Move pass configuration out of pass constructors: BranchFolderPass

llvm-svn: 150095

1 files changed, 16 insertions, 12 deletions

diff --git a/llvm/lib/CodeGen/BranchFolding.cpp b/llvm/lib/CodeGen/BranchFolding.cpp
index af37742c4b5..4929e388900 100644
--- a/llvm/lib/CodeGen/BranchFolding.cpp
+++ b/llvm/lib/CodeGen/BranchFolding.cpp
@@ -61,29 +61,33 @@ TailMergeSize("tail-merge-size",
 
 namespace {
   /// BranchFolderPass - Wrap branch folder in a machine function pass.
-  class BranchFolderPass : public MachineFunctionPass,
-                           public BranchFolder {
+  class BranchFolderPass : public MachineFunctionPass {
   public:
     static char ID;
-    explicit BranchFolderPass(bool defaultEnableTailMerge)
-      : MachineFunctionPass(ID), BranchFolder(defaultEnableTailMerge, true) {}
+    explicit BranchFolderPass(): MachineFunctionPass(ID) {}
 
     virtual bool runOnMachineFunction(MachineFunction &MF);
-    virtual const char *getPassName() const { return "Control Flow Optimizer"; }
+
+    virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+      AU.addRequired<TargetPassConfig>();
+      MachineFunctionPass::getAnalysisUsage(AU);
+    }
   };
 }
 
 char BranchFolderPass::ID = 0;
+char &llvm::BranchFolderPassID = BranchFolderPass::ID;
 
-FunctionPass *llvm::createBranchFoldingPass(bool DefaultEnableTailMerge) {
-  return new BranchFolderPass(DefaultEnableTailMerge);
-}
+INITIALIZE_PASS(BranchFolderPass, "branch-folder",
+                "Control Flow Optimizer", false, false)
 
 bool BranchFolderPass::runOnMachineFunction(MachineFunction &MF) {
-  return OptimizeFunction(MF,
-                          MF.getTarget().getInstrInfo(),
-                          MF.getTarget().getRegisterInfo(),
-                          getAnalysisIfAvailable<MachineModuleInfo>());
+  TargetPassConfig *PassConfig = &getAnalysis<TargetPassConfig>();
+  BranchFolder Folder(PassConfig->getEnableTailMerge(), /*CommonHoist=*/true);
+  return Folder.OptimizeFunction(MF,
+                                 MF.getTarget().getInstrInfo(),
+                                 MF.getTarget().getRegisterInfo(),
+                                 getAnalysisIfAvailable<MachineModuleInfo>());
 }