Filling BBT: Example 2/8
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N
N
N
N
N
N
N
N
N
N
L
L
L
L
D
D
D
D
D
D
a
b
c
d
u
v
w
x
y
z
next use
status
var
L – live
D – dead
N – none
ST - line (7):
[1]
[2]
[2]
[3]
[3]
[3]
program
variables
temporary
variables