diff --git a/lib/Target/Mips/MipsDelaySlotFiller.cpp b/lib/Target/Mips/MipsDelaySlotFiller.cpp
index dbcfc19d88a..6cc6a4d0de1 100644
--- a/lib/Target/Mips/MipsDelaySlotFiller.cpp
+++ b/lib/Target/Mips/MipsDelaySlotFiller.cpp
@@ -27,6 +27,8 @@
 using namespace llvm;
 
 STATISTIC(FilledSlots, "Number of delay slots filled");
+STATISTIC(UsefulSlots, "Number of delay slots filled with instructions that"
+                       "are not NOP.");
 
 static cl::opt<bool> EnableDelaySlotFiller(
   "enable-mips-delay-filler",