[llvm] [SLP]Support revectorization of the previously vectorized scalars (PR #133091)

[Alexey Bataev via llvm-commits]

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@@ -7553,7 +7550,7 @@ void BoUpSLP::buildExternalUses(
           // Some in-tree scalars will remain as scalar in vectorized
           // instructions. If that is the case, the one in FoundLane will
           // be used.
-          if (any_of(UseEntries, [&](TreeEntry *UseEntry) {
+          if (all_of(UseEntries, [&](TreeEntry *UseEntry) {
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alexey-bataev wrote:

Yes, stil lcorrect. It is not related to the schedk itself, just describes common logic, which is not changed. Just before UseEntries could be only one, now there might be multiple UseEntries

https://github.com/llvm/llvm-project/pull/133091