Remove unused variable warning

lib/Target/X86/X86ISelLowering.cpp

Index: lib/Target/X86/X86ISelLowering.cpp
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 8bc1521bdbf9f40e031922b363f0a45005599433..511cea19e224d5860d380dfb62ff7d1dbf5da52b 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -266,6 +266,7 @@ void X86TargetLowering::resetOperationActions() {
     setSchedulingPreference(Sched::RegPressure);
   const X86RegisterInfo *RegInfo =
     static_cast<const X86RegisterInfo*>(TM.getRegisterInfo());
+  (void)RegInfo;                                     // @LOCALMOD
   setStackPointerRegisterToSaveRestore(X86StackPtr); // @LOCALMOD
 
   // Bypass expensive divides on Atom when compiling with O2
@@ -13323,6 +13324,7 @@ X86TargetLowering::LowerDYNAMIC_STACKALLOC(SDValue Op,
 
     const X86RegisterInfo *RegInfo =
       static_cast<const X86RegisterInfo*>(DAG.getTarget().getRegisterInfo());
+    (void)RegInfo;                // @LOCALMOD
     unsigned SPReg = X86StackPtr; // @LOCALMOD
     SDValue SP = DAG.getCopyFromReg(Chain, dl, SPReg, SPTy);
     Chain = SP.getValue(1);