ScheduleDAG: Cleanup dumping code; NFC

- Instead of having both `SUnit::dump(ScheduleDAG*)` and
  `ScheduleDAG::dumpNode(ScheduleDAG*)`, just keep the latter around.
- Add `ScheduleDAG::dump()` and avoid code duplication in several
  places. Implement it for different ScheduleDAG variants.
- Add `ScheduleDAG::dumpNodeName()` in favor of the `SUnit::print()`
  functions. They were only ever used for debug dumping and putting the
  function into ScheduleDAG is consistent with the `dumpNode()` change.

llvm-svn: 342520

1 files changed, 1 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/ScoreboardHazardRecognizer.cpp b/llvm/lib/CodeGen/ScoreboardHazardRecognizer.cpp
index b8bfe69a76e..4301372179b 100644
--- a/llvm/lib/CodeGen/ScoreboardHazardRecognizer.cpp
+++ b/llvm/lib/CodeGen/ScoreboardHazardRecognizer.cpp
@@ -157,8 +157,7 @@ ScoreboardHazardRecognizer::getHazardType(SUnit *SU, int Stalls) {
 
       if (!freeUnits) {
         LLVM_DEBUG(dbgs() << "*** Hazard in cycle +" << StageCycle << ", ");
-        LLVM_DEBUG(dbgs() << "SU(" << SU->NodeNum << "): ");
-        LLVM_DEBUG(DAG->dumpNode(SU));
+        LLVM_DEBUG(DAG->dumpNode(*SU));
         return Hazard;
       }
     }