[Bug middle-end/104226] New: ICE in fold_vec_perm, at fold-const.cc:10483

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104226

            Bug ID: 104226
           Summary: ICE in fold_vec_perm, at fold-const.cc:10483
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---
            Target: x86_64-unknown-linux-gnu

g++ 12.0.0 20220123 snapshot (g:2da90ad39bf8fa9ee287e040d1f4411cb7a2e7ed) ICEs
when compiling gcc/testsuite/gcc.target/i386/pr101046.c:

% x86_64-unknown-linux-gnu-g++-12.0.1 -c
gcc/testsuite/gcc.target/i386/pr101046.c
gcc/testsuite/gcc.target/i386/pr101046.c: In function 'U foo()':
gcc/testsuite/gcc.target/i386/pr101046.c:14:74: internal compiler error: in
fold_vec_perm, at fold-const.cc:10483
   14 |                                                            5, 5, 0, 2),
U);
      |                                                                        
 ^
0x798fe8 fold_vec_perm(tree_node*, tree_node*, tree_node*, vec_perm_indices
const&)
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/fold-const.cc:10483
0x18cd579 generic_simplify_VEC_PERM_EXPR
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/build/gcc/generic-match.cc:90825
0xe33f7b fold_ternary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*, tree_node*)
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/fold-const.cc:12777
0x995083 cxx_eval_trinary_expression
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/cp/constexpr.cc:5472
0x985798 cxx_eval_constant_expression
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/cp/constexpr.cc:7119
0x98df9e cxx_eval_internal_function
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/cp/constexpr.cc:1839
0x98238e cxx_eval_call_expression
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/cp/constexpr.cc:2395
0x985647 cxx_eval_constant_expression
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/cp/constexpr.cc:6627
0x988743 cxx_eval_outermost_constant_expr
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/cp/constexpr.cc:7700
0x98d54e maybe_constant_value(tree_node*, tree_node*, bool)
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/cp/constexpr.cc:7994
0xa2548b fold_for_warn(tree_node*)
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/cp/expr.cc:416
0xbc6e08 maybe_warn_about_returning_address_of_local
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/cp/typeck.cc:10067
0xbc6e08 check_return_expr(tree_node*, bool*)
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/cp/typeck.cc:10730
0xb6fbde finish_return_stmt(tree_node*)
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/cp/semantics.cc:1195
0xace69c cp_parser_jump_statement
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/cp/parser.cc:14313
0xace69c cp_parser_statement
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/cp/parser.cc:12318
0xacf34d cp_parser_statement_seq_opt
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/cp/parser.cc:12856
0xacf427 cp_parser_compound_statement
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/cp/parser.cc:12808
0xaeffd5 cp_parser_function_body
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/cp/parser.cc:25052
0xaeffd5 cp_parser_ctor_initializer_opt_and_function_body
       
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220123/work/gcc-12-20220123/gcc/cp/parser.cc:25103