diff options
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/ScheduleDAGInstrs.cpp | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp b/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp index 95f1a06e0c0..409e7041907 100644 --- a/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp +++ b/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp @@ -614,10 +614,10 @@ iterateChainSucc(AliasAnalysis *AA, const MachineFrameInfo *MFI, } // Track current depth. (*Depth)++; - // Iterate over chain dependencies only. + // Iterate over memory dependencies only. for (SUnit::const_succ_iterator I = SUb->Succs.begin(), E = SUb->Succs.end(); I != E; ++I) - if (I->isCtrl()) + if (I->isNormalMemoryOrBarrier()) iterateChainSucc (AA, MFI, SUa, I->getSUnit(), ExitSU, Depth, Visited); return *Depth; } @@ -644,11 +644,12 @@ static void adjustChainDeps(AliasAnalysis *AA, const MachineFrameInfo *MFI, Dep.setLatency(((*I)->getInstr()->mayLoad()) ? LatencyToLoad : 0); (*I)->addPred(Dep); } - // Now go through all the chain successors and iterate from them. - // Keep track of visited nodes. + + // Iterate recursively over all previously added memory chain + // successors. Keep track of visited nodes. for (SUnit::const_succ_iterator J = (*I)->Succs.begin(), JE = (*I)->Succs.end(); J != JE; ++J) - if (J->isCtrl()) + if (J->isNormalMemoryOrBarrier()) iterateChainSucc (AA, MFI, SU, J->getSUnit(), ExitSU, &Depth, Visited); } |
