Mercurial > hg > graal-compiler
changeset 22266:e743cde3ff3a
Add ConstantStackCastTest.
author | Josef Eisl <josef.eisl@jku.at> |
---|---|
date | Tue, 21 Jul 2015 10:55:01 +0200 |
parents | b5ed7b253194 |
children | bbfbb5613a62 |
files | graal/com.oracle.graal.lir.jtt/src/com/oracle/graal/lir/jtt/ConstantStackCastTest.java |
diffstat | 1 files changed, 88 insertions(+), 0 deletions(-) [+] |
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--- /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); + } + +}