GCC for MIPS emits assembly label(?) with "= ."

Heyho everyone,

I'm using the GCC 9.3.0 to generate Assembly files for MIPS. When looking at those assembly lines I noticed something that looks like a jump label - but it is never referenced.

_ZN10FileSystem8AutoLoad9loadAsyncERKNS0_8FileListE:    .frame  $sp,40,$31      # vars= 0, regs= 5/0, args= 16, gp= 0    .mask   0x800f0000,-4    .fmask  0x00000000,0    .set    noreorder    .set    nomacro    addiu   $sp,$sp,-40    sw  $18,28($sp)    lui $18,%hi(_ZN10FileSystemL12curLoadStateE)    sw  $16,20($sp)    lw  $16,%lo(_ZN10FileSystemL12curLoadStateE)($18)    sw  $19,32($sp)    sw  $17,24($sp)    lui $19,%hi(_ZN10FileSystem8AutoLoadL14curListElementE)    move    $17,$4    li  $4,2            # 0x2    lw  $3,0($17)    lw  $2,%lo(_ZN10FileSystem8AutoLoadL14curListElementE)($19)    bne $16,$4,$L44    sw  $31,36($sp)$L36 = .    addiu   $2,$2,1$L48:    sll $4,$2,2    addu    $3,$3,$4    lw  $16,0($3)    sw  $0,%lo(_ZN10FileSystemL12curLoadStateE)($18)    sw  $2,%lo(_ZN10FileSystem8AutoLoadL14curListElementE)($19)    sltu    $16,$16,1$L35:    lw  $31,36($sp)    lw  $19,32($sp)    lw  $18,28($sp)    lw  $17,24($sp)    move    $2,$16    lw  $16,20($sp)    jr  $31    addiu   $sp,$sp,40

What does "$L36 = ." mean? Is it a jump label that was optimized out?