[RFC] Replace some bitmaps with HARD_REG_SETs - second version

[Michael Matz]

Hi,

On Mon, 25 Jul 2011, Dimitrios Apostolou wrote:

> Bug found, in df_mark_reg I need to iterate until regno + n, not n. The error
> is at the following hunk:
> 
> --- gcc/df-scan.c       2011-02-02 20:08:06 +0000
> +++ gcc/df-scan.c       2011-07-24 17:16:46 +0000
> @@ -3713,35 +3717,40 @@ df_mark_reg (rtx reg, void *vset)
>    if (regno < FIRST_PSEUDO_REGISTER)
>      {
>        int n = hard_regno_nregs[regno][GET_MODE (reg)];
> -      bitmap_set_range (set, regno, n);
> +      int i;
> +      for (i=regno; i<n; i++)
> +       SET_HARD_REG_BIT (*set, i);
>      }

No.  n is a count, hence the upper bound is regno + n.


Ciao,
Michael.