diff options
| -rw-r--r-- | lib/CodeGen/ScheduleDAGInstrs.cpp | 1 | ||||
| -rw-r--r-- | lib/CodeGen/ScheduleDAGInstrs.h | 3 |
2 files changed, 3 insertions, 1 deletions
diff --git a/lib/CodeGen/ScheduleDAGInstrs.cpp b/lib/CodeGen/ScheduleDAGInstrs.cpp index c5647fb..34b8ab0 100644 --- a/lib/CodeGen/ScheduleDAGInstrs.cpp +++ b/lib/CodeGen/ScheduleDAGInstrs.cpp @@ -134,6 +134,7 @@ static const Value *getUnderlyingObjectForInstr(const MachineInstr *MI, } void ScheduleDAGInstrs::StartBlock(MachineBasicBlock *BB) { + LoopRegs.Deps.clear(); if (MachineLoop *ML = MLI.getLoopFor(BB)) if (BB == ML->getLoopLatch()) { MachineBasicBlock *Header = ML->getHeader(); diff --git a/lib/CodeGen/ScheduleDAGInstrs.h b/lib/CodeGen/ScheduleDAGInstrs.h index 6e672f4..666bdf5 100644 --- 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(), |