[Bug other/120494] get_call_fndecl requires REG_CALL_DECL note

[hjl.tools at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120494

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2025-05-30
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Something like this

 rtx call = get_call_rtx_from (insn);
  rtx addr = XEXP (call, 0);
  tree fndecl = nullptr;
  if (MEM_P (addr))
    {    
      addr = XEXP (addr, 0);
      if (GET_CODE (addr) == SYMBOL_REF)
        fndecl = SYMBOL_REF_DECL (addr);
    }    
  return fndecl;