Time the emission of debug values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136584 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAllocGreedy.cpp b/lib/CodeGen/RegAllocGreedy.cpp
index 239c8e4..ecc4724 100644
--- a/lib/CodeGen/RegAllocGreedy.cpp
+++ b/lib/CodeGen/RegAllocGreedy.cpp
@@ -1595,7 +1595,10 @@
   }
 
   // Write out new DBG_VALUE instructions.
-  DebugVars->emitDebugValues(VRM);
+  {
+    NamedRegionTimer T("Emit Debug Info", TimerGroupName, TimePassesIsEnabled);
+    DebugVars->emitDebugValues(VRM);
+  }
 
   // The pass output is in VirtRegMap. Release all the transient data.
   releaseMemory();