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Debugging Utility - optional ability for dumping critical path length
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215153 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -40,6 +40,9 @@ cl::opt<bool> ForceTopDown("misched-topdown", cl::Hidden,
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cl::desc("Force top-down list scheduling"));
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cl::opt<bool> ForceBottomUp("misched-bottomup", cl::Hidden,
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cl::desc("Force bottom-up list scheduling"));
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cl::opt<bool>
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DumpCriticalPathLength("misched-dcpl", cl::Hidden,
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cl::desc("Print critical path length to stdout"));
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}
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#ifndef NDEBUG
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@ -451,6 +454,11 @@ void MachineSchedulerBase::scheduleRegions(ScheduleDAGInstrs &Scheduler) {
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else dbgs() << "End";
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dbgs() << " RegionInstrs: " << NumRegionInstrs
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<< " Remaining: " << RemainingInstrs << "\n");
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if (DumpCriticalPathLength) {
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errs() << MF->getName();
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errs() << ":BB# " << MBB->getNumber();
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errs() << " " << MBB->getName() << " \n";
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}
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// Schedule a region: possibly reorder instructions.
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// This invalidates 'RegionEnd' and 'I'.
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@ -2462,7 +2470,10 @@ void GenericScheduler::registerRoots() {
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if ((*I)->getDepth() > Rem.CriticalPath)
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Rem.CriticalPath = (*I)->getDepth();
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}
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DEBUG(dbgs() << "Critical Path: " << Rem.CriticalPath << '\n');
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DEBUG(dbgs() << "Critical Path(GS-RR ): " << Rem.CriticalPath << '\n');
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if (DumpCriticalPathLength) {
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errs() << "Critical Path(GS-RR ): " << Rem.CriticalPath << " \n";
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}
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if (EnableCyclicPath) {
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Rem.CyclicCritPath = DAG->computeCyclicCriticalPath();
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@ -2905,7 +2916,10 @@ void PostGenericScheduler::registerRoots() {
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if ((*I)->getDepth() > Rem.CriticalPath)
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Rem.CriticalPath = (*I)->getDepth();
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}
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DEBUG(dbgs() << "Critical Path: " << Rem.CriticalPath << '\n');
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DEBUG(dbgs() << "Critical Path: (PGS-RR) " << Rem.CriticalPath << '\n');
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if (DumpCriticalPathLength) {
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errs() << "Critical Path(PGS-RR ): " << Rem.CriticalPath << " \n";
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}
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}
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/// Apply a set of heursitics to a new candidate for PostRA scheduling.
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