NFC: Add a comment indicating UpdateAnalysisInformation invalidates DFS Numbering (#91252)

hiraditya · web-flow · commit 42d99013bd6b · 2024-05-08T11:03:46.000-07:00
diff --git a/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp b/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp
@@ -1141,6 +1141,7 @@ BasicBlock *llvm::splitBlockBefore(BasicBlock *Old, BasicBlock::iterator SplitPt
 }
 
 /// Update DominatorTree, LoopInfo, and LCCSA analysis information.
+/// Invalidates DFS Numbering when DTU or DT is provided.
 static void UpdateAnalysisInformation(BasicBlock *OldBB, BasicBlock *NewBB,
                                       ArrayRef<BasicBlock *> Preds,
                                       DomTreeUpdater *DTU, DominatorTree *DT,

Original file line number	Diff line number	Diff line change
`@@ -1141,6 +1141,7 @@ BasicBlock llvm::splitBlockBefore(BasicBlock Old, BasicBlock::iterator SplitPt`
`1141`	`1141`	`}`
`1142`	`1142`
`1143`	`1143`	`/// Update DominatorTree, LoopInfo, and LCCSA analysis information.`
	`1144`	`+/// Invalidates DFS Numbering when DTU or DT is provided.`
`1144`	`1145`	`static void UpdateAnalysisInformation(BasicBlock OldBB, BasicBlock NewBB,`
`1145`	`1146`	`ArrayRef<BasicBlock *> Preds,`
`1146`	`1147`	`DomTreeUpdater DTU, DominatorTree DT,`