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The following code segment is executed on a processor which allows only register operands in
its instructions. Each instruction can have almost two source operands and one destination operand.
Assume that all variables are dead after this code segment
c= a+ b;
d = c * a;
e= c+ a;
x =c *c;
if ( x >a) {
y= a * a;
}
else {
d =d * d;
e =e * e;
}
Q.
What is the minimum number of registers needed in the instruction set architecture of the
processor to compile this code segment without any spill to memory? Do not apply any
optimization other than optimizing register allocation
  • a)
    3
  • b)
    4
  • c)
    5
  • d)
    6
Correct answer is option 'B'. Can you explain this answer?
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The following code segment is executed on a processor which allows only register operands inits instructions. Each instruction can have almost two source operands and one destination operand.Assume that all variables are dead after this code segmentc= a+ b;d = c * a;e= c+ a;x =c *c;if ( x >a) {y= a * a;}else {d =d * d;e =e * e;}Q.What is the minimum number of registers needed in the instruction set architecture of theprocessor to compile this code segment without any spill to memory? Do not apply anyoptimization other than optimizing register allocationa)3b)4c)5d)6Correct answer is option 'B'. Can you explain this answer?
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The following code segment is executed on a processor which allows only register operands inits instructions. Each instruction can have almost two source operands and one destination operand.Assume that all variables are dead after this code segmentc= a+ b;d = c * a;e= c+ a;x =c *c;if ( x >a) {y= a * a;}else {d =d * d;e =e * e;}Q.What is the minimum number of registers needed in the instruction set architecture of theprocessor to compile this code segment without any spill to memory? Do not apply anyoptimization other than optimizing register allocationa)3b)4c)5d)6Correct answer is option 'B'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about The following code segment is executed on a processor which allows only register operands inits instructions. Each instruction can have almost two source operands and one destination operand.Assume that all variables are dead after this code segmentc= a+ b;d = c * a;e= c+ a;x =c *c;if ( x >a) {y= a * a;}else {d =d * d;e =e * e;}Q.What is the minimum number of registers needed in the instruction set architecture of theprocessor to compile this code segment without any spill to memory? Do not apply anyoptimization other than optimizing register allocationa)3b)4c)5d)6Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The following code segment is executed on a processor which allows only register operands inits instructions. Each instruction can have almost two source operands and one destination operand.Assume that all variables are dead after this code segmentc= a+ b;d = c * a;e= c+ a;x =c *c;if ( x >a) {y= a * a;}else {d =d * d;e =e * e;}Q.What is the minimum number of registers needed in the instruction set architecture of theprocessor to compile this code segment without any spill to memory? Do not apply anyoptimization other than optimizing register allocationa)3b)4c)5d)6Correct answer is option 'B'. Can you explain this answer?.
Solutions for The following code segment is executed on a processor which allows only register operands inits instructions. Each instruction can have almost two source operands and one destination operand.Assume that all variables are dead after this code segmentc= a+ b;d = c * a;e= c+ a;x =c *c;if ( x >a) {y= a * a;}else {d =d * d;e =e * e;}Q.What is the minimum number of registers needed in the instruction set architecture of theprocessor to compile this code segment without any spill to memory? Do not apply anyoptimization other than optimizing register allocationa)3b)4c)5d)6Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for GATE. Download more important topics, notes, lectures and mock test series for GATE Exam by signing up for free.
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