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Recent questions tagged live-variable-analysis

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Live Variable Analysis | Made Easy Full Syllabus Test
A variable v is live at a program point p if some path from p to program exit contains an r-value occurrence of v which is not preceded by an l-value occurrence of v . That is, the variable should be referenced before ... zero as from the exit point there are no such definitions, to begin with? This is the solution they have provided :

palashbehra5 asked in Compiler Design Jan 11, 2022

by palashbehra5

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1 vote

1 answer

2

Live variable Analysis
Need to tell the Variables live at the Shown points. And Please explain because I know how to identify but I am little confused in applying the concept. Thank you

Na462 asked in Compiler Design Jun 11, 2018

by Na462

1.2k views

1 vote

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3

Live variable
What is live variable and dead code elimination. please explain with example each

santhoshdevulapally asked in Compiler Design Jan 4, 2017

by santhoshdevulapally

499 views

5 votes

1 answer

4

DRDO 2009
A variable X has been assigned fresh values in statements numbered 6, 9 and 12 in a 25- statement program which does not have any jump instructions.This variable is used in statements numbered 7, 8, 10, 16 and 17.the statement range where the register, used by the variable X, could be assigned to ... variable are- (A.) 8-9, 10- 12, 17- 25 (B.) 11, 18-25 (C.) 17-25 (D.) Non of the above

khushtak asked in Compiler Design Oct 8, 2015

1.9k views

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5

Liveness of a variable
https://gateoverflow.in/?qa=blob&qa_blobid=6419625116648850773

spriti1991 asked in Compiler Design Apr 5, 2015

678 views

55 votes

3 answers

6

GATE CSE 2015 Set 1 | Question: 50
A variable $x$ is said to be live at a statement $s_{i}$ in a program if the following three conditions hold simultaneously: There exists a statement $S_{j}$ that uses $x$ There is a path from $S_{i}$ to $S_{j}$ in the flow graph corresponding to the program The path ... above control flow graph are $\text{p, s, u}$ $\text{r, s, u}$ $\text{r, u}$ $\text{q, v}$

makhdoom ghaya asked in Compiler Design Feb 13, 2015

by makhdoom ghaya

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