PR tree-optimization/42893

	* gcc.tree-ssa/pr42893.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@169933 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 8ceef88..5a4fb3d 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2011-02-08  Jeff Law <law@redhat.com>
+
+       PR tree-optimization/42893
+       * gcc.tree-ssa/pr42893.c: New test.
+
 2011-02-08  Sebastian Pop  <sebastian.pop@amd.com>
 
        PR tree-optimization/46834

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr42893.c b/gcc/testsuite/gcc.dg/tree-ssa/pr42893.c
new file mode 100644 (file)
index 0000000..b3fbd76
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr42893.c
@@ -0,0 +1,30 @@
+/* { dg-do compile } */
+/* { dg-options "-O3 -fdump-tree-optimized" } */
+
+struct frame_info;
+void tui_registers_changed_hook (void);
+extern struct frame_info *deprecated_selected_frame;
+int tui_refreshing_registers = 0;
+void
+tui_registers_changed_hook (void)
+{
+  struct frame_info *fi;
+  fi = deprecated_selected_frame;
+  if (fi)
+
+    {
+      if (tui_refreshing_registers == 0)
+
+       {
+         tui_refreshing_registers = 1;
+         tui_refreshing_registers = 0;
+       }
+    }
+  return;
+}
+
+/* No references to tui_refreshing_registers should remain.  */
+/* { dg-final { scan-tree-dump-not "tui_refreshing_registers" "optimized"} } */
+
+/* { dg-final { cleanup-tree-dump "optimized" } } */
+