[llvm] [LV] Simplify epilogue VF selection by comparing against MaxTripCount (PR #186185)

[Hassnaa Hamdi via llvm-commits]

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@@ -18,18 +18,18 @@ target triple = "aarch64-linux-gnu"
 
 ; DEBUG: LV: Checking a loop in 'main_vf_vscale_x_16'
 ; DEBUG: Create Skeleton for epilogue vectorized loop (first pass)
-; DEBUG: Main Loop VF:vscale x 16, Main Loop UF:2, Epilogue Loop VF:8, Epilogue Loop UF:1
+; DEBUG: Main Loop VF:vscale x 16, Main Loop UF:2, Epilogue Loop VF:4, Epilogue Loop UF:1
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hassnaaHamdi wrote:

The current code favour the larger VF for the scalable cases, I updated it to do the same for epilogue case.

https://github.com/llvm/llvm-project/pull/186185