OpenMP, libgomp: Add new runtime routine omp_get_mapped_ptr.

This patch adds the OpenMP runtime routine "omp_get_mapped_ptr" which was
introduced in OpenMP 5.1.

gcc/ChangeLog:

	* omp-low.cc (omp_runtime_api_call): Added get_mapped_ptr to
	omp_runtime_apis array.

libgomp/ChangeLog:

	* libgomp.map: Added omp_get_mapped_ptr.
	* libgomp.texi: Tagged omp_get_mapped_ptr as supported.
	* omp.h.in: Added omp_get_mapped_ptr.
	* omp_lib.f90.in: Added interface for omp_get_mapped_ptr.
	* omp_lib.h.in: Likewise.
	* target.c (omp_get_mapped_ptr): Added implementation of
	omp_get_mapped_ptr.
	* testsuite/libgomp.c-c++-common/get-mapped-ptr-1.c: New test.
	* testsuite/libgomp.c-c++-common/get-mapped-ptr-2.c: New test.
	* testsuite/libgomp.c-c++-common/get-mapped-ptr-3.c: New test.
	* testsuite/libgomp.c-c++-common/get-mapped-ptr-4.c: New test.
	* testsuite/libgomp.fortran/get-mapped-ptr-1.f90: New test.
	* testsuite/libgomp.fortran/get-mapped-ptr-2.f90: New test.
	* testsuite/libgomp.fortran/get-mapped-ptr-3.f90: New test.
	* testsuite/libgomp.fortran/get-mapped-ptr-4.f90: New test.

1 files changed, 49 insertions, 0 deletions

diff --git a/libgomp/testsuite/libgomp.c-c++-common/get-mapped-ptr-4.c b/libgomp/testsuite/libgomp.c-c++-common/get-mapped-ptr-4.c
new file mode 100644
index 0000000..6f4bd62
--- /dev/null
+++ b/libgomp/testsuite/libgomp.c-c++-common/get-mapped-ptr-4.c
@@ -0,0 +1,49 @@
+#include <omp.h>
+#include <stdlib.h>
+
+int
+main ()
+{
+  int d = omp_get_default_device ();
+  int id = omp_get_initial_device ();
+  struct s_t { int m1; char m2; } s;
+  void *p1 = NULL, *p2 = NULL;
+
+  if (d < 0 || d >= omp_get_num_devices ())
+    d = id;
+
+  #pragma omp target data map(alloc: s, s.m2) device(d)
+  {
+    #pragma omp target map(from: p1, p2) map(alloc: s, s.m2) device(d)
+    {
+      p1 = &s;
+      p2 = &s.m2;
+    }
+    if (omp_get_mapped_ptr (&s, d) != (d == id ? &s : p1)
+	|| omp_get_mapped_ptr (&s.m2, d) != (d == id ? &s.m2 : p2))
+      abort ();
+  }
+
+  if (omp_get_mapped_ptr (&s, d) != (d == id ? &s : NULL)
+      || omp_get_mapped_ptr (&s.m2, d) != (d == id ? &s.m2 : NULL))
+    abort ();
+
+  #pragma omp target enter data map(alloc: s, s.m2) device (d)
+  #pragma omp target map(from: p1, p2) map(alloc: s, s.m2) device(d)
+  {
+    p1 = &s;
+    p2 = &s.m2;
+  }
+
+  if (omp_get_mapped_ptr (&s, d) != (d == id ? &s : p1)
+      || omp_get_mapped_ptr (&s.m2, d) != (d == id ? &s.m2 : p2))
+    abort ();
+
+  #pragma omp target exit data map (delete: s, s.m2) device (d)
+
+  if (omp_get_mapped_ptr (&s, d) != (d == id ? &s : NULL)
+      || omp_get_mapped_ptr (&s.m2, d) != (d == id ? &s.m2 : NULL))
+    abort ();
+
+  return 0;
+}