author | jlahoda |
Wed, 27 Nov 2019 09:00:01 +0100 | |
changeset 59285 | 7799a51dbe30 |
parent 54568 | b2ed96c35687 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package com.sun.tools.javac.jvm; |
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import com.sun.tools.javac.code.*; |
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import com.sun.tools.javac.code.Symbol.*; |
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import com.sun.tools.javac.resources.CompilerProperties.Errors; |
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import com.sun.tools.javac.util.*; |
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import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition; |
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import java.util.function.ToIntBiFunction; |
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import java.util.function.ToIntFunction; |
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import static com.sun.tools.javac.code.TypeTag.BOT; |
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import static com.sun.tools.javac.code.TypeTag.INT; |
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import static com.sun.tools.javac.jvm.ByteCodes.*; |
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import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Class; |
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import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Double; |
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import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Fieldref; |
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import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Float; |
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import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Integer; |
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import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_InterfaceMethodref; |
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import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Long; |
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import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_MethodHandle; |
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import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_MethodType; |
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import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Methodref; |
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import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_String; |
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import static com.sun.tools.javac.jvm.UninitializedType.*; |
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import static com.sun.tools.javac.jvm.ClassWriter.StackMapTableFrame; |
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import java.util.Arrays; |
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/** An internal structure that corresponds to the code attribute of |
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* methods in a classfile. The class also provides some utility operations to |
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* generate bytecode instructions. |
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* |
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* <p><b>This is NOT part of any supported API. |
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* If you write code that depends on this, you do so at your own risk. |
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* This code and its internal interfaces are subject to change or |
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* deletion without notice.</b> |
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*/ |
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public class Code { |
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public final boolean debugCode; |
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public final boolean needStackMap; |
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public enum StackMapFormat { |
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NONE, |
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CLDC { |
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Name getAttributeName(Names names) { |
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return names.StackMap; |
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} |
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}, |
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JSR202 { |
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Name getAttributeName(Names names) { |
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return names.StackMapTable; |
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} |
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}; |
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Name getAttributeName(Names names) { |
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return names.empty; |
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} |
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} |
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final Types types; |
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final Symtab syms; |
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final PoolWriter poolWriter; |
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/*---------- classfile fields: --------------- */ |
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/** The maximum stack size. |
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*/ |
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public int max_stack = 0; |
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/** The maximum number of local variable slots. |
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*/ |
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public int max_locals = 0; |
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/** The code buffer. |
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*/ |
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public byte[] code = new byte[64]; |
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/** the current code pointer. |
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*/ |
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public int cp = 0; |
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/** Check the code against VM spec limits; if |
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* problems report them and return true. |
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*/ |
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public boolean checkLimits(DiagnosticPosition pos, Log log) { |
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if (cp > ClassFile.MAX_CODE) { |
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log.error(pos, Errors.LimitCode); |
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return true; |
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} |
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if (max_locals > ClassFile.MAX_LOCALS) { |
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log.error(pos, Errors.LimitLocals); |
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return true; |
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} |
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if (max_stack > ClassFile.MAX_STACK) { |
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log.error(pos, Errors.LimitStack); |
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return true; |
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} |
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return false; |
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} |
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/** A buffer for expression catch data. Each enter is a vector |
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* of four unsigned shorts. |
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*/ |
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ListBuffer<char[]> catchInfo = new ListBuffer<>(); |
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/** A buffer for line number information. Each entry is a vector |
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* of two unsigned shorts. |
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*/ |
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List<char[]> lineInfo = List.nil(); // handled in stack fashion |
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/** The CharacterRangeTable |
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*/ |
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public CRTable crt; |
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/*---------- internal fields: --------------- */ |
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/** Are we generating code with jumps ≥ 32K? |
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*/ |
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public boolean fatcode; |
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/** Code generation enabled? |
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*/ |
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private boolean alive = true; |
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/** The current machine state (registers and stack). |
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*/ |
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State state; |
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/** Is it forbidden to compactify code, because something is |
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* pointing to current location? |
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*/ |
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private boolean fixedPc = false; |
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/** The next available register. |
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*/ |
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public int nextreg = 0; |
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/** A chain for jumps to be resolved before the next opcode is emitted. |
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* We do this lazily to avoid jumps to jumps. |
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*/ |
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Chain pendingJumps = null; |
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/** The position of the currently statement, if we are at the |
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* start of this statement, NOPOS otherwise. |
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* We need this to emit line numbers lazily, which we need to do |
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* because of jump-to-jump optimization. |
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*/ |
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int pendingStatPos = Position.NOPOS; |
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/** Set true when a stackMap is needed at the current PC. */ |
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boolean pendingStackMap = false; |
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/** The stack map format to be generated. */ |
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StackMapFormat stackMap; |
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/** Switch: emit variable debug info. |
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*/ |
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boolean varDebugInfo; |
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/** Switch: emit line number info. |
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*/ |
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boolean lineDebugInfo; |
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/** Emit line number info if map supplied |
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*/ |
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Position.LineMap lineMap; |
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final MethodSymbol meth; |
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private int letExprStackPos = 0; |
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/** Construct a code object, given the settings of the fatcode, |
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* debugging info switches and the CharacterRangeTable. |
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*/ |
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public Code(MethodSymbol meth, |
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boolean fatcode, |
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Position.LineMap lineMap, |
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boolean varDebugInfo, |
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StackMapFormat stackMap, |
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boolean debugCode, |
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CRTable crt, |
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Symtab syms, |
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Types types, |
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PoolWriter poolWriter) { |
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this.meth = meth; |
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this.fatcode = fatcode; |
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this.lineMap = lineMap; |
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this.lineDebugInfo = lineMap != null; |
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this.varDebugInfo = varDebugInfo; |
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this.crt = crt; |
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this.syms = syms; |
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this.types = types; |
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this.poolWriter = poolWriter; |
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this.debugCode = debugCode; |
