Mercurial > hg > truffle
annotate graal/com.oracle.jvmci.code/src/com/oracle/jvmci/code/RegisterConfig.java @ 21610:f555efead2f2
Fix options in makefile
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Fri, 29 May 2015 20:43:55 -0700 |
parents | 48c1ebd24120 |
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1 /* |
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2 * Copyright (c) 2009, 2011, 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 com.oracle.jvmci.code; |
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24 |
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25 import com.oracle.jvmci.meta.Kind; |
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26 import com.oracle.jvmci.meta.JavaType; |
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27 import com.oracle.jvmci.meta.PlatformKind; |
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28 import com.oracle.jvmci.code.CallingConvention.Type; |
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29 |
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30 /** |
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31 * A register configuration binds roles and {@linkplain RegisterAttributes attributes} to physical |
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32 * registers. |
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33 */ |
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34 public interface RegisterConfig { |
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35 |
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36 /** |
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37 * Gets the register to be used for returning a value of a given kind. |
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38 */ |
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39 Register getReturnRegister(Kind kind); |
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40 |
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41 /** |
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42 * Gets the maximum allowed size of the frame. |
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43 */ |
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44 default int getMaximumFrameSize() { |
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45 return Integer.MAX_VALUE; |
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46 } |
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47 |
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48 /** |
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49 * Gets the register to which {@link Register#Frame} and {@link Register#CallerFrame} are bound. |
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50 */ |
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51 Register getFrameRegister(); |
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52 |
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53 /** |
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54 * Gets the calling convention describing how arguments are passed. |
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55 * |
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56 * @param type the type of calling convention being requested |
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57 * @param returnType the return type (can be null for methods returning {@code void}) |
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58 * @param parameterTypes the types of the arguments of the call |
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59 * @param target the target platform |
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60 * @param stackOnly ignore registers |
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61 */ |
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62 CallingConvention getCallingConvention(Type type, JavaType returnType, JavaType[] parameterTypes, TargetDescription target, boolean stackOnly); |
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63 |
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64 /** |
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65 * Gets the ordered set of registers that are can be used to pass parameters according to a |
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66 * given calling convention. |
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67 * |
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68 * @param type the type of calling convention |
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69 * @param kind specifies what kind of registers is being requested |
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70 * @return the ordered set of registers that may be used to pass parameters in a call conforming |
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71 * to {@code type} |
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72 */ |
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73 Register[] getCallingConventionRegisters(Type type, Kind kind); |
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74 |
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75 /** |
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76 * Gets the set of all registers that might be used by the register allocator. |
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77 * |
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78 * To get the set of registers the register allocator is allowed to use see |
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79 * {@link RegisterAllocationConfig#getAllocatableRegisters()} |
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80 */ |
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81 @SuppressWarnings("javadoc") |
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82 Register[] getAllocatableRegisters(); |
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83 |
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84 /** |
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85 * Filters a set of registers and returns only those that can be used by the register allocator |
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86 * for a value of a particular kind. |
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87 */ |
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88 Register[] filterAllocatableRegisters(PlatformKind kind, Register[] registers); |
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89 |
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90 /** |
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91 * Gets the registers whose values must be preserved by a method across any call it makes. |
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92 */ |
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93 Register[] getCallerSaveRegisters(); |
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94 |
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95 /** |
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96 * Gets the layout of the callee save area of this register configuration. |
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97 * |
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98 * @return {@code null} if there is no callee save area |
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99 */ |
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100 CalleeSaveLayout getCalleeSaveLayout(); |
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101 |
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102 /** |
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103 * Gets a map from register {@linkplain Register#number numbers} to register |
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104 * {@linkplain RegisterAttributes attributes} for this register configuration. |
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105 * |
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106 * @return an array where an element at index i holds the attributes of the register whose |
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107 * number is i |
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108 */ |
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109 RegisterAttributes[] getAttributesMap(); |
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110 |
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111 /** |
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112 * Gets the register corresponding to a runtime-defined role. |
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113 * |
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114 * @param id the identifier of a runtime-defined register role |
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115 * @return the register playing the role specified by {@code id} |
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116 */ |
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117 Register getRegisterForRole(int id); |
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118 |
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119 /** |
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120 * Determines if all {@link #getAllocatableRegisters() allocatable} registers are |
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121 * {@link #getCallerSaveRegisters() caller saved}. |
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122 */ |
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123 boolean areAllAllocatableRegistersCallerSaved(); |
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124 } |