From bdd9b3caad073058a5dcba60f6bc7934faf15c31 Mon Sep 17 00:00:00 2001
From: David Blaikie <dblaikie@gmail.com>
Date: Sun, 15 Mar 2015 01:21:34 +0000
Subject: [PATCH] IntervalIterator: Add move semantics rather than relying on
 broken implicit copy ctor (found with -Wdeprecated)

We were just getting lucky because the copy ctor would be elided by RVO.

llvm-svn: 232297
---
 llvm/include/llvm/Analysis/IntervalIterator.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/llvm/include/llvm/Analysis/IntervalIterator.h b/llvm/include/llvm/Analysis/IntervalIterator.h
index ab70ad91b841..da622fd5fb6a 100644
--- a/llvm/include/llvm/Analysis/IntervalIterator.h
+++ b/llvm/include/llvm/Analysis/IntervalIterator.h
@@ -105,6 +105,12 @@ public:
     }
   }
 
+  IntervalIterator(IntervalIterator &&x)
+      : IntStack(std::move(x.IntStack)), Visited(std::move(x.Visited)),
+        OrigContainer(x.OrigContainer), IOwnMem(x.IOwnMem) {
+    x.IOwnMem = false;
+  }
+
   IntervalIterator(IntervalPartition &IP, bool OwnMemory) : IOwnMem(OwnMemory) {
     OrigContainer = &IP;
     if (!ProcessInterval(IP.getRootInterval())) {