--- /dev/null 2017-01-22 10:16:57.869617664 -0800 +++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/type/PrimitiveStamp.java 2017-02-15 16:57:11.976936690 -0800 @@ -0,0 +1,82 @@ +/* + * Copyright (c) 2014, 2014, 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 org.graalvm.compiler.core.common.type; + +import jdk.vm.ci.meta.Constant; +import jdk.vm.ci.meta.MemoryAccessProvider; + +/** + * Type describing primitive values. + */ +public abstract class PrimitiveStamp extends ArithmeticStamp { + + private final int bits; + + protected PrimitiveStamp(int bits, ArithmeticOpTable ops) { + super(ops); + this.bits = bits; + } + + /** + * The width in bits of the value described by this stamp. + */ + public int getBits() { + return bits; + } + + public static int getBits(Stamp stamp) { + if (stamp instanceof PrimitiveStamp) { + return ((PrimitiveStamp) stamp).getBits(); + } else { + return 0; + } + } + + @Override + public Constant readConstant(MemoryAccessProvider provider, Constant base, long displacement) { + return provider.readPrimitiveConstant(getStackKind(), base, displacement, getBits()); + } + + @Override + public int hashCode() { + final int prime = 31; + int result = super.hashCode(); + result = prime * result + bits; + return result; + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + if (!(obj instanceof PrimitiveStamp)) { + return false; + } + PrimitiveStamp other = (PrimitiveStamp) obj; + if (bits != other.bits) { + return false; + } + return super.equals(obj); + } +}