[llvm] [VPlan] Retain exit conditions and edges in initial VPlan (NFC). (PR #137709)

[via llvm-commits]

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@@ -117,6 +117,7 @@ class VPBlockBase {
     Predecessors.erase(Pos);
   }
 
+public:
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ayalz wrote:

Hopefully this low-level API can remain private, possibly with an addition to the high-level public API, see below.

https://github.com/llvm/llvm-project/pull/137709