Symbol Table (ST)
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(10)
(20)
none
live
live
dead
a
b
pos
next use
status
variable
Extetion of a ST:
Status:
Textové pole: …
…
Textové pole: …
…
Textové pole: …
…
live
dead
Next use:
none(i)
• i = number of a line
Initial assumption:
• All programmer variables:
• All temporary variables:
• All variables:
Status: live
Status: dead
Next use: none