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1692
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1 /*
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1972
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2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
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1692
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3 * Copyright 2008, 2009 Red Hat, Inc.
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 *
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6 * This code is free software; you can redistribute it and/or modify it
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7 * under the terms of the GNU General Public License version 2 only, as
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8 * published by the Free Software Foundation.
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9 *
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10 * This code is distributed in the hope that it will be useful, but WITHOUT
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 * version 2 for more details (a copy is included in the LICENSE file that
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14 * accompanied this code).
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15 *
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16 * You should have received a copy of the GNU General Public License version
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17 * 2 along with this work; if not, write to the Free Software Foundation,
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19 *
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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21 * or visit www.oracle.com if you need additional information or have any
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22 * questions.
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23 *
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24 */
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25
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1972
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26 #ifndef SHARE_VM_SHARK_SHARKFUNCTION_HPP
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27 #define SHARE_VM_SHARK_SHARKFUNCTION_HPP
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28
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29 #include "ci/ciEnv.hpp"
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30 #include "ci/ciStreams.hpp"
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31 #include "ci/ciTypeFlow.hpp"
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32 #include "memory/allocation.hpp"
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33 #include "shark/llvmHeaders.hpp"
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34 #include "shark/llvmValue.hpp"
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35 #include "shark/sharkBuilder.hpp"
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36 #include "shark/sharkContext.hpp"
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37 #include "shark/sharkInvariants.hpp"
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38 #include "shark/sharkStack.hpp"
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39
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1692
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40 class SharkTopLevelBlock;
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41 class DeferredZeroCheck;
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42
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43 class SharkFunction : public SharkTargetInvariants {
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44 friend class SharkStackWithNormalFrame;
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45
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46 public:
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47 static llvm::Function* build(ciEnv* env,
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48 SharkBuilder* builder,
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49 ciTypeFlow* flow,
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50 const char* name) {
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51 SharkFunction function(env, builder, flow, name);
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52 return function.function();
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53 }
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54
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55 private:
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56 SharkFunction(ciEnv* env,
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57 SharkBuilder* builder,
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58 ciTypeFlow* flow,
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59 const char* name)
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60 : SharkTargetInvariants(env, builder, flow) { initialize(name); }
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61
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62 private:
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63 void initialize(const char* name);
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64
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65 private:
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66 llvm::Function* _function;
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67 SharkTopLevelBlock** _blocks;
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68 GrowableArray<DeferredZeroCheck*> _deferred_zero_checks;
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69 SharkStack* _stack;
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70
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71 public:
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72 llvm::Function* function() const {
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73 return _function;
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74 }
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75 int block_count() const {
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76 return flow()->block_count();
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77 }
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78 SharkTopLevelBlock* block(int i) const {
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79 assert(i < block_count(), "should be");
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80 return _blocks[i];
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81 }
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82 GrowableArray<DeferredZeroCheck*>* deferred_zero_checks() {
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83 return &_deferred_zero_checks;
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84 }
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85 SharkStack* stack() const {
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86 return _stack;
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87 }
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88
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89 // On-stack replacement
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90 private:
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91 bool is_osr() const {
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92 return flow()->is_osr_flow();
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93 }
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94 const llvm::FunctionType* entry_point_type() const {
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95 if (is_osr())
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96 return SharkType::osr_entry_point_type();
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97 else
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98 return SharkType::entry_point_type();
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99 }
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100
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101 // Block management
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102 private:
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103 llvm::BasicBlock* _block_insertion_point;
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104
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105 void set_block_insertion_point(llvm::BasicBlock* block_insertion_point) {
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106 _block_insertion_point = block_insertion_point;
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107 }
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108 llvm::BasicBlock* block_insertion_point() const {
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109 return _block_insertion_point;
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110 }
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111
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112 public:
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113 llvm::BasicBlock* CreateBlock(const char* name = "") const {
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114 return llvm::BasicBlock::Create(
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115 SharkContext::current(), name, function(), block_insertion_point());
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116 }
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117
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118 // Deferred zero checks
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119 public:
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120 void add_deferred_zero_check(SharkTopLevelBlock* block,
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121 SharkValue* value);
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122
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123 private:
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124 void do_deferred_zero_checks();
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125 };
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1972
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126
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127 #endif // SHARE_VM_SHARK_SHARKFUNCTION_HPP
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