vrp78.c: New test.

2012-08-06  Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/tree-ssa/vrp78.c: New test.

From-SVN: r190169

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index e41b25a717a6b3e598b036ba2607045d47d3133e..7311f7b8c4cadf28ef4580dac50bc74ba74b8bbf 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2012-08-06  Tom de Vries  <tom@codesourcery.com>
+
+       * gcc.dg/tree-ssa/vrp78.c: New test.
+
 2012-08-04  Sandra Loosemore  <sandra@codesourcery.com>
            Richard Sandiford  <rdsandiford@googlemail.com>
 

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/vrp78.c b/gcc/testsuite/gcc.dg/tree-ssa/vrp78.c
new file mode 100644 (file)
index 0000000..e08d1ff
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/vrp78.c
@@ -0,0 +1,34 @@
+/* { dg-do link } */
+/* { dg-options "-O2" } */
+
+/* Based on f3 from vrp63.c, but with switch instead of if-chain.  */
+
+extern void link_error (void);
+
+void
+f3 (int s)
+{
+  if (s >> 3 == -2)
+    /* s in range [ -16, -9].  */
+    ;
+  else
+    {
+      /* s in range ~[-16, -9], so none of the case labels can be taken.  */
+      switch (s)
+       {
+       case -16:
+       case -12:
+       case -9:
+         link_error ();
+         break;
+       default:
+         break;
+       }
+    }
+}
+
+int
+main ()
+{
+  return 0;
+}