MachineScheduler: Dump EntrySU/ExitSU if possible

llvm-svn: 286653

1 files changed, 12 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/MachineScheduler.cpp b/llvm/lib/CodeGen/MachineScheduler.cpp
index 51ceed350d6..afef8ebb773 100644
--- a/llvm/lib/CodeGen/MachineScheduler.cpp
+++ b/llvm/lib/CodeGen/MachineScheduler.cpp
@@ -689,8 +689,14 @@ void ScheduleDAGMI::schedule() {
   // This may initialize a DFSResult to be used for queue priority.
   SchedImpl->initialize(this);
 
-  DEBUG(for (unsigned su = 0, e = SUnits.size(); su != e; ++su)
-          SUnits[su].dumpAll(this));
+  DEBUG(
+    if (EntrySU.getInstr() != nullptr)
+      EntrySU.dumpAll(this);
+    for (unsigned su = 0, e = SUnits.size(); su != e; ++su)
+      SUnits[su].dumpAll(this);
+    if (ExitSU.getInstr() != nullptr)
+      ExitSU.dumpAll(this);
+  );
   if (ViewMISchedDAGs) viewGraph();
 
   // Initialize ready queues now that the DAG and priority data are finalized.
@@ -1084,6 +1090,8 @@ void ScheduleDAGMILive::schedule() {
   SchedImpl->initialize(this);
 
   DEBUG(
+    if (EntrySU.getInstr() != nullptr)
+      EntrySU.dumpAll(this);
     for (const SUnit &SU : SUnits) {
       SU.dumpAll(this);
       if (ShouldTrackPressure) {
@@ -1092,6 +1100,8 @@ void ScheduleDAGMILive::schedule() {
       }
       dbgs() << '\n';
     }
+    if (ExitSU.getInstr() != nullptr)
+      ExitSU.dumpAll(this);
   );
   if (ViewMISchedDAGs) viewGraph();