From 27e4666c20650f2b10d93b98b7a0625a363df9df Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Mon, 27 Apr 2009 17:35:19 +0000
Subject: [PATCH] Also delete last unused val#.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70212 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/LiveInterval.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/CodeGen/LiveInterval.cpp b/lib/CodeGen/LiveInterval.cpp
index 0450c355dce..c34b628d5fe 100644
--- a/lib/CodeGen/LiveInterval.cpp
+++ b/lib/CodeGen/LiveInterval.cpp
@@ -629,6 +629,12 @@ void LiveInterval::MergeInClobberRanges(const LiveInterval &Clobbers,
       UnusedValNo = 0;
     }
   }
+
+  if (UnusedValNo) {
+    // Delete the last unused val#.
+    valnos.pop_back();
+    UnusedValNo->~VNInfo();
+  }
 }
 
 void LiveInterval::MergeInClobberRange(unsigned Start, unsigned End,
-- 
2.34.1