SparcFrameLowering.cpp: Mark verifyLeafProcRegUse() as UNUSED. [-Wunused-function]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182850 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Sparc/SparcFrameLowering.cpp b/lib/Target/Sparc/SparcFrameLowering.cpp
index 3832c10..2e52298 100644
--- a/lib/Target/Sparc/SparcFrameLowering.cpp
+++ b/lib/Target/Sparc/SparcFrameLowering.cpp
@@ -136,7 +136,7 @@
 }
 
 
-static bool verifyLeafProcRegUse(MachineRegisterInfo *MRI)
+static bool LLVM_ATTRIBUTE_UNUSED verifyLeafProcRegUse(MachineRegisterInfo *MRI)
 {
 
   for (unsigned reg = SP::I0; reg <= SP::I7; ++reg)