Printed Pages-3

EC5603

lowing Paper ID and Roll No. to be filled in yourAnswer Book

B.Tech. (sEM. VD THEORY EXAMTNATTON 20 l 3- 1 4

COMPILERDESIGN Time

:3 Hours

Note :-

(1)

Total Marl
:

100

Atternpt all questions. Each question carries equal marks.

(2) l.

Be precise and to the point while answering.

Attempt any four parts

:

(5x4=20)

(a) Describe the synthesis-analysis model ofcompiler. (b) What are different compiler tools ? Discuss any two. (c) Remove left recursion from the grammar E-+E(r)lT T+T(F)lF F-+id

(d)

What do you mean by ambiguous grammar ? Show that the follorving grammar is ambiguous.

S+aSbSlbSaSle (e) Define boot-strapping with the help of an example.

(0 2.

Explain the term token, lexeme and Pattern.

Attempt any two parts

(a)

:

(10x2=20)

What do you mean by operator precedence grammar ?

ECS60,/DQJ-2t7s2

[Turn Over

Compute the operator precedence table for the given grammar.

E-+E+TlT

T+T*FlF F+(E)lid

(b) Differentiate

between Recursive Decent Parsing and Predietive Parsing. Derive the LL (l) parsing table for the following grammar bexpr

+ bexpr or bterm I bterm

bterm -+ bterm and bfactor I bfactor bfactor -+ not bfactor | (bexpr) | true I false

(c)

Showthatthe following grammar

S+AalbAclBclbBa A-+d il

B+d is L R

3.

(l)

but not LALR

Attempt any two parts

(l).

:

(10x2=20)

(a) Define Syntax Directed Translation. Construct annonated parse tree for the expression

(4 * 7 + l)

an

+ 2,

using the simple desk calculator grammar.

(b) What are different ways to write three address code ? Write the three address code forthe following code segment

WhileA
ifA=lthenC=g+l else while A < = D do

ECS603IDQJan52

A= A+

2.

:

(c)

Define backpatching and semantic rules for boolean expression. Derive the three address code for the following expression

P
4.

Attempt any two parts

(10x2=20)

:

(a)

What is the role of synrbol table ? Discuss different data structures used for symbol table.

(b)

What are lexical phase errors, syntactic phase erors and semantic phase errors ? Explain with suitable example.

(c)

Why run-time storage management is required ? How simple stack implementation is implemented ?

5.

Attempt any two parts

(a)

(10x2=20)

:

What is DAG ? How DAG is created from three address code ? Write algorithm for it and explain it with a relevant example.

(b) What are different issues in code optimization ? Explain it with properexample.

(c)

Write short notes (any two)

:

(r)

GlobalDataFlowAnalysis

(iD

Loopunrolling

(iiD

LoopJamming.

ECS603/DQJ-21752

15625

UPTU B.Tech Compiler Design - ECS 603 Sem 6_2013-14.pdf ...

UPTU B.Tech Compiler Design - ECS 603 Sem 6_2013-14.pdf. UPTU B.Tech Compiler Design - ECS 603 Sem 6_2013-14.pdf. Open. Extract. Open with. Sign In.

1MB Sizes 18 Downloads 363 Views

Recommend Documents

UPTU B.Tech Compiler Design ECS603 Sem 6_2014-15.pdf ...
G) Context free grammar. G) Yacc parser generator. (d) Check whether left recursion exists for the following. griurunar: S -+ Aalb. A-+AclSdle. 1r060sl I I Contd.

UPTU B.Tech Distributed Systems ECS-701 Sem 7_2011-12.pdf ...
Whoops! There was a problem loading more pages. Retrying... Whoops! There was a problem previewing this document. Retrying... Download. Connect more ...

UPTU B.Tech Operating System ECS-501 Sem 5_2014-15.pdf ...
UPTU B.Tech Operating System ECS-501 Sem 5_2014-15.pdf. UPTU B.Tech Operating System ECS-501 Sem 5_2014-15.pdf. Open. Extract. Open with. Sign In.

UPTU B.Tech Operatin System ECS- 501 Sem 5_2011-12.pdf ...
There was a problem previewing this document. Retrying... Download. Connect more apps... Try one of the apps below to open or edit this item. UPTU B.Tech ...

UPTU B.Tech ECS-602 Software Engineering Sem 6_2010-11.pdf ...
UPTU B.Tech ECS-602 Software Engineering Sem 6_2010-11.pdf. UPTU B.Tech ECS-602 Software Engineering Sem 6_2010-11.pdf. Open. Extract. Open with.

UPTU B.Tech Pattern Recognition ECS-074 Sem 7_2013-14.pdf ...
UPTU B.Tech Pattern Recognition ECS-074 Sem 7_2013-14.pdf. UPTU B.Tech Pattern Recognition ECS-074 Sem 7_2013-14.pdf. Open. Extract. Open with.

