[Bug rtl-optimization/115521] ICE at -O1 with "-fno-tree-ccp -fno-tree-dominator-opts" on x86_64-linux-gnu: in extract_constrain_insn, at recog.cc:2713

[ubizjak at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115521

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ra
     Ever confirmed|0                           |1
          Component|target                      |rtl-optimization
   Last reconfirmed|                            |2024-06-17
                 CC|                            |vmakarov at gcc dot gnu.org
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
This is the case of reload failure, trying to satisfy:

(define_insn_and_split "*<code>qi_ext<mode>_1_slp"
  [(set (strict_low_part (match_operand:QI 0 "register_operand" "+Q,&Q"))
        (any_logic:QI
          (subreg:QI
            (match_operator:SWI248 3 "extract_operator"
              [(match_operand 2 "int248_register_operand" "Q,Q")
               (const_int 8)
               (const_int 8)]) 0)
          (match_operand:QI 1 "nonimmediate_operand" "0,!qm")))
   (clobber (reg:CC FLAGS_REG))]

Cc added.