[hsa] Avoid segfault in hsa switch expansion

2016-05-23  Martin Jambor  <mjambor@suse.cz>

	* hsa-gen.c (gen_hsa_insns_for_switch_stmt): Create an empty
	default block if a PHI node in the original one would be resized.

libgomp/
	* testsuite/libgomp.hsa.c/switch-sbr-2.c: New test.

From-SVN: r236585

1 files changed, 59 insertions, 0 deletions

diff --git a/libgomp/testsuite/libgomp.hsa.c/switch-sbr-2.c b/libgomp/testsuite/libgomp.hsa.c/switch-sbr-2.c
new file mode 100644
index 0000000..06990d1
--- /dev/null
+++ b/libgomp/testsuite/libgomp.hsa.c/switch-sbr-2.c
@@ -0,0 +1,59 @@
+/* { dg-additional-options "-fno-tree-switch-conversion" } */
+
+#pragma omp declare target
+int
+foo (unsigned a)
+{
+  switch (a)
+    {
+    case 1 ... 5:
+      return 1;
+    case 9 ... 11:
+      return a + 3;
+    case 12 ... 13:
+      return a + 3;
+    default:
+      return 44;
+    }
+}
+#pragma omp end declare target
+
+#define s 100
+
+void __attribute__((noinline, noclone))
+verify(int *a)
+{
+  if (a[0] != 44)
+    __builtin_abort ();
+  
+  for (int i = 1; i <= 5; i++)
+    if (a[i] != 1)
+      __builtin_abort ();
+
+  for (int i = 6; i <= 8; i++)
+    if (a[i] != 44)
+      __builtin_abort ();
+
+  for (int i = 9; i <= 13; i++)
+    if (a[i] != i + 3)
+      __builtin_abort ();
+
+  for (int i = 14; i < s; i++)
+    if (a[i] != 44)
+      __builtin_abort ();
+}
+
+int main(int argc)
+{
+  int array[s];
+#pragma omp target
+  {
+    for (int i = 0; i < s; i++)
+      {
+	int v = foo (i);
+	array[i] = v;
+      }
+  }
+  verify (array);
+  return 0;
+}