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this.stackMap = stackMap; |
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switch (stackMap) { |
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case CLDC: |
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case JSR202: |
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this.needStackMap = true; |
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break; |
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default: |
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this.needStackMap = false; |
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} |
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state = new State(); |
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lvar = new LocalVar[20]; |
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} |
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/* ************************************************************************** |
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* Typecodes & related stuff |
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****************************************************************************/ |
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/** Given a type, return its type code (used implicitly in the |
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* JVM architecture). |
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*/ |
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public static int typecode(Type type) { |
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switch (type.getTag()) { |
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case BYTE: return BYTEcode; |
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case SHORT: return SHORTcode; |
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case CHAR: return CHARcode; |
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case INT: return INTcode; |
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case LONG: return LONGcode; |
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case FLOAT: return FLOATcode; |
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case DOUBLE: return DOUBLEcode; |
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case BOOLEAN: return BYTEcode; |
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case VOID: return VOIDcode; |
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case CLASS: |
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case ARRAY: |
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case METHOD: |
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case BOT: |
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case TYPEVAR: |
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case UNINITIALIZED_THIS: |
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case UNINITIALIZED_OBJECT: |
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return OBJECTcode; |
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default: throw new AssertionError("typecode " + type.getTag()); |
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} |
263 |
} |
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/** Collapse type code for subtypes of int to INTcode. |
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266 |
*/ |
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267 |
public static int truncate(int tc) { |
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switch (tc) { |
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case BYTEcode: case SHORTcode: case CHARcode: return INTcode; |
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default: return tc; |
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} |
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} |
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/** The width in bytes of objects of the type. |
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*/ |
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276 |
public static int width(int typecode) { |
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switch (typecode) { |
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case LONGcode: case DOUBLEcode: return 2; |
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case VOIDcode: return 0; |
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280 |
default: return 1; |
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281 |
} |
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282 |
} |
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283 |
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284 |
public static int width(Type type) { |
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285 |
return type == null ? 1 : width(typecode(type)); |
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286 |
} |
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287 |
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288 |
/** The total width taken up by a vector of objects. |
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289 |
*/ |
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290 |
public static int width(List<Type> types) { |
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291 |
int w = 0; |
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292 |
for (List<Type> l = types; l.nonEmpty(); l = l.tail) |
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293 |
w = w + width(l.head); |
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294 |
return w; |
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295 |
} |
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296 |
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297 |
/** Given a type, return its code for allocating arrays of that type. |
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298 |
*/ |
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299 |
public static int arraycode(Type type) { |
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switch (type.getTag()) { |
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case BYTE: return 8; |
302 |
case BOOLEAN: return 4; |
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case SHORT: return 9; |
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304 |
case CHAR: return 5; |
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305 |
case INT: return 10; |
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306 |
case LONG: return 11; |
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307 |
case FLOAT: return 6; |
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308 |
case DOUBLE: return 7; |
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309 |
case CLASS: return 0; |
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310 |
case ARRAY: return 1; |
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311 |
default: throw new AssertionError("arraycode " + type); |
|
312 |
} |
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313 |
} |
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314 |
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315 |
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316 |
/* ************************************************************************** |
|
317 |
* Emit code |
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318 |
****************************************************************************/ |
|
319 |
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320 |
/** The current output code pointer. |
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321 |
*/ |
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public int curCP() { |
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/* |
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* This method has side-effects because calling it can indirectly provoke |
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* extra code generation, like goto instructions, depending on the context |
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* where it's called. |
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* Use with care or even better avoid using it. |
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*/ |
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if (pendingJumps != null) { |
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resolvePending(); |
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} |
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if (pendingStatPos != Position.NOPOS) { |
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markStatBegin(); |
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334 |
} |
10 | 335 |
fixedPc = true; |
336 |
return cp; |
|
337 |
} |
|
338 |
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339 |
/** Emit a byte of code. |
|
340 |
*/ |
|
341 |
private void emit1(int od) { |
|
342 |
if (!alive) return; |
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code = ArrayUtils.ensureCapacity(code, cp); |
10 | 344 |
code[cp++] = (byte)od; |
345 |
} |
|
346 |
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347 |
/** Emit two bytes of code. |
|
348 |
*/ |
|
349 |
private void emit2(int od) { |
|
350 |
if (!alive) return; |
|
351 |
if (cp + 2 > code.length) { |
|
352 |
emit1(od >> 8); |
|
353 |
emit1(od); |
|
354 |
} else { |
|
355 |
code[cp++] = (byte)(od >> 8); |
|
356 |
code[cp++] = (byte)od; |
|
357 |
} |
|
358 |
} |
|
359 |
||
360 |
/** Emit four bytes of code. |
|
361 |
*/ |
|
362 |
public void emit4(int od) { |
|
363 |
if (!alive) return; |
|
364 |
if (cp + 4 > code.length) { |
|
365 |
emit1(od >> 24); |
|
366 |
emit1(od >> 16); |
|
367 |
emit1(od >> 8); |
|
368 |
emit1(od); |
|
369 |
} else { |
|
370 |
code[cp++] = (byte)(od >> 24); |
|
371 |
code[cp++] = (byte)(od >> 16); |
|
372 |
code[cp++] = (byte)(od >> 8); |
|
373 |
code[cp++] = (byte)od; |
|
374 |
} |
|
375 |
} |
|
376 |
||
377 |
/** Emit an opcode. |
|
378 |
*/ |
|
379 |
private void emitop(int op) { |
|
380 |
if (pendingJumps != null) resolvePending(); |
|
381 |
if (alive) { |
|
382 |
if (pendingStatPos != Position.NOPOS) |
|
383 |
markStatBegin(); |
|
384 |
if (pendingStackMap) { |
|
385 |
pendingStackMap = false; |
|
386 |
emitStackMap(); |
|
387 |
} |
|
388 |
if (debugCode) |
|
389 |
System.err.println("emit@" + cp + " stack=" + |
|
390 |
state.stacksize + ": " + |
|
391 |
mnem(op)); |
|
392 |
emit1(op); |
|
393 |
} |
|
394 |
} |
|
395 |
||
396 |
void postop() { |
|
51563
de411d537aae
8206986: Compiler support for Switch Expressions (Preview)
jlahoda
parents:
48513
diff
changeset
|
397 |
Assert.check(alive || isStatementStart()); |
10 | 398 |
} |
399 |
||
16801 | 400 |
/** Emit a ldc (or ldc_w) instruction, taking into account operand size |
401 |
*/ |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
402 |
public void emitLdc(LoadableConstant constant) { |
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
403 |
int od = poolWriter.putConstant(constant); |
16801 | 404 |
if (od <= 255) { |
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
405 |
emitop1(ldc1, od, constant); |
16801 | 406 |
} |
407 |
else { |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
408 |
emitop2(ldc2, od, constant); |
16801 | 409 |
} |
410 |
} |
|
411 |
||
10 | 412 |
/** Emit a multinewarray instruction. |
413 |
*/ |
|
414 |
public void emitMultianewarray(int ndims, int type, Type arrayType) { |
|
415 |
emitop(multianewarray); |
|
416 |
if (!alive) return; |
|
417 |
emit2(type); |
|
418 |
emit1(ndims); |
|
419 |
state.pop(ndims); |
|
420 |
state.push(arrayType); |
|
421 |
} |
|
422 |
||
423 |
/** Emit newarray. |
|
424 |
*/ |
|
425 |
public void emitNewarray(int elemcode, Type arrayType) { |
|
426 |
emitop(newarray); |
|
427 |
if (!alive) return; |
|
428 |
emit1(elemcode); |
|
429 |
state.pop(1); // count |
|
430 |
state.push(arrayType); |
|
431 |
} |
|
432 |
||
433 |
/** Emit anewarray. |
|
434 |
*/ |
|
435 |
public void emitAnewarray(int od, Type arrayType) { |
|
436 |
emitop(anewarray); |
|
437 |
if (!alive) return; |
|
438 |
emit2(od); |
|
439 |
state.pop(1); |
|
440 |
state.push(arrayType); |
|
441 |
} |
|
442 |
||
443 |
/** Emit an invokeinterface instruction. |
|
444 |
*/ |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
445 |
public void emitInvokeinterface(Symbol member, Type mtype) { |
10 | 446 |
int argsize = width(mtype.getParameterTypes()); |
447 |
emitop(invokeinterface); |
|
448 |
if (!alive) return; |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
449 |
emit2(poolWriter.putMember(member)); |
10 | 450 |
emit1(argsize + 1); |
451 |
emit1(0); |
|
452 |
state.pop(argsize + 1); |
|
453 |
state.push(mtype.getReturnType()); |
|
454 |
} |
|
455 |
||
456 |
/** Emit an invokespecial instruction. |
|
457 |
*/ |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
458 |
public void emitInvokespecial(Symbol member, Type mtype) { |
10 | 459 |
int argsize = width(mtype.getParameterTypes()); |
460 |
emitop(invokespecial); |
|
461 |
if (!alive) return; |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
462 |
emit2(poolWriter.putMember(member)); |
10 | 463 |
state.pop(argsize); |
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
464 |
if (member.isConstructor()) |
10 | 465 |
state.markInitialized((UninitializedType)state.peek()); |
466 |
state.pop(1); |
|
467 |
state.push(mtype.getReturnType()); |
|
468 |
} |
|
469 |
||
470 |
/** Emit an invokestatic instruction. |
|
471 |
*/ |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
472 |
public void emitInvokestatic(Symbol member, Type mtype) { |
10 | 473 |
int argsize = width(mtype.getParameterTypes()); |
474 |
emitop(invokestatic); |
|
475 |
if (!alive) return; |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
476 |
emit2(poolWriter.putMember(member)); |
10 | 477 |
state.pop(argsize); |
478 |
state.push(mtype.getReturnType()); |
|
479 |
} |
|
480 |
||
481 |
/** Emit an invokevirtual instruction. |
|
482 |
*/ |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
483 |
public void emitInvokevirtual(Symbol member, Type mtype) { |
10 | 484 |
int argsize = width(mtype.getParameterTypes()); |
485 |
emitop(invokevirtual); |
|
486 |
if (!alive) return; |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
487 |
emit2(poolWriter.putMember(member)); |
10 | 488 |
state.pop(argsize + 1); |
489 |
