2005-01-08 Jeff Law <law@redhat.com>

	    Diego Novillo  <dnovillo@redhat.com>

	* tree-nrv.c (tree_nrv): Ignore volatile return values.
	* tree-ssa-dse.c (dse_optimize_stmt): Do not optimize
	statements with volatile operands.
	* tree-ssa-operands.c (add_stmt_operand): Do add volatile
	operands after marking a statement with has_volatile_ops.

testsuite/ChangeLog:

2005-01-08  Diego Novillo  <dnovillo@redhat.com>

	* gcc.dg/pr18241-1.c: New test.
	* gcc.dg/pr18241-2.c: New test.
	* gcc.dg/pr18241-3.c: New test.
	* gcc.dg/pr18241-4.c: New test.
	* gcc.dg/pr18241-5.c: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@93088 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 31 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/pr18241-3.c b/gcc/testsuite/gcc.dg/pr18241-3.c
new file mode 100644
index 00000000000..e2bc3d7ff43
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr18241-3.c
@@ -0,0 +1,31 @@
+/* { dg-do execute } */
+/* { dg-options "-O1" } */ 
+
+void abort (void);
+
+void radix_tree_tag_clear (int *node)
+{
+	int *path[2], **pathp = path, height;
+	volatile int *addr;
+	
+	height = 1;
+	pathp[0] = node;
+	
+	while (height > 0) {
+		pathp[1] = pathp[0];
+		pathp++;
+		height--;
+	}
+	
+	addr = pathp[0];
+	*addr = 1;
+}
+
+int main ()
+{
+	int n;
+	radix_tree_tag_clear (&n);
+	if (n != 1)
+		abort ();
+	return 0;
+}