[llvm] [VPlan] Simplify branch on False in VPlan transform (NFC). (PR #140409)

[Florian Hahn via llvm-commits]

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@@ -1185,6 +1185,16 @@ void VPIRPhi::execute(VPTransformState &State) {
   State.Builder.SetInsertPoint(Phi->getParent(), std::next(Phi->getIterator()));
 }
 
+void VPPhiAccessors::removeIncomingValueFor(VPBlockBase *IncomingBlock) const {
+  VPRecipeBase *R = const_cast<VPRecipeBase *>(getAsRecipe());
+  auto &Preds = R->getParent()->getPredecessors();
+  assert(R->getNumOperands() == Preds.size() &&
+         "Number of phi operands must match number of predecessors");
+  unsigned Position = std::distance(Preds.begin(), find(Preds, IncomingBlock));
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fhahn wrote:

Split off to 861502304c9fe79c01e3382c52652e87ac03713e, as there are already existing users for this utility, thanks.

https://github.com/llvm/llvm-project/pull/140409