2007-09-26 Richard Guenther <rguenther@suse.de>libbid-last-merge

	PR tree-optimization/33563
	* tree-ssa-dse.c (get_use_of_stmt_lhs): Rename to ...
	(get_kill_of_stmt_lhs): ... this.  Re-structure.  Handle
	aggregate stores.
	(dse_optimize_stmt): Call get_kill_of_stmt_lhs instead of
	get_use_of_stmt_lhs.

	* gcc.dg/torture/pr33563.c: New testcase.

1 files changed, 22 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/torture/pr33563.c b/gcc/testsuite/gcc.dg/torture/pr33563.c
new file mode 100644
index 00000000000..47907db7ea6
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr33563.c
@@ -0,0 +1,22 @@
+/* { dg-do run } */
+/* { dg-options "--param max-aliased-vops=0" } */
+
+struct T
+{
+  int a, b;
+} t, q;
+
+int main (void)
+{
+  struct T *p;
+
+  t.a = 1;
+  t.b = 2;
+  q = t;
+  t.a = 3;
+
+  if (q.a != 1)
+    __builtin_abort ();
+
+  return 0;
+}