# HG changeset patch
# User Peter Hofer <peter.hofer@jku.at>
# Date 1318861751 -7200
# Node ID 97c1d4902e3f1de54eaba0fe4f9bbc2f947bd68f
# Parent  af1319bc4fd56cc607c43dad53bce20af1ba220d
IdealGraphVisualizer: in the server compiler scheduler, detect and handle any cycles in predecessor relations between nodes.

diff -r af1319bc4fd5 -r 97c1d4902e3f src/share/tools/IdealGraphVisualizer/ServerCompiler/src/com/sun/hotspot/igv/servercompiler/ServerCompilerScheduler.java
--- a/src/share/tools/IdealGraphVisualizer/ServerCompiler/src/com/sun/hotspot/igv/servercompiler/ServerCompilerScheduler.java	Tue Oct 18 20:07:52 2011 +0200
+++ b/src/share/tools/IdealGraphVisualizer/ServerCompiler/src/com/sun/hotspot/igv/servercompiler/ServerCompilerScheduler.java	Mon Oct 17 16:29:11 2011 +0200
@@ -111,7 +111,12 @@
                         p = parent;
                         break;
                     }
+
                     p = p.preds.get(0);
+                    if (p == proj) {
+                        // Cycle, stop
+                        break;
+                    }
 
                     if (p.block == null) {
                         p.block = block;