[llvm] [VPlan] Materialize VectorTripCount in narrowInterleaveGroups. (PR #182146)

[David Sherwood via llvm-commits]

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@@ -761,6 +758,121 @@ loop:
 exit:
   ret void
 }
+
+; Test with induction live-out to verify exit value is correctly computed.
+define i64 @test_4xi64_induction_live_out(ptr noalias %data, ptr noalias %factor, i64 noundef %n) {
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david-arm wrote:

Do we also have a test for a live-out where we would also create a vector epilogue? The incoming value for the epilogue middle block also needs to be correct.

https://github.com/llvm/llvm-project/pull/182146