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Rename registers to break output dependencies in addition to anti-dependencies.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87015 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Goodwin
2009-11-12 19:08:21 +00:00
parent 70d75ca310
commit 12dd99dc30
4 changed files with 30 additions and 10 deletions
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lib/CodeGen/ScheduleDAG.cpp
+8 -2
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@@ -214,7 +214,10 @@ void SUnit::ComputeDepth(bool IgnoreAntiDep) {
unsigned MaxPredDepth = 0;
for (SUnit::const_pred_iterator I = Cur->Preds.begin(),
E = Cur->Preds.end(); I != E; ++I) {
if (IgnoreAntiDep && (I->getKind() == SDep::Anti)) continue;
if (IgnoreAntiDep &&
((I->getKind() == SDep::Anti) || (I->getKind() == SDep::Output)))
continue;
SUnit *PredSU = I->getSUnit();
if (PredSU->isDepthCurrent)
MaxPredDepth = std::max(MaxPredDepth,
@@ -248,7 +251,10 @@ void SUnit::ComputeHeight(bool IgnoreAntiDep) {
unsigned MaxSuccHeight = 0;
for (SUnit::const_succ_iterator I = Cur->Succs.begin(),
E = Cur->Succs.end(); I != E; ++I) {
if (IgnoreAntiDep && (I->getKind() == SDep::Anti)) continue;
if (IgnoreAntiDep &&
((I->getKind() == SDep::Anti) || (I->getKind() == SDep::Output)))
continue;
SUnit *SuccSU = I->getSUnit();
if (SuccSU->isHeightCurrent)
MaxSuccHeight = std::max(MaxSuccHeight,