1 /* 2 * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 import jdk.incubator.code.dialect.core.CoreType; 24 import jdk.incubator.code.dialect.java.JavaOp; 25 import org.testng.annotations.Test; 26 27 import jdk.incubator.code.Block; 28 import jdk.incubator.code.Value; 29 import jdk.incubator.code.bytecode.SlotOp; 30 import jdk.incubator.code.bytecode.SlotSSA; 31 import jdk.incubator.code.dialect.core.CoreOp; 32 import jdk.incubator.code.dialect.java.JavaType; 33 import jdk.incubator.code.dialect.java.MethodRef; 34 35 /* 36 * @test 37 * @modules jdk.incubator.code 38 * @run testng TestSlots 39 */ 40 public class TestSlotOps { 41 42 static void m(int i) { 43 44 } 45 46 @Test 47 public void test() { 48 CoreOp.FuncOp f = build(); 49 System.out.println(f.toText()); 50 51 CoreOp.FuncOp fssa = SlotSSA.transform(f); 52 System.out.println(fssa.toText()); 53 } 54 55 static CoreOp.FuncOp build() { 56 return CoreOp.func("f", CoreType.functionType(JavaType.J_L_STRING)).body(b -> { 57 Block.Builder trueBlock = b.block(); 58 Block.Builder falseBlock = b.block(); 59 Block.Builder exitBlock = b.block(); 60 61 // Entry block 62 { 63 Value nullConstant = b.op(CoreOp.constant(JavaType.J_L_OBJECT, null)); 64 b.op(SlotOp.store(0, nullConstant)); 65 66 b.op(CoreOp.conditionalBranch(b.op(CoreOp.constant(JavaType.BOOLEAN, true)), 67 trueBlock.successor(), falseBlock.successor())); 68 } 69 70 // True block 71 { 72 Value oneConstant = trueBlock.op(CoreOp.constant(JavaType.INT, 1)); 73 trueBlock.op(SlotOp.store(0, oneConstant)); 74 75 Value loadValue = trueBlock.op(SlotOp.load(0, JavaType.INT)); 76 trueBlock.op(JavaOp.invoke(MethodRef.method(TestSlots.class, "m", void.class, int.class), loadValue)); 77 78 Value stringConstant = trueBlock.op(CoreOp.constant(JavaType.J_L_STRING, "TRUE")); 79 trueBlock.op(SlotOp.store(0, stringConstant)); 80 81 trueBlock.op(CoreOp.branch(exitBlock.successor())); 82 } 83 84 // False block 85 { 86 Value stringConstant = falseBlock.op(CoreOp.constant(JavaType.J_L_STRING, "FALSE")); 87 falseBlock.op(SlotOp.store(0, stringConstant)); 88 89 falseBlock.op(CoreOp.branch(exitBlock.successor())); 90 } 91 92 // Exit block 93 { 94 Value loadValue = exitBlock.op(SlotOp.load(0, JavaType.J_L_STRING)); 95 exitBlock.op(CoreOp.return_(loadValue)); 96 } 97 }); 98 } 99 }