--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.lir.jtt/src/com/oracle/graal/lir/jtt/ConstantStackCastTest.java	Tue Jul 21 10:55:01 2015 +0200
@@ -0,0 +1,88 @@
+/*
+ * 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.lir.jtt;
+
+import static jdk.internal.jvmci.code.ValueUtil.*;
+import jdk.internal.jvmci.code.*;
+import jdk.internal.jvmci.common.*;
+import jdk.internal.jvmci.meta.*;
+
+import org.junit.*;
+
+import com.oracle.graal.lir.framemap.*;
+import com.oracle.graal.lir.gen.*;
+
+/**
+ * Tests move from a constant to a wider stack slot (e.g. byte constant to integer stack slot).
+ */
+public class ConstantStackCastTest extends LIRTest {
+
+    private static class LoadConstantStackSpec extends LIRTestSpecification {
+        protected final LIRKind dstKind;
+        protected final LIRKind srcKind;
+
+        public LoadConstantStackSpec(LIRKind dstKind, LIRKind srcKind) {
+            this.dstKind = dstKind;
+            this.srcKind = srcKind;
+        }
+
+        @Override
+        public void generate(LIRGeneratorTool gen, Value value) {
+            FrameMapBuilder frameMapBuilder = gen.getResult().getFrameMapBuilder();
+            // create slots
+            StackSlotValue s1 = frameMapBuilder.allocateSpillSlot(dstKind);
+            // move stuff around
+            Value srcValue = isConstant(value) ? getConstant(srcKind, value) : value;
+            gen.emitMove(s1, srcValue);
+            gen.emitBlackhole(s1);
+            setResult(gen.emitMove(s1));
+        }
+
+        private static PrimitiveConstant getConstant(LIRKind srcKind, Value value) {
+
+            switch ((Kind) srcKind.getPlatformKind()) {
+                case Byte:
+                    return JavaConstant.forByte((byte) asConstant(value).asInt());
+                default:
+                    throw JVMCIError.shouldNotReachHere("Kind not supported: " + srcKind);
+            }
+        }
+    }
+
+    private static final LoadConstantStackSpec stackCopyByte = new LoadConstantStackSpec(LIRKind.value(Kind.Int), LIRKind.value(Kind.Byte));
+
+    @LIRIntrinsic
+    public static byte testCopyByte(@SuppressWarnings("unused") LoadConstantStackSpec spec, byte value) {
+        return value;
+    }
+
+    public byte testByte(byte value) {
+        return testCopyByte(stackCopyByte, value);
+    }
+
+    @Test
+    public void runByte() throws Throwable {
+        runTest("testByte", (byte) 0);
+    }
+
+}