From beaeb78630eea56a7d03a278dbaaa9a8b6122308 Mon Sep 17 00:00:00 2001
From: Yaron Keren <yaron.keren@gmail.com>
Date: Sat, 28 Feb 2015 13:11:24 +0000
Subject: [PATCH] Silence variable set but not used warning, NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230848 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/RewriteStatepointsForGC.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/Transforms/Scalar/RewriteStatepointsForGC.cpp b/lib/Transforms/Scalar/RewriteStatepointsForGC.cpp
index 4e165e24f49..15f09a5fe4a 100644
--- a/lib/Transforms/Scalar/RewriteStatepointsForGC.cpp
+++ b/lib/Transforms/Scalar/RewriteStatepointsForGC.cpp
@@ -737,9 +737,10 @@ static Value *findBasePointer(Value *I, DefiningValueMapTy &cache,
   // have reached conflict state.  The current version seems too conservative.
 
   bool progress = true;
-  size_t oldSize = 0;
   while (progress) {
-    oldSize = states.size();
+#ifndef NDEBUG
+    size_t oldSize = states.size();
+#endif
     progress = false;
     // We're only changing keys in this loop, thus safe to keep iterators
     for (auto Pair : states) {