Bennie: Dude, I think you're confusing SIMD for "Magic 8 Ball". It's the answer to all your problems. Some people believe in God. You believe in SIMD. Are the ghosts in your machine vectorized?
OK. Messing with Bennie aside, no, I *really* don't want an object to ever transition from RO to RW from the perspective of the runtime. The whole point of keeping track of RO objects was to avoid heavyweight read barriers on such objects. If the object can *ever* go from RO to RW, you can't do that anymore. Or at least you can't do it without running a major collection first. shap
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