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goluabhinan
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Compiler Design
Sep 16, 2018
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Three address codes can be implemented by
(a) indirect triples (b) direct triples
(c) quadruples (d) none of the above
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goluabhinan
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Three address codes can be implemented by Quadruples, Triples and Indirect Triples. So answer is (a) and (c).
deepakkumar7
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Jan 8, 2019
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Ankita87077
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Compiler Design (register allocation)
In such questions, In which it is asked " minimum number of registers required for executing this three address code without spilling", can we apply code motion optimization or not? As in a question of made easy test series : T1 = a; ... = R1} So,which one is correct, made easy one or second one applying code motion? Can anybody please clarify this.
Ankita87077
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Lakshman Bhaiya
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Sep 7, 2019
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Ullman (Compiler Design) Edition 2 Exercise 6.5 Question 2 (Page No. 399)
As in Ada, suppose that each expression must have a unique type, but that from a subexpression, by itself, all we can deduce is a set of possible types. That is, the application of function ... of the overall expression is determined, proceeds top-down to determine attribute $unique$ for the type of each subexpression.
Lakshman Bhaiya
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Lakshman Bhaiya
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Ullman (Compiler Design) Edition 2 Exercise 6.5 Question 1 (Page No. 398)
Assuming that function $widen$ in Fig. $6.26$ can handle any of the types in the hierarchy of Fig. $6.25(a)$, translate the expressions below. Assume that c and d are characters, $s$ and $t$ are short integers, $i$ and $j$ are integers, and $x$ is a float. $x=s+c$ $i=s+c$ $x=(s+c)\ast(t+d)$
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