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Debugging Utility - optional ability for dumping critical path length

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215153 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Gerolf Hoflehner 2014-08-07 21:49:44 +00:00
parent e4fa341dde
commit 9fbb012404
1 changed files with 16 additions and 2 deletions
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18
lib/CodeGen/MachineScheduler.cpp
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@ -40,6 +40,9 @@ cl::opt<bool> ForceTopDown("misched-topdown", cl::Hidden,
cl::desc("Force top-down list scheduling"));
cl::opt<bool> ForceBottomUp("misched-bottomup", cl::Hidden,
cl::desc("Force bottom-up list scheduling"));
cl::opt<bool>
DumpCriticalPathLength("misched-dcpl", cl::Hidden,
cl::desc("Print critical path length to stdout"));
}
#ifndef NDEBUG
@ -451,6 +454,11 @@ void MachineSchedulerBase::scheduleRegions(ScheduleDAGInstrs &Scheduler) {
else dbgs() << "End";
dbgs() << " RegionInstrs: " << NumRegionInstrs
<< " Remaining: " << RemainingInstrs << "\n");
if (DumpCriticalPathLength) {
errs() << MF->getName();
errs() << ":BB# " << MBB->getNumber();
errs() << " " << MBB->getName() << " \n";
}
// Schedule a region: possibly reorder instructions.
// This invalidates 'RegionEnd' and 'I'.
@ -2462,7 +2470,10 @@ void GenericScheduler::registerRoots() {
if ((*I)->getDepth() > Rem.CriticalPath)
Rem.CriticalPath = (*I)->getDepth();
}
DEBUG(dbgs() << "Critical Path: " << Rem.CriticalPath << '\n');
DEBUG(dbgs() << "Critical Path(GS-RR ): " << Rem.CriticalPath << '\n');
if (DumpCriticalPathLength) {
errs() << "Critical Path(GS-RR ): " << Rem.CriticalPath << " \n";
}
if (EnableCyclicPath) {
Rem.CyclicCritPath = DAG->computeCyclicCriticalPath();
@ -2905,7 +2916,10 @@ void PostGenericScheduler::registerRoots() {
if ((*I)->getDepth() > Rem.CriticalPath)
Rem.CriticalPath = (*I)->getDepth();
}
DEBUG(dbgs() << "Critical Path: " << Rem.CriticalPath << '\n');
DEBUG(dbgs() << "Critical Path: (PGS-RR) " << Rem.CriticalPath << '\n');
if (DumpCriticalPathLength) {
errs() << "Critical Path(PGS-RR ): " << Rem.CriticalPath << " \n";
}
}
/// Apply a set of heursitics to a new candidate for PostRA scheduling.