[llvm] Support CSA for floating-point & pointer types (PR #182313)

[Graham Hunter via llvm-commits]

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@@ -1111,7 +1111,7 @@ class TargetTransformInfoImplBase {
 
   virtual bool isLegalToVectorizeReduction(const RecurrenceDescriptor &RdxDesc,
                                            ElementCount VF) const {
-    return true;
+    return RdxDesc.getRecurrenceKind() != RecurKind::FFindLast;
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huntergr-arm wrote:

We should be able to handle these reductions for most targets.

https://github.com/llvm/llvm-project/pull/182313