We should do constant folding on ValueOp even when it is UntypedUse 
https://bugs.webkit.org/show_bug.cgi?id=193795
Summary We should do constant folding on ValueOp even when it is UntypedUse
Caio Lima
Reported 2019-01-24 16:06:46 PST
Right now, we don't do constant fold on ValueOp nodes, but there is no reason why we shouldn't do this, since profiling and prediction propagation can miss some opportunities.
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Saam Barati
Comment 1 2019-01-24 16:27:26 PST
Yeah, the only thing we need to make sure of is that we don't fold away things that would've failed type checks. For UntypedUse that's obviously nothing. But for BigInt, we must make sure the inputs are BigInt.
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