Chapter 7: Intermediate Code Generation

1. Three-Address Code

What do you mean by three-address code? What is the implementation method of three-address code? Describe with an example.[2020, 2018, 2014, 2011, 2009]
Or, What do you mean by three-address code? Describe with an example.[2013]
Or, Explain the three-address code with an example.[2017]

2. Machine Independent Intermediate Code

What are the advantages of machine-independent intermediate code?[2012, 2009]
Or, What are the benefits of machine-independent intermediate code?[2019]

3. Quadruples vs. Triples

Write down the advantages and disadvantages of quadruples over triples.[2015]

4. Simplifications

Translate the arithmetic expression [a + a^ * (b - c)] + [(b - c)^ * d] into:

(i) Three-address code

(ii) Quadruples

(iii) Triples

[2016, 2010]
Write quadruples, triples, and indirect triples for the expression (a + b) + (c + d) - (a + b + c).

[2015]

5. Code Generation

The assignment d := (a - b) + (a - c) + (a - c) might be translated into the following three-address code sequence:
```
t := a - b
u := a - c
v := t + u
d := v + u
```
- With d live at the end, what are the code sequences for the above three-address code using the code generation algorithm?[2014]

6. Target Code Cost

Prepare the total cost of the following target code:[2017]
```
MOV a, R0
ADD b, R0
MOV c, R0
ADD R0, R1
MOV R1, X
```

7. Expression Translation

What do you mean by three-address code? Translate the following arithmetic expression a := b^ * -c + b^ * -c into:(i) Quadruples(ii) Triples(iii) Indirect Triples[2021, 2019]

This format organizes the questions into clear sections for better navigation and understanding. Let me know if you need any further refinements!