Eliminate an instruction by encoding the constant in the subtraction. Before: 0x5280037a mov w26, #0x1b ; =27 0x6b1a02bb subs w27, w21, w26 0x93407f78 sxtw x24, w27 After: 0x71006ebb subs w27, w21, #0x1b 0x93407f7a sxtw x26, w27
Eliminate an instruction by encoding the constant in the subtraction. Before: 0x5280037a mov w26, #0x1b ; =27 0x6b1a02bb subs w27, w21, w26 0x93407f78 sxtw x24, w27 After: 0x71006ebb subs w27, w21, #0x1b 0x93407f7a sxtw x26, w27