OpenMP Initial testsuite change to purely llvm-lit based testing

This change introduces a check-libomp target which is based upon llvm's lit
test infrastructure. Each test (generated from the University of Houston's
OpenMP testsuite) is compiled and then run. For each test, an exit status of 0
indicates success and non-zero indicates failure. This way, FileCheck is not
needed. I've added a bit of logic to generate symlinks (libiomp5 and libgomp)
in the build tree so that gcc can be tested as well.  When building out-of-
tree builds, the user will have to provide llvm-lit either by specifying
-DLIBOMP_LLVM_LIT_EXECUTABLE or having llvm-lit in their PATH.

Differential Revision: http://reviews.llvm.org/D11821

llvm-svn: 248211

1 files changed, 52 insertions, 0 deletions

diff --git a/openmp/runtime/test/tasking/omp_task.c b/openmp/runtime/test/tasking/omp_task.c
new file mode 100644
index 00000000000..d2e28aad1a8
--- /dev/null
+++ b/openmp/runtime/test/tasking/omp_task.c
@@ -0,0 +1,52 @@
+// RUN: %libomp-compile-and-run
+#include <stdio.h>
+#include <math.h>
+#include "omp_testsuite.h"
+#include "omp_my_sleep.h"
+
+int test_omp_task()
+{
+  int tids[NUM_TASKS];
+  int i;
+
+  #pragma omp parallel 
+  {
+    #pragma omp single
+    {
+      for (i = 0; i < NUM_TASKS; i++) {
+        /* First we have to store the value of the loop index in a new variable
+         * which will be private for each task because otherwise it will be overwritten
+         * if the execution of the task takes longer than the time which is needed to 
+         * enter the next step of the loop!
+         */
+        int myi;
+        myi = i;
+        #pragma omp task
+        {
+          my_sleep (SLEEPTIME);
+          tids[myi] = omp_get_thread_num();
+        } /* end of omp task */
+      } /* end of for */
+    } /* end of single */
+  } /*end of parallel */
+
+  /* Now we ckeck if more than one thread executed the tasks. */
+  for (i = 1; i < NUM_TASKS; i++) {
+    if (tids[0] != tids[i])
+      return 1;
+  }
+  return 0;
+} /* end of check_parallel_for_private */
+
+int main()
+{
+  int i;
+  int num_failed=0;
+
+  for(i = 0; i < REPETITIONS; i++) {
+    if(!test_omp_task()) {
+      num_failed++;
+    }
+  }
+  return num_failed;
+}