[llvm] [VPlan] Compute blend masks from minimum set of edge masks (PR #201783)

[Florian Hahn via llvm-commits]

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@@ -18,6 +18,8 @@
 #include "VPlan.h"
 #include "VPlanCFG.h"
 #include "llvm/ADT/GraphTraits.h"
+#include "llvm/Analysis/DominanceFrontier.h"
+#include "llvm/Analysis/DominanceFrontierImpl.h"
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fhahn wrote:

Can we avoid pulling he implementation in here (which is then pulled in into every place that includes VPDominatorTree.h), and instead move the `VPPostDominanceFrontier` ctor definition to a .cpp file?

https://github.com/llvm/llvm-project/pull/201783