re PR tree-optimization/33142 (wrong code with VRP through ABS_EXPR)

2007-08-22  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/33142
	* gcc.c-torture/execute/pr33142.c: New testcase.

From-SVN: r127693

gcc/testsuite/ChangeLog

 2007-08-22  Richard Guenther  <rguenther@suse.de>
 
+	PR tree-optimization/33142
+	* gcc.c-torture/execute/pr33142.c: New testcase.
+
+2007-08-22  Richard Guenther  <rguenther@suse.de>
+
 	PR middle-end/32563
 	* g++.dg/torture/pr32563.C: New testcase.
 

gcc/testsuite/gcc.c-torture/execute/pr33142.c

+int abs(int j);
+extern void abort(void);
+
+__attribute__((noinline)) int lisp_atan2(long dy, long dx) {
+    if (dx <= 0)
+        if (dy > 0)
+            return abs(dx) <= abs(dy);
+    return 0;
+}
+
+int main() {   
+    volatile long dy = 63, dx = -77;
+    if (lisp_atan2(dy, dx))
+        abort();
+    return 0;
+}