state.push(mtype.getReturnType()); |
|
490 |
} |
|
491 |
||
2723
b659ca23d5f5
6829189: Java programming with JSR 292 needs language support
jrose
parents:
1264
diff
changeset
|
492 |
/** Emit an invokedynamic instruction. |
b659ca23d5f5
6829189: Java programming with JSR 292 needs language support
jrose
parents:
1264
diff
changeset
|
493 |
*/ |
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
494 |
public void emitInvokedynamic(DynamicMethodSymbol dynMember, Type mtype) { |
2723
b659ca23d5f5
6829189: Java programming with JSR 292 needs language support
jrose
parents:
1264
diff
changeset
|
495 |
int argsize = width(mtype.getParameterTypes()); |
21711
1118b43b5111
8027142: Invokedynamic instructions don't get line number table entries
jlahoda
parents:
21703
diff
changeset
|
496 |
emitop(invokedynamic); |
2723
b659ca23d5f5
6829189: Java programming with JSR 292 needs language support
jrose
parents:
1264
diff
changeset
|
497 |
if (!alive) return; |
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
498 |
emit2(poolWriter.putDynamic(dynMember)); |
2723
b659ca23d5f5
6829189: Java programming with JSR 292 needs language support
jrose
parents:
1264
diff
changeset
|
499 |
emit2(0); |
b659ca23d5f5
6829189: Java programming with JSR 292 needs language support
jrose
parents:
1264
diff
changeset
|
500 |
state.pop(argsize); |
b659ca23d5f5
6829189: Java programming with JSR 292 needs language support
jrose
parents:
1264
diff
changeset
|
501 |
state.push(mtype.getReturnType()); |
b659ca23d5f5
6829189: Java programming with JSR 292 needs language support
jrose
parents:
1264
diff
changeset
|
502 |
} |
b659ca23d5f5
6829189: Java programming with JSR 292 needs language support
jrose
parents:
1264
diff
changeset
|
503 |
|
10 | 504 |
/** Emit an opcode with no operand field. |
505 |
*/ |
|
506 |
public void emitop0(int op) { |
|
507 |
emitop(op); |
|
508 |
if (!alive) return; |
|
509 |
switch (op) { |
|
510 |
case aaload: { |
|
511 |
state.pop(1);// index |
|
512 |
Type a = state.stack[state.stacksize-1]; |
|
29777
95a89a2efd89
7040592: Gen.java: fix code for handling 'null' literal when expected type is array
sadayapalam
parents:
29772
diff
changeset
|
513 |
Assert.check(!a.hasTag(BOT)); // null type as is cannot be indexed. |
10 | 514 |
state.pop(1); |
29777
95a89a2efd89
7040592: Gen.java: fix code for handling 'null' literal when expected type is array
sadayapalam
parents:
29772
diff
changeset
|
515 |
state.push(types.erasure(types.elemtype(a))); } |
10 | 516 |
break; |
517 |
case goto_: |
|
518 |
markDead(); |
|
519 |
break; |
|
520 |
case nop: |
|
521 |
case ineg: |
|
522 |
case lneg: |
|
523 |
case fneg: |
|
524 |
case dneg: |
|
525 |
break; |
|
526 |
case aconst_null: |
|
527 |
state.push(syms.botType); |
|
528 |
break; |
|
529 |
case iconst_m1: |
|
530 |
case iconst_0: |
|
531 |
case iconst_1: |
|
532 |
case iconst_2: |
|
533 |
case iconst_3: |
|
534 |
case iconst_4: |
|
535 |
case iconst_5: |
|
536 |
case iload_0: |
|
537 |
case iload_1: |
|
538 |
case iload_2: |
|
539 |
case iload_3: |
|
540 |
state.push(syms.intType); |
|
541 |
break; |
|
542 |
case lconst_0: |
|
543 |
case lconst_1: |
|
544 |
case lload_0: |
|
545 |
case lload_1: |
|
546 |
case lload_2: |
|
547 |
case lload_3: |
|
548 |
state.push(syms.longType); |
|
549 |
break; |
|
550 |
case fconst_0: |
|
551 |
case fconst_1: |
|
552 |
case fconst_2: |
|
553 |
case fload_0: |
|
554 |
case fload_1: |
|
555 |
case fload_2: |
|
556 |
case fload_3: |
|
557 |
state.push(syms.floatType); |
|
558 |
break; |
|
559 |
case dconst_0: |
|
560 |
case dconst_1: |
|
561 |
case dload_0: |
|
562 |
case dload_1: |
|
563 |
case dload_2: |
|
564 |
case dload_3: |
|
565 |
state.push(syms.doubleType); |
|
566 |
break; |
|
567 |
case aload_0: |
|
568 |
state.push(lvar[0].sym.type); |
|
569 |
break; |
|
570 |
case aload_1: |
|
571 |
state.push(lvar[1].sym.type); |
|
572 |
break; |
|
573 |
case aload_2: |
|
574 |
state.push(lvar[2].sym.type); |
|
575 |
break; |
|
576 |
case aload_3: |
|
577 |
state.push(lvar[3].sym.type); |
|
578 |
break; |
|
579 |
case iaload: |
|
580 |
case baload: |
|
581 |
case caload: |
|
582 |
case saload: |
|
583 |
state.pop(2); |
|
584 |
state.push(syms.intType); |
|
585 |
break; |
|
586 |
case laload: |
|
587 |
state.pop(2); |
|
588 |
state.push(syms.longType); |
|
589 |
break; |
|
590 |
case faload: |
|
591 |
state.pop(2); |
|
592 |
state.push(syms.floatType); |
|
593 |
break; |
|
594 |
case daload: |
|
595 |
state.pop(2); |
|
596 |
state.push(syms.doubleType); |
|
597 |
break; |
|
598 |
case istore_0: |
|
599 |
case istore_1: |
|
600 |
case istore_2: |
|
601 |
case istore_3: |
|
602 |
case fstore_0: |
|
603 |
case fstore_1: |
|
604 |
case fstore_2: |
|
605 |
case fstore_3: |
|
606 |
case astore_0: |
|
607 |
case astore_1: |
|
608 |
case astore_2: |
|
609 |
case astore_3: |
|
610 |
case pop: |
|
611 |
case lshr: |
|
612 |
case lshl: |
|
613 |
case lushr: |
|
614 |
state.pop(1); |
|
615 |
break; |
|
616 |
case areturn: |
|
617 |
case ireturn: |
|
618 |
case freturn: |
|
8032 | 619 |
Assert.check(state.nlocks == 0); |
10 | 620 |
state.pop(1); |
621 |
markDead(); |
|
622 |
break; |
|
623 |
case athrow: |
|
624 |
state.pop(1); |
|
625 |
markDead(); |
|
626 |
break; |
|
627 |
case lstore_0: |
|
628 |
case lstore_1: |
|
629 |
case lstore_2: |
|
630 |
case lstore_3: |
|
631 |
case dstore_0: |
|
632 |
case dstore_1: |
|
633 |
case dstore_2: |
|
634 |
case dstore_3: |
|
635 |
case pop2: |
|
636 |
state.pop(2); |
|
637 |
break; |
|
638 |
case lreturn: |
|
639 |
case dreturn: |
|
8032 | 640 |
Assert.check(state.nlocks == 0); |
10 | 641 |
state.pop(2); |
642 |
markDead(); |
|
643 |
break; |
|
644 |
case dup: |
|
645 |
state.push(state.stack[state.stacksize-1]); |
|
646 |
break; |
|
647 |
case return_: |
|
8032 | 648 |
Assert.check(state.nlocks == 0); |
10 | 649 |
markDead(); |
650 |
break; |
|
651 |
case arraylength: |
|
652 |
state.pop(1); |
|
653 |
state.push(syms.intType); |
|
654 |
break; |
|
655 |
case isub: |
|
656 |
case iadd: |
|
657 |
case imul: |
|
658 |
case idiv: |
|
659 |
case imod: |
|
660 |
case ishl: |
|
661 |
case ishr: |
|
662 |
case iushr: |
|
663 |
case iand: |
|
664 |
case ior: |
|
665 |
case ixor: |
|
666 |
state.pop(1); |
|
667 |
// state.pop(1); |
|
668 |
// state.push(syms.intType); |
|
669 |
break; |
|
670 |
case aastore: |
|
671 |
state.pop(3); |
|
672 |
break; |
|
673 |
case land: |
|
674 |
case lor: |
|
675 |
case lxor: |
|
676 |
case lmod: |
|
677 |
case ldiv: |
|
678 |
case lmul: |
|
679 |
case lsub: |
|
680 |
case ladd: |
|
681 |
state.pop(2); |
|
682 |
break; |
|
683 |
case lcmp: |
|
684 |
state.pop(4); |
|
685 |
state.push(syms.intType); |
|
686 |
break; |
|
687 |
case l2i: |
|
688 |
state.pop(2); |
|
689 |
state.push(syms.intType); |
|
690 |
break; |
|
691 |
case i2l: |
|
692 |
state.pop(1); |
|
693 |
state.push(syms.longType); |
|
694 |
break; |
|
695 |
case i2f: |
|
696 |
state.pop(1); |
|
697 |
state.push(syms.floatType); |
|
698 |
break; |
|
699 |
case i2d: |
|
700 |
state.pop(1); |
|
701 |
state.push(syms.doubleType); |
|
702 |
break; |
|
703 |
case l2f: |
|
704 |
state.pop(2); |
|
705 |
state.push(syms.floatType); |
|
706 |
break; |
|
707 |
case l2d: |
|
708 |
state.pop(2); |
|
709 |
state.push(syms.doubleType); |
|
710 |
break; |
|
711 |
case f2i: |
|
712 |
state.pop(1); |
|
713 |
state.push(syms.intType); |
|
714 |
break; |
|
715 |
case f2l: |
|
716 |
state.pop(1); |
|
717 |
state.push(syms.longType); |
|
718 |
break; |
|
719 |
case f2d: |
|
720 |
state.pop(1); |
|
721 |
state.push(syms.doubleType); |
|
722 |
break; |
|
723 |
case d2i: |
|
724 |
state.pop(2); |
|
725 |
state.push(syms.intType); |
|
726 |
break; |
|
727 |
case d2l: |
|
728 |
state.pop(2); |
|
729 |
state.push(syms.longType); |
|
730 |
break; |
|
731 |
case d2f: |
|
732 |
state.pop(2); |
|
733 |
state.push(syms.floatType); |
|
734 |
break; |
|
735 |
case tableswitch: |
|
736 |
case lookupswitch: |
|
737 |
state.pop(1); |
|
738 |
// the caller is responsible for patching up the state |
|
739 |
break; |
|
740 |
case dup_x1: { |
|
741 |
Type val1 = state.pop1(); |
|
742 |
Type val2 = state.pop1(); |
|
743 |
state.push(val1); |
|
744 |
state.push(val2); |
|
745 |
state.push(val1); |
|
746 |
break; |
|
747 |
} |
|
748 |
case bastore: |
|
749 |
state.pop(3); |
|
750 |
break; |
|
751 |
case int2byte: |
|
752 |
case int2char: |
|
753 |
case int2short: |
|
754 |
break; |
|
755 |
case fmul: |
|
756 |
case fadd: |
|
757 |
case fsub: |
|
758 |
case fdiv: |
|
759 |
case fmod: |
|
760 |
state.pop(1); |
|
761 |
break; |
|
762 |
case castore: |
|
763 |
case iastore: |
|
764 |
case fastore: |
|
765 |
case sastore: |
|
766 |
state.pop(3); |
|
767 |
break; |
|
768 |
case lastore: |
|
769 |
case dastore: |
|
770 |
state.pop(4); |
|
771 |
break; |
|
772 |
case dup2: |
|
773 |
if (state.stack[state.stacksize-1] != null) { |
|
774 |
Type value1 = state.pop1(); |
|
775 |
Type value2 = state.pop1(); |
|
776 |
state.push(value2); |
|
777 |
state.push(value1); |
|
778 |
state.push(value2); |
|
779 |
state.push(value1); |
|
780 |
} else { |
|
781 |
Type value = state.pop2(); |
|
782 |
state.push(value); |
|
783 |
state.push(value); |
|
784 |
} |
|
785 |
break; |
|
786 |
case dup2_x1: |
|
787 |
if (state.stack[state.stacksize-1] != null) { |
|
788 |
Type value1 = state.pop1(); |
|
789 |
Type value2 = state.pop1(); |
|
790 |
Type value3 = state.pop1(); |
|
791 |
state.push(value2); |
|
792 |
state.push(value1); |
|
793 |
state.push(value3); |
|
794 |
state.push(value2); |
|
795 |
state.push(value1); |
|
796 |
} else { |
|
797 |
Type value1 = state.pop2(); |
|
798 |
Type value2 = state.pop1(); |
|
799 |
state.push(value1); |
|
800 |
state.push(value2); |
|
801 |
state.push(value1); |
|
802 |
} |
|
803 |
break; |
|
804 |
case dup2_x2: |
|
805 |
if (state.stack[state.stacksize-1] != null) { |
|
806 |
Type value1 = state.pop1(); |
|
807 |
Type value2 = state.pop1(); |
|
808 |
if (state.stack[state.stacksize-1] != null) { |
|
809 |
// form 1 |
|
810 |
Type value3 = state.pop1(); |
|
811 |
Type value4 = state.pop1(); |
|
812 |
state.push(value2); |
|
813 |
state.push(value1); |
|
814 |
state.push(value4); |
|
815 |
state.push(value3); |
|
816 |
state.push(value2); |
|
817 |
state.push(value1); |
|
818 |
} else { |
|
819 |
// form 3 |
|
820 |
Type value3 = state.pop2(); |
|
821 |
state.push(value2); |
|
822 |
state.push(value1); |
|
823 |
state.push(value3); |
|
824 |
state.push(value2); |
|
825 |
state.push(value1); |
|
826 |
} |
|
827 |
} else { |
|
828 |
Type value1 = state.pop2(); |
|
829 |
if (state.stack[state.stacksize-1] != null) { |
|
830 |
// form 2 |
|
831 |
Type value2 = state.pop1(); |
|
832 |
Type value3 = state.pop1(); |
|
833 |
state.push(value1); |
|
834 |
state.push(value3); |
|
835 |
state.push(value2); |
|
836 |
state.push(value1); |
|
837 |
} else { |
|
838 |
// form 4 |
|
839 |
Type value2 = state.pop2(); |
|
840 |
state.push(value1); |
|
841 |
state.push(value2); |
|
842 |
state.push(value1); |
|
843 |
} |
|
844 |
} |
|
845 |
break; |
|
846 |
case dup_x2: { |
|
847 |
Type value1 = state.pop1(); |
|
848 |
if (state.stack[state.stacksize-1] != null) { |
|
849 |
// form 1 |
|
850 |
Type value2 = state.pop1(); |
|
851 |
Type value3 = state.pop1(); |
|
852 |
state.push(value1); |
|
853 |
state.push(value3); |
|
854 |
state.push(value2); |
|
855 |
state.push(value1); |
|
856 |
} else { |
|
857 |
// form 2 |
|
858 |
Type value2 = state.pop2(); |
|
859 |
state.push(value1); |
|
860 |
state.push(value2); |
|
861 |
state.push(value1); |
|
862 |
} |
|
863 |
} |
|
864 |
break; |
|
865 |
case fcmpl: |
|
866 |
case fcmpg: |
|
867 |
state.pop(2); |
|
868 |
state.push(syms.intType); |
|
869 |
break; |
|
870 |
case dcmpl: |
|
871 |
case dcmpg: |
|
872 |
state.pop(4); |
|
873 |
state.push(syms.intType); |
|
874 |
break; |
|
875 |
case swap: { |
|
876 |
Type value1 = state.pop1(); |
|
877 |
Type value2 = state.pop1(); |
|
878 |
state.push(value1); |
|
879 |
state.push(value2); |
|
880 |
break; |
|
881 |
} |
|
882 |
case dadd: |
|
883 |
case dsub: |
|
884 |
case dmul: |
|
885 |
case ddiv: |
|
886 |
case dmod: |
|
887 |
state.pop(2); |
|
888 |
break; |
|
889 |
case ret: |
|
890 |
markDead(); |
|
891 |
break; |
|
892 |
case wide: |
|
893 |
// must be handled by the caller. |
|
894 |
return; |
|
895 |
case monitorenter: |
|
896 |
case monitorexit: |
|
897 |
state.pop(1); |
|
898 |
break; |
|
899 |
||
900 |
default: |
|
901 |
throw new AssertionError(mnem(op)); |
|
902 |
} |
|
903 |
postop(); |
|
904 |
} |
|
905 |
||
906 |
/** Emit an opcode with a one-byte operand field. |
|
907 |
*/ |
|
908 |
public void emitop1(int op, int od) { |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
909 |
emitop1(op, od, null); |
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
910 |
} |
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
911 |
|
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
912 |
public void emitop1(int op, int od, PoolConstant data) { |
10 | 913 |
emitop(op); |
914 |
if (!alive) return; |
|
915 |
emit1(od); |
|
916 |
switch (op) { |
|
917 |
case bipush: |
|
918 |
state.push(syms.intType); |
|
919 |
break; |
|
920 |
case ldc1: |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
921 |
state.push(types.constantType((LoadableConstant)data)); |
10 | 922 |
break; |
923 |
default: |
|
924 |
throw new AssertionError(mnem(op)); |
|
925 |
} |
|
926 |
postop(); |
|
927 |
} |
|
928 |
||
929 |
/** Emit an opcode with a one-byte operand field; |
|
930 |
* widen if field does not fit in a byte. |
|
931 |
*/ |
|
932 |
public void emitop1w(int op, int od) { |
|
933 |
if (od > 0xFF) { |
|
934 |
emitop(wide); |
|
935 |
emitop(op); |
|
936 |
emit2(od); |
|
937 |
} else { |
|
938 |
emitop(op); |
|
939 |
emit1(od); |
|
940 |
} |
|
941 |
if (!alive) return; |
|
942 |
switch (op) { |
|
943 |
case iload: |
|
944 |
state.push(syms.intType); |
|
945 |
break; |
|
946 |
case lload: |
|
947 |
state.push(syms.longType); |
|
948 |
break; |
|
949 |
case fload: |
|
950 |
state.push(syms.floatType); |
|
951 |
break; |
|
952 |
case dload: |
|
953 |
state.push(syms.doubleType); |
|
954 |
break; |
|
955 |
case aload: |
|
956 |
state.push(lvar[od].sym.type); |
|
957 |
break; |
|
958 |
case lstore: |
|
959 |
case dstore: |
|
960 |
state.pop(2); |
|
961 |
break; |
|
962 |
case istore: |
