GetReg
and
GenCode
: Example 4/10
reserved
u
v
free
Reserved
0,1
2
3
3-11
12-15
contents
reg.
in memory
2
3
nowhere
a-d
u
v
w-z
address
var.
RAT:
AT:
GetReg
:
R2
Instruction:
(3) w:=u+v
Properties:
w: live; u, v: dead
GenCode
:
add R2,R3
33/43