[Bug tree-optimization/113895] [14 Regression] ice in in copy_reference_ops_from_ref, at tree-ssa-sccvn.cc:1144

[zhendong.su at inf dot ethz.ch via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113895

Zhendong Su <zhendong.su at inf dot ethz.ch> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |zhendong.su at inf dot ethz.ch

--- Comment #2 from Zhendong Su <zhendong.su at inf dot ethz.ch> ---
Another related test:

[534] % gcctk -v
Using built-in specs.
COLLECT_GCC=gcctk
COLLECT_LTO_WRAPPER=/local/home/suz/suz-local/software/local/gcc-trunk/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --disable-bootstrap
--enable-checking=yes --prefix=/local/suz-local/software/local/gcc-trunk
--enable-sanitizers --enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 14.0.1 20240213 (experimental) (GCC) 
[535] % 
[535] % gcctk -O1 small.c
during GIMPLE pass: cunroll
small.c: In function ‘main’:
small.c:3:5: internal compiler error: in copy_reference_ops_from_ref, at
tree-ssa-sccvn.cc:1156
    3 | int main() {
      |     ^~~~
0x86357f copy_reference_ops_from_ref
        ../../gcc-trunk/gcc/tree-ssa-sccvn.cc:1156
0x1298c4a valueize_shared_reference_ops_from_ref
        ../../gcc-trunk/gcc/tree-ssa-sccvn.cc:1837
0x1298c4a valueize_shared_reference_ops_from_ref
        ../../gcc-trunk/gcc/tree-ssa-sccvn.cc:1832
0x1298c4a vn_reference_lookup(tree_node*, tree_node*, vn_lookup_kind,
vn_reference_s**, bool, tree_node**, tree_node*, bool)
        ../../gcc-trunk/gcc/tree-ssa-sccvn.cc:4042
0x129d574 visit_reference_op_load
        ../../gcc-trunk/gcc/tree-ssa-sccvn.cc:5831
0x129d574 visit_stmt
        ../../gcc-trunk/gcc/tree-ssa-sccvn.cc:6352
0x129dc1f process_bb
        ../../gcc-trunk/gcc/tree-ssa-sccvn.cc:8124
0x129f4de do_rpo_vn_1
        ../../gcc-trunk/gcc/tree-ssa-sccvn.cc:8725
0x12a0e53 do_rpo_vn(function*, edge_def*, bitmap_head*, bool, bool, bool,
vn_lookup_kind)
        ../../gcc-trunk/gcc/tree-ssa-sccvn.cc:8829
0x11f6529 tree_unroll_loops_completely
        ../../gcc-trunk/gcc/tree-ssa-loop-ivcanon.cc:1554
0x11f6663 execute
        ../../gcc-trunk/gcc/tree-ssa-loop-ivcanon.cc:1673
0x11f6663 execute
        ../../gcc-trunk/gcc/tree-ssa-loop-ivcanon.cc:1663
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
[536] % 
[536] % cat small.c
extern void d(int);
int a[2][4], b;
int main() {
  while (b) {
    int c;
    d(a[b][c]);
    for (c = 0; c < 7; c++)
      ;
  }
  return 0;
}