[GlobalISel] Fix -Wunused-variable in -DLLVM_ENABLE_ASSERTIONS=off builds

diff --git a/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp b/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
index 8abee20..084ff1c 100644 (file)
--- a/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
@@ -657,6 +657,8 @@ MachineInstrBuilder MachineIRBuilder::buildShuffleVector(const DstOp &Res,
   assert(Src1Ty.getNumElements() + Src2Ty.getNumElements() >= Mask.size());
   assert(DstTy.getElementType() == Src1Ty.getElementType() &&
          DstTy.getElementType() == Src2Ty.getElementType());
+  (void)Src1Ty;
+  (void)Src2Ty;
   ArrayRef<int> MaskAlloc = getMF().allocateShuffleMask(Mask);
   return buildInstr(TargetOpcode::G_SHUFFLE_VECTOR, {DstTy}, {Src1, Src2})
       .addShuffleMask(MaskAlloc);