Print more loop info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115951 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 16 insertions, 0 deletions

diff --git a/lib/CodeGen/SplitKit.cpp b/lib/CodeGen/SplitKit.cpp
index 09f78d0826..7f98bc13a3 100644
--- a/lib/CodeGen/SplitKit.cpp
+++ b/lib/CodeGen/SplitKit.cpp
@@ -886,6 +886,22 @@ void SplitEditor::splitAroundLoop(const MachineLoop *Loop) {
   SplitAnalysis::LoopBlocks Blocks;
   sa_.getLoopBlocks(Loop, Blocks);
 
+  DEBUG({
+    dbgs() << "  splitAroundLoop";
+    for (SplitAnalysis::BlockPtrSet::iterator I = Blocks.Loop.begin(),
+         E = Blocks.Loop.end(); I != E; ++I)
+      dbgs() << " BB#" << (*I)->getNumber();
+    dbgs() << ", preds:";
+    for (SplitAnalysis::BlockPtrSet::iterator I = Blocks.Preds.begin(),
+         E = Blocks.Preds.end(); I != E; ++I)
+      dbgs() << " BB#" << (*I)->getNumber();
+    dbgs() << ", exits:";
+    for (SplitAnalysis::BlockPtrSet::iterator I = Blocks.Exits.begin(),
+         E = Blocks.Exits.end(); I != E; ++I)
+      dbgs() << " BB#" << (*I)->getNumber();
+    dbgs() << '\n';
+  });
+
   // Break critical edges as needed.
   SplitAnalysis::BlockPtrSet CriticalExits;
   sa_.getCriticalExits(Blocks, CriticalExits);