Can 'nop' instruction save execute time on AArch64?

Question

 .text
 .globl asm_f1
 .globl asm_f2
 .globl asm_f3
 .globl asm_f4
 .globl asm_f5



 asm_f1:
   mov x0, #1
   movk x0, #1, lsl #16
   movk x0, #1, lsl #32
   ret