Air should have a phase for hoisting stores to relieve register pressure 
https://bugs.webkit.org/show_bug.cgi?id=151063
Summary Air should have a phase for hoisting stores to relieve register pressure
Filip Pizlo
Reported 2015-11-09 17:00:06 PST
If we see a store, we should be able to hoist up to just after the previous interfering effect - like the previous memory effect or the last instruction to Def a value we Use. I thought of this when doing this manually in CCall lowering.
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