[nvptx] Add vector_length 64 test-cases

Add some test-cases using vector_length 64.

2019-01-12  Tom de Vries  <tdevries@suse.de>

	* testsuite/libgomp.oacc-c-c++-common/vector-length-64-1.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/vector-length-64-2.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/vector-length-64-3.c: New test.

From-SVN: r267895

libgomp/ChangeLog

 2019-01-12  Tom de Vries  <tdevries@suse.de>
 
+	* testsuite/libgomp.oacc-c-c++-common/vector-length-64-1.c: New test.
+	* testsuite/libgomp.oacc-c-c++-common/vector-length-64-2.c: New test.
+	* testsuite/libgomp.oacc-c-c++-common/vector-length-64-3.c: New test.
+
+2019-01-12  Tom de Vries  <tdevries@suse.de>
+
 	PR target/85486
 	* testsuite/libgomp.oacc-c-c++-common/pr85486-3.c: New test.
 	* testsuite/libgomp.oacc-c-c++-common/pr85486.c: New test.

libgomp/testsuite/libgomp.oacc-c-c++-common/vector-length-64-1.c

+#include <stdlib.h>
+#include <stdio.h>
+
+int
+main (void)
+{
+#pragma acc parallel vector_length (64) num_workers (16) /* { dg-warning "using num_workers \\(15\\), ignoring 16" "" { target openacc_nvidia_accel_configured } } */
+  {
+#pragma acc loop worker
+    for (unsigned int i = 0; i < 32; i++)
+#pragma acc loop vector
+      for (unsigned int j = 0; j < 64; j++)
+	;
+  }
+
+  return 0;
+}

libgomp/testsuite/libgomp.oacc-c-c++-common/vector-length-64-2.c

+/* { dg-set-target-env-var "GOMP_OPENACC_DIM" ":16:" } */
+/* { dg-shouldfail "" { openacc_nvidia_accel_selected } } */
+
+#include <stdlib.h>
+#include <stdio.h>
+
+int
+main (void)
+{
+#pragma acc parallel vector_length (64)
+  {
+#pragma acc loop worker
+    for (unsigned int i = 0; i < 32; i++)
+#pragma acc loop vector
+      for (unsigned int j = 0; j < 64; j++)
+	;
+  }
+
+  return 0;
+}
+/* { dg-output "The Nvidia accelerator has insufficient barrier resources" { target openacc_nvidia_accel_selected } } */

libgomp/testsuite/libgomp.oacc-c-c++-common/vector-length-64-3.c

+#include <stdlib.h>
+#include <stdio.h>
+
+int
+main (void)
+{
+#pragma acc parallel vector_length (64)
+  {
+#pragma acc loop worker
+    for (unsigned int i = 0; i < 32; i++)
+#pragma acc loop vector
+      for (unsigned int j = 0; j < 64; j++)
+	;
+  }
+
+  return 0;
+}