fold fp_round(fp_round(x)) -> fp_round(x).

[oota-llvm.git] / lib / CodeGen / SelectionDAG / ScheduleDAGRRList.cpp

diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
index 4cd4577715d6baf888e5010e52dfcf710b3633db..05ba46d6ac6cf9f32c80a6adc28aeca2574914d7 100644 (file)
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
@@ -1208,13 +1208,13 @@ static unsigned calcMaxScratches(const SUnit *SU) {
   for (SUnit::const_pred_iterator I = SU->Preds.begin(), E = SU->Preds.end();
        I != E; ++I) {
     if (I->isCtrl) continue;  // ignore chain preds
-    if (I->Dep->Node->getOpcode() != ISD::CopyFromReg)
+    if (!I->Dep->Node || I->Dep->Node->getOpcode() != ISD::CopyFromReg)
       Scratches++;
   }
   for (SUnit::const_succ_iterator I = SU->Succs.begin(), E = SU->Succs.end();
        I != E; ++I) {
     if (I->isCtrl) continue;  // ignore chain succs
-    if (I->Dep->Node->getOpcode() != ISD::CopyToReg)
+    if (!I->Dep->Node || I->Dep->Node->getOpcode() != ISD::CopyToReg)
       Scratches += 10;
   }
   return Scratches;