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2019 Mar 07
2
IR liveness analysis in 2019
Hi Quentin, Well what I'm trying to do is that, given a (maybe really big) set of particular points Pi, find out all the SSA variables Vi that are live at these points (i.e. def(Vi) dom Pi and at least one use(Vi) is reachable from Pi). The problem with classic def-use chains and dominance property is that I have to do this query for each point Pi and each variable Vi, which does not scale