void loop_test1(void) {
    int i;
    volatile char data[10];

    for(i = 0; i < 1; i++)
    {  
        data[i] = 0;
    }
}


void loop_test2(void) {
    int i;
    volatile char data[10];

    i=0;
    {  
        data[i] = 0;
    }
}


====================================

00000164 <loop_test1>:
     164:       e24dd010        sub     sp, sp, #16
     168:       e3a03000        mov     r3, #0
     16c:       e5cd3004        strb    r3, [sp, #4]
     170:       e28dd010        add     sp, sp, #16
     174:       e12fff1e        bx      lr

00000178 <loop_test2>:
     178:       e24dd010        sub     sp, sp, #16
     17c:       e3a03000        mov     r3, #0
     180:       e5cd3004        strb    r3, [sp, #4]
     184:       e28dd010        add     sp, sp, #16
     188:       e12fff1e        bx      lr