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2. Row-major order and column-major order are methods for storing multidimensional arrays in memory. Row major stores an array row-by-row, and column major stores an
2. Row-major order and column-major order are methods for storing multidimensional arrays in memory. Row major stores an array row-by-row, and column major stores an array column-by-column
//Row-major order traversal of 4 x 4 array of words. int size = 4; int data[size][size]; int value = 1;
int row, col; for (row = 0; rowfor (col = 0; colvalue++;
}
}
//Column-major order traversal of 4x4 array of words.int size = 4; int data[size][size]; int value = 1; int row, col; for (col = 0; colfor (row = 0; row} }
Write the ARM LEGv8 code for the above two C codes. Which one of the two methods do you think is better in terms of performance? Explain why.
Values as stored in Memory 1 2 34 5 6 7 89 1011 12 131415 16 Written down as row-major 1 2 3 4 5 6 7 8 9 10 11 12 3 14 15 16 Column-major Values as stored in Memory 1 2 34 5 6 7 89 1011 12 131415 16 Written down as row-major 1 2 3 4 5 6 7 8 9 10 11 12 3 14 15 16 Column-major
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