From 927793b6a165148af6d079ac03f97d13d296ff0d Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Fri, 27 Feb 2009 00:05:54 +0000
Subject: [PATCH] Make LoopInfo::print() identify header, exit, and latch
 blocks, and print the loop depth.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65593 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/Analysis/LoopInfo.h | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/include/llvm/Analysis/LoopInfo.h b/include/llvm/Analysis/LoopInfo.h
index 93bfcad1bc7..01e5fa96fcc 100644
--- a/include/llvm/Analysis/LoopInfo.h
+++ b/include/llvm/Analysis/LoopInfo.h
@@ -592,11 +592,16 @@ public:
   }
 
   void print(std::ostream &OS, unsigned Depth = 0) const {
-    OS << std::string(Depth*2, ' ') << "Loop Containing: ";
+    OS << std::string(Depth*2, ' ') << "Loop at depth " << getLoopDepth()
+       << " containing: ";
 
     for (unsigned i = 0; i < getBlocks().size(); ++i) {
       if (i) OS << ",";
-      WriteAsOperand(OS, getBlocks()[i], false);
+      BlockT *BB = getBlocks()[i];
+      WriteAsOperand(OS, BB, false);
+      if (BB == getHeader())    OS << "<header>";
+      if (BB == getLoopLatch()) OS << "<latch>";
+      if (isLoopExit(BB))       OS << "<exit>";
     }
     OS << "\n";