2026-01-28-shared-basic-block-library.md

category	breaking

• The BasicBlock class is now defined using the shared basic blocks library. BasicBlock.getRoot has been replaced by BasicBlock.getScope. BasicBlock.getAPrededecessor and BasicBlock.getASuccessor now take a SuccessorType argument. ReachableJoinBlock.inDominanceFrontierOf has been removed, so use BasicBlock.inDominanceFrontier instead, swapping the receiver and the argument.