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

[David Sherwood via llvm-commits]

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@@ -8778,6 +8789,8 @@ static void addCanonicalIVRecipes(VPlan &Plan, Type *IdxTy, bool HasNUW,
 static SetVector<VPIRInstruction *> collectUsersInExitBlock(
     Loop *OrigLoop, VPRecipeBuilder &Builder, VPlan &Plan,
     const MapVector<PHINode *, InductionDescriptor> &Inductions) {
+  if (!Plan.getVectorLoopRegion()->getSingleSuccessor())
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david-arm wrote:

There will only ever be one successor.

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