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-rw-r--r--lib/CodeGen/ScheduleDAG.cpp103
1 files changed, 60 insertions, 43 deletions
diff --git a/lib/CodeGen/ScheduleDAG.cpp b/lib/CodeGen/ScheduleDAG.cpp
index a8452df..5a59862 100644
--- a/lib/CodeGen/ScheduleDAG.cpp
+++ b/lib/CodeGen/ScheduleDAG.cpp
@@ -19,6 +19,7 @@
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Support/Debug.h"
+#include "llvm/Support/raw_ostream.h"
#include <climits>
using namespace llvm;
@@ -40,7 +41,7 @@ void ScheduleDAG::dumpSchedule() const {
if (SUnit *SU = Sequence[i])
SU->dump(this);
else
- cerr << "**** NOOP ****\n";
+ errs() << "**** NOOP ****\n";
}
}
@@ -59,9 +60,11 @@ void ScheduleDAG::Run(MachineBasicBlock *bb,
Schedule();
- DOUT << "*** Final schedule ***\n";
- DEBUG(dumpSchedule());
- DOUT << "\n";
+ DEBUG({
+ errs() << "*** Final schedule ***\n";
+ dumpSchedule();
+ errs() << '\n';
+ });
}
/// addPred - This adds the specified edge as a pred of the current node if
@@ -79,13 +82,19 @@ void SUnit::addPred(const SDep &D) {
SUnit *N = D.getSUnit();
// Update the bookkeeping.
if (D.getKind() == SDep::Data) {
+ assert(NumPreds < UINT_MAX && "NumPreds will overflow!");
+ assert(N->NumSuccs < UINT_MAX && "NumSuccs will overflow!");
++NumPreds;
++N->NumSuccs;
}
- if (!N->isScheduled)
+ if (!N->isScheduled) {
+ assert(NumPredsLeft < UINT_MAX && "NumPredsLeft will overflow!");
++NumPredsLeft;
- if (!isScheduled)
+ }
+ if (!isScheduled) {
+ assert(N->NumSuccsLeft < UINT_MAX && "NumSuccsLeft will overflow!");
++N->NumSuccsLeft;
+ }
Preds.push_back(D);
N->Succs.push_back(P);
if (P.getLatency() != 0) {
@@ -118,13 +127,19 @@ void SUnit::removePred(const SDep &D) {
Preds.erase(I);
// Update the bookkeeping.
if (P.getKind() == SDep::Data) {
+ assert(NumPreds > 0 && "NumPreds will underflow!");
+ assert(N->NumSuccs > 0 && "NumSuccs will underflow!");
--NumPreds;
--N->NumSuccs;
}
- if (!N->isScheduled)
+ if (!N->isScheduled) {
+ assert(NumPredsLeft > 0 && "NumPredsLeft will underflow!");
--NumPredsLeft;
- if (!isScheduled)
+ }
+ if (!isScheduled) {
+ assert(N->NumSuccsLeft > 0 && "NumSuccsLeft will underflow!");
--N->NumSuccsLeft;
+ }
if (P.getLatency() != 0) {
this->setDepthDirty();
N->setHeightDirty();
@@ -256,56 +271,58 @@ void SUnit::ComputeHeight() {
/// SUnit - Scheduling unit. It's an wrapper around either a single SDNode or
/// a group of nodes flagged together.
