Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 54 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/20030709-2.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/20030709-2.c
new file mode 100644
index 000000000..f99598d73
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/20030709-2.c
@@ -0,0 +1,54 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-cddce2" } */
+  
+struct rtx_def;
+typedef struct rtx_def *rtx;
+union tree_node;
+typedef union tree_node *tree;
+typedef struct mem_attrs
+{
+  int  foo;
+
+} mem_attrs;
+union rtunion_def
+{
+  mem_attrs *rtmem;
+};
+typedef union rtunion_def rtunion;
+struct rtx_def
+{
+  rtunion fld[1];
+};
+struct tree_decl
+{
+  rtx rtl;
+};
+union tree_node
+{
+  struct tree_decl decl;
+};
+void *
+get_alias_set (t)
+     tree t;
+{
+  long set;
+  if (t->decl.rtl)
+    return (t->decl.rtl->fld[1].rtmem 
+	    ? 0
+	    : (((t->decl.rtl ? t->decl.rtl: (make_decl_rtl (t, 0), t->decl.rtl)))->fld[1]).rtmem);
+  return (void*)-1;
+}
+
+/* There should be precisely one load of ->decl.rtl.  If there is
+   more than, then the dominator optimizations failed.  */
+/* { dg-final { scan-tree-dump-times "->decl\\.rtl" 1 "cddce2"} } */
+  
+/* There should be no loads of .rtmem since the complex return statement
+   is just "return 0".  */
+/* { dg-final { scan-tree-dump-times ".rtmem" 0 "cddce2"} } */
+  
+/* There should be one IF statement (the complex return statement should
+   collapse down to a simple return 0 without any conditionals).  */
+/* { dg-final { scan-tree-dump-times "if " 1 "cddce2"} } */
+
+/* { dg-final { cleanup-tree-dump "cddce2" } } */