[committed] libgomp: Add a testcase for omp_get_num_teams inside of target inside of host teams

[Jakub Jelinek via Gcc-patches]

Hi!

This is https://github.com/OpenMP/spec/issues/3183
There is an agreement that we should return 1 team inside of target,
even if that target is inside of host teams.  We were doing that
when offloading and not during host fallback, r12-5151 should fix that
even for host fallback.

Bootstrapped/regtested on x86_64-linux and i686-linux and tested with
nvptx offloading on the former.

2021-11-15  Jakub Jelinek  <ja...@redhat.com>

        * testsuite/libgomp.c/teams-5.c: New test.

--- libgomp/testsuite/libgomp.c/teams-5.c.jj    2021-11-12 17:10:07.739523564 
+0100
+++ libgomp/testsuite/libgomp.c/teams-5.c       2021-11-12 17:09:41.424899991 
+0100
@@ -0,0 +1,17 @@
+#include <omp.h>
+#include <stdlib.h>
+
+int
+main ()
+{
+  #pragma omp teams num_teams (2)
+  {
+    if (omp_get_num_teams () != 2)
+      abort ();
+    #pragma omp parallel if (0)
+    #pragma omp target
+    if (omp_get_num_teams () != 1 || omp_get_team_num () != 0)
+      abort ();
+  }
+  return 0;
+}

        Jakub