new instrumentation for laf-intel

Writing down notes...

4 byte cmp

t1=reg
qword mem[0]=K
top:
cmp t1[0], byte mem[0]
je break
t1>>8
mem>>8
jmp top

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8 byte cmp (do the loop 2x)

t1=reg
qword mem[0]=K
top:
cmp t1[0], byte mem[0]
je break
t1>>8
mem>>8
jmp top

top2:
cmp t1[0], byte mem[0]
je break
t1>>8
mem>>8
jmp top2
Edited by Anh Nguyen-Tuong