RegAllocFast: Add hint to debug printing

llvm-svn: 356348
diff --git a/llvm/lib/CodeGen/RegAllocFast.cpp b/llvm/lib/CodeGen/RegAllocFast.cpp
index ad080e9..d3e52f9 100644
--- a/llvm/lib/CodeGen/RegAllocFast.cpp
+++ b/llvm/lib/CodeGen/RegAllocFast.cpp
@@ -566,7 +566,8 @@
 
   const TargetRegisterClass &RC = *MRI->getRegClass(VirtReg);
   LLVM_DEBUG(dbgs() << "Search register for " << printReg(VirtReg)
-                    << " in class " << TRI->getRegClassName(&RC) << '\n');
+                    << " in class " << TRI->getRegClassName(&RC)
+                    << " with hint " << printReg(Hint, TRI) << '\n');
 
   // Take hint when possible.
   if (TargetRegisterInfo::isPhysicalRegister(Hint) &&