re PR tree-optimization/15911 (VRP/DOM does not like TRUTH_AND_EXPR)

2006-10-22  Jeff Law  <law@redhat.com>
	Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/15911
	* tree-vrp.c (extract_code_and_val_from_cond): New function.
	(register_edge_assert_for_1): Likewise.
	(register_edge_assert_for): Handle &&/&/||/| in conditionals.
	(find_conditional_asserts): Adjust for new function signature.
	(find_assert_locations): Likewise.

	* gcc.dg/tree-ssa/vrp30.c: New testcase.

Co-Authored-By: Richard Guenther <rguenther@suse.de>

From-SVN: r117960

gcc/ChangeLog

+2006-10-22  Jeff Law  <law@redhat.com>
+	Richard Guenther  <rguenther@suse.de>
+
+	PR tree-optimization/15911
+	* tree-vrp.c (extract_code_and_val_from_cond): New function.
+	(register_edge_assert_for_1): Likewise.
+	(register_edge_assert_for): Handle &&/&/||/| in conditionals.
+	(find_conditional_asserts): Adjust for new function signature.
+	(find_assert_locations): Likewise.
+
 2006-10-22  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* config/i386/tmmintrin.h: Remove the duplicated content.

gcc/testsuite/ChangeLog

+2006-10-22  Jeff Law  <law@redhat.com>
+	Richard Guenther  <rguenther@suse.de>
+
+	PR tree-optimization/15911
+	* gcc.dg/tree-ssa/vrp30.c: New testcase.
+
 2006-10-22  Nathan Sidwell  <nathan@codesourcery.com>
 
 	PR c++/20647

gcc/testsuite/gcc.dg/tree-ssa/vrp30.c

+/* { dg-do link } */
+/* { dg-options "-O2" } */
+
+extern int link_error (int);
+
+int tst2 (int x, int y)
+{
+  /* VRP should be able to extract range information for
+     x and y out of this TRUTH_AND_EXPR.  */
+  if ((x > 5555) && (y < 6666))
+    {
+      if (x > 5555)
+        if (y < 6666)
+          return 1111;
+        else
+          return link_error (2222);
+      else
+        if (y < 6666)
+          return link_error (3333);
+        else
+          return link_error (4444);
+    }
+  else
+    return 0;
+}
+
+int main()
+{
+  return 0;
+}