This PR changes the build system to use use the sources for the module
`omp_lib` and the `omp_lib.h` include file from the `openmp` runtime
project and not from a separate copy of these files. This will greatly
reduce potential for inconsistencies when adding features to the OpenMP
runtime implementation.
When the OpenMP subproject is not configured, this PR also disables the
corresponding LIT tests with a "REQUIRES" directive at the beginning of
the OpenMP test files.
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Co-authored-by: Valentin Clement (バレンタイン クレメン) <clementval@gmail.com>
Patch 2/3 of the transition step 1 described in
https://discourse.llvm.org/t/rfc-enabling-the-hlfir-lowering-by-default/72778/7.
All the modified tests are still here since coverage for the direct
lowering to FIR was still needed while it was default. Some already have
an HLFIR version, some have not and will need to be ported in step 2
described in the RFC.
Note that another 147 lit tests use -emit-fir/-emit-llvm outputs but do
not need a flag since the HLFIR/no HLFIR output is the same for what is
being tested.
As part of preparing for the switch to HLFIR lowering, all OpenMP FIR
lowering tests are moved to a subdirectory in the OpenMP directory.
Copies of these tests that work with HLFIR will be created during this
week. After the switch the FIR lowering tests will be removed.
All new tests should be added with the HLFIR flow.
