1 files changed, 16 insertions, 23 deletions
diff --git a/contrib/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp b/contrib/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
index b22440d..054e3dd 100644
--- a/contrib/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
+++ b/contrib/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
@@ -690,21 +690,11 @@ void ScheduleDAGSDNodes::VerifyScheduledSequence(bool isBottomUp) {
 }
 #endif // NDEBUG
 
-namespace {
-  struct OrderSorter {
-    bool operator()(const std::pair<unsigned, MachineInstr*> &A,
-                    const std::pair<unsigned, MachineInstr*> &B) {
-      return A.first < B.first;
-    }
-  };
-}
-
 /// ProcessSDDbgValues - Process SDDbgValues associated with this node.
-static void ProcessSDDbgValues(SDNode *N, SelectionDAG *DAG,
-                               InstrEmitter &Emitter,
-                    SmallVector<std::pair<unsigned, MachineInstr*>, 32> &Orders,
-                            DenseMap<SDValue, unsigned> &VRBaseMap,
-                            unsigned Order) {
+static void
+ProcessSDDbgValues(SDNode *N, SelectionDAG *DAG, InstrEmitter &Emitter,
+                   SmallVectorImpl<std::pair<unsigned, MachineInstr*> > &Orders,
+                   DenseMap<SDValue, unsigned> &VRBaseMap, unsigned Order) {
   if (!N->getHasDebugValue())
     return;
 
@@ -731,12 +721,12 @@ static void ProcessSDDbgValues(SDNode *N, SelectionDAG *DAG,
 // ProcessSourceNode - Process nodes with source order numbers. These are added
 // to a vector which EmitSchedule uses to determine how to insert dbg_value
 // instructions in the right order.
-static void ProcessSourceNode(SDNode *N, SelectionDAG *DAG,
-                           InstrEmitter &Emitter,
-                           DenseMap<SDValue, unsigned> &VRBaseMap,
-                    SmallVector<std::pair<unsigned, MachineInstr*>, 32> &Orders,
-                           SmallSet<unsigned, 8> &Seen) {
-  unsigned Order = DAG->GetOrdering(N);
+static void
+ProcessSourceNode(SDNode *N, SelectionDAG *DAG, InstrEmitter &Emitter,
+                  DenseMap<SDValue, unsigned> &VRBaseMap,
+                  SmallVectorImpl<std::pair<unsigned, MachineInstr*> > &Orders,
+                  SmallSet<unsigned, 8> &Seen) {
+  unsigned Order = N->getIROrder();
   if (!Order || !Seen.insert(Order)) {
     // Process any valid SDDbgValues even if node does not have any order
     // assigned.
@@ -745,7 +735,10 @@ static void ProcessSourceNode(SDNode *N, SelectionDAG *DAG,
   }
 
   MachineBasicBlock *BB = Emitter.getBlock();
-  if (Emitter.getInsertPos() == BB->begin() || BB->back().isPHI()) {
+  if (Emitter.getInsertPos() == BB->begin() || BB->back().isPHI() ||
+      // Fast-isel may have inserted some instructions, in which case the
+      // BB->back().isPHI() test will not fire when we want it to.
+      prior(Emitter.getInsertPos())->isPHI()) {
     // Did not insert any instruction.
     Orders.push_back(std::make_pair(Order, (MachineInstr*)0));
     return;
@@ -858,7 +851,7 @@ EmitSchedule(MachineBasicBlock::iterator &InsertPos) {
 
     // Sort the source order instructions and use the order to insert debug
     // values.
-    std::sort(Orders.begin(), Orders.end(), OrderSorter());
+    std::sort(Orders.begin(), Orders.end(), less_first());
 
     SDDbgInfo::DbgIterator DI = DAG->DbgBegin();
     SDDbgInfo::DbgIterator DE = DAG->DbgEnd();
@@ -883,7 +876,7 @@ EmitSchedule(MachineBasicBlock::iterator &InsertPos) {
             // Insert at the instruction, which may be in a different
             // block, if the block was split by a custom inserter.
             MachineBasicBlock::iterator Pos = MI;
-            MI->getParent()->insert(llvm::next(Pos), DbgMI);
+            MI->getParent()->insert(Pos, DbgMI);
           }
         }
       }