[Bug rtl-optimization/55549] zero_extend and vectors

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55549

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
           Keywords|                            |internal-improvement
   Last reconfirmed|                            |2021-08-22
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Still there:
#ifdef INSN_SCHEDULING
          /* If *SPLIT is a paradoxical SUBREG, when we split it, it should
             be written as a ZERO_EXTEND.  */
          if (split_code == SUBREG && MEM_P (SUBREG_REG (*split)))
            {
              /* Or as a SIGN_EXTEND if LOAD_EXTEND_OP says that that's
                 what it really is.  */
              if (load_extend_op (GET_MODE (SUBREG_REG (*split)))
                  == SIGN_EXTEND)
                SUBST (*split, gen_rtx_SIGN_EXTEND (split_mode,
                                                    SUBREG_REG (*split)));
              else
                SUBST (*split, gen_rtx_ZERO_EXTEND (split_mode,
                                                    SUBREG_REG (*split)));
            }
#endif