[Bug testsuite/81690] libgomp.c/{target-32,thread-limit-2}.c fail for nvptx: missing usleep

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81690

Tom de Vries <vries at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |nvptx
                 CC|                            |amonakov at gcc dot gnu.org,
                   |                            |jakub at gcc dot gnu.org

--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
Reaction from Jakub ( https://gcc.gnu.org/ml/gcc-patches/2016-11/msg01026.html
) :
...
> Two due to tests using 'usleep' in a target region:
> FAIL: libgomp.c/target-32.c (test for excess errors)
> FAIL: libgomp.c/thread-limit-2.c (test for excess errors)

Could these be "solved" say by something like:

--- libgomp/testsuite/libgomp.c/target-32.c.jj  2015-11-14 19:38:31.000000000
+0100
+++ libgomp/testsuite/libgomp.c/target-32.c     2016-11-11 09:29:50.411072865
+0100
@@ -1,7 +1,20 @@
 #include <stdlib.h>
 #include <unistd.h>
+#include <omp.h>

-int main ()
+static inline
+do_sleep (int cnt)
+{
+  int i;
+  if (omp_is_initial_device ())
+    usleep (cnt);
+  else
+    for (i = 0; i < 10 * cnt; i++)
+      asm volatile ("" : : : "memory");
+}
+
+int
+main ()
 {
   int a = 0, b = 0, c = 0, d[7];

plus folding omp_is_initial_device as a builtin in the offloading compiler
(which we want to do anyway and similar builtin is folded for OpenACC
already)? 
...