[OpenACC] Add dependent test for break/continue compute construct diag

I discovered while debugging something else that this could possibly
cause an assert if I'm not careful with followup patches, so add the
tests.

Author: erichkeane

clang/test/SemaOpenACC/no-branch-in-out.cpp

@@ -15,3 +15,100 @@ void ReturnTest() {
     }
   }
 }
+
+template<typename T>
+void BreakContinue() {
+
+#pragma acc parallel
+  for(int i =0; i < 5; ++i) {
+    switch(i) {
+      case 0:
+      break; // leaves switch, not 'for'.
+      default:
+      i +=2;
+      break;
+    }
+    if (i == 2)
+      continue;
+
+    break;  // expected-error{{invalid branch out of OpenACC Compute Construct}}
+  }
+
+  int j;
+  switch(j) {
+    case 0:
+#pragma acc parallel
+    {
+      break; // expected-error{{invalid branch out of OpenACC Compute Construct}}
+    }
+    case 1:
+#pragma acc parallel
+    {
+    }
+    break;
+  }
+
+#pragma acc parallel
+  for(int i = 0; i < 5; ++i) {
+    if (i > 1)
+      break; // expected-error{{invalid branch out of OpenACC Compute Construct}}
+  }
+
+#pragma acc parallel
+  switch(j) {
+    case 1:
+      break;
+  }
+
+#pragma acc parallel
+  {
+    for(int i = 1; i < 100; i++) {
+      if (i > 4)
+        break;
+    }
+  }
+
+  for (int i =0; i < 5; ++i) {
+#pragma acc parallel
+    {
+      continue; // expected-error{{invalid branch out of OpenACC Compute Construct}}
+    }
+  }
+
+#pragma acc parallel
+  for (int i =0; i < 5; ++i) {
+    continue;
+  }
+
+#pragma acc parallel
+  for (int i =0; i < 5; ++i) {
+    {
+      continue;
+    }
+  }
+
+  for (int i =0; i < 5; ++i) {
+#pragma acc parallel
+    {
+      break; // expected-error{{invalid branch out of OpenACC Compute Construct}}
+    }
+  }
+
+#pragma acc parallel
+  while (j) {
+    --j;
+    if (j > 4)
+      break; // expected-error{{invalid branch out of OpenACC Compute Construct}}
+  }
+
+#pragma acc parallel
+  do {
+    --j;
+    if (j > 4)
+      break; // expected-error{{invalid branch out of OpenACC Compute Construct}}
+  } while (j );
+}
+
+void Instantiate() {
+  BreakContinue<int>();
+}