[llvm] [SLP] Replace most uses of for_each with range-for loops. NFC (PR #136146)

[Alexey Bataev via llvm-commits]

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@@ -15325,7 +15325,9 @@ BoUpSLP::isGatherShuffledSingleRegisterEntry(
     // tree.
     Entries.push_back(FirstEntries.front());
     // Update mapping between values and corresponding tree entries.
-    for_each(UsedValuesEntry, [&](auto &P) { P.second = 0; });
+    for (auto &P : UsedValuesEntry) {
+      P.second = 0;
+    }
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alexey-bataev wrote:

Drop braces

https://github.com/llvm/llvm-project/pull/136146