[llvm] [VPlan] Manage created blocks directly in VPlan. (NFC) (PR #120918)

[Florian Hahn via llvm-commits]

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@@ -474,6 +469,16 @@ void VPIRBasicBlock::execute(VPTransformState *State) {
   connectToPredecessors(State->CFG);
 }
 
+VPIRBasicBlock *VPIRBasicBlock::clone() {
+  auto *NewBlock = getPlan()->createVPIRBasicBlock(IRBB);
+  for (VPRecipeBase &R : make_early_inc_range(*NewBlock))
+    R.eraseFromParent();
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fhahn wrote:

Added a new constructor to create empty VPIRBBs

https://github.com/llvm/llvm-project/pull/120918