https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118062

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2024-12-17
             Status|UNCONFIRMED                 |ASSIGNED
           Assignee|clyon at gcc dot gnu.org           |rguenth at gcc dot 
gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Huh,

  int delta = tree_to_uhwi (part_width) / vector_element_bits (type);
...
  for (i = 0; i < nunits;
       i += delta, index = int_const_binop (PLUS_EXPR, index, part_width))
    {

This looks like designed to support lowering to vectors of smaller size,
but delta should have used vector_element_bits (inner_type), not the
number of bits in the bool result vector type.

Testing a patch.

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