Hello,

Here is a two lines patch, allowing to use debug_dominance_info and
debug_dominance_tree functions outside of gcc/dominance.c. For the
moment, those functions are not declared in any gcc/*.h files (as far as
I know after trying a grep). I have added them as external functions
into gcc/basic-block.h. I feel this is useful to be able to call those
functions from others files, for exemple from plugins.

ChangeLog:

2011-05-23  Pierre Vittet  <piervit@pvittet.com>

	* basic-block.h (debug_dominance_info, debug_dominance_tree):
	  Add declaration.