Change errs() to dbgs().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92587 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/VirtRegMap.cpp b/lib/CodeGen/VirtRegMap.cpp
index c8c5d86..d4fb2e4 100644
--- a/lib/CodeGen/VirtRegMap.cpp
+++ b/lib/CodeGen/VirtRegMap.cpp
@@ -278,5 +278,5 @@
 }
 
 void VirtRegMap::dump() const {
-  print(errs());
+  print(dbgs());
 }