gistfile1.txt

  00000000000001BC: D2802009  mov         x9,#0x100
  00000000000001C0: F2C00809  movk        x9,#0x40,lsl #0x20
  00000000000001C4: F90003E9  str         x9,[sp]
  00000000000001C8: D2800209  mov         x9,#0x10
  00000000000001CC: F2C00089  movk        x9,#4,lsl #0x20
  00000000000001D0: F90007E9  str         x9,[sp,#8]
  00000000000001D4: 58000869  ldr         x9,$LN356
  00000000000001D8: F9000BE9  str         x9,[sp,#0x10]
  00000000000001DC: 58000869  ldr         x9,$LN357
  00000000000001E0: F9000FE9  str         x9,[sp,#0x18]
  00000000000001E4: 52806009  mov         w9,#0x300
  00000000000001E8: 72A120C9  movk        w9,#0x906,lsl #0x10
  00000000000001EC: AD406FFE  ldp         q30,q27,[sp]
  00000000000001F0: 4E040D3F  dup         v31.4s,w9
  
which is generated from three constants:
  
    Vec128_S16(1<<8, 0, 1<<6, 0, 1<<4, 0, 1<<2, 0) (ends up in v30)
    Vec128_U8(1,1,1,1, 5,5,5,5, 9,9,9,9, 13,13,13,13) (ends up in v27)
    Vec128_U8(0,3,6,9, 0,3,6,9, 0,3,6,9, 0,3,6,9) (ends up in v31)
    
and could be something like this instead:
 
   adrp x9, $CPOOL
   add x9, x9, :lo12:$CPOOL
   ldp q30, q27, [x9]
   ldr q31, [x9, #0x20]