[PATCH, arc]: Drop "register" keyword

[Richard Biener]

On Wed, May 26, 2021 at 3:12 PM Jan-Benedict Glaw <jbglaw@lug-owl.de> wrote:
>
> Hi!
>
> I'd like to commit the following patch.
>
> Okay for master?

OK.

Richard.

> Thanks,
>   Jan-Benedict
>
>
>
>
>     arc: Remove useless register keyword
>
>     The "register" keyword was removed in C++17, remove them to get the backen
>     to build again.
>
>     gcc/
>             * config/arc/arc.c (arc_address_cost, arc_print_operand_address,
>             arc_ccfsm_advance, symbolic_reference_mentioned_p,
>             arc_raw_symbolic_reference_mentioned_p): Remove  register
>             keyword.
>
> diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c
> index ec7328edb5a..9153f0529ab 100644
> --- a/gcc/config/arc/arc.c
> +++ b/gcc/config/arc/arc.c
> @@ -2488,8 +2488,8 @@ arc_address_cost (rtx addr, machine_mode, addr_space_t, bool speed)
>
>      case PLUS :
>        {
> -       register rtx plus0 = XEXP (addr, 0);
> -       register rtx plus1 = XEXP (addr, 1);
> +       rtx plus0 = XEXP (addr, 0);
> +       rtx plus1 = XEXP (addr, 1);
>
>         if (GET_CODE (plus0) != REG
>             && (GET_CODE (plus0) != MULT
> @@ -5032,7 +5032,7 @@ arc_print_operand (FILE *file, rtx x, int code)
>  void
>  arc_print_operand_address (FILE *file , rtx addr)
>  {
> -  register rtx base, index = 0;
> +  rtx base, index = 0;
>
>    switch (GET_CODE (addr))
>      {
> @@ -5157,7 +5157,7 @@ static void
>  arc_ccfsm_advance (rtx_insn *insn, struct arc_ccfsm *state)
>  {
>    /* BODY will hold the body of INSN.  */
> -  register rtx body;
> +  rtx body;
>
>    /* This will be 1 if trying to repeat the trick (ie: do the `else' part of
>       an if/then/else), and things need to be reversed.  */
> @@ -6130,8 +6130,8 @@ arc_legitimate_pic_addr_p (rtx addr)
>  static bool
>  symbolic_reference_mentioned_p (rtx op)
>  {
> -  register const char *fmt;
> -  register int i;
> +  const char *fmt;
> +  int i;
>
>    if (GET_CODE (op) == SYMBOL_REF || GET_CODE (op) == LABEL_REF)
>      return true;
> @@ -6141,7 +6141,7 @@ symbolic_reference_mentioned_p (rtx op)
>      {
>        if (fmt[i] == 'E')
>         {
> -         register int j;
> +         int j;
>
>           for (j = XVECLEN (op, i) - 1; j >= 0; j--)
>             if (symbolic_reference_mentioned_p (XVECEXP (op, i, j)))
> @@ -6163,8 +6163,8 @@ symbolic_reference_mentioned_p (rtx op)
>  bool
>  arc_raw_symbolic_reference_mentioned_p (rtx op, bool skip_local)
>  {
> -  register const char *fmt;
> -  register int i;
> +  const char *fmt;
> +  int i;
>
>    if (GET_CODE(op) == UNSPEC)
>      return false;
> @@ -6184,7 +6184,7 @@ arc_raw_symbolic_reference_mentioned_p (rtx op, bool skip_local)
>      {
>        if (fmt[i] == 'E')
>         {
> -         register int j;
> +         int j;
>
>           for (j = XVECLEN (op, i) - 1; j >= 0; j--)
>             if (arc_raw_symbolic_reference_mentioned_p (XVECEXP (op, i, j),
> --