|
963 |
case fstore: |
|
964 |
case astore: |
|
965 |
state.pop(1); |
|
966 |
break; |
|
967 |
case ret: |
|
968 |
markDead(); |
|
969 |
break; |
|
970 |
default: |
|
971 |
throw new AssertionError(mnem(op)); |
|
972 |
} |
|
973 |
postop(); |
|
974 |
} |
|
975 |
||
976 |
/** Emit an opcode with two one-byte operand fields; |
|
977 |
* widen if either field does not fit in a byte. |
|
978 |
*/ |
|
979 |
public void emitop1w(int op, int od1, int od2) { |
|
980 |
if (od1 > 0xFF || od2 < -128 || od2 > 127) { |
|
981 |
emitop(wide); |
|
982 |
emitop(op); |
|
983 |
emit2(od1); |
|
984 |
emit2(od2); |
|
985 |
} else { |
|
986 |
emitop(op); |
|
987 |
emit1(od1); |
|
988 |
emit1(od2); |
|
989 |
} |
|
990 |
if (!alive) return; |
|
991 |
switch (op) { |
|
992 |
case iinc: |
|
993 |
break; |
|
994 |
default: |
|
995 |
throw new AssertionError(mnem(op)); |
|
996 |
} |
|
997 |
} |
|
998 |
||
999 |
/** Emit an opcode with a two-byte operand field. |
|
1000 |
*/ |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1001 |
public <P extends PoolConstant> void emitop2(int op, P constant, ToIntBiFunction<PoolWriter, P> poolFunc) { |
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1002 |
int od = poolFunc.applyAsInt(poolWriter, constant); |
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1003 |
emitop2(op, od, constant); |
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1004 |
} |
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1005 |
|
10 | 1006 |
public void emitop2(int op, int od) { |
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1007 |
emitop2(op, od, null); |
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1008 |
} |
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1009 |
|
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1010 |
public void emitop2(int op, int od, PoolConstant data) { |
10 | 1011 |
emitop(op); |
1012 |
if (!alive) return; |
|
1013 |
emit2(od); |
|
1014 |
switch (op) { |
|
1015 |
case getstatic: |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1016 |
state.push(((Symbol)data).erasure(types)); |
10 | 1017 |
break; |
1018 |
case putstatic: |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1019 |
state.pop(((Symbol)data).erasure(types)); |
10 | 1020 |
break; |
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1021 |
case new_: { |
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1022 |
Type t = (Type)data; |
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1023 |
state.push(uninitializedObject(t.tsym.erasure(types), cp-3)); |
10 | 1024 |
break; |
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1025 |
} |
10 | 1026 |
case sipush: |
1027 |
state.push(syms.intType); |
|
1028 |
break; |
|
1029 |
case if_acmp_null: |
|
1030 |
case if_acmp_nonnull: |
|
1031 |
case ifeq: |
|
1032 |
case ifne: |
|
1033 |
case iflt: |
|
1034 |
case ifge: |
|
1035 |
case ifgt: |
|
1036 |
case ifle: |
|
1037 |
state.pop(1); |
|
1038 |
break; |
|
1039 |
case if_icmpeq: |
|
1040 |
case if_icmpne: |
|
1041 |
case if_icmplt: |
|
1042 |
case if_icmpge: |
|
1043 |
case if_icmpgt: |
|
1044 |
case if_icmple: |
|
1045 |
case if_acmpeq: |
|
1046 |
case if_acmpne: |
|
1047 |
state.pop(2); |
|
1048 |
break; |
|
1049 |
case goto_: |
|
1050 |
markDead(); |
|
1051 |
break; |
|
1052 |
case putfield: |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1053 |
state.pop(((Symbol)data).erasure(types)); |
10 | 1054 |
state.pop(1); // object ref |
1055 |
break; |
|
1056 |
case getfield: |
|
1057 |
state.pop(1); // object ref |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1058 |
state.push(((Symbol)data).erasure(types)); |
10 | 1059 |
break; |
1060 |
case checkcast: { |
|
1061 |
state.pop(1); // object ref |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1062 |
Type t = types.erasure((Type)data); |
10 | 1063 |
state.push(t); |
1064 |
break; } |
|
1065 |
case ldc2w: |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1066 |
state.push(types.constantType((LoadableConstant)data)); |
10 | 1067 |
break; |
1068 |
case instanceof_: |
|
1069 |
state.pop(1); |
|
1070 |
state.push(syms.intType); |
|
1071 |
break; |
|
1072 |
case ldc2: |
|
54568
b2ed96c35687
8222289: Overhaul logic for reading/writing constant pool entries
mcimadamore
parents:
52794
diff
changeset
|
1073 |
state.push(types.constantType((LoadableConstant)data)); |
10 | 1074 |
break; |
1075 |
case jsr: |
|
1076 |
break; |
|
1077 |
default: |
|
1078 |
throw new AssertionError(mnem(op)); |
|
1079 |
} |
|
1080 |
// postop(); |
|
1081 |
} |
|
1082 |
||
1083 |
/** Emit an opcode with a four-byte operand field. |
|
1084 |
*/ |
|
1085 |
public void emitop4(int op, int od) { |
|
1086 |
emitop(op); |
|
1087 |
if (!alive) return; |
|
1088 |
emit4(od); |
|
1089 |
switch (op) { |
|
1090 |
case goto_w: |
|
1091 |
markDead(); |
|
1092 |
break; |
|
1093 |
case jsr_w: |
|
1094 |
break; |
|
1095 |
default: |
|
1096 |
throw new AssertionError(mnem(op)); |
|
1097 |
} |
|
1098 |
// postop(); |
|
1099 |
} |
|
1100 |
||
1101 |
/** Align code pointer to next `incr' boundary. |
|
1102 |
*/ |
|
1103 |
public void align(int incr) { |
|
1104 |
if (alive) |
|
1105 |
while (cp % incr != 0) emitop0(nop); |
|
1106 |
} |
|
1107 |
||
13844 | 1108 |
/** Place a byte into code at address pc. |
1109 |
* Pre: {@literal pc + 1 <= cp }. |
|
10 | 1110 |
*/ |
1111 |
private void put1(int pc, int op) { |
|
1112 |
code[pc] = (byte)op; |
|
1113 |
} |
|
1114 |
||
13844 | 1115 |
/** Place two bytes into code at address pc. |
1116 |
* Pre: {@literal pc + 2 <= cp }. |
|
10 | 1117 |
*/ |
1118 |
private void put2(int pc, int od) { |
|
1119 |
// pre: pc + 2 <= cp |
|
1120 |
put1(pc, od >> 8); |
|
1121 |
put1(pc+1, od); |
|
1122 |
} |
|
1123 |
||
13844 | 1124 |
/** Place four bytes into code at address pc. |
1125 |
* Pre: {@literal pc + 4 <= cp }. |
|
10 | 1126 |
*/ |
1127 |
public void put4(int pc, int od) { |
|
1128 |
// pre: pc + 4 <= cp |
|
1129 |
put1(pc , od >> 24); |
|
1130 |
put1(pc+1, od >> 16); |
|
1131 |
put1(pc+2, od >> 8); |
|
1132 |
put1(pc+3, od); |
|
1133 |
} |
|
1134 |
||
1135 |
/** Return code byte at position pc as an unsigned int. |
|
1136 |
*/ |
|
1137 |
private int get1(int pc) { |
|
1138 |
return code[pc] & 0xFF; |
|
1139 |
} |
|
1140 |
||
1141 |
/** Return two code bytes at position pc as an unsigned int. |
|
1142 |
*/ |
|
1143 |
private int get2(int pc) { |
|
1144 |
return (get1(pc) << 8) | get1(pc+1); |
|
1145 |
} |
|
1146 |
||
1147 |
/** Return four code bytes at position pc as an int. |
|
1148 |
*/ |
|
1149 |
public int get4(int pc) { |
|
1150 |
// pre: pc + 4 <= cp |
|
1151 |
return |
|
1152 |
(get1(pc) << 24) | |
|
1153 |
(get1(pc+1) << 16) | |
|
1154 |
(get1(pc+2) << 8) | |
|
1155 |
(get1(pc+3)); |
|
1156 |
} |
|
1157 |
||
1158 |
/** Is code generation currently enabled? |
|
1159 |
*/ |
|
1160 |
public boolean isAlive() { |
|
1161 |
return alive || pendingJumps != null; |
|
1162 |
} |
|
1163 |
||
1164 |
/** Switch code generation on/off. |
|
1165 |
*/ |
|
1166 |
public void markDead() { |
|
1167 |
alive = false; |
|
1168 |
} |
|
1169 |
||
1170 |
/** Declare an entry point; return current code pointer |
|
1171 |
*/ |
|
1172 |
public int entryPoint() { |
|
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1173 |
int pc = curCP(); |
10 | 1174 |
alive = true; |
1175 |
pendingStackMap = needStackMap; |
|
1176 |
return pc; |
|
1177 |
} |
|
1178 |
||
1179 |
/** Declare an entry point with initial state; |
|
1180 |
* return current code pointer |
|
1181 |
*/ |
|
1182 |
public int entryPoint(State state) { |
|
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1183 |
int pc = curCP(); |
10 | 1184 |
alive = true; |
28330
d4bcdcac1211
8064857: javac generates LVT entry with length 0 for local variable
vromero
parents:
27227
diff
changeset
|
1185 |
State newState = state.dup(); |
d4bcdcac1211
8064857: javac generates LVT entry with length 0 for local variable
vromero
parents:
27227
diff
changeset
|
1186 |
setDefined(newState.defined); |
d4bcdcac1211
8064857: javac generates LVT entry with length 0 for local variable
vromero
parents:
27227
diff
changeset
|
1187 |
this.state = newState; |
8032 | 1188 |
Assert.check(state.stacksize <= max_stack); |
10 | 1189 |
if (debugCode) System.err.println("entry point " + state); |
1190 |
pendingStackMap = needStackMap; |
|
1191 |
return pc; |
|
1192 |
} |
|
1193 |
||
1194 |
/** Declare an entry point with initial state plus a pushed value; |
|
1195 |
* return current code pointer |
|
1196 |
*/ |
|
1197 |
public int entryPoint(State state, Type pushed) { |
|
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1198 |
int pc = curCP(); |
10 | 1199 |
alive = true; |
28330
d4bcdcac1211
8064857: javac generates LVT entry with length 0 for local variable
vromero
parents:
27227
diff
changeset
|
1200 |
State newState = state.dup(); |
d4bcdcac1211
8064857: javac generates LVT entry with length 0 for local variable
vromero
parents:
27227
diff
changeset
|
1201 |
setDefined(newState.defined); |
d4bcdcac1211
8064857: javac generates LVT entry with length 0 for local variable
vromero
parents:
27227
diff
changeset
|
1202 |
this.state = newState; |
8032 | 1203 |
Assert.check(state.stacksize <= max_stack); |
10 | 1204 |
this.state.push(pushed); |
1205 |
if (debugCode) System.err.println("entry point " + state); |
|
1206 |
pendingStackMap = needStackMap; |
|
1207 |
return pc; |
|
1208 |
} |
|
1209 |
||
51563
de411d537aae
8206986: Compiler support for Switch Expressions (Preview)
jlahoda
parents:
48513
diff
changeset
|
1210 |
public int setLetExprStackPos(int pos) { |
de411d537aae
8206986: Compiler support for Switch Expressions (Preview)
jlahoda
parents:
48513
diff
changeset
|
1211 |
int res = letExprStackPos; |
de411d537aae
8206986: Compiler support for Switch Expressions (Preview)
jlahoda
parents:
48513
diff
changeset
|
1212 |
letExprStackPos = pos; |
de411d537aae
8206986: Compiler support for Switch Expressions (Preview)
jlahoda
parents:
48513
diff
changeset
|
1213 |
return res; |
de411d537aae
8206986: Compiler support for Switch Expressions (Preview)
jlahoda
parents:
48513
diff
changeset
|
1214 |
} |
de411d537aae
8206986: Compiler support for Switch Expressions (Preview)
jlahoda
parents:
48513
diff
changeset
|
1215 |
|
de411d537aae
8206986: Compiler support for Switch Expressions (Preview)
jlahoda
parents:
48513
diff
changeset
|
1216 |
public boolean isStatementStart() { |
52794
e4ba5414c8b4
8214031: Assertion error in value break statement with conditional operator in switch expression
jlahoda
parents:
51563
diff
changeset
|
1217 |
return !alive || state.stacksize == letExprStackPos; |
51563
de411d537aae
8206986: Compiler support for Switch Expressions (Preview)
jlahoda
parents:
48513
diff
changeset
|
1218 |
} |
10 | 1219 |
|
1220 |
/************************************************************************** |
|
1221 |
* Stack map generation |
|
1222 |
*************************************************************************/ |
|
1223 |
||
1224 |
/** An entry in the stack map. */ |
|
1225 |
static class StackMapFrame { |
|
1226 |
int pc; |
|
1227 |
Type[] locals; |
|
1228 |
Type[] stack; |
|
1229 |
} |
|
1230 |
||
1231 |
/** A buffer of cldc stack map entries. */ |
|
1232 |
StackMapFrame[] stackMapBuffer = null; |
|
1233 |
||
1234 |
/** A buffer of compressed StackMapTable entries. */ |
|
1235 |
StackMapTableFrame[] stackMapTableBuffer = null; |
|
1236 |
int stackMapBufferSize = 0; |
|
1237 |
||
1238 |
/** The last PC at which we generated a stack map. */ |
|
1239 |
int lastStackMapPC = -1; |
|
1240 |
||
1241 |
/** The last stack map frame in StackMapTable. */ |
|
1242 |
StackMapFrame lastFrame = null; |
|
1243 |
||
1244 |
/** The stack map frame before the last one. */ |
|
1245 |
StackMapFrame frameBeforeLast = null; |
|
1246 |
||
1247 |
/** Emit a stack map entry. */ |
|
1248 |
public void emitStackMap() { |
|
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1249 |
int pc = curCP(); |
10 | 1250 |
if (!needStackMap) return; |
1251 |
||
1252 |
||
1253 |
||
1254 |
switch (stackMap) { |
|
1255 |
case CLDC: |
|
1256 |
emitCLDCStackMap(pc, getLocalsSize()); |
|
1257 |
break; |
|
1258 |
case JSR202: |
|
1259 |
emitStackMapFrame(pc, getLocalsSize()); |
|
1260 |
break; |
|
1261 |
default: |
|
1262 |
throw new AssertionError("Should have chosen a stackmap format"); |
|
1263 |
} |
|
1264 |
// DEBUG code follows |
|
1265 |
if (debugCode) state.dump(pc); |
|
1266 |
} |
|
1267 |
||
1268 |
private int getLocalsSize() { |
|
1269 |
int nextLocal = 0; |
|
1270 |
for (int i=max_locals-1; i>=0; i--) { |
|
1271 |
if (state.defined.isMember(i) && lvar[i] != null) { |
|
1272 |
nextLocal = i + width(lvar[i].sym.erasure(types)); |
|
1273 |
break; |
|
1274 |
} |
|
1275 |
} |
|
1276 |
return nextLocal; |
|
1277 |
} |
|
1278 |
||
1279 |
/** Emit a CLDC stack map frame. */ |
|
1280 |
void emitCLDCStackMap(int pc, int localsSize) { |
|
1281 |
if (lastStackMapPC == pc) { |
|
1282 |
// drop existing stackmap at this offset |
|
1283 |
stackMapBuffer[--stackMapBufferSize] = null; |
|
1284 |
} |
|
1285 |
lastStackMapPC = pc; |
|
1286 |
||
1287 |
if (stackMapBuffer == null) { |
|
1288 |
stackMapBuffer = new StackMapFrame[20]; |
|
14049
3207422a0f9b
7193657: provide internal ArrayUtils class to simplify common usage of arrays in javac
jjg
parents:
14046
diff
changeset
|
1289 |
} else { |
3207422a0f9b
7193657: provide internal ArrayUtils class to simplify common usage of arrays in javac
jjg
parents:
14046
diff
changeset
|
1290 |
stackMapBuffer = ArrayUtils.ensureCapacity(stackMapBuffer, stackMapBufferSize); |
10 | 1291 |
} |
1292 |
StackMapFrame frame = |
|
1293 |
stackMapBuffer[stackMapBufferSize++] = new StackMapFrame(); |
|
1294 |
frame.pc = pc; |
|
1295 |
||
1296 |
frame.locals = new Type[localsSize]; |
|
1297 |
for (int i=0; i<localsSize; i++) { |
|
1298 |
if (state.defined.isMember(i) && lvar[i] != null) { |
|
1299 |
Type vtype = lvar[i].sym.type; |
|
1300 |
if (!(vtype instanceof UninitializedType)) |
|
1301 |
vtype = types.erasure(vtype); |
|
1302 |
frame.locals[i] = vtype; |
|
1303 |
} |
|
1304 |
} |
|
1305 |
frame.stack = new Type[state.stacksize]; |
|
1306 |
for (int i=0; i<state.stacksize; i++) |
|
1307 |
frame.stack[i] = state.stack[i]; |
|
1308 |
} |
|
1309 |
||
1310 |
void emitStackMapFrame(int pc, int localsSize) { |
