PR gcov/profile/28480 (fix to my speedup in split_block)

[Roger Sayle]

Hi Jan,

On Fri, 28 Jul 2006, Jan Hubicka wrote:
> 2006-07-28  Jan Hubicka  <jh@suse.cz>
>
> 	PR gcov/profile/28480
> 	* tree-cfg.c (change_bb_for_stmt): New function.
> 	(tree_merge_blocks, tree_split_blocks): Use it.

Presumably bootstrap and regression tresting have now finished without
problems?  If so, this patch is Ok for mainline.  This is just one
reason why its better to post patches *after* they've been tested.

Roger
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