[llvm] [SLP] Support ordered FAdd reductions in SLPVectorizer (PR #146570)

[via llvm-commits]

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@@ -21787,6 +21799,14 @@ class HorizontalReduction {
            (match(I, m_LogicalAnd()) || match(I, m_LogicalOr()));
   }
 
+  bool isOrderedFaddReduction() const {
+    if (!isa<Instruction>(ReductionRoot))
+      return false;
+    auto *I = cast<Instruction>(ReductionRoot);
+    return (RdxKind == RecurKind::FAdd) &&
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sc-clulzze wrote:

Addressed

https://github.com/llvm/llvm-project/pull/146570