|
1311 |
if (lastFrame == null) { |
|
1312 |
// first frame |
|
1313 |
lastFrame = getInitialFrame(); |
|
1314 |
} else if (lastFrame.pc == pc) { |
|
1315 |
// drop existing stackmap at this offset |
|
1316 |
stackMapTableBuffer[--stackMapBufferSize] = null; |
|
1317 |
lastFrame = frameBeforeLast; |
|
1318 |
frameBeforeLast = null; |
|
1319 |
} |
|
1320 |
||
1321 |
StackMapFrame frame = new StackMapFrame(); |
|
1322 |
frame.pc = pc; |
|
1323 |
||
1324 |
int localCount = 0; |
|
1325 |
Type[] locals = new Type[localsSize]; |
|
1326 |
for (int i=0; i<localsSize; i++, localCount++) { |
|
1327 |
if (state.defined.isMember(i) && lvar[i] != null) { |
|
1328 |
Type vtype = lvar[i].sym.type; |
|
1329 |
if (!(vtype instanceof UninitializedType)) |
|
1330 |
vtype = types.erasure(vtype); |
|
1331 |
locals[i] = vtype; |
|
1332 |
if (width(vtype) > 1) i++; |
|
1333 |
} |
|
1334 |
} |
|
1335 |
frame.locals = new Type[localCount]; |
|
1336 |
for (int i=0, j=0; i<localsSize; i++, j++) { |
|
8032 | 1337 |
Assert.check(j < localCount); |
10 | 1338 |
frame.locals[j] = locals[i]; |
1339 |
if (width(locals[i]) > 1) i++; |
|
1340 |
} |
|
1341 |
||
1342 |
int stackCount = 0; |
|
1343 |
for (int i=0; i<state.stacksize; i++) { |
|
1344 |
if (state.stack[i] != null) { |
|
1345 |
stackCount++; |
|
1346 |
} |
|
1347 |
} |
|
1348 |
frame.stack = new Type[stackCount]; |
|
1349 |
stackCount = 0; |
|
1350 |
for (int i=0; i<state.stacksize; i++) { |
|
1351 |
if (state.stack[i] != null) { |
|
7215
49e5caf5b854
6999635: Multicatch: crash while compiling simple code with a multicatch parameter
mcimadamore
parents:
5847
diff
changeset
|
1352 |
frame.stack[stackCount++] = types.erasure(state.stack[i]); |
10 | 1353 |
} |
1354 |
} |
|
1355 |
||
1356 |
if (stackMapTableBuffer == null) { |
|
1357 |
stackMapTableBuffer = new StackMapTableFrame[20]; |
|
14049
3207422a0f9b
7193657: provide internal ArrayUtils class to simplify common usage of arrays in javac
jjg
parents:
14046
diff
changeset
|
1358 |
} else { |
3207422a0f9b
7193657: provide internal ArrayUtils class to simplify common usage of arrays in javac
jjg
parents:
14046
diff
changeset
|
1359 |
stackMapTableBuffer = ArrayUtils.ensureCapacity( |
3207422a0f9b
7193657: provide internal ArrayUtils class to simplify common usage of arrays in javac
jjg
parents:
14046
diff
changeset
|
1360 |
stackMapTableBuffer, |
3207422a0f9b
7193657: provide internal ArrayUtils class to simplify common usage of arrays in javac
jjg
parents:
14046
diff
changeset
|
1361 |
stackMapBufferSize); |
10 | 1362 |
} |
1363 |
stackMapTableBuffer[stackMapBufferSize++] = |
|
1364 |
StackMapTableFrame.getInstance(frame, lastFrame.pc, lastFrame.locals, types); |
|
1365 |
||
1366 |
frameBeforeLast = lastFrame; |
|
1367 |
lastFrame = frame; |
|
1368 |
} |
|
1369 |
||
1370 |
StackMapFrame getInitialFrame() { |
|
1371 |
StackMapFrame frame = new StackMapFrame(); |
|
1372 |
List<Type> arg_types = ((MethodType)meth.externalType(types)).argtypes; |
|
1373 |
int len = arg_types.length(); |
|
1374 |
int count = 0; |
|
1375 |
if (!meth.isStatic()) { |
|
1376 |
Type thisType = meth.owner.type; |
|
1377 |
frame.locals = new Type[len+1]; |
|
1378 |
if (meth.isConstructor() && thisType != syms.objectType) { |
|
1379 |
frame.locals[count++] = UninitializedType.uninitializedThis(thisType); |
|
1380 |
} else { |
|
1381 |
frame.locals[count++] = types.erasure(thisType); |
|
1382 |
} |
|
1383 |
} else { |
|
1384 |
frame.locals = new Type[len]; |
|
1385 |
} |
|
1386 |
for (Type arg_type : arg_types) { |
|
1387 |
frame.locals[count++] = types.erasure(arg_type); |
|
1388 |
} |
|
1389 |
frame.pc = -1; |
|
1390 |
frame.stack = null; |
|
1391 |
return frame; |
|
1392 |
} |
|
1393 |
||
1394 |
||
1395 |
/************************************************************************** |
|
1396 |
* Operations having to do with jumps |
|
1397 |
*************************************************************************/ |
|
1398 |
||
1399 |
/** A chain represents a list of unresolved jumps. Jump locations |
|
1400 |
* are sorted in decreasing order. |
|
1401 |
*/ |
|
1402 |
public static class Chain { |
|
1403 |
||
1404 |
/** The position of the jump instruction. |
|
1405 |
*/ |
|
1406 |
public final int pc; |
|
1407 |
||
1408 |
/** The machine state after the jump instruction. |
|
1409 |
* Invariant: all elements of a chain list have the same stacksize |
|
1410 |
* and compatible stack and register contents. |
|
1411 |
*/ |
|
1412 |
Code.State state; |
|
1413 |
||
1414 |
/** The next jump in the list. |
|
1415 |
*/ |
|
1416 |
public final Chain next; |
|
1417 |
||
1418 |
/** Construct a chain from its jump position, stacksize, previous |
|
1419 |
* chain, and machine state. |
|
1420 |
*/ |
|
1421 |
public Chain(int pc, Chain next, Code.State state) { |
|
1422 |
this.pc = pc; |
|
1423 |
this.next = next; |
|
1424 |
this.state = state; |
|
1425 |
} |
|
1426 |
} |
|
1427 |
||
1428 |
/** Negate a branch opcode. |
|
1429 |
*/ |
|
1430 |
public static int negate(int opcode) { |
|
1431 |
if (opcode == if_acmp_null) return if_acmp_nonnull; |
|
1432 |
else if (opcode == if_acmp_nonnull) return if_acmp_null; |
|
1433 |
else return ((opcode + 1) ^ 1) - 1; |
|
1434 |
} |
|
1435 |
||
1436 |
/** Emit a jump instruction. |
|
1437 |
* Return code pointer of instruction to be patched. |
|
1438 |
*/ |
|
1439 |
public int emitJump(int opcode) { |
|
1440 |
if (fatcode) { |
|
1441 |
if (opcode == goto_ || opcode == jsr) { |
|
1442 |
emitop4(opcode + goto_w - goto_, 0); |
|
1443 |
} else { |
|
1444 |
emitop2(negate(opcode), 8); |
|
1445 |
emitop4(goto_w, 0); |
|
1446 |
alive = true; |
|
1447 |
pendingStackMap = needStackMap; |
|
1448 |
} |
|
1449 |
return cp - 5; |
|
1450 |
} else { |
|
1451 |
emitop2(opcode, 0); |
|
1452 |
return cp - 3; |
|
1453 |
} |
|
1454 |
} |
|
1455 |
||
1456 |
/** Emit a branch with given opcode; return its chain. |
|
1457 |
* branch differs from jump in that jsr is treated as no-op. |
|
1458 |
*/ |
|
1459 |
public Chain branch(int opcode) { |
|
1460 |
Chain result = null; |
|
1461 |
if (opcode == goto_) { |
|
1462 |
result = pendingJumps; |
|
1463 |
pendingJumps = null; |
|
1464 |
} |
|
1465 |
if (opcode != dontgoto && isAlive()) { |
|
1466 |
result = new Chain(emitJump(opcode), |
|
1467 |
result, |
|
1468 |
state.dup()); |
|
1469 |
fixedPc = fatcode; |
|
1470 |
if (opcode == goto_) alive = false; |
|
1471 |
} |
|
1472 |
return result; |
|
1473 |
} |
|
1474 |
||
1475 |
/** Resolve chain to point to given target. |
|
1476 |
*/ |
|
1477 |
public void resolve(Chain chain, int target) { |
|
1478 |
boolean changed = false; |
|
1479 |
State newState = state; |
|
1480 |
for (; chain != null; chain = chain.next) { |
|
8032 | 1481 |
Assert.check(state != chain.state |
51563
de411d537aae
8206986: Compiler support for Switch Expressions (Preview)
jlahoda
parents:
48513
diff
changeset
|
1482 |
&& (target > chain.pc || isStatementStart())); |
10 | 1483 |
if (target >= cp) { |
1484 |
target = cp; |
|
1485 |
} else if (get1(target) == goto_) { |
|
1486 |
if (fatcode) target = target + get4(target + 1); |
|
1487 |
else target = target + get2(target + 1); |
|
1488 |
} |
|
1489 |
if (get1(chain.pc) == goto_ && |
|
1490 |
chain.pc + 3 == target && target == cp && !fixedPc) { |
|
1491 |
// If goto the next instruction, the jump is not needed: |
|
1492 |
// compact the code. |
|
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1493 |
if (varDebugInfo) { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1494 |
adjustAliveRanges(cp, -3); |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1495 |
} |
10 | 1496 |
cp = cp - 3; |
1497 |
target = target - 3; |
|
1498 |
if (chain.next == null) { |
|
1499 |
// This is the only jump to the target. Exit the loop |
|
1500 |
// without setting new state. The code is reachable |
|
1501 |
// from the instruction before goto_. |
|
1502 |
alive = true; |
|
1503 |
break; |
|
1504 |
} |
|
1505 |
} else { |
|
1506 |
if (fatcode) |
|
1507 |
put4(chain.pc + 1, target - chain.pc); |
|
1508 |
else if (target - chain.pc < Short.MIN_VALUE || |
|
1509 |
target - chain.pc > Short.MAX_VALUE) |
|
1510 |
fatcode = true; |
|
1511 |
else |
|
1512 |
put2(chain.pc + 1, target - chain.pc); |
|
8032 | 1513 |
Assert.check(!alive || |
10 | 1514 |
chain.state.stacksize == newState.stacksize && |
8032 | 1515 |
chain.state.nlocks == newState.nlocks); |
10 | 1516 |
} |
1517 |
fixedPc = true; |
|
1518 |
if (cp == target) { |
|
1519 |
changed = true; |
|
1520 |
if (debugCode) |
|
1521 |
System.err.println("resolving chain state=" + chain.state); |
|
1522 |
if (alive) { |
|
1523 |
newState = chain.state.join(newState); |
|
1524 |
} else { |
|
1525 |
newState = chain.state; |
|
1526 |
alive = true; |
|
1527 |
} |
|
1528 |
} |
|
1529 |
} |
|
8032 | 1530 |
Assert.check(!changed || state != newState); |
10 | 1531 |
if (state != newState) { |
1532 |
setDefined(newState.defined); |
|
1533 |
state = newState; |
|
1534 |
pendingStackMap = needStackMap; |
|
1535 |
} |
|
1536 |
} |
|
1537 |
||
1538 |
/** Resolve chain to point to current code pointer. |
|
1539 |
*/ |
|
1540 |
public void resolve(Chain chain) { |
|
8032 | 1541 |
Assert.check( |
10 | 1542 |
!alive || |
1543 |
chain==null || |
|
1544 |
state.stacksize == chain.state.stacksize && |
|
8032 | 1545 |
state.nlocks == chain.state.nlocks); |
10 | 1546 |
pendingJumps = mergeChains(chain, pendingJumps); |
1547 |
} |
|
1548 |
||
1549 |
/** Resolve any pending jumps. |
|
1550 |
*/ |
|
1551 |
public void resolvePending() { |
|
1552 |
Chain x = pendingJumps; |
|
1553 |
pendingJumps = null; |
|
1554 |
resolve(x, cp); |
|
1555 |
} |
|
1556 |
||
1557 |
/** Merge the jumps in of two chains into one. |
|
1558 |
*/ |
|
1559 |
public static Chain mergeChains(Chain chain1, Chain chain2) { |
|
1560 |
// recursive merge sort |
|
1561 |
if (chain2 == null) return chain1; |
|
1562 |
if (chain1 == null) return chain2; |
|
8032 | 1563 |
Assert.check( |
10 | 1564 |
chain1.state.stacksize == chain2.state.stacksize && |
8032 | 1565 |
chain1.state.nlocks == chain2.state.nlocks); |
10 | 1566 |
if (chain1.pc < chain2.pc) |
1567 |
return new Chain( |
|
1568 |
chain2.pc, |
|
1569 |
mergeChains(chain1, chain2.next), |
|
1570 |
chain2.state); |
|
1571 |
return new Chain( |
|
1572 |
chain1.pc, |
|
1573 |
mergeChains(chain1.next, chain2), |
|
1574 |
chain1.state); |
|
1575 |
} |
|
1576 |
||
1577 |
||
1578 |
/* ************************************************************************** |
|
1579 |
* Catch clauses |
|
1580 |
****************************************************************************/ |
|
1581 |
||
1582 |
/** Add a catch clause to code. |
|
1583 |
*/ |
|
24396 | 1584 |
public void addCatch(char startPc, char endPc, |
1585 |
char handlerPc, char catchType) { |
|
10811
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1586 |
catchInfo.append(new char[]{startPc, endPc, handlerPc, catchType}); |
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1587 |
} |
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1588 |
|
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1589 |
|
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1590 |
public void compressCatchTable() { |
20249
93f8eae31092
6386236: Please rename com.sun.tools.javac.util.ListBuffer.lb()
alundblad
parents:
19941
diff
changeset
|
1591 |
ListBuffer<char[]> compressedCatchInfo = new ListBuffer<>(); |
10811
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1592 |
List<Integer> handlerPcs = List.nil(); |
14803
88347e495d34
8004504: ListBuffer could reuse List.nil() as the sentinel element
jlahoda
parents:
14801
diff
changeset
|
1593 |
for (char[] catchEntry : catchInfo) { |
10811
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1594 |
handlerPcs = handlerPcs.prepend((int)catchEntry[2]); |
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1595 |
} |
14803
88347e495d34
8004504: ListBuffer could reuse List.nil() as the sentinel element
jlahoda
parents:
14801
diff
changeset
|
1596 |
for (char[] catchEntry : catchInfo) { |
10811
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1597 |
int startpc = catchEntry[0]; |
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1598 |
int endpc = catchEntry[1]; |
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1599 |
if (startpc == endpc || |
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1600 |
(startpc == (endpc - 1) && |
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1601 |
handlerPcs.contains(startpc))) { |
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1602 |
continue; |
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1603 |
} else { |
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1604 |
compressedCatchInfo.append(catchEntry); |
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1605 |
} |
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1606 |
} |
4d4ed480210e
7093325: Redundant entry in bytecode exception table
mcimadamore
parents:
9600
diff
changeset
|
1607 |
catchInfo = compressedCatchInfo; |
10 | 1608 |
} |
1609 |
||
1610 |
||
1611 |
/* ************************************************************************** |
|
1612 |
* Line numbers |
|
1613 |
****************************************************************************/ |
|
1614 |
||
1615 |
/** Add a line number entry. |
|
1616 |
*/ |
|
1617 |
public void addLineNumber(char startPc, char lineNumber) { |
|
1618 |
if (lineDebugInfo) { |
|
1619 |
if (lineInfo.nonEmpty() && lineInfo.head[0] == startPc) |
|
1620 |
lineInfo = lineInfo.tail; |
|
1621 |
if (lineInfo.isEmpty() || lineInfo.head[1] != lineNumber) |
|
1622 |
lineInfo = lineInfo.prepend(new char[]{startPc, lineNumber}); |
|
1623 |
} |
|
1624 |
} |
|
1625 |
||
1626 |
/** Mark beginning of statement. |
|
1627 |
*/ |
|
1628 |
public void statBegin(int pos) { |
|
1629 |
if (pos != Position.NOPOS) { |
|
1630 |
pendingStatPos = pos; |
|
1631 |
} |
|
1632 |
} |
|
1633 |
||
1634 |
/** Force stat begin eagerly |
|
1635 |
*/ |
|
1636 |
public void markStatBegin() { |
|
1637 |
if (alive && lineDebugInfo) { |
|
1638 |
int line = lineMap.getLineNumber(pendingStatPos); |
|
1639 |
char cp1 = (char)cp; |
|
1640 |
char line1 = (char)line; |
|
1641 |
if (cp1 == cp && line1 == line) |
|
1642 |
addLineNumber(cp1, line1); |
|
1643 |
} |
|
1644 |
