[OMPT] Limit omp_control_tool testcase to 5.0

[protze.joachim]

Summary

Starting with OpenMP 5.0 the runtime should provide this function regardless of OMPT support. Therefore, we have one OMPT test, that does not "REQUIRES: ompt". But the function is only available if built with LIBOMP_OMP_VERSION=50. This test fails if the runtime is built with a lower version number.

This patch introduces the OpenMP version as a test feature and adds the REQUIRES line to the test.

[protze.joachim]

NEEDS must be REQUIRES

[Hahnfeld]

That's uncommon: For example the tests have always tested __kmpc_taskloop which is only defined for OpenMP 4.5 and later. I think it would be better to disable all tests when not building for the latest OpenMP version - that eliminates one testing dimension that we don't need to worry about.

[protze.joachim]

ok

runtime/test/lit.cfg

 if config.has_ompt:
     config.available_features.add("ompt")
     # for callback.h
     config.test_flags += " -I " + config.test_source_root + "/ompt"
 
 if 'Linux' in config.operating_system:
     config.available_features.add("linux")
 
+# A runtime implementing 50 should typically also support a feature introduced
+# with 31. A test which needs at least 50 can say "NEEDS: omp50"
+omp_versions={'30','31','40','45','50'}
+
+for ver in omp_versions:
+    if ver <= config.omp_version:
+        config.available_features.add('omp'.ver)
+
 # to run with icc INTEL_LICENSE_FILE must be set
 if 'INTEL_LICENSE_FILE' in os.environ:
     config.environment['INTEL_LICENSE_FILE'] = os.environ['INTEL_LICENSE_FILE']
 
 
 # substitutions
 config.substitutions.append(("%libomp-compile-and-run", \
     "%libomp-compile && %libomp-run"))

runtime/test/lit.site.cfg.in

 config.library_dir = "@LIBOMP_LIBRARY_DIR@"
 config.omp_header_directory = "@LIBOMP_BINARY_DIR@/src"
 config.operating_system = "@CMAKE_SYSTEM_NAME@"
 config.hwloc_library_dir = "@LIBOMP_HWLOC_LIBRARY_DIR@"
 config.using_hwloc = @LIBOMP_USE_HWLOC@
 config.has_ompt = @LIBOMP_OMPT_SUPPORT@ and @LIBOMP_OMPT_OPTIONAL@
 config.has_libm = @LIBOMP_HAVE_LIBM@
 config.has_libatomic = @LIBOMP_HAVE_LIBATOMIC@
+config.omp_version = @LIBOMP_OMP_VERSION@
 
 # Let the main config do the real work.
 lit_config.load_config(config, "@LIBOMP_BASE_DIR@/test/lit.cfg")

runtime/test/ompt/misc/control_tool_no_ompt_support.c

 // RUN: %libomp-compile-and-run
+// Starting with OpenMP 5.0 the runtime should provide this function regardless of OMPT support
+// REQUIRES: omp50
 #include <omp.h>
 
 int main()
 {
   #pragma omp parallel num_threads(1)
   {
     omp_control_tool(omp_control_tool_flush, 1, NULL);
   }
 
   return 0;
 }