1 files changed, 7 insertions, 1 deletions
diff --git a/lib/Target/ARM/ARMTargetMachine.cpp b/lib/Target/ARM/ARMTargetMachine.cpp
index 95f57b7b34..ab299b13b7 100644
--- a/lib/Target/ARM/ARMTargetMachine.cpp
+++ b/lib/Target/ARM/ARMTargetMachine.cpp
@@ -79,9 +79,15 @@ ThumbTargetMachine::ThumbTargetMachine(const Target &T, const std::string &TT,
     TLInfo(*this) {
 }
 
+// Pass Pipeline Configuration
+bool ARMBaseTargetMachine::addPreISel(PassManagerBase &PM,
+                                      CodeGenOpt::Level OptLevel) {
+  if (OptLevel != CodeGenOpt::None)
+    PM.add(createARMGlobalMergePass(getTargetLowering()));
 
+  return false;
+}
 
-// Pass Pipeline Configuration
 bool ARMBaseTargetMachine::addInstSelector(PassManagerBase &PM,
                                            CodeGenOpt::Level OptLevel) {
   PM.add(createARMISelDag(*this, OptLevel));