pendingStatPos = Position.NOPOS; |
|
1645 |
} |
|
1646 |
||
1647 |
||
1648 |
/* ************************************************************************** |
|
1649 |
* Simulated VM machine state |
|
1650 |
****************************************************************************/ |
|
1651 |
||
1652 |
class State implements Cloneable { |
|
1653 |
/** The set of registers containing values. */ |
|
1654 |
Bits defined; |
|
1655 |
||
1656 |
/** The (types of the) contents of the machine stack. */ |
|
1657 |
Type[] stack; |
|
1658 |
||
1659 |
/** The first stack position currently unused. */ |
|
1660 |
int stacksize; |
|
1661 |
||
1662 |
/** The numbers of registers containing locked monitors. */ |
|
1663 |
int[] locks; |
|
1664 |
int nlocks; |
|
1665 |
||
1666 |
State() { |
|
1667 |
defined = new Bits(); |
|
1668 |
stack = new Type[16]; |
|
1669 |
} |
|
1670 |
||
1671 |
State dup() { |
|
1672 |
try { |
|
1673 |
State state = (State)super.clone(); |
|
17282
c6964ad7df63
8008562: javac, a refactoring to Bits is necessary in order to provide a change history
vromero
parents:
16807
diff
changeset
|
1674 |
state.defined = new Bits(defined); |
10 | 1675 |
state.stack = stack.clone(); |
1676 |
if (locks != null) state.locks = locks.clone(); |
|
1677 |
if (debugCode) { |
|
1678 |
System.err.println("duping state " + this); |
|
1679 |
dump(); |
|
1680 |
} |
|
1681 |
return state; |
|
1682 |
} catch (CloneNotSupportedException ex) { |
|
1683 |
throw new AssertionError(ex); |
|
1684 |
} |
|
1685 |
} |
|
1686 |
||
1687 |
void lock(int register) { |
|
1688 |
if (locks == null) { |
|
1689 |
locks = new int[20]; |
|
14049
3207422a0f9b
7193657: provide internal ArrayUtils class to simplify common usage of arrays in javac
jjg
parents:
14046
diff
changeset
|
1690 |
} else { |
3207422a0f9b
7193657: provide internal ArrayUtils class to simplify common usage of arrays in javac
jjg
parents:
14046
diff
changeset
|
1691 |
locks = ArrayUtils.ensureCapacity(locks, nlocks); |
10 | 1692 |
} |
1693 |
locks[nlocks] = register; |
|
1694 |
nlocks++; |
|
1695 |
} |
|
1696 |
||
1697 |
void unlock(int register) { |
|
1698 |
nlocks--; |
|
8032 | 1699 |
Assert.check(locks[nlocks] == register); |
10 | 1700 |
locks[nlocks] = -1; |
1701 |
} |
|
1702 |
||
1703 |
void push(Type t) { |
|
1704 |
if (debugCode) System.err.println(" pushing " + t); |
|
14359
d4099818ab70
7200915: convert TypeTags from a series of small ints to an enum
jjg
parents:
14049
diff
changeset
|
1705 |
switch (t.getTag()) { |
d4099818ab70
7200915: convert TypeTags from a series of small ints to an enum
jjg
parents:
14049
diff
changeset
|
1706 |
case VOID: |
10 | 1707 |
return; |
14359
d4099818ab70
7200915: convert TypeTags from a series of small ints to an enum
jjg
parents:
14049
diff
changeset
|
1708 |
case BYTE: |
d4099818ab70
7200915: convert TypeTags from a series of small ints to an enum
jjg
parents:
14049
diff
changeset
|
1709 |
case CHAR: |
d4099818ab70
7200915: convert TypeTags from a series of small ints to an enum
jjg
parents:
14049
diff
changeset
|
1710 |
case SHORT: |
d4099818ab70
7200915: convert TypeTags from a series of small ints to an enum
jjg
parents:
14049
diff
changeset
|
1711 |
case BOOLEAN: |
10 | 1712 |
t = syms.intType; |
1713 |
break; |
|
1714 |
default: |
|
1715 |
break; |
|
1716 |
} |
|
14049
3207422a0f9b
7193657: provide internal ArrayUtils class to simplify common usage of arrays in javac
jjg
parents:
14046
diff
changeset
|
1717 |
stack = ArrayUtils.ensureCapacity(stack, stacksize+2); |
10 | 1718 |
stack[stacksize++] = t; |
1719 |
switch (width(t)) { |
|
1720 |
case 1: |
|
1721 |
break; |
|
1722 |
case 2: |
|
1723 |
stack[stacksize++] = null; |
|
1724 |
break; |
|
1725 |
default: |
|
1726 |
throw new AssertionError(t); |
|
1727 |
} |
|
1728 |
if (stacksize > max_stack) |
|
1729 |
max_stack = stacksize; |
|
1730 |
} |
|
1731 |
||
1732 |
Type pop1() { |
|
1733 |
if (debugCode) System.err.println(" popping " + 1); |
|
1734 |
stacksize--; |
|
1735 |
Type result = stack[stacksize]; |
|
1736 |
stack[stacksize] = null; |
|
8032 | 1737 |
Assert.check(result != null && width(result) == 1); |
10 | 1738 |
return result; |
1739 |
} |
|
1740 |
||
1741 |
Type peek() { |
|
1742 |
return stack[stacksize-1]; |
|
1743 |
} |
|
1744 |
||
1745 |
Type pop2() { |
|
1746 |
if (debugCode) System.err.println(" popping " + 2); |
|
1747 |
stacksize -= 2; |
|
1748 |
Type result = stack[stacksize]; |
|
1749 |
stack[stacksize] = null; |
|
8032 | 1750 |
Assert.check(stack[stacksize+1] == null |
1751 |
&& result != null && width(result) == 2); |
|
10 | 1752 |
return result; |
1753 |
} |
|
1754 |
||
1755 |
void pop(int n) { |
|
1756 |
if (debugCode) System.err.println(" popping " + n); |
|
1757 |
while (n > 0) { |
|
1758 |
stack[--stacksize] = null; |
|
1759 |
n--; |
|
1760 |
} |
|
1761 |
} |
|
1762 |
||
1763 |
void pop(Type t) { |
|
1764 |
pop(width(t)); |
|
1765 |
} |
|
1766 |
||
1767 |
/** Force the top of the stack to be treated as this supertype |
|
1768 |
* of its current type. */ |
|
1769 |
void forceStackTop(Type t) { |
|
1770 |
if (!alive) return; |
|
14359
d4099818ab70
7200915: convert TypeTags from a series of small ints to an enum
jjg
parents:
14049
diff
changeset
|
1771 |
switch (t.getTag()) { |
10 | 1772 |
case CLASS: |
1773 |
case ARRAY: |
|
1774 |
int width = width(t); |
|
1775 |
Type old = stack[stacksize-width]; |
|
8032 | 1776 |
Assert.check(types.isSubtype(types.erasure(old), |
1777 |
types.erasure(t))); |
|
10 | 1778 |
stack[stacksize-width] = t; |
1779 |
break; |
|
1780 |
default: |
|
1781 |
} |
|
1782 |
} |
|
1783 |
||
1784 |
void markInitialized(UninitializedType old) { |
|
1785 |
Type newtype = old.initializedType(); |
|
21703
b12ce201d445
8027660: javac crash while creating LVT entry for a local variable defined in an inner block
vromero
parents:
20249
diff
changeset
|
1786 |
for (int i=0; i<stacksize; i++) { |
10 | 1787 |
if (stack[i] == old) stack[i] = newtype; |
21703
b12ce201d445
8027660: javac crash while creating LVT entry for a local variable defined in an inner block
vromero
parents:
20249
diff
changeset
|
1788 |
} |
10 | 1789 |
for (int i=0; i<lvar.length; i++) { |
1790 |
LocalVar lv = lvar[i]; |
|
1791 |
if (lv != null && lv.sym.type == old) { |
|
1792 |
VarSymbol sym = lv.sym; |
|
1793 |
sym = sym.clone(sym.owner); |
|
1794 |
sym.type = newtype; |
|
1795 |
LocalVar newlv = lvar[i] = new LocalVar(sym); |
|
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1796 |
newlv.aliveRanges = lv.aliveRanges; |
10 | 1797 |
} |
1798 |
} |
|
1799 |
} |
|
1800 |
||
1801 |
State join(State other) { |
|
17282
c6964ad7df63
8008562: javac, a refactoring to Bits is necessary in order to provide a change history
vromero
parents:
16807
diff
changeset
|
1802 |
defined.andSet(other.defined); |
8032 | 1803 |
Assert.check(stacksize == other.stacksize |
1804 |
&& nlocks == other.nlocks); |
|
10 | 1805 |
for (int i=0; i<stacksize; ) { |
1806 |
Type t = stack[i]; |
|
1807 |
Type tother = other.stack[i]; |
|
1808 |
Type result = |
|
1809 |
t==tother ? t : |
|
1810 |
types.isSubtype(t, tother) ? tother : |
|
1811 |
types.isSubtype(tother, t) ? t : |
|
1812 |
error(); |
|
1813 |
int w = width(result); |
|
1814 |
stack[i] = result; |
|
8032 | 1815 |
if (w == 2) Assert.checkNull(stack[i+1]); |
10 | 1816 |
i += w; |
1817 |
} |
|
1818 |
return this; |
|
1819 |
} |
|
1820 |
||
1821 |
Type error() { |
|
1822 |
throw new AssertionError("inconsistent stack types at join point"); |
|
1823 |
} |
|
1824 |
||
1825 |
void dump() { |
|
1826 |
dump(-1); |
|
1827 |
} |
|
1828 |
||
1829 |
void dump(int pc) { |
|
1830 |
System.err.print("stackMap for " + meth.owner + "." + meth); |
|
1831 |
if (pc == -1) |
|
1832 |
System.out.println(); |
|
1833 |
else |
|
1834 |
System.out.println(" at " + pc); |
|
1835 |
System.err.println(" stack (from bottom):"); |
|
1836 |
for (int i=0; i<stacksize; i++) |
|
1837 |
System.err.println(" " + i + ": " + stack[i]); |
|
1838 |
||
1839 |
int lastLocal = 0; |
|
1840 |
for (int i=max_locals-1; i>=0; i--) { |
|
1841 |
if (defined.isMember(i)) { |
|
1842 |
lastLocal = i; |
|
1843 |
break; |
|
1844 |
} |
|
1845 |
} |
|
1846 |
if (lastLocal >= 0) |
|
1847 |
System.err.println(" locals:"); |
|
1848 |
for (int i=0; i<=lastLocal; i++) { |
|
1849 |
System.err.print(" " + i + ": "); |
|
1850 |
if (defined.isMember(i)) { |
|
1851 |
LocalVar var = lvar[i]; |
|
1852 |
if (var == null) { |
|
1853 |
System.err.println("(none)"); |
|
1854 |
} else if (var.sym == null) |
|
1855 |
System.err.println("UNKNOWN!"); |
|
1856 |
else |
|
1857 |
System.err.println("" + var.sym + " of type " + |
|
1858 |
var.sym.erasure(types)); |
|
1859 |
} else { |
|
1860 |
System.err.println("undefined"); |
|
1861 |
} |
|
1862 |
} |
|
1863 |
if (nlocks != 0) { |
|
1864 |
System.err.print(" locks:"); |
|
1865 |
for (int i=0; i<nlocks; i++) { |
|
1866 |
System.err.print(" " + locks[i]); |
|
1867 |
} |
|
1868 |
System.err.println(); |
|
1869 |
} |
|
1870 |
} |
|
1871 |
} |
|
1872 |
||
18646
e628560a86d1
8017104: javac should have a class for primitive types that inherits from Type
vromero
parents:
18644
diff
changeset
|
1873 |
static final Type jsrReturnValue = new JCPrimitiveType(INT, null); |
10 | 1874 |
|
1875 |
||
1876 |
/* ************************************************************************** |
|
1877 |
* Local variables |
|
1878 |
****************************************************************************/ |
|
1879 |
||
1880 |
/** A live range of a local variable. */ |
|
1881 |
static class LocalVar { |
|
1882 |
final VarSymbol sym; |
|
1883 |
final char reg; |
|
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1884 |
|
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1885 |
class Range { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1886 |
char start_pc = Character.MAX_VALUE; |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1887 |
char length = Character.MAX_VALUE; |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1888 |
|
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1889 |
Range() {} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1890 |
|
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1891 |
Range(char start) { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1892 |
this.start_pc = start; |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1893 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1894 |
|
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1895 |
Range(char start, char length) { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1896 |
this.start_pc = start; |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1897 |
this.length = length; |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1898 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1899 |
|
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1900 |
boolean closed() { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1901 |
return start_pc != Character.MAX_VALUE && length != Character.MAX_VALUE; |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1902 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1903 |
|
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1904 |
@Override |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1905 |
public String toString() { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1906 |
int currentStartPC = start_pc; |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1907 |
int currentLength = length; |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1908 |
return "startpc = " + currentStartPC + " length " + currentLength; |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1909 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1910 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1911 |
|
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1912 |
java.util.List<Range> aliveRanges = new java.util.ArrayList<>(); |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1913 |
|
10 | 1914 |
LocalVar(VarSymbol v) { |
1915 |
this.sym = v; |
|
1916 |
this.reg = (char)v.adr; |
|
1917 |
} |
|
1918 |
public LocalVar dup() { |
|
1919 |
return new LocalVar(sym); |
|
1920 |
} |
|
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1921 |
|
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1922 |
Range firstRange() { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1923 |
return aliveRanges.isEmpty() ? null : aliveRanges.get(0); |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1924 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1925 |
|
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1926 |
Range lastRange() { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1927 |
return aliveRanges.isEmpty() ? null : aliveRanges.get(aliveRanges.size() - 1); |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1928 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1929 |
|
24648
3b639cd0c8bd
8037937: javac: AssertionError during LVT generation, wrong variable ranges
vromero
parents:
24396
diff
changeset
|
1930 |
void removeLastRange() { |
3b639cd0c8bd
8037937: javac: AssertionError during LVT generation, wrong variable ranges
vromero
parents:
24396
diff
changeset
|
1931 |
Range lastRange = lastRange(); |
3b639cd0c8bd
8037937: javac: AssertionError during LVT generation, wrong variable ranges
vromero
parents:
24396
diff
changeset
|
1932 |
if (lastRange != null) { |
3b639cd0c8bd
8037937: javac: AssertionError during LVT generation, wrong variable ranges
vromero
parents:
24396
diff
changeset
|
1933 |
aliveRanges.remove(lastRange); |
3b639cd0c8bd
8037937: javac: AssertionError during LVT generation, wrong variable ranges
vromero
parents:
24396
diff
changeset
|
1934 |
} |
3b639cd0c8bd
8037937: javac: AssertionError during LVT generation, wrong variable ranges
vromero
parents:
24396
diff
changeset
|
1935 |
} |
3b639cd0c8bd
8037937: javac: AssertionError during LVT generation, wrong variable ranges
vromero
parents:
24396
diff
changeset
|
1936 |
|
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1937 |
@Override |
10 | 1938 |
public String toString() { |
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1939 |
if (aliveRanges == null) { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1940 |
return "empty local var"; |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1941 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1942 |
