Don't assert if we can't constant fold extract/insertvalue

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

diff --git a/include/llvm/CodeGen/ScheduleDAGInstrs.h b/include/llvm/CodeGen/ScheduleDAGInstrs.h
index b71ece430511146be8a8031bed63de4e1c991b4c..9ab1013bf167ba8e1d768a5cc1b042f25ca62d33 100644 (file)
--- a/include/llvm/CodeGen/ScheduleDAGInstrs.h
+++ b/include/llvm/CodeGen/ScheduleDAGInstrs.h
@@ -150,12 +150,15 @@ namespace llvm {
 
     virtual ~ScheduleDAGInstrs() {}
 
+    /// \brief Expose LiveIntervals for use in DAG mutators and such.
+    LiveIntervals *getLIS() const { return LIS; }
+
     /// \brief Get the machine model for instruction scheduling.
     const TargetSchedModel *getSchedModel() const { return &SchedModel; }
 
     /// \brief Resolve and cache a resolved scheduling class for an SUnit.
     const MCSchedClassDesc *getSchedClass(SUnit *SU) const {
-      if (!SU->SchedClass)
+      if (!SU->SchedClass && SchedModel.hasInstrSchedModel())
         SU->SchedClass = SchedModel.resolveSchedClass(SU->getInstr());
       return SU->SchedClass;
     }