8146629: Make phase->is_IterGVN() accessible from Node::Identity and Node::ValueSummary: Change arguments of Node::Identity() and Node::Value() from PhaseTransform* to PhaseGVN*.Reviewed-by: kvn, roland
8063137: Never-taken branches should be pruned when GWT LambdaForms are sharedReviewed-by: jrose, kvn
8001532: C2 node files refactoringSummary: Split C2 node files into cast, convert, countbits, intrinsic, move, narrowptr and opaquenode classesReviewed-by: kvn, morris