[llvm-bugs] [Bug 34017] New: OpenMP documentation is non-existent

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=34017

            Bug ID: 34017
           Summary: OpenMP documentation is non-existent
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: gonzalobg88 at gmail.com
                CC: llvm-bugs at lists.llvm.org

Clang OpenMP support is undocumented:

- the OpenMP command line options that clang supports are not documented, e.g.,
see https://clang.llvm.org/docs/search.html?q=openmp

- there isn't a section in the documentation about using OpenMP with clang.
There should be such a section that shows how to compile an OpenMP hello world
program with clang using both llvm's and gnu's openmp run-times.

- the documentation section should point out to the openmp.llvm.org docs, which
should show how to build the openmp-rt library with clang in tree such that it
gets picked up by default when a user runs clang -fopenmp

- the documentation section in openmp.llvm.orgs should be expanded to show how
to use the library with clang when e.g. doing an out-of-tree build of the
library, and also how to build the library in-tree such that the systems
default is picked instead by clang by default.

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