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BCSE307L Compiler Design (Theory) Fall 2025-26 (A2+TA2) [VL2025260101611]
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Which statement correctly describes the use of the DAG representation for code generation from a Basic Block?
By using the approximate formula for usage count, determine the usage count/unit of cost for variable A in Block2 of the following data flow graph.
Consider that there are two loops — L₁ (outer loop) and L₂ (inner loop).Register allocation for variable ‘a’ is to be performed to some register.
If ‘a’ is allocated in L₁ but not allocated in L₂, then which of the following code sequences correctly represents the register assignment for variable ‘a’— at the entrance to L₂ and while leaving L₂?
By using the approximate formula for usage count, determine the usage count/unit of cost for variable A in Block2 of the following data flow graph.
Identify the correct data-flow equation for data flow analysis from the options below:
Consider the following code snippet:
n=10;for (i = 0; i <= n+1; i++) { a[i] = 2*i;
n=n-rand();}Which of the following is the most relevant and optimized technique(s) that can be applied to improve the above code?
Consider the following code snippet:n = 20;for (i = 0; i <= n - 1; i++) { a[i] = i;}Which of the following is the most relevant and optimized technique(s) that can be applied to improve the above code?
Identify the Label (t3) from the following DAG representation using the labeling algorithm.
Identify the Label (t4) from the following DAG representation using the labeling algorithm.
Consider that there are two loops — L₁ (outer loop) and L₂ (inner loop).Register allocation for variable ‘a’ is to be performed to some register.
If ‘a’ is allocated in L₁ but not allocated in L₂, then which of the following code sequences correctly represents the register assignment for variable ‘a’— at the entrance to L₂ and while leaving L₂?