GetReg
and
GenCode
: Example 5/10
reserved
w
free
reserved
0,1
2
3-11
12-15
contents
reg.
in memory
nowhere
2
nowhere
a-d
u, v
w
x-z
address
var.
RAT:
AT:
GetReg
:
R3
Instruction:
(4) x:=d+b
Properties:
x, b: live; d: dead
GenCode
:
load R3,d
add
R3,b
34/43