[Bug middle-end/114157] during GIMPLE pass: bitintlower ICE: in lower_stmt, at gimple-lower-bitint.cc:5577 with -O with _BitInt(256) / vector memmove

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114157

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ah, we need to handle BIT_FIELD_REF from some SSA_NAME to large/huge _BitInt:
void foo (vector(8) long int s)
{
  _BitInt(256) _2;

  <bb 2> [local count: 1073741824]:
  _2 = BIT_FIELD_REF <s_1(D), 256, 0>;
  MEM <_BitInt(256)> [(char * {ref-all})&d] = _2;

maybe also BIT_FIELD_REF from large/huge _BitInt to non-bitint and maybe also
from/to large/huge _BitInt.  Though, I really can't reproduce those cases right
now, so it would be purely theoretical.