[PATCH] D99700: [LoopFlatten] Do not report CFG analyses as up-to-date

[Yevgeny Rouban via Phabricator via llvm-commits]

yrouban created this revision.
yrouban added reviewers: SjoerdMeijer, dmgreen, TaWeiTu.
Herald added a subscriber: hiraditya.
yrouban requested review of this revision.
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Re-enabling PreservedCFGChecker (D91327 <https://reviews.llvm.org/D91327>) the LoopFlatten was found as reporting Preserved<CFGAnalyses> while changed CFG.
This fix just removes CFGAnalyses from the returned preserved analyses set.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D99700

Files:
  llvm/lib/Transforms/Scalar/LoopFlatten.cpp


Index: llvm/lib/Transforms/Scalar/LoopFlatten.cpp
===================================================================
--- llvm/lib/Transforms/Scalar/LoopFlatten.cpp
+++ llvm/lib/Transforms/Scalar/LoopFlatten.cpp
@@ -682,9 +682,7 @@
   if (!Flatten(DT, LI, SE, AC, TTI))
     return PreservedAnalyses::all();
 
-  PreservedAnalyses PA;
-  PA.preserveSet<CFGAnalyses>();
-  return PA;
+  return PreservedAnalyses::none();
 }
 
 namespace {


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