[Bug rtl-optimization/113029] New: sel-sched2 ICE in verify_target_availability

["linkw at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113029

            Bug ID: 113029
           Summary: sel-sched2 ICE in verify_target_availability
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: linkw at gcc dot gnu.org
  Target Milestone: ---

Test case:

#include <altivec.h>
#define c(d, g) g, d
#define e(d, g) g, d
vector double f, n;
int m;
int k;
void j (vector double, double, double);
vector double combine (double, double);
vector double i (double, double);
vector double l (vector double, double);
vector double
o (vector double, double)
{
  vector double a;
  vector double b;
  p ("");
  j (f, c (1, 2));
  j (n, c (3, 4));
  b = i (3, 4);
  j (a, e (1, 2));
  j (b, e (3, 4));
  j (l (a, 5.0), e (5, 2));
  j (o (b, 6.0), e (3, 6));
  k = vec_extract (b, 1);
  j (combine (0, k), c (2, 4));
  m = vec_extract (b, 0);
  j (i (0, m), e (1, 3));
  i (0, vec_extract (b, 1));
}

Option: -std=c89 -O2 -mcpu=power10 -fselective-scheduling2

during RTL pass: sched2
test.c: In function ‘o’:
test.c:29:1: internal compiler error: in verify_target_availability, at
sel-sched.cc:1553
   29 | }
      | ^
0x10c54c43 verify_target_availability
        /home/gccbuild/gcc_trunk_git/gcc/gcc/sel-sched.cc:1553
0x10c54c43 find_best_reg_for_expr
        /home/gccbuild/gcc_trunk_git/gcc/gcc/sel-sched.cc:1667
0x10c54c43 fill_vec_av_set
        /home/gccbuild/gcc_trunk_git/gcc/gcc/sel-sched.cc:3784
0x10c5555b fill_ready_list
        /home/gccbuild/gcc_trunk_git/gcc/gcc/sel-sched.cc:4014
0x10c5555b find_best_expr
        /home/gccbuild/gcc_trunk_git/gcc/gcc/sel-sched.cc:4374
0x10c5555b fill_insns
        /home/gccbuild/gcc_trunk_git/gcc/gcc/sel-sched.cc:5535
0x10c5555b schedule_on_fences
        /home/gccbuild/gcc_trunk_git/gcc/gcc/sel-sched.cc:7353
0x10c5555b sel_sched_region_2
        /home/gccbuild/gcc_trunk_git/gcc/gcc/sel-sched.cc:7491
0x10c57b8b sel_sched_region_1
        /home/gccbuild/gcc_trunk_git/gcc/gcc/sel-sched.cc:7533
0x10c59723 sel_sched_region(int)
        /home/gccbuild/gcc_trunk_git/gcc/gcc/sel-sched.cc:7634
0x10c59723 sel_sched_region(int)
        /home/gccbuild/gcc_trunk_git/gcc/gcc/sel-sched.cc:7619
0x10c59beb run_selective_scheduling()
        /home/gccbuild/gcc_trunk_git/gcc/gcc/sel-sched.cc:7720
0x10c2e6ef rest_of_handle_sched2
        /home/gccbuild/gcc_trunk_git/gcc/gcc/sched-rgn.cc:3748
0x10c2e6ef execute
        /home/gccbuild/gcc_trunk_git/gcc/gcc/sched-rgn.cc:3895