From 9fbb01240448f580f0689fee455c8a19cb44ddde Mon Sep 17 00:00:00 2001 From: Gerolf Hoflehner Date: Thu, 7 Aug 2014 21:49:44 +0000 Subject: [PATCH] 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 --- lib/CodeGen/MachineScheduler.cpp | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/lib/CodeGen/MachineScheduler.cpp b/lib/CodeGen/MachineScheduler.cpp index 5e87514e2f1..7e3c33bb9fb 100644 --- a/lib/CodeGen/MachineScheduler.cpp +++ b/lib/CodeGen/MachineScheduler.cpp @@ -40,6 +40,9 @@ cl::opt ForceTopDown("misched-topdown", cl::Hidden, cl::desc("Force top-down list scheduling")); cl::opt ForceBottomUp("misched-bottomup", cl::Hidden, cl::desc("Force bottom-up list scheduling")); +cl::opt +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. -- 2.34.1