[llvm] [LV] Transform to handle exits in the scalar loop (PR #148626)

[Benjamin Maxwell via llvm-commits]

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@@ -561,6 +561,9 @@ void VPlanTransforms::handleEarlyExits(VPlan &Plan,
         handleUncountableEarlyExit(cast<VPBasicBlock>(Pred), EB, Plan,
                                    cast<VPBasicBlock>(HeaderVPB), LatchVPBB);
         HandledUncountableEarlyExit = true;
+        if (Plan.shouldEarlyExitContinueInScalarLoop())
+          for (VPRecipeBase &R : EB->phis())
+            cast<VPIRPhi>(&R)->removeIncomingValueFor(Pred);
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MacDue wrote:

nit: You could change the `else` branch into `if (!HasUncountableEarlyExit || Plan.shouldEarlyExitContinueInScalarLoop())`.

https://github.com/llvm/llvm-project/pull/148626