# HG changeset patch
# User Bernhard Urban <bernhard.urban@jku.at>
# Date 1370511367 -7200
# Node ID 1dd50a788ab7d6810c42ecb02d1084a2a26388f8
# Parent  8fdee70e2e1f104f340aaab358159b408d1d68f4
unittest: add test for OptCanonicalizeReads

diff -r 8fdee70e2e1f -r 1dd50a788ab7 graal/com.oracle.graal.hotspot.test/src/com/oracle/graal/hotspot/test/AheadOfTimeCompilationTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.hotspot.test/src/com/oracle/graal/hotspot/test/AheadOfTimeCompilationTest.java	Thu Jun 06 11:36:07 2013 +0200
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2013, 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.hotspot.test;
+
+import static com.oracle.graal.api.code.CodeUtil.*;
+
+import org.junit.*;
+
+import com.oracle.graal.api.code.*;
+import com.oracle.graal.api.code.CallingConvention.Type;
+import com.oracle.graal.api.meta.*;
+import com.oracle.graal.compiler.*;
+import com.oracle.graal.compiler.test.*;
+import com.oracle.graal.hotspot.phases.*;
+import com.oracle.graal.java.*;
+import com.oracle.graal.nodes.*;
+import com.oracle.graal.nodes.extended.*;
+import com.oracle.graal.phases.*;
+import com.oracle.graal.phases.PhasePlan.PhasePosition;
+
+/**
+ * use
+ * 
+ * <pre>
+ * mx unittest AheadOfTimeCompilationTest @-XX:CompileCommand='print,*AheadOfTimeCompilationTest.*'
+ * </pre>
+ * 
+ * to print disassembly.
+ */
+public class AheadOfTimeCompilationTest extends GraalCompilerTest {
+
+    public static final Object STATICFINALOBJECT = new Object();
+
+    public static Object getStaticFinalObject() {
+        return AheadOfTimeCompilationTest.STATICFINALOBJECT;
+    }
+
+    @Test
+    public void testStaticFinalObject() {
+        StructuredGraph result1 = compile("getStaticFinalObject", false);
+        assert result1.getNodes().filter(ConstantNode.class).count() == 1;
+        assert result1.getNodes(FloatingReadNode.class).count() == 0;
+
+        StructuredGraph result2 = compile("getStaticFinalObject", true);
+        assert result2.getNodes().filter(ConstantNode.class).count() == 1;
+        assert result2.getNodes(FloatingReadNode.class).count() == 1;
+    }
+
+    private StructuredGraph compile(String test, boolean compileAOT) {
+        StructuredGraph graph = parse(test);
+        ResolvedJavaMethod method = graph.method();
+
+        boolean originalSetting = GraalOptions.OptCanonicalizeReads.getValue();
+        GraalOptions.OptCanonicalizeReads.setValue(!compileAOT);
+        PhasePlan phasePlan = new PhasePlan();
+        final StructuredGraph graphCopy = graph.copy();
+        GraphBuilderPhase graphBuilderPhase = new GraphBuilderPhase(runtime, GraphBuilderConfiguration.getDefault(), OptimisticOptimizations.ALL);
+        phasePlan.addPhase(PhasePosition.AFTER_PARSING, graphBuilderPhase);
+        phasePlan.addPhase(PhasePosition.LOW_LEVEL, new WriteBarrierAdditionPhase());
+        editPhasePlan(method, graph, phasePlan);
+        CallingConvention cc = getCallingConvention(runtime, Type.JavaCallee, graph.method(), false);
+        final CompilationResult compResult = GraalCompiler.compileGraph(graph, cc, method, runtime, replacements, backend, runtime().getTarget(), null, phasePlan, OptimisticOptimizations.ALL,
+                        new SpeculationLog());
+        addMethod(method, compResult, graphCopy);
+
+        GraalOptions.OptCanonicalizeReads.setValue(originalSetting);
+
+        return graph;
+    }
+}