[clang-tools-extra] [clang] [llvm] [SLP]Improve findReusedOrderedScalars and graph rotation. (PR #77529)

[Simon Pilgrim via cfe-commits]

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@@ -2432,7 +2433,7 @@ class BoUpSLP {
   isGatherShuffledEntry(
       const TreeEntry *TE, ArrayRef<Value *> VL, SmallVectorImpl<int> &Mask,
       SmallVectorImpl<SmallVector<const TreeEntry *>> &Entries,
-      unsigned NumParts);
+      unsigned NumParts, bool ForOrder = false);
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RKSimon wrote:

Add ForOrder to the doxygen description

https://github.com/llvm/llvm-project/pull/77529