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author | David Goodwin <david_goodwin@apple.com> | 2009-11-12 19:08:21 +0000 |
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committer | David Goodwin <david_goodwin@apple.com> | 2009-11-12 19:08:21 +0000 |
commit | 12dd99dc308150a6beff32aafc824e1d6fec1139 (patch) | |
tree | eb3d33bed5ca1f1a02cf1b69a12e4748ed96a268 /lib/CodeGen/LatencyPriorityQueue.cpp | |
parent | 70d75ca3107ce05bc30ad3511aa669b9fab5eb90 (diff) | |
download | llvm-12dd99dc308150a6beff32aafc824e1d6fec1139.tar.gz llvm-12dd99dc308150a6beff32aafc824e1d6fec1139.tar.bz2 llvm-12dd99dc308150a6beff32aafc824e1d6fec1139.tar.xz |
Rename registers to break output dependencies in addition to anti-dependencies.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87015 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LatencyPriorityQueue.cpp')
-rw-r--r-- | lib/CodeGen/LatencyPriorityQueue.cpp | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/lib/CodeGen/LatencyPriorityQueue.cpp b/lib/CodeGen/LatencyPriorityQueue.cpp index 794ecf7bd1..23dce4a91a 100644 --- a/lib/CodeGen/LatencyPriorityQueue.cpp +++ b/lib/CodeGen/LatencyPriorityQueue.cpp @@ -55,7 +55,10 @@ SUnit *LatencyPriorityQueue::getSingleUnscheduledPred(SUnit *SU) { SUnit *OnlyAvailablePred = 0; for (SUnit::const_pred_iterator I = SU->Preds.begin(), E = SU->Preds.end(); I != E; ++I) { - if (IgnoreAntiDep && (I->getKind() == SDep::Anti)) continue; + if (IgnoreAntiDep && + ((I->getKind() == SDep::Anti) || (I->getKind() == SDep::Output))) + continue; + SUnit &Pred = *I->getSUnit(); if (!Pred.isScheduled) { // We found an available, but not scheduled, predecessor. If it's the @@ -75,7 +78,10 @@ void LatencyPriorityQueue::push_impl(SUnit *SU) { unsigned NumNodesBlocking = 0; for (SUnit::const_succ_iterator I = SU->Succs.begin(), E = SU->Succs.end(); I != E; ++I) { - if (IgnoreAntiDep && (I->getKind() == SDep::Anti)) continue; + if (IgnoreAntiDep && + ((I->getKind() == SDep::Anti) || (I->getKind() == SDep::Output))) + continue; + if (getSingleUnscheduledPred(I->getSUnit()) == SU) ++NumNodesBlocking; } @@ -92,7 +98,10 @@ void LatencyPriorityQueue::push_impl(SUnit *SU) { void LatencyPriorityQueue::ScheduledNode(SUnit *SU) { for (SUnit::const_succ_iterator I = SU->Succs.begin(), E = SU->Succs.end(); I != E; ++I) { - if (IgnoreAntiDep && (I->getKind() == SDep::Anti)) continue; + if (IgnoreAntiDep && + ((I->getKind() == SDep::Anti) || (I->getKind() == SDep::Output))) + continue; + AdjustPriorityOfUnscheduledPreds(I->getSUnit()); } } |