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NewCodeGenPipeline

v37	v38
44	44	At this point, no (`LocalReg`) variables are live across a call.
45	45	* TODO: avoid `f();g()` turning into `spill x; f(); reload x; spill x; g(); reload x`.
46		* (TODO: delete the "Remove redundant reloads")
47	46
48	47	* '''Rewrite assignments''' (assignments to local regs, that is, not stores).
49	48	* Convert graph to annotated graph whose nodes are `CmmRewriteAssignments.WithRegUsage`. Specifically, `CmmAssign` is decorated with a flag `RegUsage` saying whether it is used once or many times.
50	49	* Sink or inline assignments nearer their use points
	50
	51	* '''Remove redundant and dead assignments and stores''', implemented in `CmmSpillReload`, removes assignments to dead variables and things like ``a = a`` or ``I32[Hp] = I32[Hp]``.
51	52
52	53	* '''Figure out the stack layout''', implemented in `CmmStackLayout`.