[llvm] [VPlan] Use DomTreeUpdater to automatically update DT for vector loop. (PR #92525)

[via llvm-commits]

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@@ -2946,7 +2947,8 @@ class VPBasicBlock : public VPBlockBase {
 private:
   /// Create an IR BasicBlock to hold the output instructions generated by this
   /// VPBasicBlock, and return it. Update the CFGState accordingly.
-  BasicBlock *createEmptyBasicBlock(VPTransformState::CFGState &CFG);
+  BasicBlock *createEmptyBasicBlock(VPTransformState::CFGState &CFG,
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ayalz wrote:

nit: if DTU is part of CFGState, then "Update the CFGState accordingly" would also imply updating DT, which this method now does.

https://github.com/llvm/llvm-project/pull/92525