StringBuilder sb = new StringBuilder().append(sym) |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1943 |
.append(" in register ").append((int)reg).append(" \n"); |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1944 |
for (Range r : aliveRanges) { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1945 |
sb.append(" starts at pc=").append(Integer.toString(((int)r.start_pc))) |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1946 |
.append(" length=").append(Integer.toString(((int)r.length))) |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1947 |
.append("\n"); |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1948 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1949 |
return sb.toString(); |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1950 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1951 |
|
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1952 |
public void openRange(char start) { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1953 |
if (!hasOpenRange()) { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1954 |
aliveRanges.add(new Range(start)); |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1955 |
} |
10 | 1956 |
} |
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1957 |
|
25298 | 1958 |
public void closeRange(char length) { |
1959 |
if (isLastRangeInitialized() && length > 0) { |
|
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1960 |
Range range = lastRange(); |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1961 |
if (range != null) { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1962 |
if (range.length == Character.MAX_VALUE) { |
25298 | 1963 |
range.length = length; |
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1964 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1965 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1966 |
} else { |
24648
3b639cd0c8bd
8037937: javac: AssertionError during LVT generation, wrong variable ranges
vromero
parents:
24396
diff
changeset
|
1967 |
removeLastRange(); |
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1968 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1969 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1970 |
|
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1971 |
public boolean hasOpenRange() { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1972 |
if (aliveRanges.isEmpty()) { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1973 |
return false; |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1974 |
} |
24648
3b639cd0c8bd
8037937: javac: AssertionError during LVT generation, wrong variable ranges
vromero
parents:
24396
diff
changeset
|
1975 |
return lastRange().length == Character.MAX_VALUE; |
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1976 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1977 |
|
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1978 |
public boolean isLastRangeInitialized() { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1979 |
if (aliveRanges.isEmpty()) { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1980 |
return false; |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1981 |
} |
24648
3b639cd0c8bd
8037937: javac: AssertionError during LVT generation, wrong variable ranges
vromero
parents:
24396
diff
changeset
|
1982 |
return lastRange().start_pc != Character.MAX_VALUE; |
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1983 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1984 |
|
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1985 |
public Range getWidestRange() { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1986 |
if (aliveRanges.isEmpty()) { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1987 |
return new Range(); |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1988 |
} else { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1989 |
Range firstRange = firstRange(); |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1990 |
Range lastRange = lastRange(); |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1991 |
char length = (char)(lastRange.length + (lastRange.start_pc - firstRange.start_pc)); |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1992 |
return new Range(firstRange.start_pc, length); |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1993 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1994 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
1995 |
|
22163 | 1996 |
} |
10 | 1997 |
|
1998 |
/** Local variables, indexed by register. */ |
|
1999 |
LocalVar[] lvar; |
|
2000 |
||
2001 |
/** Add a new local variable. */ |
|
2002 |
private void addLocalVar(VarSymbol v) { |
|
2003 |
int adr = v.adr; |
|
14049
3207422a0f9b
7193657: provide internal ArrayUtils class to simplify common usage of arrays in javac
jjg
parents:
14046
diff
changeset
|
2004 |
lvar = ArrayUtils.ensureCapacity(lvar, adr+1); |
8032 | 2005 |
Assert.checkNull(lvar[adr]); |
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2006 |
if (pendingJumps != null) { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2007 |
resolvePending(); |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2008 |
} |
10 | 2009 |
lvar[adr] = new LocalVar(v); |
2010 |
state.defined.excl(adr); |
|
2011 |
} |
|
2012 |
||
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2013 |
void adjustAliveRanges(int oldCP, int delta) { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2014 |
for (LocalVar localVar: lvar) { |
26784
6be305e56bcb
8058708: java.lang.AssertionError compiling source code
vromero
parents:
25874
diff
changeset
|
2015 |
if (localVar != null) { |
6be305e56bcb
8058708: java.lang.AssertionError compiling source code
vromero
parents:
25874
diff
changeset
|
2016 |
for (LocalVar.Range range: localVar.aliveRanges) { |
6be305e56bcb
8058708: java.lang.AssertionError compiling source code
vromero
parents:
25874
diff
changeset
|
2017 |
if (range.closed() && range.start_pc + range.length >= oldCP) { |
6be305e56bcb
8058708: java.lang.AssertionError compiling source code
vromero
parents:
25874
diff
changeset
|
2018 |
range.length += delta; |
6be305e56bcb
8058708: java.lang.AssertionError compiling source code
vromero
parents:
25874
diff
changeset
|
2019 |
} |
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2020 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2021 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2022 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2023 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2024 |
|
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2025 |
/** |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2026 |
* Calculates the size of the LocalVariableTable. |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2027 |
*/ |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2028 |
public int getLVTSize() { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2029 |
int result = varBufferSize; |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2030 |
for (int i = 0; i < varBufferSize; i++) { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2031 |
LocalVar var = varBuffer[i]; |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2032 |
result += var.aliveRanges.size() - 1; |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2033 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2034 |
return result; |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2035 |
} |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2036 |
|
10 | 2037 |
/** Set the current variable defined state. */ |
2038 |
public void setDefined(Bits newDefined) { |
|
2039 |
if (alive && newDefined != state.defined) { |
|
17282
c6964ad7df63
8008562: javac, a refactoring to Bits is necessary in order to provide a change history
vromero
parents:
16807
diff
changeset
|
2040 |
Bits diff = new Bits(state.defined).xorSet(newDefined); |
10 | 2041 |
for (int adr = diff.nextBit(0); |
2042 |
adr >= 0; |
|
2043 |
adr = diff.nextBit(adr+1)) { |
|
2044 |
if (adr >= nextreg) |
|
2045 |
state.defined.excl(adr); |
|
2046 |
else if (state.defined.isMember(adr)) |
|
2047 |
setUndefined(adr); |
|
2048 |
else |
|
2049 |
setDefined(adr); |
|
2050 |
} |
|
2051 |
} |
|
2052 |
} |
|
2053 |
||
2054 |
/** Mark a register as being (possibly) defined. */ |
|
2055 |
public void setDefined(int adr) { |
|
2056 |
LocalVar v = lvar[adr]; |
|
2057 |
if (v == null) { |
|
2058 |
state.defined.excl(adr); |
|
2059 |
} else { |
|
2060 |
state.defined.incl(adr); |
|
2061 |
if (cp < Character.MAX_VALUE) { |
|
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2062 |
v.openRange((char)cp); |
10 | 2063 |
} |
2064 |
} |
|
2065 |
} |
|
2066 |
||
2067 |
/** Mark a register as being undefined. */ |
|
2068 |
public void setUndefined(int adr) { |
|
2069 |
state.defined.excl(adr); |
|
2070 |
if (adr < lvar.length && |
|
2071 |
lvar[adr] != null && |
|
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2072 |
lvar[adr].isLastRangeInitialized()) { |
10 | 2073 |
LocalVar v = lvar[adr]; |
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2074 |
char length = (char)(curCP() - v.lastRange().start_pc); |
25298 | 2075 |
if (length < Character.MAX_VALUE) { |
10 | 2076 |
lvar[adr] = v.dup(); |
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2077 |
v.closeRange(length); |
10 | 2078 |
putVar(v); |
59285
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2079 |
fillLocalVarPosition(v); |
10 | 2080 |
} else { |
24648
3b639cd0c8bd
8037937: javac: AssertionError during LVT generation, wrong variable ranges
vromero
parents:
24396
diff
changeset
|
2081 |
v.removeLastRange(); |
10 | 2082 |
} |
2083 |
} |
|
2084 |
} |
|
2085 |
||
2086 |
/** End the scope of a variable. */ |
|
2087 |
private void endScope(int adr) { |
|
2088 |
LocalVar v = lvar[adr]; |
|
2089 |
if (v != null) { |
|
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2090 |
if (v.isLastRangeInitialized()) { |
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2091 |
char length = (char)(curCP() - v.lastRange().start_pc); |
10 | 2092 |
if (length < Character.MAX_VALUE) { |
19941
8b91e8eb2d20
7047734: javac, the LVT is not generated correctly in several scenarios
vromero
parents:
18646
diff
changeset
|
2093 |
v.closeRange(length); |
10 | 2094 |
putVar(v); |
15385 | 2095 |
fillLocalVarPosition(v); |
10 | 2096 |
} |
2097 |
} |
|
21703
b12ce201d445
8027660: javac crash while creating LVT entry for a local variable defined in an inner block
vromero
parents:
20249
diff
changeset
|
2098 |
/** the call to curCP() can implicitly adjust the current cp, if so |
b12ce201d445
8027660: javac crash while creating LVT entry for a local variable defined in an inner block
vromero
parents:
20249
diff
changeset
|
2099 |
* the alive range of local variables may be modified. Thus we need |
b12ce201d445
8027660: javac crash while creating LVT entry for a local variable defined in an inner block
vromero
parents:
20249
diff
changeset
|
2100 |
* all of them. For this reason assigning null to the given address |
b12ce201d445
8027660: javac crash while creating LVT entry for a local variable defined in an inner block
vromero
parents:
20249
diff
changeset
|
2101 |
* should be the last action to do. |
b12ce201d445
8027660: javac crash while creating LVT entry for a local variable defined in an inner block
vromero
parents:
20249
diff
changeset
|
2102 |
*/ |
b12ce201d445
8027660: javac crash while creating LVT entry for a local variable defined in an inner block
vromero
parents:
20249
diff
changeset
|
2103 |
lvar[adr] = null; |
10 | 2104 |
} |
2105 |
state.defined.excl(adr); |
|
2106 |
} |
|
2107 |
||
15385 | 2108 |
private void fillLocalVarPosition(LocalVar lv) { |
48513
5b834ec96236
8187805: bogus RuntimeVisibleTypeAnnotations for unused local in a block
vromero
parents:
47216
diff
changeset
|
2109 |
if (lv == null || lv.sym == null || lv.sym.isExceptionParameter()|| !lv.sym.hasTypeAnnotations()) |
15385 | 2110 |
return; |
59285
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2111 |
LocalVar.Range[] validRanges = lv.aliveRanges.stream().filter(r -> r.closed() && r.length > 0).toArray(s -> new LocalVar.Range[s]); |
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2112 |
if (validRanges.length == 0) |
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2113 |
return ; |
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2114 |
int[] lvarOffset = Arrays.stream(validRanges).mapToInt(r -> r.start_pc).toArray(); |
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2115 |
int[] lvarLength = Arrays.stream(validRanges).mapToInt(r -> r.length).toArray(); |
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2116 |
int[] lvarIndex = Arrays.stream(validRanges).mapToInt(r -> lv.reg).toArray(); |
15385 | 2117 |
for (Attribute.TypeCompound ta : lv.sym.getRawTypeAttributes()) { |
2118 |
TypeAnnotationPosition p = ta.position; |
|
59285
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2119 |
p.lvarOffset = appendArray(p.lvarOffset, lvarOffset); |
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2120 |
p.lvarLength = appendArray(p.lvarLength, lvarLength); |
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2121 |
p.lvarIndex = appendArray(p.lvarIndex, lvarIndex); |
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2122 |
p.isValidOffset = true; |
15385 | 2123 |
} |
2124 |
} |
|
2125 |
||
59285
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2126 |
private int[] appendArray(int[] source, int[] append) { |
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2127 |
if (source == null || source.length == 0) return append; |
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2128 |
|
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2129 |
int[] result = new int[source.length + append.length]; |
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2130 |
|
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2131 |
System.arraycopy(source, 0, result, 0, source.length); |
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2132 |
System.arraycopy(append, 0, result, source.length, append.length); |
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2133 |
return result; |
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2134 |
} |
