https://bugs.llvm.org/show_bug.cgi?id=39137
Andrey Churbanov <andrey.churba...@intel.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Fixed By Commit(s)| |r346862
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #1 from Andrey Churbanov <andrey.churba...@intel.com> ---
The function omp_set_num_threads() fixed to not write into internal structure
if requested number of threads is the same as the value of internal control
variable (ICV).
With num_threads() clause things are more complicated, because the write here
is cheaper and this write eliminates the need to read ICV twice - here and in
the following __kmp_fork_call. Attempt to avoid write op here caused some
performance regressions in our testing, so I'd prefer to leave the clause
implementation intact.
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