MaybeWriteVInt

int __fastcall sub_1AB46A(_DWORD *a1, unsigned int a2)
{
  unsigned int v2; // r4
  _DWORD *v3; // r5
  int result; // r0
  int v5; // r2
  int v6; // r1
  int v7; // r0
  int v8; // r0
  int v9; // r0
  int v10; // r0
  int v11; // r0
  int v12; // r0
  int v13; // r0
  int v14; // r0
  unsigned int v15; // r0
  int v16; // r0
  int v17; // r0
  int v18; // r0
  int v19; // r1
  int v20; // r1

  v2 = a2;
  v3 = a1;
  sub_1ABF14();
  sub_1AA978((int)v3, 5);
  v3[6] = 0;
  if ( (signed int)v2 <= -1 )
  {
    if ( !(((signed int)(v2 + 63) < 0) ^ __OFADD__(v2, 63)) )
    {
      result = v3[4];
      v3[4] = result + 1;
      *(_BYTE *)(v3[7] + result) = v2 & 0x3F | 0x40;
      return result;
    }
    if ( (signed int)v2 > -8192 )
    {
      v8 = v3[4];
      v3[4] = v8 + 1;
      *(_BYTE *)(v3[7] + v8) = v2 | 0xC0;
      goto LABEL_10;
    }
    if ( (signed int)v2 > -1048576 )
    {
      v10 = v3[4];
      v3[4] = v10 + 1;
      *(_BYTE *)(v3[7] + v10) = v2 | 0xC0;
      goto LABEL_15;
    }
    v16 = v3[4];
    v3[4] = v16 + 1;
    *(_BYTE *)(v3[7] + v16) = v2 | 0xC0;
    v17 = v3[4];
    v3[4] = v17 + 1;
    *(_BYTE *)(v3[7] + v17) = (v2 >> 6) | 0x80;
    v18 = v3[4];
    v3[4] = v18 + 1;
    *(_BYTE *)(v3[7] + v18) = (v2 >> 13) | 0x80;
    v15 = v2 >> 20;
    if ( (signed int)v2 <= -134217728 )
    {
LABEL_20:
      v20 = v3[4];
      v3[4] = v20 + 1;
      *(_BYTE *)(v3[7] + v20) = v15 | 0x80;
      result = v3[4];
      v3[4] = result + 1;
      v6 = v3[7];
      v5 = (v2 >> 27) & 0xF;
      goto LABEL_21;
    }
LABEL_19:
    v19 = v3[4];
    result = v15 & 0x7F;
    v3[4] = v19 + 1;
    *(_BYTE *)(v3[7] + v19) = result;
    return result;
  }
  if ( (signed int)v2 > 63 )
  {
    if ( (signed int)v2 < 0x2000 )
    {
      v7 = v3[4];
      v3[4] = v7 + 1;
      *(_BYTE *)(v3[7] + v7) = v2 & 0x3F | 0x80;
LABEL_10:
      result = v3[4];
      v3[4] = result + 1;
      v6 = v3[7];
      v5 = (v2 >> 6) & 0x7F;
      goto LABEL_21;
    }
    if ( (signed int)v2 < 0x100000 )
    {
      v9 = v3[4];
      v3[4] = v9 + 1;
      *(_BYTE *)(v3[7] + v9) = v2 & 0x3F | 0x80;
LABEL_15:
      v11 = v3[4];
      v3[4] = v11 + 1;
      *(_BYTE *)(v3[7] + v11) = (v2 >> 6) | 0x80;
      result = v3[4];
      v3[4] = result + 1;
      v6 = v3[7];
      v5 = (v2 >> 13) & 0x7F;
      goto LABEL_21;
    }
    v12 = v3[4];
    v3[4] = v12 + 1;
    *(_BYTE *)(v3[7] + v12) = v2 & 0x3F | 0x80;
    v13 = v3[4];
    v3[4] = v13 + 1;
    *(_BYTE *)(v3[7] + v13) = (v2 >> 6) | 0x80;
    v14 = v3[4];
    v3[4] = v14 + 1;
    *(_BYTE *)(v3[7] + v14) = (v2 >> 13) | 0x80;
    v15 = v2 >> 20;
    if ( (signed int)v2 >= 0x8000000 )
      goto LABEL_20;
    goto LABEL_19;
  }
  result = v3[4];
  LOBYTE(v5) = v2 & 0x3F;
  v3[4] = result + 1;
  v6 = v3[7];
LABEL_21:
  *(_BYTE *)(v6 + result) = v5;
  return result;
}