Fix a memory leak.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41739 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index 2f93b76948..3d324b7bfc 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -62,10 +62,11 @@ void LiveIntervals::getAnalysisUsage(AnalysisUsage &AU) const {
 }
 
 void LiveIntervals::releaseMemory() {
-  VNInfoAllocator.Reset();
   mi2iMap_.clear();
   i2miMap_.clear();
   r2iMap_.clear();
+  // Release VNInfo memroy regions after all VNInfo objects are dtor'd.
+  VNInfoAllocator.Reset();
   for (unsigned i = 0, e = ClonedMIs.size(); i != e; ++i)
     delete ClonedMIs[i];
 }