[Bug target/109636] [14 Regression] ICE: in paradoxical_subreg_p, at rtl.h:3205 with -O -mcpu=a64fx

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109636

ktkachov at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2023-04-27
             Status|UNCONFIRMED                 |NEW
                 CC|                            |rsandifo at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #4 from ktkachov at gcc dot gnu.org ---
Confirmed. The operand that's blowing it up is:
(subreg:V2DI (reg/v:OI 97 [ w ]) 16)
at
rtx sve_op1 = simplify_gen_subreg (sve_mode, operands[1], <MODE>mode, 0);

simplify_gen_subreg, lowpart_subreg, copy_to_mode_reg and force_reg all ICE :(