GATE CSE 2014 Set 3 | Question: 17

Question

One of the purposes of using intermediate code in compilers is to

• A. make parsing and semantic analysis simpler.
• B. improve error recovery and error reporting.
• C. increase the chances of reusing the machine-independent code optimizer in other compilers.
• D. improve the register allocation.

Comments

https://gateoverflow.in/2453/gate1994-1-12

---

why doesnt it improve register allocation? we allocate registers on the basis of 3 address code only. so why not d).

---

@Rhythm

Nope. Register Allocation is part of Code Generation.

Answer 1

C. that is the actual use of intermediate code generator in a compiler.

Comments

relocattable address is also a factor???

---

What does it mean by "code optimizer in other compilers." in question

---

it mean front end of that compiler can be used with back end of other compiler where we can also perform code optimization and code generation for actual code geeration

---

when we generate intermediate code it is independent of machine so we can easily implement the same code in different machines without performing the analysis phase of compiler again and again.

Answer 2

Intermediate code is machine independent code which makes it easy to retarget the compiler
to generate code for newer and different processors.

Answer 3

Ans: C  intermediate code enhance the portability