diff options
Diffstat (limited to 'llvm/lib/CodeGen/MachinePipeliner.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachinePipeliner.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/MachinePipeliner.cpp b/llvm/lib/CodeGen/MachinePipeliner.cpp index 527f1e4..34e6c63 100644 --- a/llvm/lib/CodeGen/MachinePipeliner.cpp +++ b/llvm/lib/CodeGen/MachinePipeliner.cpp @@ -2723,7 +2723,8 @@ void SwingSchedulerDAG::generateExistingPhis( int LVNumStages = Schedule.getStagesForPhi(LoopVal); int StageDiff = (StageScheduled - LoopValStage); LVNumStages -= StageDiff; - if (LVNumStages > (int)np) { + // Make sure the loop value Phi has been processed already. + if (LVNumStages > (int)np && VRMap[CurStageNum].count(LoopVal)) { NewReg = PhiOp2; unsigned ReuseStage = CurStageNum; if (Schedule.isLoopCarried(this, *PhiInst)) |