[llvm] [LV] Vectorize conditional scalar assignments (PR #158088)

[Mel Chen via llvm-commits]

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@@ -70,6 +70,9 @@ enum class RecurKind {
   FindLastIVUMax, ///< FindLast reduction with select(cmp(),x,y) where one of
                   ///< (x,y) is increasing loop induction, and both x and y
                   ///< are integer type, producing a UMax reduction.
+  FindLast,       ///< FindLast reduction with select(cmp(),x,y) where x and y
+                  ///< can be any scalar type, one is the current recurrence
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Mel-Chen wrote:

Since isIntegerRecurrenceKind returns true for FindLast, I suggest 
```suggestion
                  ///< are integer type, one is the current recurrence
```

https://github.com/llvm/llvm-project/pull/158088