[llvm] [VPlan] Simplify Plan's entry in removeBranchOnConst. (PR #154510)

[Florian Hahn via llvm-commits]

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@@ -10293,11 +10315,15 @@ bool LoopVectorizePass::processLoop(Loop *L) {
     // rarely used is not worth unrolling.
     if (!Checks.hasChecks() && !VF.Width.isScalar())
       DisableRuntimeUnroll = true;
+    LoopRemoved = BestPlan.getScalarPreheader()->getNumPredecessors() == 0;
   }
 
   assert(DT->verify(DominatorTree::VerificationLevel::Fast) &&
          "DT not preserved correctly");
 
+  if (LoopRemoved)
+    return true;
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fhahn wrote:

Done thanks!

https://github.com/llvm/llvm-project/pull/154510