From 04ce06dc4c9dff4ff7a8b97079e3cbb7b60da3ab Mon Sep 17 00:00:00 2001
From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Fri, 22 Jun 2012 19:51:41 +0000
Subject: [PATCH] Fix a crash in --debug code.

Don't try to print out the live range of a physreg.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159021 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/RegisterCoalescer.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/CodeGen/RegisterCoalescer.cpp b/lib/CodeGen/RegisterCoalescer.cpp
index 7ef525d9f3c..19b6ffcb51b 100644
--- a/lib/CodeGen/RegisterCoalescer.cpp
+++ b/lib/CodeGen/RegisterCoalescer.cpp
@@ -1053,8 +1053,12 @@ bool RegisterCoalescer::joinCopy(MachineInstr *CopyMI, bool &Again) {
   // Update regalloc hint.
   TRI->UpdateRegAllocHint(CP.getSrcReg(), CP.getDstReg(), *MF);
 
-  DEBUG(dbgs() << "\tJoined. Result = " << PrintReg(CP.getDstReg(), TRI)
-               << ' ' << LIS->getInterval(CP.getDstReg()) << '\n');
+  DEBUG({
+    dbgs() << "\tJoined. Result = " << PrintReg(CP.getDstReg(), TRI);
+    if (!CP.isPhys())
+      dbgs() << LIS->getInterval(CP.getDstReg());
+     dbgs() << '\n';
+  });
 
   ++numJoins;
   return true;