Merge tree-ssa-20020619-branch into mainline.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@81764 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 40 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/20030917-2.c b/gcc/testsuite/gcc.dg/tree-ssa/20030917-2.c
new file mode 100644
index 00000000000..2c08050c975
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/20030917-2.c
@@ -0,0 +1,40 @@
+/* This test was causing an ICE in DCE because we were allowing void *
+   pointers to have a memory tag, which we were copying when doing copy
+   propagation.  Since void * can never be de-referenced, its memory tag
+   was never renamed.  */
+
+/* { dg-do compile } */
+/* { dg-options "-O -ftree-dominator-opts" } */
+
+typedef __SIZE_TYPE__ size_t;
+typedef union tree_node *tree;
+struct operands_d
+{
+  tree *def_op;
+};
+
+void
+gt_ggc_mx_operands_d (void *x_p)
+{
+  struct operands_d *const x = (struct operands_d *) x_p;
+  if ((*x).def_op != ((void *) 0))
+    {
+      size_t i0;
+      do
+	{
+	  const void *const a__ = ((*x).def_op);
+	  if (a__ != ((void *) 0) && a__ != (void *) 1)
+	    ggc_set_mark (a__);
+	}
+      while (0);
+      for (i0 = 0; i0 < (size_t) (1); i0++)
+	{
+	  do
+	    {
+	      if ((void *) (*x).def_op[i0] != ((void *) 0))
+		gt_ggc_mx_lang_tree_node ((*x).def_op[i0]);
+	    }
+	  while (0);
+	}
+    }
+}