diff --git a/lib/CodeGen/RegAllocGreedy.cpp b/lib/CodeGen/RegAllocGreedy.cpp
index b527b9f..e88016f 100644
--- a/lib/CodeGen/RegAllocGreedy.cpp
+++ b/lib/CodeGen/RegAllocGreedy.cpp
@@ -230,8 +230,10 @@
   SmallVector<unsigned, 8> PhysRegSpillCands, ReassignCands;
 
   // Check for an available register in this class.
-  const TargetRegisterClass *TRC = MRI->getRegClass(VirtReg.reg);
-  DEBUG(dbgs() << "RegClass: " << TRC->getName() << ' ');
+  DEBUG({
+      const TargetRegisterClass *TRC = MRI->getRegClass(VirtReg.reg);
+      dbgs() << "RegClass: " << TRC->getName() << ' ');
+    });
 
   AllocationOrder Order(VirtReg.reg, *VRM, ReservedRegs);
   while (unsigned PhysReg = Order.next()) {
@@ -324,4 +326,3 @@
 
   return true;
 }
-