re PR tree-optimization/50763 (ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge)

2011-11-04  Tom de Vries  <tom@codesourcery.com>

	PR tree-optimization/50763
	* gcc.dg/pr50763-5.c: New test.

From-SVN: r180940

gcc/testsuite/ChangeLog

 2011-11-04  Tom de Vries  <tom@codesourcery.com>
 
 	PR tree-optimization/50763
+	* gcc.dg/pr50763-5.c: New test.
+
+2011-11-04  Tom de Vries  <tom@codesourcery.com>
+
+	PR tree-optimization/50763
 	* g++.dg/pr50763-4.C: New test.
 
 2011-11-04  Jakub Jelinek  <jakub@redhat.com>

gcc/testsuite/gcc.dg/pr50763-5.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -ftree-tail-merge" } */
+
+struct inode
+{
+  unsigned short i_mode;
+  unsigned int i_flags;
+};
+
+static inline int
+is_sxid (unsigned int mode)
+{
+  return (mode & 0004000) || ((mode & 0002000) && (mode & 00010));
+};
+
+void
+gfs2_set_inode_flags (int ip, struct inode *inode)
+{
+  unsigned int flags = inode->i_flags;
+  if ((ip == 0) && !is_sxid (inode->i_mode))
+    inode->i_flags |= 4096;
+  inode->i_flags = flags;
+}