Enable OpenMP build for 32-bit FreeBSD
To be able to successfully build OpenMP on 32-bit FreeBSD, such as
FreeBSD/i386, I first had to provide a few wrappers (see D60916), and
then add KMP_OS_FREEBSD to the list of defines checked for 32-bit
architectures in kmp_runtime.cpp.
I have successfully built libomp.so and ran a bunch of test programs on
FreeBSD/i386 with this.
Reviewers: emaste, jlpeyton, Hahnfeld
Reviewed By: jlpeyton
Subscribers: krytarowski, guansong, jdoerfert, openmp-commits, llvm-commits
Differential Revision: https://reviews.llvm.org/D60917