[llvm] [VPlan] Dispatch to multiple exit blocks via middle blocks. (PR #112138)

[Florian Hahn via llvm-commits]

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@@ -2841,6 +2845,8 @@ void InnerLoopVectorizer::fixupIVUsers(PHINode *OrigPhi,
     }
   }
 
+  assert((MissingVals.empty() || OrigLoop->getUniqueExitBlock()) &&
+         "Expected a single exit block for escaping values");
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fhahn wrote:

Split off to 0e7f18791cfe23860ae590c8c7e1724f9aa0e23b

https://github.com/llvm/llvm-project/pull/112138