Context Navigation

StackAreas

v14	v15
55	55	}}}
56	56
57		Note that the semantics of the now-unnecessary !CopyIn and !CopyOut are reified by an assignment to the stack pointer and by a series of copy instructions. If an optimization understands copy instructions, it can improve this code -- without having to worry about the semantics of !CopyIn.
	57	Note that the semantics of the now-unnecessary !CopyIn and !CopyOut are reified by an assignment to the stack pointer and a series of copy instructions. If an optimization understands copy instructions, it can improve this code -- without having to worry about the semantics of !CopyIn.
58	58
59	59	Furthermore, the job of laying out the stack is now pleasantly simple: decide where to place the slots and parameter-passing areas, then rewrite the references to stack locations. The stack-layout phase is no longer responsible for inserting stack adjustments or lowering !CopyIn and !CopyOut nodes to data-movement instructions.