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

[via llvm-commits]

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@@ -2601,9 +2607,9 @@ BasicBlock *InnerLoopVectorizer::emitMemRuntimeChecks(BasicBlock *Bypass) {
 void InnerLoopVectorizer::createVectorLoopSkeleton(StringRef Prefix) {
   LoopVectorPreHeader = OrigLoop->getLoopPreheader();
   assert(LoopVectorPreHeader && "Invalid loop structure");
-  assert((OrigLoop->getUniqueExitBlock() ||
+  assert((OrigLoop->getUniqueLatchExitBlock() ||
           Cost->requiresScalarEpilogue(VF.isVector())) &&
-         "multiple exit loop without required epilogue?");
+         "loops not exiting via the latch without required epilogue?");
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ayalz wrote:

Potentially committed separately?

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