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

[via llvm-commits]

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@@ -10146,7 +10148,9 @@ bool LoopVectorizePass::processLoop(Loop *L) {
         // directly in VPlan.
         EpilogILV.setTripCount(MainILV.getTripCount());
         for (auto &R : make_early_inc_range(*BestEpiPlan.getPreheader())) {
-          auto *ExpandR = cast<VPExpandSCEVRecipe>(&R);
+          auto *ExpandR = dyn_cast<VPExpandSCEVRecipe>(&R);
+          if (!ExpandR)
+            continue;
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ayalz wrote:

Just noting: the (pre)preheader VPIRBB may now have VPIRI's (that need to be skipped here) in addition to VPExpandSCEVRecipe.

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