[llvm] [VPlan] Introduce explicit ExtractFromEnd recipes for live-outs. (PR #100658)

[Florian Hahn via llvm-commits]

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@@ -654,6 +656,7 @@ define i32 @print_exit_value(ptr %ptr, i32 %off) {
 ; CHECK-NEXT: Successor(s): middle.block
 ; CHECK-EMPTY:
 ; CHECK-NEXT: middle.block:
+; CHECK-NEXT:   EMIT vp<[[EXIT:%.+]]> = extract-from-end ir<%add>, ir<1>
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fhahn wrote:

It could be pre-computed, but at the moment we use extracts, pre-computation is only done for the IV or its increment directly

https://github.com/llvm/llvm-project/pull/100658