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

[Graham Hunter via llvm-commits]

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@@ -712,6 +716,17 @@ RecurrenceDescriptor::isFindIVPattern(RecurKind Kind, Loop *TheLoop,
                                      m_Value(NonRdxPhi)))))
     return InstDesc(false, I);
 
+  if (isFindLastRecurrenceKind(Kind)) {
+    // Must be an integer scalar.
+    Type *Type = OrigPhi->getType();
+    if (!Type->isIntegerTy())
+      return InstDesc(false, I);
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huntergr-arm wrote:

`simple_csa_float_select` (in llvm/test/Transforms/LoopVectorize/conditional-scalar-assignment.ll) should test this?

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