-Os and above)

[su at cs dot ucdavis.edu via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97467

            Bug ID: 97467
           Summary: ICE in verify_range, at value-range.cc:369 (-Os and
                    above)
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: su at cs dot ucdavis.edu
  Target Milestone: ---

[594] % gcctk -v
Using built-in specs.
COLLECT_GCC=gcctk
COLLECT_LTO_WRAPPER=/local/suz-local/software/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/11.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --disable-bootstrap
--prefix=/local/suz-local/software/local/gcc-trunk --enable-languages=c,c++
--disable-werror --enable-multilib --with-system-zlib
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 11.0.0 20201017 (experimental) [master revision
56e4eee935c:ba026021eaa:f476a9fe912132abf06c2832a1bb9abe6c1a1bb1] (GCC) 
[595] % 
[595] % gcctk -O1 small.c
[596] % 
[596] % gcctk -Os small.c
during GIMPLE pass: evrp
small.c: In function ‘main’:
small.c:13:1: internal compiler error: in verify_range, at value-range.cc:369
   13 | }
      | ^
0x104b853 irange::verify_range()
        ../../gcc-trunk/gcc/value-range.cc:369
0x104e8b7 irange::irange_set(tree_node*, tree_node*)
        ../../gcc-trunk/gcc/value-range.cc:172
0x104e8b7 irange::set(tree_node*, tree_node*, value_range_kind)
        ../../gcc-trunk/gcc/value-range.cc:226
0x1851ec5 int_range<2u>::int_range(tree_node*,
generic_wide_int<wide_int_storage> const&, generic_wide_int<wide_int_storage>
const&, value_range_kind)
        ../../gcc-trunk/gcc/value-range.h:431
0x1851ec5 operator_lshift::op1_range(irange&, tree_node*, irange const&, irange
const&) const
        ../../gcc-trunk/gcc/range-op.cc:1611
0x18e9398 gori_compute::compute_operand1_range(irange&, gimple*, irange const&,
tree_node*)
        ../../gcc-trunk/gcc/gimple-range-gori.cc:878
0x18eb2d3 gori_compute_cache::compute_operand_range(irange&, gimple*, irange
const&, tree_node*)
        ../../gcc-trunk/gcc/gimple-range-gori.cc:1271
0x18e9457 gori_compute::compute_operand1_range(irange&, gimple*, irange const&,
tree_node*)
        ../../gcc-trunk/gcc/gimple-range-gori.cc:903
0x18eb2d3 gori_compute_cache::compute_operand_range(irange&, gimple*, irange
const&, tree_node*)
        ../../gcc-trunk/gcc/gimple-range-gori.cc:1271
0x18e9d9d gori_compute::outgoing_edge_range_p(irange&, edge_def*, tree_node*)
        ../../gcc-trunk/gcc/gimple-range-gori.cc:1002
0x18e4b00 ranger_cache::iterative_cache_update(tree_node*)
        ../../gcc-trunk/gcc/gimple-range-cache.cc:636
0x18e5783 ranger_cache::fill_block_cache(tree_node*, basic_block_def*,
basic_block_def*)
        ../../gcc-trunk/gcc/gimple-range-cache.cc:873
0x18e5b7e ranger_cache::block_range(irange&, basic_block_def*, tree_node*,
bool)
        ../../gcc-trunk/gcc/gimple-range-cache.cc:589
0x18d8a00 gimple_ranger::range_on_entry(irange&, basic_block_def*, tree_node*)
        ../../gcc-trunk/gcc/gimple-range.cc:909
0x18d9384 gimple_ranger::range_of_expr(irange&, tree_node*, gimple*)
        ../../gcc-trunk/gcc/gimple-range.cc:880
0x18dbb27 gimple_ranger::range_of_range_op(irange&, gimple*)
        ../../gcc-trunk/gcc/gimple-range.cc:418
0x18e0203 gimple_ranger::calc_stmt(irange&, gimple*, tree_node*)
        ../../gcc-trunk/gcc/gimple-range.cc:369
0x18e09a9 gimple_ranger::range_of_stmt(irange&, gimple*, tree_node*)
        ../../gcc-trunk/gcc/gimple-range.cc:986
0x18d9485 gimple_ranger::range_of_expr(irange&, tree_node*, gimple*)
        ../../gcc-trunk/gcc/gimple-range.cc:877
0x104a61e range_query::value_of_expr(tree_node*, gimple*)
        ../../gcc-trunk/gcc/value-query.cc:85
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
[597] % 
[597] % cat small.c
int a;
long b;
unsigned int c = 1;

int main () {
  int e;
  for (; c <= 0; c++) {
    int f = 0;
    b = e;
    a = f || b << c;
  }
  return 0;
}