[llvm] [VPlan] Add VPIRInstruction, use for exit block live-outs. (PR #100735)

[Florian Hahn via llvm-commits]

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@@ -8695,17 +8698,18 @@ addUsersInExitBlock(VPlan &Plan,
   }
 
   // Introduce VPUsers modeling the exit values.
-  for (const auto &[ExitPhi, V] : ExitingValuesToFix) {
+  for (const auto &[IR, V] : ExitingValuesToFix) {
     // Pass live-in values used by exit phis directly through to the live-out.
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fhahn wrote:

Sounds good, but we still need to handle incoming IR that may not be simplified. Or would you prefer to run some pre-cleanup passes before vectorizing? At the moment, I think there is no easy way to do this cleanup before creating VPlans and not modifying the original IR, if we are not vectorizing.

https://github.com/llvm/llvm-project/pull/100735