The following shows the code generated from a variant of combine $6$ that uses

eight$-$way loop unrolling and four$-$way parallelism.

$.$ L$152$:

addl $(8$ eax$),$ gecx

addl $4($zeax$),$ zesi

addl $8(8$eax, $8$sedi

addl $12(8$eax

addl $16(8$eax

addl $20(8$eax$),$ zesi

addl $24(8$eax $),8$ edi

addl $28(8$eax

addl $$32,$ reax

addl $$8,8$edx

cmpl $-8(8$ebp$),8$edx

j$1.$L$152$

A$.$ What program variable has being spilled onto the stack?

B$.$ At what location on the stack?

C$.$ Why is this a good choice of which value to spill?