Hook in GlobalMerge pass

llvm-svn: 109359
diff --git a/llvm/lib/Target/ARM/ARMTargetMachine.cpp b/llvm/lib/Target/ARM/ARMTargetMachine.cpp
index 09203f9..9d7bf75 100644
--- a/llvm/lib/Target/ARM/ARMTargetMachine.cpp
+++ b/llvm/lib/Target/ARM/ARMTargetMachine.cpp
@@ -85,9 +85,15 @@
     TSInfo(*this) {
 }
 
-
-
 // Pass Pipeline Configuration
+bool ARMBaseTargetMachine::addPreISel(PassManagerBase &PM,
+                                      CodeGenOpt::Level OptLevel) {
+  if (OptLevel != CodeGenOpt::None)
+    PM.add(createARMGlobalMergePass(getTargetLowering()));
+
+  return false;
+}
+
 bool ARMBaseTargetMachine::addInstSelector(PassManagerBase &PM,
                                            CodeGenOpt::Level OptLevel) {
   PM.add(createARMISelDag(*this, OptLevel));