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

[Gaëtan Bossu 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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gbossu wrote:

Checking: After changing `any_of` to `all_of`, is the comment higher up still up to date?

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