[llvm] [LoopDeletion] RAUW single-entry header phis after breakLoopBackedge. (PR #106046)

[Philip Reames via llvm-commits]

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@@ -759,6 +759,13 @@ void llvm::breakLoopBackedge(Loop *L, DominatorTree &DT, ScalarEvolution &SE,
         DomTreeUpdater DTU(&DT, DomTreeUpdater::UpdateStrategy::Eager);
         Header->removePredecessor(Latch, true);
 
+        for (PHINode &PN : Header->phis()) {
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preames wrote:

Style wise, can this be done in the caller?  This routine has a clearly stated purpose, and I generally dislike routines which a bunch of vaguely related things.  The need to preserve LCSSA below is somewhat of a counter point.  

(Minor, please don't let this be blocking.)

https://github.com/llvm/llvm-project/pull/106046