UPTU B.Tech Database Management System-ECS-402 Sem 4_2009 ...
UPTU B.Tech Database Management System-ECS-402 Sem 4_2009-10.pdf. UPTU B.Tech Database Management System-ECS-402 Sem 4_2009-10.pdf. Open.

UPTU B.Tech IT Infrastructure and Its Managenent -ECS-304 Sem ...
UPTU B.Tech IT Infrastructure and Its Managenent -ECS-304 Sem 3_2010-11.pdf. UPTU B.Tech IT Infrastructure and Its Managenent -ECS-304 Sem ...

UPTU B.Tech Parallel Algorithms ECS 073 Sem 7_2011-12.pdf ...
UPTU B.Tech Parallel Algorithms ECS 073 Sem 7_2011-12.pdf. UPTU B.Tech Parallel Algorithms ECS 073 Sem 7_2011-12.pdf. Open. Extract. Open with.

UPTU B.Tech Pattern Recognition ECS 074 Sem 7_2011-12.pdf ...
There was a problem previewing this document. Retrying... Download. Connect more apps... Try one of the apps below to open or edit this item. UPTU B.Tech ...

UPTU B.Tech Computer Graphics ECS-504 Sem 5_2013-14.pdf ...
terms Pixel, Aspect Ratio, Resolution. O) Develop and write mid point circle algorithm. Apply it to. predict the pixels in any octant for the circle whose centre.

UPTU B.Tech Computational Complexity ECS 072 Sem 7_2011-12 ...
UPTU B.Tech Computational Complexity ECS 072 Sem 7_2011-12.pdf. UPTU B.Tech Computational Complexity ECS 072 Sem 7_2011-12.pdf. Open. Extract.

UPTU B.Tech Data Compression ECS 077 Sem 7_2011-12.pdf ...
UPTU B.Tech Data Compression ECS 077 Sem 7_2011-12.pdf. UPTU B.Tech Data Compression ECS 077 Sem 7_2011-12.pdf. Open. Extract. Open with.

UPTU B.Tech Pattern Recognition ECS-074 Sem 7_2015-16.pdf ...
There was a problem loading more pages. Retrying... Whoops! There was a problem previewing this document. Retrying... Download. Connect more apps... Try one of the apps below to open or edit this item. UPTU B.Tech Pattern Recognition ECS-074 Sem 7_20

UPTU B.Tech Operating System ECS-501 Sem 5_2014-15.pdf ...
(e) Enumerate the 'advantages of the layered. approach to system design? Also, Explain. virtual machine architecture in detail. (0 What are Sernaphores?

UPTU B.Tech Computer Graphics ECS-504 Sem 5_2014-15.pdf ...
ll0s041 3 16675. Page 3 of 3. UPTU B.Tech Computer Graphics ECS-504 Sem 5_2014-15.pdf. UPTU B.Tech Computer Graphics ECS-504 Sem 5_2014-15.pdf.

UPTU B.Tech Object Oriented Systems- ECS-305 Sem 3_2010-11 ...
Page 3 of 4. UPTU B.Tech Object Oriented Systems- ECS-305 Sem 3_2010-11.pdf. UPTU B.Tech Object Oriented Systems- ECS-305 Sem 3_2010-11.pdf. Open.

UPTU B.Tech Operating System ECS-501 Sem 5_2013-14.pdf ...
UPTU B.Tech Operating System ECS-501 Sem 5_2013-14.pdf. UPTU B.Tech Operating System ECS-501 Sem 5_2013-14.pdf. Open. Extract. Open with. Sign In.

UPTU B.Tech Distributed Database ECS 076 Sem 7_2011-12.pdf ...
4. Attempt any two parts of the following : (10x2=20I*. (a) Explain Issues ofRecovery in distributed database. Explain. types of failure in distributed system.

UPTU B.Tech Operating System ECS-501 Sem 5_2013-14.pdf ...
OPERATINGSYSTEM. Time : 3 Hours ... favour of the oldest process. Draw the Gantt ... Displaying UPTU B.Tech Operating System ECS-501 Sem 5_2013-14.pdf.

UPTU B.Tech Data Mining & Data Warehousing ECS 075 Sem ...
UPTU B.Tech Data Mining & Data Warehousing ECS 075 Sem 7_2011-12.pdf. UPTU B.Tech Data Mining & Data Warehousing ECS 075 Sem 7_2011-12.pdf.

UPTU B.Tech Digital Logic Design-ECS-301 Sem 3_ 2009-10.pdf ...
UPTU B.Tech Digital Logic Design-ECS-301 Sem 3_ 2009-10.pdf. UPTU B.Tech Digital Logic Design-ECS-301 Sem 3_ 2009-10.pdf. Open. Extract. Open with.