--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.compiler.common/src/com/oracle/graal/compiler/common/alloc/TraceStatisticsPrinter.java	Tue Oct 06 17:58:23 2015 +0200
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2015, 2015, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.oracle.graal.compiler.common.alloc;
+
+import java.util.List;
+
+import com.oracle.graal.compiler.common.cfg.AbstractBlockBase;
+import com.oracle.graal.debug.Debug;
+import com.oracle.graal.debug.Debug.Scope;
+import com.oracle.graal.debug.Indent;
+
+public final class TraceStatisticsPrinter {
+    private static final String SEP = ";";
+    private static final int TRACE_DUMP_LEVEL = 3;
+
+    @SuppressWarnings("try")
+    public static <T extends AbstractBlockBase<T>> void printTraceStatistics(TraceBuilder.TraceBuilderResult<T> result, String compilationUnitName) {
+        try (Scope s = Debug.scope("DumpTraceStatistics")) {
+            if (Debug.isLogEnabled(TRACE_DUMP_LEVEL)) {
+                print(result, compilationUnitName);
+            }
+        } catch (Throwable e) {
+            Debug.handle(e);
+        }
+    }
+
+    @SuppressWarnings("try")
+    protected static <T extends AbstractBlockBase<T>> void print(TraceBuilder.TraceBuilderResult<T> result, String compilationUnitName) {
+        List<List<T>> traces = result.getTraces();
+        int numTraces = traces.size();
+
+        try (Indent indent0 = Debug.logAndIndent(TRACE_DUMP_LEVEL, "<tracestatistics>")) {
+            Debug.log(TRACE_DUMP_LEVEL, "<name>%s</name>", compilationUnitName != null ? compilationUnitName : "null");
+            try (Indent indent1 = Debug.logAndIndent(TRACE_DUMP_LEVEL, "<traces>")) {
+                printRawLine("tracenumber", "total", "min", "max", "numBlocks");
+                for (int i = 0; i < numTraces; i++) {
+                    List<T> t = traces.get(i);
+                    double total = 0;
+                    double max = Double.NEGATIVE_INFINITY;
+                    double min = Double.POSITIVE_INFINITY;
+                    for (T block : t) {
+                        double probability = block.probability();
+                        total += probability;
+                        if (probability < min) {
+                            min = probability;
+                        }
+                        if (probability > max) {
+                            max = probability;
+                        }
+                    }
+                    printLine(i, total, min, max, t.size());
+                }
+            }
+            Debug.log(TRACE_DUMP_LEVEL, "</traces>");
+        }
+        Debug.log(TRACE_DUMP_LEVEL, "</tracestatistics>");
+
+    }
+
+    private static void printRawLine(Object tracenr, Object totalTime, Object minProb, Object maxProb, Object numBlocks) {
+        Debug.log(TRACE_DUMP_LEVEL, "%s", String.join(SEP, tracenr.toString(), totalTime.toString(), minProb.toString(), maxProb.toString(), numBlocks.toString()));
+    }
+
+    private static void printLine(int tracenr, double totalTime, double minProb, double maxProb, int numBlocks) {
+        printRawLine(tracenr, totalTime, minProb, maxProb, numBlocks);
+    }
+}

--- a/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/alloc/trace/TraceRegisterAllocationPhase.java	Tue Oct 06 16:23:50 2015 +0200
+++ b/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/alloc/trace/TraceRegisterAllocationPhase.java	Tue Oct 06 17:58:23 2015 +0200
@@ -34,6 +34,7 @@
 import com.oracle.graal.compiler.common.alloc.RegisterAllocationConfig;
 import com.oracle.graal.compiler.common.alloc.TraceBuilder;
 import com.oracle.graal.compiler.common.alloc.TraceBuilder.TraceBuilderResult;
+import com.oracle.graal.compiler.common.alloc.TraceStatisticsPrinter;
 import com.oracle.graal.compiler.common.cfg.AbstractBlockBase;
 import com.oracle.graal.debug.Debug;
 import com.oracle.graal.debug.Debug.Scope;
@@ -76,6 +77,7 @@
         B startBlock = linearScanOrder.get(0);
         assert startBlock.equals(lir.getControlFlowGraph().getStartBlock());
         TraceBuilderResult<B> resultTraces = TraceBuilder.computeTraces(startBlock, linearScanOrder);
+        TraceStatisticsPrinter.printTraceStatistics(resultTraces, lirGenRes.getCompilationUnitName());
 
         Debug.dump(lir, "Before TraceRegisterAllocation");
         int traceNumber = 0;