7799a51dbe30
8231826: Implement javac changes for pattern matching for instanceof
jlahoda
parents:
54568
diff
changeset
|
2135 |
|
15385 | 2136 |
// Method to be called after compressCatchTable to |
2137 |
// fill in the exception table index for type |
|
2138 |
// annotations on exception parameters. |
|
2139 |
public void fillExceptionParameterPositions() { |
|
2140 |
for (int i = 0; i < varBufferSize; ++i) { |
|
2141 |
LocalVar lv = varBuffer[i]; |
|
2142 |
if (lv == null || lv.sym == null |
|
18010
604faee85350
8004643: Reduce javac space overhead introduced with compiler support for repeating annotations
jjg
parents:
17578
diff
changeset
|
2143 |
|| !lv.sym.hasTypeAnnotations() |
15385 | 2144 |
|| !lv.sym.isExceptionParameter()) |
17578 | 2145 |
continue; |
15385 | 2146 |
|
2147 |
for (Attribute.TypeCompound ta : lv.sym.getRawTypeAttributes()) { |
|
2148 |
TypeAnnotationPosition p = ta.position; |
|
23975
c7c81595aea9
8040319: Clean up type annotation exception index generating code in Code.java
emc
parents:
23966
diff
changeset
|
2149 |
if (p.hasCatchType()) { |
24396 | 2150 |
final int idx = findExceptionIndex(p); |
23975
c7c81595aea9
8040319: Clean up type annotation exception index generating code in Code.java
emc
parents:
23966
diff
changeset
|
2151 |
if (idx == -1) |
c7c81595aea9
8040319: Clean up type annotation exception index generating code in Code.java
emc
parents:
23966
diff
changeset
|
2152 |
Assert.error("Could not find exception index for type annotation " + |
c7c81595aea9
8040319: Clean up type annotation exception index generating code in Code.java
emc
parents:
23966
diff
changeset
|
2153 |
ta + " on exception parameter"); |
c7c81595aea9
8040319: Clean up type annotation exception index generating code in Code.java
emc
parents:
23966
diff
changeset
|
2154 |
p.setExceptionIndex(idx); |
17578 | 2155 |
} |
15385 | 2156 |
} |
2157 |
} |
|
2158 |
} |
|
2159 |
||
24396 | 2160 |
private int findExceptionIndex(TypeAnnotationPosition p) { |
2161 |
final int catchType = p.getCatchType(); |
|
2162 |
final int startPos = p.getStartPos(); |
|
2163 |
final int len = catchInfo.length(); |
|
15385 | 2164 |
List<char[]> iter = catchInfo.toList(); |
2165 |
for (int i = 0; i < len; ++i) { |
|
2166 |
char[] catchEntry = iter.head; |
|
2167 |
iter = iter.tail; |
|
24396 | 2168 |
int ct = catchEntry[3]; |
2169 |
int sp = catchEntry[0]; |
|
2170 |
if (catchType == ct && sp == startPos) { |
|
15385 | 2171 |
return i; |
2172 |
} |
|
2173 |
} |
|
2174 |
return -1; |
|
2175 |
} |
|
2176 |
||
10 | 2177 |
/** Put a live variable range into the buffer to be output to the |
2178 |
* class file. |
|
2179 |
*/ |
|
2180 |
void putVar(LocalVar var) { |
|
15385 | 2181 |
// Keep local variables if |
2182 |
// 1) we need them for debug information |
|
2183 |
// 2) it is an exception type and it contains type annotations |
|
22443
0922d94d0576
8028576: Incorrect RuntimeVisibleTypeAnnotations for exception parameters when not generating debuging info
jlahoda
parents:
22163
diff
changeset
|
2184 |
boolean keepLocalVariables = varDebugInfo || |
0922d94d0576
8028576: Incorrect RuntimeVisibleTypeAnnotations for exception parameters when not generating debuging info
jlahoda
parents:
22163
diff
changeset
|
2185 |
(var.sym.isExceptionParameter() && var.sym.hasTypeAnnotations()); |
0922d94d0576
8028576: Incorrect RuntimeVisibleTypeAnnotations for exception parameters when not generating debuging info
jlahoda
parents:
22163
diff
changeset
|
2186 |
if (!keepLocalVariables) return; |
29772
4e4e74b99d27
8054220: Debugger doesn't show variables *outside* lambda
jlahoda
parents:
28330
diff
changeset
|
2187 |
//don't keep synthetic vars, unless they are lambda method parameters |
4e4e74b99d27
8054220: Debugger doesn't show variables *outside* lambda
jlahoda
parents:
28330
diff
changeset
|
2188 |
boolean ignoredSyntheticVar = (var.sym.flags() & Flags.SYNTHETIC) != 0 && |
4e4e74b99d27
8054220: Debugger doesn't show variables *outside* lambda
jlahoda
parents:
28330
diff
changeset
|
2189 |
((var.sym.owner.flags() & Flags.LAMBDA_METHOD) == 0 || |
4e4e74b99d27
8054220: Debugger doesn't show variables *outside* lambda
jlahoda
parents:
28330
diff
changeset
|
2190 |
(var.sym.flags() & Flags.PARAMETER) == 0); |
4e4e74b99d27
8054220: Debugger doesn't show variables *outside* lambda
jlahoda
parents:
28330
diff
changeset
|
2191 |
if (ignoredSyntheticVar) return; |
10 | 2192 |
if (varBuffer == null) |
2193 |
varBuffer = new LocalVar[20]; |
|
14049
3207422a0f9b
7193657: provide internal ArrayUtils class to simplify common usage of arrays in javac
jjg
parents:
14046
diff
changeset
|
2194 |
else |
3207422a0f9b
7193657: provide internal ArrayUtils class to simplify common usage of arrays in javac
jjg
parents:
14046
diff
changeset
|
2195 |
varBuffer = ArrayUtils.ensureCapacity(varBuffer, varBufferSize); |
10 | 2196 |
varBuffer[varBufferSize++] = var; |
2197 |
} |
|
2198 |
||
2199 |
/** Previously live local variables, to be put into the variable table. */ |
|
2200 |
LocalVar[] varBuffer; |
|
2201 |
int varBufferSize; |
|
2202 |
||
2203 |
/** Create a new local variable address and return it. |
|
2204 |
*/ |
|
2205 |
private int newLocal(int typecode) { |
|
2206 |
int reg = nextreg; |
|
2207 |
int w = width(typecode); |
|
2208 |
nextreg = reg + w; |
|
2209 |
if (nextreg > max_locals) max_locals = nextreg; |
|
2210 |
return reg; |
|
2211 |
} |
|
2212 |
||
2213 |
private int newLocal(Type type) { |
|
2214 |
return newLocal(typecode(type)); |
|
2215 |
} |
|
2216 |
||
2217 |
public int newLocal(VarSymbol v) { |
|
2218 |
int reg = v.adr = newLocal(v.erasure(types)); |
|
2219 |
addLocalVar(v); |
|
2220 |
return reg; |
|
2221 |
} |
|
2222 |
||
2223 |
/** Start a set of fresh registers. |
|
2224 |
*/ |
|
2225 |
public void newRegSegment() { |
|
2226 |
nextreg = max_locals; |
|
2227 |
} |
|
2228 |
||
13844 | 2229 |
/** End scopes of all variables with registers ≥ first. |
10 | 2230 |
*/ |
2231 |
public void endScopes(int first) { |
|
2232 |
int prevNextReg = nextreg; |
|
2233 |
nextreg = first; |
|
2234 |
for (int i = nextreg; i < prevNextReg; i++) endScope(i); |
|
2235 |
} |
|
2236 |
||
2237 |
/************************************************************************** |
|
2238 |
* static tables |
|
2239 |
*************************************************************************/ |
|
2240 |
||
2241 |
public static String mnem(int opcode) { |
|
2242 |
return Mneumonics.mnem[opcode]; |
|
2243 |
} |
|
2244 |
||
2245 |
private static class Mneumonics { |
|
2246 |
private final static String[] mnem = new String[ByteCodeCount]; |
|
2247 |
static { |
|
2248 |
mnem[nop] = "nop"; |
|
2249 |
mnem[aconst_null] = "aconst_null"; |
|
2250 |
mnem[iconst_m1] = "iconst_m1"; |
|
2251 |
mnem[iconst_0] = "iconst_0"; |
|
2252 |
mnem[iconst_1] = "iconst_1"; |
|
2253 |
mnem[iconst_2] = "iconst_2"; |
|
2254 |
mnem[iconst_3] = "iconst_3"; |
|
2255 |
mnem[iconst_4] = "iconst_4"; |
|
2256 |
mnem[iconst_5] = "iconst_5"; |
|
2257 |
mnem[lconst_0] = "lconst_0"; |
|
2258 |
mnem[lconst_1] = "lconst_1"; |
|
2259 |
mnem[fconst_0] = "fconst_0"; |
|
2260 |
mnem[fconst_1] = "fconst_1"; |
|
2261 |
mnem[fconst_2] = "fconst_2"; |
|
2262 |
mnem[dconst_0] = "dconst_0"; |
|
2263 |
mnem[dconst_1] = "dconst_1"; |
|
2264 |
mnem[bipush] = "bipush"; |
|
2265 |
mnem[sipush] = "sipush"; |
|
2266 |
mnem[ldc1] = "ldc1"; |
|
2267 |
mnem[ldc2] = "ldc2"; |
|
2268 |
mnem[ldc2w] = "ldc2w"; |
|
2269 |
mnem[iload] = "iload"; |
|
2270 |
mnem[lload] = "lload"; |
|
2271 |
mnem[fload] = "fload"; |
|
2272 |
mnem[dload] = "dload"; |
|
2273 |
mnem[aload] = "aload"; |
|
2274 |
mnem[iload_0] = "iload_0"; |
|
2275 |
mnem[lload_0] = "lload_0"; |
|
2276 |
mnem[fload_0] = "fload_0"; |
|
2277 |
mnem[dload_0] = "dload_0"; |
|
2278 |
mnem[aload_0] = "aload_0"; |
|
2279 |
mnem[iload_1] = "iload_1"; |
|
2280 |
mnem[lload_1] = "lload_1"; |
|
2281 |
mnem[fload_1] = "fload_1"; |
|
2282 |
mnem[dload_1] = "dload_1"; |
|
2283 |
mnem[aload_1] = "aload_1"; |
|
2284 |
mnem[iload_2] = "iload_2"; |
|
2285 |
mnem[lload_2] = "lload_2"; |
|
2286 |
mnem[fload_2] = "fload_2"; |
|
2287 |
mnem[dload_2] = "dload_2"; |
|
2288 |
mnem[aload_2] = "aload_2"; |
|
2289 |
mnem[iload_3] = "iload_3"; |
|
2290 |
mnem[lload_3] = "lload_3"; |
|
2291 |
mnem[fload_3] = "fload_3"; |
|
2292 |
mnem[dload_3] = "dload_3"; |
|
2293 |
mnem[aload_3] = "aload_3"; |
|
2294 |
mnem[iaload] = "iaload"; |
|
2295 |
mnem[laload] = "laload"; |
|
2296 |
mnem[faload] = "faload"; |
|
2297 |
mnem[daload] = "daload"; |
|
2298 |
mnem[aaload] = "aaload"; |
|
2299 |
mnem[baload] = "baload"; |
|
2300 |
mnem[caload] = "caload"; |
|
2301 |
mnem[saload] = "saload"; |
|
2302 |
mnem[istore] = "istore"; |
|
2303 |
mnem[lstore] = "lstore"; |
|
2304 |
mnem[fstore] = "fstore"; |
|
2305 |
mnem[dstore] = "dstore"; |
|
2306 |
mnem[astore] = "astore"; |
|
2307 |
mnem[istore_0] = "istore_0"; |
|
2308 |
mnem[lstore_0] = "lstore_0"; |
|
2309 |
mnem[fstore_0] = "fstore_0"; |
|
2310 |
mnem[dstore_0] = "dstore_0"; |
|
2311 |
mnem[astore_0] = "astore_0"; |
|
2312 |
mnem[istore_1] = "istore_1"; |
|
2313 |
mnem[lstore_1] = "lstore_1"; |
|
2314 |
mnem[fstore_1] = "fstore_1"; |
|
2315 |
mnem[dstore_1] = "dstore_1"; |
|
2316 |
mnem[astore_1] = "astore_1"; |
|
2317 |
mnem[istore_2] = "istore_2"; |
|
2318 |
mnem[lstore_2] = "lstore_2"; |
|
2319 |
mnem[fstore_2] = "fstore_2"; |
|
2320 |
mnem[dstore_2] = "dstore_2"; |
|
2321 |
mnem[astore_2] = "astore_2"; |
|
2322 |
mnem[istore_3] = "istore_3"; |
|
2323 |
mnem[lstore_3] = "lstore_3"; |
|
2324 |
mnem[fstore_3] = "fstore_3"; |
|
2325 |
mnem[dstore_3] = "dstore_3"; |
|
2326 |
mnem[astore_3] = "astore_3"; |
|
2327 |
mnem[iastore] = "iastore"; |
|
2328 |
mnem[lastore] = "lastore"; |
|
2329 |
mnem[fastore] = "fastore"; |
|
2330 |
mnem[dastore] = "dastore"; |
|
2331 |
mnem[aastore] = "aastore"; |
|
2332 |
mnem[bastore] = "bastore"; |
|
2333 |
mnem[castore] = "castore"; |
|
2334 |
mnem[sastore] = "sastore"; |
|
2335 |
mnem[pop] = "pop"; |
|
2336 |
mnem[pop2] = "pop2"; |
|
2337 |
mnem[dup] = "dup"; |
|
2338 |
mnem[dup_x1] = "dup_x1"; |
|
2339 |
mnem[dup_x2] = "dup_x2"; |
|
2340 |
mnem[dup2] = "dup2"; |
|
2341 |
mnem[dup2_x1] = "dup2_x1"; |
|
2342 |
mnem[dup2_x2] = "dup2_x2"; |
|
2343 |
mnem[swap] = "swap"; |
|
2344 |
mnem[iadd] = "iadd"; |
|
2345 |
mnem[ladd] = "ladd"; |
|
2346 |
mnem[fadd] = "fadd"; |
|
2347 |
mnem[dadd] = "dadd"; |
|
2348 |
mnem[isub] = "isub"; |
|
2349 |
mnem[lsub] = "lsub"; |
|
2350 |
mnem[fsub] = "fsub"; |
|
2351 |
mnem[dsub] = "dsub"; |
|
2352 |
mnem[imul] = "imul"; |
|
2353 |
mnem[lmul] = "lmul"; |
|
2354 |
mnem[fmul] = "fmul"; |
|
2355 |
mnem[dmul] = "dmul"; |
|
2356 |
mnem[idiv] = "idiv"; |
|
2357 |
mnem[ldiv] = "ldiv"; |
|
2358 |
mnem[fdiv] = "fdiv"; |
|
2359 |
mnem[ddiv] = "ddiv"; |
|
2360 |
mnem[imod] = "imod"; |
|
2361 |
mnem[lmod] = "lmod"; |
|
2362 |
mnem[fmod] = "fmod"; |
|
2363 |
mnem[dmod] = "dmod"; |
|
2364 |
mnem[ineg] = "ineg"; |
|
2365 |
mnem[lneg] = "lneg"; |
|
2366 |
mnem[fneg] = "fneg"; |
|
2367 |
mnem[dneg] = "dneg"; |
|
2368 |
mnem[ishl] = "ishl"; |
|
2369 |
mnem[lshl] = "lshl"; |
|
2370 |
mnem[ishr] = "ishr"; |
|
2371 |
mnem[lshr] = "lshr"; |
|
2372 |
mnem[iushr] = "iushr"; |
|
2373 |
mnem[lushr] = "lushr"; |
|
2374 |
mnem[iand] = "iand"; |
|
2375 |
mnem[land] = "land"; |
|
2376 |
mnem[ior] = "ior"; |
|
2377 |
mnem[lor] = "lor"; |
|
2378 |
mnem[ixor] = "ixor"; |
|
2379 |
mnem[lxor] = "lxor"; |
|
2380 |
mnem[iinc] = "iinc"; |
|
2381 |
mnem[i2l] = "i2l"; |
|
2382 |
mnem[i2f] = "i2f"; |
|
2383 |
mnem[i2d] = "i2d"; |
|
2384 |
mnem[l2i] = "l2i"; |
|
2385 |
mnem[l2f] = "l2f"; |
|
2386 |
mnem[l2d] = "l2d"; |
|
2387 |
mnem[f2i] = "f2i"; |
|
2388 |
mnem[f2l] = "f2l"; |
|
2389 |
mnem[f2d] = "f2d"; |
|
2390 |
mnem[d2i] = "d2i"; |
|
2391 |
mnem[d2l] = "d2l"; |
|
2392 |
mnem[d2f] = "d2f"; |
|
2393 |
mnem[int2byte] = "int2byte"; |
|
2394 |
mnem[int2char] = "int2char"; |
|
2395 |
mnem[int2short] = "int2short"; |
|
2396 |
mnem[lcmp] = "lcmp"; |
|
2397 |
mnem[fcmpl] = "fcmpl"; |
|
2398 |
mnem[fcmpg] = "fcmpg"; |
|
2399 |
mnem[dcmpl] = "dcmpl"; |
|
2400 |
mnem[dcmpg] = "dcmpg"; |
|
2401 |
mnem[ifeq] = "ifeq"; |
|
2402 |
mnem[ifne] = "ifne"; |
|
2403 |
mnem[iflt] = "iflt"; |
|
2404 |
mnem[ifge] = "ifge"; |
|
2405 |
mnem[ifgt] = "ifgt"; |
|
2406 |
mnem[ifle] = "ifle"; |
|
2407 |
mnem[if_icmpeq] = "if_icmpeq"; |
|
2408 |
mnem[if_icmpne] = "if_icmpne"; |
|
2409 |
mnem[if_icmplt] = "if_icmplt"; |
|
2410 |
mnem[if_icmpge] = "if_icmpge"; |
|
2411 |
mnem[if_icmpgt] = "if_icmpgt"; |
|
2412 |
mnem[if_icmple] = "if_icmple"; |
|
2413 |
mnem[if_acmpeq] = "if_acmpeq"; |
|
2414 |
mnem[if_acmpne] = "if_acmpne"; |
|
2415 |
mnem[goto_] = "goto_"; |
|
2416 |
mnem[jsr] = "jsr"; |
|
2417 |
mnem[ret] = "ret"; |
|
2418 |
mnem[tableswitch] = "tableswitch"; |
|
2419 |
mnem[lookupswitch] = "lookupswitch"; |
|
2420 |
mnem[ireturn] = "ireturn"; |
|
2421 |
mnem[lreturn] = "lreturn"; |
|
2422 |
mnem[freturn] = "freturn"; |
|
2423 |
mnem[dreturn] = "dreturn"; |
|
2424 |
mnem[areturn] = "areturn"; |
|
2425 |
mnem[return_] = "return_"; |
|
2426 |
mnem[getstatic] = "getstatic"; |
|
2427 |
mnem[putstatic] = "putstatic"; |
|
2428 |
mnem[getfield] = "getfield"; |
|
2429 |
mnem[putfield] = "putfield"; |
|
2430 |
mnem[invokevirtual] = "invokevirtual"; |
|
2431 |
mnem[invokespecial] = "invokespecial"; |
|
2432 |
mnem[invokestatic] = "invokestatic"; |
|
2433 |
mnem[invokeinterface] = "invokeinterface"; |
|
2723
b659ca23d5f5
6829189: Java programming with JSR 292 needs language support
jrose
parents:
1264
diff
changeset
|
2434 |
mnem[invokedynamic] = "invokedynamic"; |
10 | 2435 |
mnem[new_] = "new_"; |
2436 |
mnem[newarray] = "newarray"; |
|
2437 |
mnem[anewarray] = "anewarray"; |
|
2438 |
mnem[arraylength] = "arraylength"; |
|
2439 |
mnem[athrow] = "athrow"; |
|
2440 |
mnem[checkcast] = "checkcast"; |
|
2441 |
mnem[instanceof_] = "instanceof_"; |
|
2442 |
mnem[monitorenter] = "monitorenter"; |
|
2443 |
mnem[monitorexit] = "monitorexit"; |
|
2444 |
mnem[wide] = "wide"; |
|
2445 |
mnem[multianewarray] = "multianewarray"; |
|
2446 |
mnem[if_acmp_null] = "if_acmp_null"; |
|
2447 |
mnem[if_acmp_nonnull] = "if_acmp_nonnull"; |
|
2448 |
mnem[goto_w] = "goto_w"; |
|
2449 |
mnem[jsr_w] = "jsr_w"; |
|
2450 |
mnem[breakpoint] = "breakpoint"; |
|
2451 |
} |
|
2452 |
} |
|
2453 |
} |