[llvm] [SystemZ] SLP reductions: cost functions of reductions and scalarization (PR #112491)

[Jonas Paulsson via llvm-commits]

================
@@ -3032,10 +3032,9 @@ class BoUpSLP {
       SmallVectorImpl<SmallVector<const TreeEntry *>> &Entries,
       unsigned NumParts, bool ForOrder = false);
 
-  /// \returns the scalarization cost for this list of values. Assuming that
-  /// this subtree gets vectorized, we may need to insert the values from the
-  /// roots. This method calculates the cost of inserting the values.
-  /// \param ForPoisonSrc true if initial vector is poison, false otherwise.
+  /// \returns the cost of gathering (inserting) the values in \p VL into a
+  /// vector.  \param ForPoisonSrc true if initial vector is poison, false
----------------
JonPsson1 wrote:

Fixed.

https://github.com/llvm/llvm-project/pull/112491