# HG changeset patch
# User twisti
# Date 1241636682 25200
# Node ID 825bfb41920c22723222fa02cda757967e963984
# Parent  60853c6a93b7f7e656eeef977d4ea40da3705753
6837011: SIGSEGV in PhaseIdealLoop in 32bit jvm
Summary: The CR's test crashes with SIGSEGV when running with "-server -Xcomp" using using 32bit jvm.
Reviewed-by: kvn, never, rasbold

diff -r 60853c6a93b7 -r 825bfb41920c hotspot/src/share/vm/opto/divnode.cpp
--- a/hotspot/src/share/vm/opto/divnode.cpp	Tue May 05 11:02:10 2009 -0700
+++ b/hotspot/src/share/vm/opto/divnode.cpp	Wed May 06 12:04:42 2009 -0700
@@ -298,8 +298,10 @@
 
   // 6732154: Construct both w1 and w2 before transforming, so t
   // doesn't go dead prematurely.
+  // 6837011: We need to transform w2 before w1 because the
+  // transformation of w1 could return t.
+  w2 = phase->transform(w2);
   w1 = phase->transform(w1);
-  w2 = phase->transform(w2);
 
   // w1 = u0*v1 + w1;
   Node* u0v1 = phase->transform(new (phase->C, 3) MulLNode(u0, v1));
diff -r 60853c6a93b7 -r 825bfb41920c hotspot/test/compiler/6837011/Test6837011.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/6837011/Test6837011.java	Wed May 06 12:04:42 2009 -0700
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2009 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/**
+ * @test
+ * @bug 6837011
+ * @summary SIGSEGV in PhaseIdealLoop in 32bit jvm
+ *
+ * @run main/othervm -Xcomp -XX:CompileOnly=Test6837011.main Test6837011
+ */
+
+public class Test6837011 {
+    static boolean var_3 = true;
+
+    public static void main(String[] args) {
+        double var_5;
+        char var_7 = 1;
+        double var_11 = 0;
+
+        do {
+            var_11++;
+            var_5 = (var_7 /= ( var_3 ? ~1L : 3 ) );
+        } while (var_11 < 1);
+    }
+}