[llvm] [LoopVectorize] Improve Vectorization of Low Trip Count Loops (PR #195823)

[Sander de Smalen via llvm-commits]

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@@ -3068,6 +3068,28 @@ LoopVectorizationCostModel::computeMaxVF(ElementCount UserVF, unsigned UserIC) {
       }
     }
 
+    // Allow cases where the ExactTC == (VF * IC) + 1.
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sdesmalen-arm wrote:

nit:
```suggestion
    // Allow cases where the ExactTC == (VF * IC) or ExactTC == (VF * IC) + 1.
```

https://github.com/llvm/llvm-project/pull/195823