Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 64 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/forwprop-26.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/forwprop-26.c
new file mode 100644
index 000000000..108b1bcaa
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/forwprop-26.c
@@ -0,0 +1,64 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-forwprop1 -fno-short-enums" } */
+
+union tree_node;
+typedef union tree_node *tree;
+enum tree_code
+{
+  MAX_TREE_CODES
+};
+extern unsigned char tree_contains_struct[MAX_TREE_CODES][64];
+struct tree_base
+{
+  __extension__ enum tree_code code:16;
+  unsigned public_flag:1;
+};
+enum tree_node_structure_enum
+{
+  TS_DECL_WITH_VIS,
+};
+struct tree_decl_with_vis
+{
+  unsigned comdat_flag:1;
+};
+union tree_node
+{
+  struct tree_base base;
+  struct tree_decl_with_vis decl_with_vis;
+};
+struct varpool_node
+{
+  tree decl;
+  struct varpool_node *next_needed, *prev_needed;
+  unsigned externally_visible:1;
+};
+extern struct varpool_node *varpool_nodes_queue;
+struct pointer_set_t;
+struct pointer_set_t *pointer_set_create (void);
+__inline__ static unsigned char
+varpool_externally_visible_p (struct varpool_node *vnode,
+			      unsigned char aliased)
+{
+  struct varpool_node *alias;
+  if (!(( { __typeof (vnode->decl) const __t = (vnode->decl); __t;})->decl_with_vis.comdat_flag)
+      && !((vnode->decl)->base.public_flag))
+    return 0;
+  if (aliased)
+    return 1;
+  return 0;
+}
+
+unsigned int
+function_and_variable_visibility (unsigned char whole_program)
+{
+  struct cgraph_node *node;
+  struct varpool_node *vnode;
+  struct pointer_set_t *aliased_vnodes = pointer_set_create ();
+  for (vnode = varpool_nodes_queue; vnode; vnode = vnode->next_needed)
+    if (varpool_externally_visible_p
+	(vnode, pointer_set_contains (aliased_vnodes, vnode)))
+      vnode->externally_visible = 1;
+}
+
+/* { dg-final { scan-tree-dump-not "& 255" "forwprop1"} } */
+/* { dg-final { cleanup-tree-dump "forwprop1" } } */