Revert http://reviews.llvm.org/D19926 as it breaks tests.

llvm-svn: 268681

1 files changed, 28 insertions, 24 deletions

diff --git a/llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp b/llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp
index 97c5f183dcb..e6933336947 100644
--- a/llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp
+++ b/llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp
@@ -196,31 +196,35 @@ PreservedAnalyses SimplifyCFGPass::run(Function &F,
   return PreservedAnalyses::all();
 }
 
-CFGSimplifyPass::CFGSimplifyPass(int T,
-            std::function<bool(const Function &)> Ftor)
-    : FunctionPass(ID), PredicateFtor(Ftor) {
-  BonusInstThreshold = (T == -1) ? UserBonusInstThreshold : unsigned(T);
-  initializeCFGSimplifyPassPass(*PassRegistry::getPassRegistry());
-}
-
-bool CFGSimplifyPass::runOnFunction(Function &F) {
-  if (PredicateFtor && !PredicateFtor(F))
-    return false;
-
-  if (skipFunction(F))
-    return false;
-
-  AssumptionCache *AC =
-      &getAnalysis<AssumptionCacheTracker>().getAssumptionCache(F);
-  const TargetTransformInfo &TTI =
-      getAnalysis<TargetTransformInfoWrapperPass>().getTTI(F);
-  return simplifyFunctionCFG(F, TTI, AC, BonusInstThreshold);
-}
+namespace {
+struct CFGSimplifyPass : public FunctionPass {
+  static char ID; // Pass identification, replacement for typeid
+  unsigned BonusInstThreshold;
+  std::function<bool(const Function &)> PredicateFtor;
+
+  CFGSimplifyPass(int T = -1,
+                  std::function<bool(const Function &)> Ftor = nullptr)
+      : FunctionPass(ID), PredicateFtor(Ftor) {
+    BonusInstThreshold = (T == -1) ? UserBonusInstThreshold : unsigned(T);
+    initializeCFGSimplifyPassPass(*PassRegistry::getPassRegistry());
+  }
+  bool runOnFunction(Function &F) override {
+    if (skipFunction(F) || (PredicateFtor && !PredicateFtor(F)))
+      return false;
+
+    AssumptionCache *AC =
+        &getAnalysis<AssumptionCacheTracker>().getAssumptionCache(F);
+    const TargetTransformInfo &TTI =
+        getAnalysis<TargetTransformInfoWrapperPass>().getTTI(F);
+    return simplifyFunctionCFG(F, TTI, AC, BonusInstThreshold);
+  }
 
-void CFGSimplifyPass::getAnalysisUsage(AnalysisUsage &AU) const {
-  AU.addRequired<AssumptionCacheTracker>();
-  AU.addRequired<TargetTransformInfoWrapperPass>();
-  AU.addPreserved<GlobalsAAWrapperPass>();
+  void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.addRequired<AssumptionCacheTracker>();
+    AU.addRequired<TargetTransformInfoWrapperPass>();
+    AU.addPreserved<GlobalsAAWrapperPass>();
+  }
+};
 }
 
 char CFGSimplifyPass::ID = 0;