Mercurial > hg > graal-jvmci-8
diff graal/Compiler/src/com/sun/c1x/ir/Invoke.java @ 2507:9ec15d6914ca
Pull over of compiler from maxine repository.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:43:22 +0200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/Compiler/src/com/sun/c1x/ir/Invoke.java Wed Apr 27 11:43:22 2011 +0200 @@ -0,0 +1,172 @@ +/* + * Copyright (c) 2009, 2011, 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.sun.c1x.ir; + +import com.sun.c1x.debug.*; +import com.sun.c1x.util.*; +import com.sun.c1x.value.*; +import com.sun.cri.ci.*; +import com.sun.cri.ri.*; + +/** + * The {@code Invoke} instruction represents all kinds of method calls. + * + * @author Ben L. Titzer + */ +public final class Invoke extends StateSplit { + + public final int opcode; + public final Value[] arguments; + public final RiMethod target; + public final RiType returnType; + + /** + * Constructs a new Invoke instruction. + * + * @param opcode the opcode of the invoke + * @param result the result type + * @param args the list of instructions producing arguments to the invocation, including the receiver object + * @param isStatic {@code true} if this call is static (no receiver object) + * @param target the target method being called + * @param stateBefore the state before executing the invocation + */ + public Invoke(int opcode, CiKind result, Value[] args, boolean isStatic, RiMethod target, RiType returnType, FrameState stateBefore) { + super(result, stateBefore); + this.opcode = opcode; + this.arguments = args; + this.target = target; + this.returnType = returnType; + if (isStatic) { + setFlag(Flag.IsStatic); + eliminateNullCheck(); + } else if (args[0].isNonNull() || args[0].kind.isWord()) { + eliminateNullCheck(); + } + } + + /** + * Gets the opcode of this invoke instruction. + * @return the opcode + */ + public int opcode() { + return opcode; + } + + /** + * Checks whether this is an invocation of a static method. + * @return {@code true} if the invocation is a static invocation + */ + public boolean isStatic() { + return checkFlag(Flag.IsStatic); + } + + @Override + public RiType declaredType() { + return returnType; + } + + /** + * Gets the instruction that produces the receiver object for this invocation, if any. + * @return the instruction that produces the receiver object for this invocation if any, {@code null} if this + * invocation does not take a receiver object + */ + public Value receiver() { + assert !isStatic(); + return arguments[0]; + } + + /** + * Gets the target method for this invocation instruction. + * @return the target method + */ + public RiMethod target() { + return target; + } + + /** + * Gets the list of instructions that produce input for this instruction. + * @return the list of instructions that produce input + */ + public Value[] arguments() { + return arguments; + } + + /** + * Checks whether this instruction can trap. + * @return {@code true}, conservatively assuming the called method may throw an exception + */ + @Override + public boolean canTrap() { + return true; + } + + /** + * Checks whether this invocation has a receiver object. + * @return {@code true} if this invocation has a receiver object; {@code false} otherwise, if this is a + * static call + */ + public boolean hasReceiver() { + return !isStatic(); + } + + @Override + public void inputValuesDo(ValueClosure closure) { + for (int i = 0; i < arguments.length; i++) { + Value arg = arguments[i]; + if (arg != null) { + arguments[i] = closure.apply(arg); + assert arguments[i] != null; + } + } + } + + @Override + public void accept(ValueVisitor v) { + v.visitInvoke(this); + } + + public CiKind[] signature() { + CiKind receiver = isStatic() ? null : target.holder().kind(); + return Util.signatureToKinds(target.signature(), receiver); + } + + @Override + public void print(LogStream out) { + int argStart = 0; + if (hasReceiver()) { + out.print(receiver()).print('.'); + argStart = 1; + } + + RiMethod target = target(); + out.print(target.name()).print('('); + Value[] arguments = arguments(); + for (int i = argStart; i < arguments.length; i++) { + if (i > argStart) { + out.print(", "); + } + out.print(arguments[i]); + } + out.print(CiUtil.format(") [method: %H.%n(%p):%r]", target, false)); + } +}