Release build: guard dump functions with "ifndef NDEBUG"

No functional change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163344 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp
index 558bd35..bce43bb 100644
--- a/lib/Transforms/Scalar/GVN.cpp
+++ b/lib/Transforms/Scalar/GVN.cpp
@@ -632,6 +632,7 @@
 INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
 INITIALIZE_PASS_END(GVN, "gvn", "Global Value Numbering", false, false)
 
+#ifndef NDEBUG
 void GVN::dump(DenseMap<uint32_t, Value*>& d) {
   errs() << "{\n";
   for (DenseMap<uint32_t, Value*>::iterator I = d.begin(),
@@ -641,6 +642,7 @@
   }
   errs() << "}\n";
 }
+#endif
 
 /// IsValueFullyAvailableInBlock - Return true if we can prove that the value
 /// we're analyzing is fully available in the specified block.  As we go, keep