Add missing getAnalysisUsage in MachineBlockFrequency.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135714 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/MachineBlockFrequency.cpp b/lib/CodeGen/MachineBlockFrequency.cpp
index 893a320a6a63e53afbb9efb134538e9b1d9bd7bd..0a77bdd38a20c97edbfcb3d1915f1761d4363479 100644 (file)
--- a/lib/CodeGen/MachineBlockFrequency.cpp
+++ b/lib/CodeGen/MachineBlockFrequency.cpp
@@ -41,6 +41,7 @@ MachineBlockFrequency::~MachineBlockFrequency() {
 void MachineBlockFrequency::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addRequired<MachineBranchProbabilityInfo>();
   AU.setPreservesAll();
+  MachineFunctionPass::getAnalysisUsage(AU);
 }
 
 bool MachineBlockFrequency::runOnMachineFunction(MachineFunction &F) {