[OpenMP] runtime support for efficient partitioning of collapsed triangular loops #83939
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added 2 commits
March 4, 2024 16:00
vadikp-intel
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This PR adds OMP runtime support for more efficient partitioning of certain types of collapsed loops that can be used by compilers that support loop collapsing (i.e. MSVC) to achieve more optimal thread load balancing.
In particular, this PR addresses double nested upper and lower isosceles triangular loops of the following types
for (int i=0; i<N; i++)
for (int j=0; j<i; j++)
for (int i=0; i<N; j++)
for (int j=0; j<=i; j++)
for (int i=0; i<N; i++)
for (int j=i; j<N; j++)
Includes tests for the three supported loop types.