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
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