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

[via llvm-commits]

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@@ -182,11 +182,6 @@ void PlainCFGBuilder::createVPInstructionsForVPBB(VPBasicBlock *VPBB,
            "Instruction shouldn't have been visited.");
 
     if (auto *Br = dyn_cast<BranchInst>(Inst)) {
-      if (TheLoop->getLoopLatch() == BB ||
-          any_of(successors(BB),
-                 [this](BasicBlock *Succ) { return !TheLoop->contains(Succ); }))
-        continue;
-
       // Conditional branch instruction are represented using BranchOnCond
       // recipes.
       if (Br->isConditional()) {
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ayalz wrote:

nit: seems a bit clearer to early continue?
```suggestion
      if (!Br->isConditional())
        continue;
```

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