Mercurial > hg > graal-jvmci-8
annotate jvmci/jdk.vm.ci.code/src/jdk/vm/ci/code/RegisterConfig.java @ 24218:719853999215 jvmci-0.32
Merge with jdk8u141-b15
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 14 Aug 2017 23:20:38 +0200 |
parents | 9e1235406b59 |
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rev | line source |
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1 /* |
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2 * Copyright (c) 2009, 2016, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 package jdk.vm.ci.code; |
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24 |
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25 import jdk.vm.ci.code.CallingConvention.Type; |
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26 import jdk.vm.ci.meta.JavaKind; |
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27 import jdk.vm.ci.meta.JavaType; |
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28 import jdk.vm.ci.meta.PlatformKind; |
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29 import jdk.vm.ci.meta.ValueKind; |
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30 |
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31 /** |
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32 * A register configuration binds roles and {@linkplain RegisterAttributes attributes} to physical |
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33 * registers. |
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34 */ |
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35 public interface RegisterConfig { |
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36 |
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37 /** |
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38 * Gets the register to be used for returning a value of a given kind. |
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39 */ |
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40 Register getReturnRegister(JavaKind kind); |
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41 |
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42 /** |
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43 * Gets the maximum allowed size of the frame. |
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44 */ |
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45 default int getMaximumFrameSize() { |
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46 return Integer.MAX_VALUE; |
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47 } |
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48 |
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49 /** |
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50 * Gets the register used as the frame pointer. Spill slots and outgoing stack-based arguments |
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51 * are addressed relative to this register. |
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52 */ |
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53 Register getFrameRegister(); |
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54 |
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55 /** |
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56 * Gets the calling convention describing how arguments are passed. |
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57 * |
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58 * @param type the type of calling convention being requested |
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59 * @param returnType the return type (can be null for methods returning {@code void}) |
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60 * @param parameterTypes the types of the arguments of the call |
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61 * @param valueKindFactory the factory to create custom {@link ValueKind ValueKinds} |
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62 */ |
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63 CallingConvention getCallingConvention(Type type, JavaType returnType, JavaType[] parameterTypes, ValueKindFactory<?> valueKindFactory); |
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64 |
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65 /** |
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66 * Gets the ordered set of registers that are can be used to pass parameters according to a |
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67 * given calling convention. |
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68 * |
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69 * @param type the type of calling convention |
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70 * @param kind specifies what kind of registers is being requested |
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71 * @return the ordered set of registers that may be used to pass parameters in a call conforming |
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72 * to {@code type} |
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73 */ |
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74 RegisterArray getCallingConventionRegisters(Type type, JavaKind kind); |
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75 |
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76 /** |
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77 * Gets the set of all registers that might be used by the register allocator. |
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78 * |
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79 * To get the set of registers the register allocator is allowed to use see |
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80 * {@link RegisterAllocationConfig#getAllocatableRegisters()} |
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81 */ |
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82 @SuppressWarnings("javadoc") |
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83 RegisterArray getAllocatableRegisters(); |
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84 |
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85 /** |
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86 * Filters a set of registers and returns only those that can be used by the register allocator |
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87 * for a value of a particular kind. |
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88 */ |
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89 RegisterArray filterAllocatableRegisters(PlatformKind kind, RegisterArray registers); |
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90 |
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91 /** |
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92 * Gets the registers whose values must be preserved by a method across any call it makes. |
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93 */ |
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94 RegisterArray getCallerSaveRegisters(); |
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95 |
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96 /** |
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97 * Gets the registers whose values must be preserved by the callee. |
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98 */ |
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99 RegisterArray getCalleeSaveRegisters(); |
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100 |
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101 /** |
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102 * Gets a map from register {@linkplain Register#number numbers} to register |
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103 * {@linkplain RegisterAttributes attributes} for this register configuration. |
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104 * |
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105 * @return an array where an element at index i holds the attributes of the register whose |
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106 * number is i |
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107 */ |
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108 RegisterAttributes[] getAttributesMap(); |
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109 |
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110 /** |
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111 * Determines if all {@link #getAllocatableRegisters() allocatable} registers are |
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112 * {@link #getCallerSaveRegisters() caller saved}. |
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added RegisterConfig.areAllAllocatableRegistersCallerSaved()
Doug Simon <doug.simon@oracle.com>
parents:
9425
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113 */ |
abf7cf57df5e
added RegisterConfig.areAllAllocatableRegistersCallerSaved()
Doug Simon <doug.simon@oracle.com>
parents:
9425
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114 boolean areAllAllocatableRegistersCallerSaved(); |
3733
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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115 } |