[openacc, testsuite, committed] Fix libgomp.oacc-c-c++-common/loop-g-{1,2}.c for non-nvidia devices

[Tom de Vries <Tom_deVries@mentor.com>]

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Hi,

this patch makes the test-cases libgomp.oacc-c-c++-common/loop-g-{1,2}.c 
  work for non-nvidia devices.

For nvidia devices, a vector_length of 32 is required for the test to pass.

For devices with a non-32 forced vector_length, this test-case will fail 
the test for excess errors due to:
...
warning: using vector_length (x), ignoring 32
...

Fixed by removing the explicit vector_length setting. For nvidia 
devices, 32 is required, but that's also the forced default, so there's 
no need to be explicit about it.

Committed as obvious.

Thanks,
- Tom

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Fix libgomp.oacc-c-c++-common/loop-g-{1,2}.c for non-nvidia devices

2017-09-28  Tom de Vries  <tom@codesourcery.com>

	* testsuite/libgomp.oacc-c-c++-common/loop-g-1.c (main): Remove
	vector_length(32) clause from acc parallel directive.
	* testsuite/libgomp.oacc-c-c++-common/loop-g-2.c (main): Same.

---
 libgomp/testsuite/libgomp.oacc-c-c++-common/loop-g-1.c | 2 +-
 libgomp/testsuite/libgomp.oacc-c-c++-common/loop-g-2.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/libgomp/testsuite/libgomp.oacc-c-c++-common/loop-g-1.c b/libgomp/testsuite/libgomp.oacc-c-c++-common/loop-g-1.c
index 7bff6cd..ae1d588 100644
--- a/libgomp/testsuite/libgomp.oacc-c-c++-common/loop-g-1.c
+++ b/libgomp/testsuite/libgomp.oacc-c-c++-common/loop-g-1.c
@@ -15,7 +15,7 @@ int main ()
   for (ix = 0; ix < N;ix++)
     ary[ix] = -1;
   
-#pragma acc parallel num_gangs(32) vector_length(32) copy(ary) copy(ondev)
+#pragma acc parallel num_gangs(32) copy(ary) copy(ondev)
   {
 #pragma acc loop gang
     for (unsigned ix = 0; ix < N; ix++)
diff --git a/libgomp/testsuite/libgomp.oacc-c-c++-common/loop-g-2.c b/libgomp/testsuite/libgomp.oacc-c-c++-common/loop-g-2.c
index 92b82a0..c06d861 100644
--- a/libgomp/testsuite/libgomp.oacc-c-c++-common/loop-g-2.c
+++ b/libgomp/testsuite/libgomp.oacc-c-c++-common/loop-g-2.c
@@ -15,7 +15,7 @@ int main ()
   for (ix = 0; ix < N;ix++)
     ary[ix] = -1;
   
-#pragma acc parallel num_gangs(32) vector_length(32) copy(ary) copy(ondev)
+#pragma acc parallel num_gangs(32) copy(ary) copy(ondev)
   {
 #pragma acc loop gang (static:1)
     for (unsigned ix = 0; ix < N; ix++)