[Bug target/114861] LoongArch: ICE building the kernel with -Os

["xry111 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114861

Xi Ruoyao <xry111 at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|needs-reduction             |ice-on-valid-code

--- Comment #5 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
Reduced test case:

long evcn, attr_collapse_range_vbo, attr_collapse_range_bytes;
unsigned short flags;
int attr_collapse_range_ni_0_0;
int *attr_collapse_range_mi;
unsigned attr_collapse_range_svcn, attr_collapse_range_vcn1;
void ni_insert_nonresident(unsigned, unsigned short, int **);
int mi_pack_runs(int);
int attr_collapse_range(void) {
  _Bool __trans_tmp_1;
  int run = attr_collapse_range_ni_0_0;
  unsigned evcn1, vcn, end;
  short a_flags = flags;
  __trans_tmp_1 = flags & (32768 | 1);
  if (__trans_tmp_1)
    return 2;
  vcn = attr_collapse_range_vbo;
  end = attr_collapse_range_bytes;
  evcn1 = evcn;
  for (;;)
    if (attr_collapse_range_svcn >= end) {
      unsigned eat, next_svcn = mi_pack_runs(42);
      attr_collapse_range_vcn1 = (vcn ? vcn: attr_collapse_range_svcn);
      eat = (0 < end) - attr_collapse_range_vcn1;
      mi_pack_runs(run - eat);
      if (next_svcn + eat)
        ni_insert_nonresident(evcn1 - eat - next_svcn, a_flags,
                              &attr_collapse_range_mi);
    } else
      return 42;
}