Write an arm assembly code to count leading one

The following is sample answer code , you need to write another answer not to use CMP (I need to have new answer using only 1. LDR[*] 2. MOV[*] 3. B[*] 4. ADC[*] 5. LSR[*]

DO NOT USE CMP ) EXPORT __main __main LDR R0, =0x2345ABCD MOV R1, #0

loop CMP R0, #0 BEQ stop CLZ R2, R0 ADD R2, #1 ADD R1, #1 LSL R0, R2 BNE loop

stop B stop END