1 files changed, 81 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/cswtch.c b/gcc/testsuite/gcc.dg/tree-ssa/cswtch.c
new file mode 100644
index 00000000000..06710f21793
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/cswtch.c
@@ -0,0 +1,81 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-switchconv" } */
+/* { dg-do run } */
+
+extern void abort (void);
+
+static int X, Y;
+
+int check(int param)
+{
+  int a = 0;
+  int b = 1;
+  
+  switch (param) 
+    {
+    case -2:
+      a = 0;
+      b = -1;
+      break;
+    case 1:
+    case 2:
+      a = 8;
+      b = 6;
+      break;
+    case 3:
+      a = 9;
+      b = 5;
+      break;
+    case 6:
+      a = 10;
+      b = 4;
+      break;
+    default:
+      a = 16;
+      b = 1;
+    }
+  
+  X = a;
+  Y = b;
+  return 0;
+}
+
+void assertions(int a, int b)
+{
+  if (X != a || Y != b)
+    abort();  
+
+  return;
+}
+
+int main ()
+{
+  check (-10);
+  assertions (16, 1);
+
+  check (-2);
+  assertions (0, -1);
+
+  check(1);
+  assertions (8, 6);
+
+  check(2);
+  assertions (8, 6);
+
+  check(3);
+  assertions (9, 5);
+
+  check(5);
+  assertions (16, 1);
+
+  check(6);
+  assertions (10, 4);
+
+  check(12);
+  assertions (16, 1);
+
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump "Switch converted" "switchconv" } } */
+/* { dg-final { cleanup-tree-dump "switchconv" } } */