Tracing to help investigate issues with SjLj spill code.

[oota-llvm.git] / lib / CodeGen / ScheduleDAGInstrs.h

diff --git a/lib/CodeGen/ScheduleDAGInstrs.h b/lib/CodeGen/ScheduleDAGInstrs.h
index ae58bc7e5717767968d81d84df18f4b62cf04e8e..666bdf548c718c4cdb788e92f682691c31972dfd 100644 (file)
--- a/lib/CodeGen/ScheduleDAGInstrs.h
+++ b/lib/CodeGen/ScheduleDAGInstrs.h
@@ -48,7 +48,8 @@ namespace llvm {
     /// VisitLoop - Clear out any previous state and analyze the given loop.
     ///
     void VisitLoop(const MachineLoop *Loop) {
-      Deps.clear();
+      assert(Deps.empty() && "stale loop dependencies");
+
       MachineBasicBlock *Header = Loop->getHeader();
       SmallSet<unsigned, 8> LoopLiveIns;
       for (MachineBasicBlock::livein_iterator LI = Header->livein_begin(),
@@ -109,10 +110,6 @@ namespace llvm {
     /// initialized and destructed for each block.
     std::vector<std::vector<SUnit *> > Defs;
     std::vector<std::vector<SUnit *> > Uses;
- 
-    /// DbgValues - Remember instruction that preceeds DBG_VALUE.
-    std::vector<std::pair<MachineInstr *, MachineInstr *> >DbgValues;
-    MachineInstr *FirstDbgValue;
 
     /// PendingLoads - Remember where unknown loads are after the most recent
     /// unknown store, as we iterate. As with Defs and Uses, this is here
@@ -128,6 +125,14 @@ namespace llvm {
     ///
     SmallSet<unsigned, 8> LoopLiveInRegs;
 
+  protected:
+
+    /// DbgValues - Remember instruction that preceeds DBG_VALUE.
+    typedef std::vector<std::pair<MachineInstr *, MachineInstr *> >
+      DbgValueVector;
+    DbgValueVector DbgValues;
+    MachineInstr *FirstDbgValue;
+
   public:
     MachineBasicBlock::iterator Begin;    // The beginning of the range to
                                           // be scheduled. The range extends