[NFC][AArch64] Fix unused var in release build

diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
index 5497956..9bbeb15 100644 (file)
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -10461,6 +10461,7 @@ SDValue AArch64TargetLowering::LowerCONCAT_VECTORS(SDValue Op,
 
   if (isTypeLegal(Op.getOperand(0).getValueType())) {
     unsigned NumOperands = Op->getNumOperands();
+    (void)NumOperands;
     assert(NumOperands > 1 && isPowerOf2_32(NumOperands) &&
            "Unexpected number of operands in CONCAT_VECTORS");