void SUnit::dump(const ScheduleDAG *G) const {
- cerr << "SU(" << NodeNum << "): ";
+ errs() << "SU(" << NodeNum << "): ";
G->dumpNode(this);
}
void SUnit::dumpAll(const ScheduleDAG *G) const {
dump(G);
- cerr << " # preds left : " << NumPredsLeft << "\n";
- cerr << " # succs left : " << NumSuccsLeft << "\n";
- cerr << " Latency : " << Latency << "\n";
- cerr << " Depth : " << Depth << "\n";
- cerr << " Height : " << Height << "\n";
+ errs() << " # preds left : " << NumPredsLeft << "\n";
+ errs() << " # succs left : " << NumSuccsLeft << "\n";
+ errs() << " Latency : " << Latency << "\n";
+ errs() << " Depth : " << Depth << "\n";
+ errs() << " Height : " << Height << "\n";
if (Preds.size() != 0) {
- cerr << " Predecessors:\n";
+ errs() << " Predecessors:\n";
for (SUnit::const_succ_iterator I = Preds.begin(), E = Preds.end();
I != E; ++I) {
- cerr << " ";
+ errs() << " ";
switch (I->getKind()) {
- case SDep::Data: cerr << "val "; break;
- case SDep::Anti: cerr << "anti"; break;
- case SDep::Output: cerr << "out "; break;
- case SDep::Order: cerr << "ch "; break;
+ case SDep::Data: errs() << "val "; break;
+ case SDep::Anti: errs() << "anti"; break;
+ case SDep::Output: errs() << "out "; break;
+ case SDep::Order: errs() << "ch "; break;
}
- cerr << "#";
- cerr << I->getSUnit() << " - SU(" << I->getSUnit()->NodeNum << ")";
+ errs() << "#";
+ errs() << I->getSUnit() << " - SU(" << I->getSUnit()->NodeNum << ")";
if (I->isArtificial())
- cerr << " *";
- cerr << "\n";
+ errs() << " *";
+ errs() << ": Latency=" << I->getLatency();
+ errs() << "\n";
}
}
if (Succs.size() != 0) {
- cerr << " Successors:\n";
+ errs() << " Successors:\n";
for (SUnit::const_succ_iterator I = Succs.begin(), E = Succs.end();
I != E; ++I) {
- cerr << " ";
+ errs() << " ";
switch (I->getKind()) {
- case SDep::Data: cerr << "val "; break;
- case SDep::Anti: cerr << "anti"; break;
- case SDep::Output: cerr << "out "; break;
- case SDep::Order: cerr << "ch "; break;
+ case SDep::Data: errs() << "val "; break;
+ case SDep::Anti: errs() << "anti"; break;
+ case SDep::Output: errs() << "out "; break;
+ case SDep::Order: errs() << "ch "; break;
}
- cerr << "#";
- cerr << I->getSUnit() << " - SU(" << I->getSUnit()->NodeNum << ")";
+ errs() << "#";
+ errs() << I->getSUnit() << " - SU(" << I->getSUnit()->NodeNum << ")";
if (I->isArtificial())
- cerr << " *";
- cerr << "\n";
+ errs() << " *";
+ errs() << ": Latency=" << I->getLatency();
+ errs() << "\n";
}
}
- cerr << "\n";
+ errs() << "\n";
}
#ifndef NDEBUG
@@ -323,35 +340,35 @@ void ScheduleDAG::VerifySchedule(bool isBottomUp) {
continue;
}
if (!AnyNotSched)
- cerr << "*** Scheduling failed! ***\n";
+ errs() << "*** Scheduling failed! ***\n";
SUnits[i].dump(this);
- cerr << "has not been scheduled!\n";
+ errs() << "has not been scheduled!\n";
AnyNotSched = true;
}
if (SUnits[i].isScheduled &&
(isBottomUp ? SUnits[i].getHeight() : SUnits[i].getHeight()) >
unsigned(INT_MAX)) {
if (!AnyNotSched)
- cerr << "*** Scheduling failed! ***\n";
+ errs() << "*** Scheduling failed! ***\n";
SUnits[i].dump(this);
- cerr << "has an unexpected "
+ errs() << "has an unexpected "
<< (isBottomUp ? "Height" : "Depth") << " value!\n";
AnyNotSched = true;
}
if (isBottomUp) {
if (SUnits[i].NumSuccsLeft != 0) {
if (!AnyNotSched)
- cerr << "*** Scheduling failed! ***\n";
+ errs() << "*** Scheduling failed! ***\n";
SUnits[i].dump(this);
- cerr << "has successors left!\n";
+ errs() << "has successors left!\n";
AnyNotSched = true;
}
} else {
if (SUnits[i].NumPredsLeft != 0) {
if (!AnyNotSched)
- cerr << "*** Scheduling failed! ***\n";
+ errs() << "*** Scheduling failed! ***\n";
SUnits[i].dump(this);
- cerr << "has predecessors left!\n";
+ errs() << "has predecessors left!\n";
AnyNotSched = true;
}
}
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