From: Tom de Vries <tom@codesourcery.com>
Date: Wed, 1 Aug 2012 16:53:15 +0000 (+0000)
Subject: vrp76.c: New test.
X-Git-Tag: upstream/12.2.0~74981
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ece401eecc53b5560f490ec2899f7180f8bf10b6;p=platform%2Fupstream%2Fgcc.git

vrp76.c: New test.

2012-08-01  Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/tree-ssa/vrp76.c: New test.

From-SVN: r190044
---

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 330e6458395..0537caf2209 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2012-08-01  Tom de Vries  <tom@codesourcery.com>
+
+	* gcc.dg/tree-ssa/vrp76.c: New test.
+
 2012-08-01  Bill Schmidt  <wschmidt@linux.ibm.com>
 
 	PR tree-optimization/46556
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/vrp76.c b/gcc/testsuite/gcc.dg/tree-ssa/vrp76.c
new file mode 100644
index 00000000000..c8b8595c6be
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/vrp76.c
@@ -0,0 +1,35 @@
+/* { dg-do link } */
+/* { dg-options "-O2 -fno-tree-switch-conversion" } */
+
+/* Based on f3 from vrp63.c, but with switch instead of if-chain.  This test
+   tests the propagation of an anti-range in a switch statement.  */
+
+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;
+}