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

[David Sherwood via llvm-commits]

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@@ -1696,3 +1702,79 @@ void VPlanTransforms::createInterleaveGroups(
       }
   }
 }
+
+void VPlanTransforms::convertToMultiCond(VPlan &Plan, ScalarEvolution &SE,
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david-arm wrote:

It's not immediately obvious from the name what this means and is used for. I wonder if it's better named as something like `handleUncountableEarlyExit` to reflect what it will actually be used for? Or perhaps `handleMultipleRegionSuccessors`?

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