[PM/SimplifyCFG] Preserve GlobalsAA even if the IR is mutated.

llvm-svn: 272139

1 files changed, 5 insertions, 4 deletions

diff --git a/llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp b/llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp
index 344a89f3604..cf6a43e752c 100644
--- a/llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp
+++ b/llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp
@@ -191,10 +191,11 @@ PreservedAnalyses SimplifyCFGPass::run(Function &F,
   auto &TTI = AM.getResult<TargetIRAnalysis>(F);
   auto &AC = AM.getResult<AssumptionAnalysis>(F);
 
-  if (simplifyFunctionCFG(F, TTI, &AC, BonusInstThreshold))
-    return PreservedAnalyses::none();
-
-  return PreservedAnalyses::all();
+  if (!simplifyFunctionCFG(F, TTI, &AC, BonusInstThreshold))
+    return PreservedAnalyses::all();
+  PreservedAnalyses PA;
+  PA.preserve<GlobalsAA>();
+  return PA;
 }
 
 namespace {