From 2a237f19f1158a46d298dcb888128378c8a132d8 Mon Sep 17 00:00:00 2001
From: James Molloy <james.molloy@arm.com>
Date: Thu, 25 May 2017 13:11:18 +0000
Subject: [PATCH] [GVNSink] Don't define operator<< in NDEBUG

Without debug macros enabled, the raw_ostream operator<< overload
is unused.

llvm-svn: 303852
---
 llvm/lib/Transforms/Scalar/GVNSink.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/llvm/lib/Transforms/Scalar/GVNSink.cpp b/llvm/lib/Transforms/Scalar/GVNSink.cpp
index cd5b54b35cee..a88c9412cd81 100644
--- a/llvm/lib/Transforms/Scalar/GVNSink.cpp
+++ b/llvm/lib/Transforms/Scalar/GVNSink.cpp
@@ -174,12 +174,14 @@ struct SinkingInstructionCandidate {
   }
 };
 
+#ifndef NDEBUG
 llvm::raw_ostream &operator<<(llvm::raw_ostream &OS,
                               const SinkingInstructionCandidate &C) {
   OS << "<Candidate Cost=" << C.Cost << " #Blocks=" << C.NumBlocks
      << " #Insts=" << C.NumInstructions << " #PHIs=" << C.NumPHIs << ">";
   return OS;
 }
+#endif
 
 //===----------------------------------------------------------------------===//