[Bug target/104474] [12 Regression] ICE: in output_constant_pool_2, at varasm.cc:4062 with -mcpu=neoverse-512tvb -msve-vector-bits=512

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104474

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
            Summary|[12 Regression] ICE: in     |[12 Regression] ICE: in
                   |output_constant_pool_2, at  |output_constant_pool_2, at
                   |varasm.cc:4062 with         |varasm.cc:4062 with
                   |-mcpu=neoverse-512tvb       |-mcpu=neoverse-512tvb
                   |-frounding-math             |-msve-vector-bits=512
                   |-msve-vector-bits=512       |
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2022-02-09

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed, the problem is the backend replaces the non-constant parts with
(const_int 0) rather than zero in the mode.
You can also reproduce the failure with just -mcpu=neoverse-512tvb
-msve-vector-bits=512 and:
typedef float __attribute__((__vector_size__ (64))) F;

F
foo (float t)
{
  return (F){t, 0, 0, 0, 0, 0, 0, 5, 0, t};
}