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

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 8b73a028977c07e8c067f8457efd85f0f3bd240b..b25e44d5ba4ff2e038b834ebd452a8e10297ac12 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+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

diff --git a/gcc/testsuite/gcc.c-torture/execute/pr33142.c b/gcc/testsuite/gcc.c-torture/execute/pr33142.c
new file mode 100644 (file)
index 0000000..7bfc5b5
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/pr33142.c
@@ -0,0 +1,16 @@
+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;
+}