Factor out the code for verifying the work of the scheduler,
extend it a bit, and make use of it in all schedulers, to
ensure consistent checking.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59689 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/ScheduleDAG.cpp b/lib/CodeGen/ScheduleDAG.cpp
index e6a8d13..f651906 100644
--- a/lib/CodeGen/ScheduleDAG.cpp
+++ b/lib/CodeGen/ScheduleDAG.cpp
@@ -208,3 +208,57 @@
}
cerr << "\n";
}
+
+#ifndef NDEBUG
+/// VerifySchedule - Verify that all SUnits were scheduled and that
+/// their state is consistent.
+///
+void ScheduleDAG::VerifySchedule(bool isBottomUp) {
+ bool AnyNotSched = false;
+ unsigned DeadNodes = 0;
+ unsigned Noops = 0;
+ for (unsigned i = 0, e = SUnits.size(); i != e; ++i) {
+ if (!SUnits[i].isScheduled) {
+ if (SUnits[i].NumPreds == 0 && SUnits[i].NumSuccs == 0) {
+ ++DeadNodes;
+ continue;
+ }
+ if (!AnyNotSched)
+ cerr << "*** Scheduling failed! ***\n";
+ SUnits[i].dump(this);
+ cerr << "has not been scheduled!\n";
+ AnyNotSched = true;
+ }
+ if (SUnits[i].isScheduled && SUnits[i].Cycle > (unsigned)INT_MAX) {
+ if (!AnyNotSched)
+ cerr << "*** Scheduling failed! ***\n";
+ SUnits[i].dump(this);
+ cerr << "has an unexpected Cycle value!\n";
+ AnyNotSched = true;
+ }
+ if (isBottomUp) {
+ if (SUnits[i].NumSuccsLeft != 0) {
+ if (!AnyNotSched)
+ cerr << "*** Scheduling failed! ***\n";
+ SUnits[i].dump(this);
+ cerr << "has successors left!\n";
+ AnyNotSched = true;
+ }
+ } else {
+ if (SUnits[i].NumPredsLeft != 0) {
+ if (!AnyNotSched)
+ cerr << "*** Scheduling failed! ***\n";
+ SUnits[i].dump(this);
+ cerr << "has predecessors left!\n";
+ AnyNotSched = true;
+ }
+ }
+ }
+ for (unsigned i = 0, e = Sequence.size(); i != e; ++i)
+ if (!Sequence[i])
+ ++Noops;
+ assert(!AnyNotSched);
+ assert(Sequence.size() + DeadNodes - Noops == SUnits.size() &&
+ "The number of nodes scheduled doesn't match the expected number!");
+}
+#endif