[PATCH 1/2] ptid_{lwp,tid}_p: Remove unnecessary checks

[Pedro Alves]

On 04/04/2017 07:32 PM, Simon Marchi wrote:
> The calls to ptid_equal in ptid_lwp_p and ptid_tid_p that compare the
> argument to minus_one_ptid and null_ptid are not necessary.  The calls
> in question are:
> 
>    if (ptid_equal (minus_one_ptid, ptid)
>        || ptid_equal (null_ptid, ptid))
>      return 0;
> 
> minus_one_ptid is { .pid = -1, .lwp = 0, .tid = 0 }
> null_ptid is { .pid = 0, .lwp = 0, .tid = 0 }
> 
> If the ptid argument is either of them, the statements
> 
>   return (ptid_get_lwp (ptid) != 0);
> 
> and
> 
>   return (ptid_get_tid (ptid) != 0);
> 
> will yield the same result (0/false).
> 
> gdb/ChangeLog:
> 
> 	* common/ptid.c (ptid_lwp_p, ptid_tid_p): Remove comparison with
> 	minus_one_ptid and null_ptid.

Indeed.  LGTM.

Thanks,
Pedro Alves