Make the spiller responsible for updating the LiveStacks analysis.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117337 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/LiveStackAnalysis.cpp

@@ -28,6 +28,8 @@ char LiveStacks::ID = 0;
 INITIALIZE_PASS(LiveStacks, "livestacks",
                 "Live Stack Slot Analysis", false, false)
 
+char &llvm::LiveStacksID = LiveStacks::ID;
+
 void LiveStacks::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesAll();
   AU.addPreserved<SlotIndexes>();