1 /* 2 * Copyright (c) 1994, 2003, 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.tools.tree; 27 28 import sun.tools.java.*; 29 import sun.tools.asm.Assembler; 30 import sun.tools.asm.Label; 31 32 /** 33 * WARNING: The contents of this source file are not part of any 34 * supported API. Code that depends on them does so at its own risk: 35 * they are subject to change or removal without notice. 36 */ 37 public 38 class GreaterOrEqualExpression extends BinaryCompareExpression { 39 /** 40 * constructor 41 */ GreaterOrEqualExpression(long where, Expression left, Expression right)42 public GreaterOrEqualExpression(long where, Expression left, Expression right) { 43 super(GE, where, left, right); 44 } 45 46 /** 47 * Evaluate 48 */ eval(int a, int b)49 Expression eval(int a, int b) { 50 return new BooleanExpression(where, a >= b); 51 } eval(long a, long b)52 Expression eval(long a, long b) { 53 return new BooleanExpression(where, a >= b); 54 } eval(float a, float b)55 Expression eval(float a, float b) { 56 return new BooleanExpression(where, a >= b); 57 } eval(double a, double b)58 Expression eval(double a, double b) { 59 return new BooleanExpression(where, a >= b); 60 } 61 62 /** 63 * Simplify 64 */ simplify()65 Expression simplify() { 66 if (left.isConstant() && !right.isConstant()) { 67 return new LessOrEqualExpression(where, right, left); 68 } 69 return this; 70 } 71 72 /** 73 * Code 74 */ codeBranch(Environment env, Context ctx, Assembler asm, Label lbl, boolean whenTrue)75 void codeBranch(Environment env, Context ctx, Assembler asm, Label lbl, boolean whenTrue) { 76 left.codeValue(env, ctx, asm); 77 switch (left.type.getTypeCode()) { 78 case TC_INT: 79 if (!right.equals(0)) { 80 right.codeValue(env, ctx, asm); 81 asm.add(where, whenTrue ? opc_if_icmpge : opc_if_icmplt, lbl, whenTrue); 82 return; 83 } 84 break; 85 case TC_LONG: 86 right.codeValue(env, ctx, asm); 87 asm.add(where, opc_lcmp); 88 break; 89 case TC_FLOAT: 90 right.codeValue(env, ctx, asm); 91 asm.add(where, opc_fcmpl); 92 break; 93 case TC_DOUBLE: 94 right.codeValue(env, ctx, asm); 95 asm.add(where, opc_dcmpl); 96 break; 97 default: 98 throw new CompilerError("Unexpected Type"); 99 } 100 asm.add(where, whenTrue ? opc_ifge : opc_iflt, lbl, whenTrue); 101 } 102 } 103