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[AMDGPU] Add VerifyScheduling support. 

Summary:
This is cut and pasted from the corresponding GenericScheduler
functions.

Reviewers: arsenm, atrick, tstellar, vpykhtin

Subscribers: MatzeB, kzhuravl, jvesely, wdng, nhaehnle, yaxunl, dstuttard, tpr, t-tye, hiraditya, javed.absar, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68264

llvm-svn: 373346
This commit is contained in:
Jay Foad 2019-10-01 15:45:47 +00:00
parent 362055d1fa
commit e536800022
3 changed files with 23 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
llvm/include/llvm/CodeGen/MachineScheduler.h
View File

@ -100,6 +100,7 @@ namespace llvm {
extern cl::opt<bool> ForceTopDown;
extern cl::opt<bool> ForceBottomUp;
extern cl::opt<bool> VerifyScheduling;
class LiveIntervals;
class MachineDominatorTree;

7
llvm/lib/CodeGen/MachineScheduler.cpp
View File

@ -82,6 +82,10 @@ cl::opt<bool>
DumpCriticalPathLength("misched-dcpl", cl::Hidden,
cl::desc("Print critical path length to stdout"));
cl::opt<bool> VerifyScheduling(
"verify-misched", cl::Hidden,
cl::desc("Verify machine instrs before and after machine scheduling"));
} // end namespace llvm
#ifndef NDEBUG
@ -122,9 +126,6 @@ static cl::opt<bool> EnableMemOpCluster("misched-cluster", cl::Hidden,
cl::desc("Enable memop clustering."),
cl::init(true));
static cl::opt<bool> VerifyScheduling("verify-misched", cl::Hidden,
cl::desc("Verify machine instrs before and after machine scheduling"));
// DAG subtrees must have at least this many nodes.
static const unsigned MinSubtreeSize = 8;

18
llvm/lib/Target/AMDGPU/GCNSchedStrategy.cpp
View File

@ -196,6 +196,15 @@ SUnit *GCNMaxOccupancySchedStrategy::pickNodeBidirectional(bool &IsTopNode) {
assert(BotCand.Reason != NoCand && "failed to find the first candidate");
} else {
LLVM_DEBUG(traceCandidate(BotCand));
#ifndef NDEBUG
if (VerifyScheduling) {
SchedCandidate TCand;
TCand.reset(CandPolicy());
pickNodeFromQueue(Bot, BotPolicy, DAG->getBotRPTracker(), TCand);
assert(TCand.SU == BotCand.SU &&
"Last pick result should correspond to re-picking right now");
}
#endif
}
// Check if the top Q has a better candidate.
@ -207,6 +216,15 @@ SUnit *GCNMaxOccupancySchedStrategy::pickNodeBidirectional(bool &IsTopNode) {
assert(TopCand.Reason != NoCand && "failed to find the first candidate");
} else {
LLVM_DEBUG(traceCandidate(TopCand));
#ifndef NDEBUG
if (VerifyScheduling) {
SchedCandidate TCand;
TCand.reset(CandPolicy());
pickNodeFromQueue(Top, TopPolicy, DAG->getTopRPTracker(), TCand);
assert(TCand.SU == TopCand.SU &&
"Last pick result should correspond to re-picking right now");
}
#endif
}
// Pick best from BotCand and TopCand.