Add packed integer add opcodes (v128) to instruction set enum

cranelift/codegen/src/isa/x64/lower.rs

@@ -349,10 +349,12 @@ fn lower_insn_to_regs<C: LowerCtx<I = Inst>>(
             let lhs = input_to_reg(ctx, inputs[0]);
             let rhs = input_to_reg_mem_imm(ctx, inputs[1]);
             let dst = output_to_reg(ctx, outputs[0]);
+            let ty = ty.unwrap();
 
             // TODO For commutative operations (add, mul, and, or, xor), try to commute the
             // operands if one is an immediate.
 
+            println!("Type: {}", ty);
             let is_64 = int_ty_is_64(ty.unwrap());
             let alu_op = match op {
                 Opcode::Iadd | Opcode::IaddIfcout => AluRmiROpcode::Add,