Remove LiveIntervalUnions from RegAllocBase.

They are living in LiveRegMatrix now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158868 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAllocBasic.cpp b/lib/CodeGen/RegAllocBasic.cpp
index 9d1f01a..9c893d3 100644
--- a/lib/CodeGen/RegAllocBasic.cpp
+++ b/lib/CodeGen/RegAllocBasic.cpp
@@ -169,7 +169,6 @@
 
 void RABasic::releaseMemory() {
   SpillerInstance.reset(0);
-  RegAllocBase::releaseMemory();
 }
 
 
@@ -287,8 +286,9 @@
   MF = &mf;
   DEBUG(RMF = &getAnalysis<RenderMachineFunction>());
 
-  RegAllocBase::init(getAnalysis<VirtRegMap>(), getAnalysis<LiveIntervals>());
-  Matrix = &getAnalysis<LiveRegMatrix>();
+  RegAllocBase::init(getAnalysis<VirtRegMap>(),
+                     getAnalysis<LiveIntervals>(),
+                     getAnalysis<LiveRegMatrix>());
   SpillerInstance.reset(createInlineSpiller(*this, *MF, *VRM));
 
   allocatePhysRegs();