4 commits

Author	SHA1	Message	Date
David Given	ee93389c5f	Refactor the cfg and dominance stuff to make it a lot nicer.	2016-10-06 21:34:21 +02:00
David Given	21034c0d65	No, dammit, for register allocation I need to walk the blocks in *dominance* ... order. Since the dominance tree has changed when I fiddled with the graph, I need to recompute it, so factor it out of the SSA pass. Code is uglier than I'd like but at least the RET statement goes last in the generated code now.	2016-10-05 23:52:54 +02:00
David Given	68f98cbad7	Instruction selection now happens on a shadow tree, rather than on the IR tree ... itself. Currently it's semantically the same but the implementation is cleaner.	2016-10-03 20:52:36 +02:00
David Given	c079e97492	Perform SSA conversion of locals. Much, *much* better code now, at least ... inasmuch as it looks better before register allocation. Basic blocks now know their own successors and predecessors (after a certain point in the IR processing).	2016-10-02 17:50:34 +02:00