[llvm] [VPlan] Simplify the computation of the block entry mask. (PR #173265)

[Florian Hahn via llvm-commits]

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@@ -46,6 +46,15 @@ class VPDominatorTree : public DominatorTreeBase<VPBlockBase, false> {
   bool properlyDominates(const VPRecipeBase *A, const VPRecipeBase *B);
 };
 
+/// Template specialization of the standard LLVM post-dominator tree utility for
+/// VPBlockBases.
+class VPPostDominatorTree : public PostDomTreeBase<VPBlockBase> {
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fhahn wrote:

I think you can update `llvm/unittests/Transforms/Vectorize/VPPostDomFrontierTest.cpp` to use VPPostDominatorTree as well, right?

https://github.com/llvm/llvm-project/pull/173265