Print out register class of spilled register.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117761 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/InlineSpiller.cpp b/lib/CodeGen/InlineSpiller.cpp
index 9a4da6c..0bae9df 100644
--- a/lib/CodeGen/InlineSpiller.cpp
+++ b/lib/CodeGen/InlineSpiller.cpp
@@ -352,10 +352,12 @@
 
 void InlineSpiller::spill(LiveRangeEdit &edit) {
   edit_ = &edit;
-  DEBUG(dbgs() << "Inline spilling " << edit.getParent() << "\n");
+  assert(!edit.getParent().isStackSlot() && "Trying to spill a stack slot.");
+  DEBUG(dbgs() << "Inline spilling "
+               << mri_.getRegClass(edit.getReg())->getName()
+               << ':' << edit.getParent() << "\n");
   assert(edit.getParent().isSpillable() &&
          "Attempting to spill already spilled value.");
-  assert(!edit.getParent().isStackSlot() && "Trying to spill a stack slot.");
 
   if (split())
     return;