[PATCH 2/6] gimple-range-edge

[Jakub Jelinek]

On Fri, Oct 02, 2020 at 12:59:54PM -0400, Andrew MacLeod via Gcc-patches wrote:
> 
> The ranger is needed to map those values to the switch variable, and also
> apply any previous ranges or derived values (ie, if you ask for the range of
> 'y' in case 2, it will return unsigned int [6,6].

> 
> 	* gimple-range-edge.h: New File.
> 	(outgoing_range): Calculate/cache constant outgoing edge ranges.
> 
> 	* gimple-range-edge.cc: New file.
> 	(gimple_outgoing_range_stmt_p): New.  Find control statement.
> 	(outgoing_range::outgoing_range): New.
> 	(outgoing_range::~outgoing_range): New.
> 	(outgoing_range::get_edge_range): New.  Internal switch edge query.
> 	(outgoing_range::calc_switch_ranges): New.  Calculate switch ranges.
> 	(outgoing_range::edge_range_p): New.  Find constant range on edge.

Just a ChangeLog comment (ditto for several other patches).
When you add a new file, just say that and nothing else, i.e.
	* gimple-range-edge.h: New File.
	* gimple-range-edge.cc: New file.
and that's it.  Everything in the new file is new, no need to state it
explicitly.

	Jakub