Ping Re: [doc, PATCH] Update the description about ENTRY_BLOCK_PTR and EXIT_BLOCK_PTR

[Mingjie Xing]

2011/2/25 Mingjie Xing <mingjie.xing@gmail.com>:
> Hi,
>
> This patch updates the description about ENTRY_BLOCK_PTR and
> EXIT_BLOCK_PTR, since their index numbers are no longer negative now.
>
> Is it OK?
>
> Thanks,
> Mingjie
>
> ChangeLog,
> 2011-02-25  Mingjie Xing  <mingjie.xing@gmail.com>
>
>        * doc/cfg.texi (ENTRY_BLOCK_PTR, EXIT_BLOCK_PTR): Update the
>        description about their index numbers.
>
>
> Index: doc/cfg.texi
> ===================================================================
> --- doc/cfg.texi        (revision 170165)
> +++ doc/cfg.texi        (working copy)
> @@ -67,8 +67,8 @@ blocks.  The index for any block should
>  Special basic blocks represent possible entry and exit points of a
>  function.  These blocks are called @code{ENTRY_BLOCK_PTR} and
>  @code{EXIT_BLOCK_PTR}.  These blocks do not contain any code, and are
> -not elements of the @code{BASIC_BLOCK} array.  Therefore they have
> -been assigned unique, negative index numbers.
> +always in the CFG.  They are assigned unique index numbers 0 and 1
> +respectively.  Therefore @code{NUM_FIXED_BLOCKS} are 2.
>
>  Each @code{basic_block} also contains pointers to the first
>  instruction (the @dfn{head}) and the last instruction (the @dfn{tail})
>

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