Make PBQP require/preserve MachineLoopInfo - the spiller requires it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185378 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/RegAllocPBQP.cpp b/lib/CodeGen/RegAllocPBQP.cpp
index ecfe6ade9b501de1bcbac8e9eb119e62c7e2f5dc..81ecca1f2e0e030aa5407844a08a8e10dc970e52 100644 (file)
--- a/lib/CodeGen/RegAllocPBQP.cpp
+++ b/lib/CodeGen/RegAllocPBQP.cpp
@@ -43,6 +43,7 @@
 #include "llvm/CodeGen/MachineBlockFrequencyInfo.h"
 #include "llvm/CodeGen/MachineDominators.h"
 #include "llvm/CodeGen/MachineFunctionPass.h"
+#include "llvm/CodeGen/MachineLoopInfo.h"
 #include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/CodeGen/PBQP/Graph.h"
 #include "llvm/CodeGen/PBQP/HeuristicSolver.h"
@@ -436,6 +437,8 @@ void RegAllocPBQP::getAnalysisUsage(AnalysisUsage &au) const {
   au.addPreserved<LiveStacks>();
   au.addRequired<MachineBlockFrequencyInfo>();
   au.addPreserved<MachineBlockFrequencyInfo>();
+  au.addRequired<MachineLoopInfo>();
+  au.addPreserved<MachineLoopInfo>();
   au.addRequired<MachineDominatorTree>();
   au.addPreserved<MachineDominatorTree>();
   au.addRequired<VirtRegMap>();