474         unsigned mask = (1 << size) - 1;
 475         if (_offset < 0 || _offset & mask)
 476           {
 477             i->f(0b00, 25, 24);
 478             i->f(0, 21), i->f(0b00, 11, 10);
 479             i->sf(_offset, 20, 12);
 480           } else {
 481             i->f(0b01, 25, 24);
 482             i->f(_offset >> size, 21, 10);
 483           }
 484       }
 485       break;
 486 
 487     case base_plus_offset_reg:
 488       {
 489         i->f(0b00, 25, 24);
 490         i->f(1, 21);
 491         i->rf(_index, 16);
 492         i->f(_ext.option(), 15, 13);
 493         unsigned size = i->get(31, 30);





 494         if (size == 0) // It's a byte
 495           i->f(_ext.shift() >= 0, 12);
 496         else {
 497           if (_ext.shift() > 0)
 498             assert(_ext.shift() == (int)size, "bad shift");
 499           i->f(_ext.shift() > 0, 12);
 500         }
 501         i->f(0b10, 11, 10);
 502       }
 503       break;
 504 
 505     case pre:
 506       i->f(0b00, 25, 24);
 507       i->f(0, 21), i->f(0b11, 11, 10);
 508       i->sf(_offset, 20, 12);
 509       break;
 510 
 511     case post:
 512       i->f(0b00, 25, 24);
 513       i->f(0, 21), i->f(0b01, 11, 10);

 474         unsigned mask = (1 << size) - 1;
 475         if (_offset < 0 || _offset & mask)
 476           {
 477             i->f(0b00, 25, 24);
 478             i->f(0, 21), i->f(0b00, 11, 10);
 479             i->sf(_offset, 20, 12);
 480           } else {
 481             i->f(0b01, 25, 24);
 482             i->f(_offset >> size, 21, 10);
 483           }
 484       }
 485       break;
 486 
 487     case base_plus_offset_reg:
 488       {
 489         i->f(0b00, 25, 24);
 490         i->f(1, 21);
 491         i->rf(_index, 16);
 492         i->f(_ext.option(), 15, 13);
 493         unsigned size = i->get(31, 30);
 494         if (i->get(26, 26) && i->get(23, 23)) {
 495           // SIMD Q Type - Size = 128 bits
 496           assert(size == 0, "bad size");
 497           size = 0b100;
 498         }
 499         if (size == 0) // It's a byte
 500           i->f(_ext.shift() >= 0, 12);
 501         else {
 502           if (_ext.shift() > 0)
 503             assert(_ext.shift() == (int)size, "bad shift");
 504           i->f(_ext.shift() > 0, 12);
 505         }
 506         i->f(0b10, 11, 10);
 507       }
 508       break;
 509 
 510     case pre:
 511       i->f(0b00, 25, 24);
 512       i->f(0, 21), i->f(0b11, 11, 10);
 513       i->sf(_offset, 20, 12);
 514       break;
 515 
 516     case post:
 517       i->f(0b00, 25, 24);
 518       i->f(0, 21), i->f(0b01, 11, 10);