Intel: evaluate if suitable: #pragma loop_coalesce
Example:
#pragma loop_coalesce
for (int i = 0; i < N; i++)
for (int j = 0; j < M; j++)
sum[i][j] += i+j;
Edited by Leonardo Solis
Example:
#pragma loop_coalesce
for (int i = 0; i < N; i++)
for (int j = 0; j < M; j++)
sum[i][j] += i+j;