[llvm] [GenericDomTree] Use range-based for loops (NFC) (PR #96404)

[Kazu Hirata via llvm-commits]

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@@ -882,9 +879,9 @@ class DominatorTreeBase {
     // changed.
     if (!NewBBIDom) return;
 
-    for (i = i + 1; i < PredBlocks.size(); ++i) {
-      if (isReachableFromEntry(PredBlocks[i]))
-        NewBBIDom = findNearestCommonDominator(NewBBIDom, PredBlocks[i]);
+    for (const auto &Pred : llvm::drop_begin(PredBlocks)) {
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kazutakahirata wrote:

Thank you for pointing this out!  I've revised the patch.  Please take a look.

https://github.com/llvm/llvm-project/pull/96404