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1 /*
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2 * Copyright 1999-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 class BlockBegin;
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26 class CompilationResourceObj;
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27 class XHandlers;
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28 class ExceptionInfo;
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29 class DebugInformationRecorder;
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30 class FrameMap;
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31 class IR;
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32 class IRScope;
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33 class Instruction;
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34 class LinearScan;
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35 class OopMap;
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36 class LIR_Emitter;
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37 class LIR_Assembler;
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38 class CodeEmitInfo;
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39 class ciEnv;
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40 class ciMethod;
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41 class ValueStack;
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42 class LIR_OprDesc;
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43 class C1_MacroAssembler;
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44 class CFGPrinter;
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45 typedef LIR_OprDesc* LIR_Opr;
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46
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47
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48 define_array(BasicTypeArray, BasicType)
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49 define_stack(BasicTypeList, BasicTypeArray)
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50
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51 define_array(ExceptionInfoArray, ExceptionInfo*)
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52 define_stack(ExceptionInfoList, ExceptionInfoArray)
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53
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54 class Compilation: public StackObj {
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55 friend class CompilationResourceObj;
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56 private:
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57
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58 static Arena* _arena;
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59 static Arena* arena() { return _arena; }
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60
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61 static Compilation* _compilation;
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62
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63 private:
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64 // compilation specifics
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65 AbstractCompiler* _compiler;
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66 ciEnv* _env;
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67 ciMethod* _method;
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68 int _osr_bci;
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69 IR* _hir;
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70 int _max_spills;
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71 FrameMap* _frame_map;
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72 C1_MacroAssembler* _masm;
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73 bool _needs_debug_information;
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74 bool _has_exception_handlers;
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75 bool _has_fpu_code;
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76 bool _has_unsafe_access;
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77 const char* _bailout_msg;
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78 ExceptionInfoList* _exception_info_list;
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79 ExceptionHandlerTable _exception_handler_table;
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80 ImplicitExceptionTable _implicit_exception_table;
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81 LinearScan* _allocator;
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82 CodeOffsets _offsets;
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83 CodeBuffer _code;
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84
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85 // compilation helpers
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86 void initialize();
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87 void build_hir();
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88 void emit_lir();
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89
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90 void emit_code_epilog(LIR_Assembler* assembler);
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91 int emit_code_body();
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92
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93 int compile_java_method();
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94 void install_code(int frame_size);
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95 void compile_method();
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96
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97 void generate_exception_handler_table();
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98
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99 ExceptionInfoList* exception_info_list() const { return _exception_info_list; }
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100 ExceptionHandlerTable* exception_handler_table() { return &_exception_handler_table; }
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101
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102 LinearScan* allocator() { return _allocator; }
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103 void set_allocator(LinearScan* allocator) { _allocator = allocator; }
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104
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105 Instruction* _current_instruction; // the instruction currently being processed
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106 #ifndef PRODUCT
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107 Instruction* _last_instruction_printed; // the last instruction printed during traversal
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108 #endif // PRODUCT
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109
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110 public:
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111 // creation
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112 Compilation(AbstractCompiler* compiler, ciEnv* env, ciMethod* method, int osr_bci);
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113 ~Compilation();
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114
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115 static Compilation* current_compilation() { return _compilation; }
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116
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117 // accessors
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118 ciEnv* env() const { return _env; }
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119 AbstractCompiler* compiler() const { return _compiler; }
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120 bool needs_debug_information() const { return _needs_debug_information; }
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121 bool has_exception_handlers() const { return _has_exception_handlers; }
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122 bool has_fpu_code() const { return _has_fpu_code; }
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123 bool has_unsafe_access() const { return _has_unsafe_access; }
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124 ciMethod* method() const { return _method; }
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125 int osr_bci() const { return _osr_bci; }
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126 bool is_osr_compile() const { return osr_bci() >= 0; }
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127 IR* hir() const { return _hir; }
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128 int max_spills() const { return _max_spills; }
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129 FrameMap* frame_map() const { return _frame_map; }
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130 CodeBuffer* code() { return &_code; }
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131 C1_MacroAssembler* masm() const { return _masm; }
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132 CodeOffsets* offsets() { return &_offsets; }
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133
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134 // setters
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135 void set_needs_debug_information(bool f) { _needs_debug_information = f; }
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136 void set_has_exception_handlers(bool f) { _has_exception_handlers = f; }
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137 void set_has_fpu_code(bool f) { _has_fpu_code = f; }
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138 void set_has_unsafe_access(bool f) { _has_unsafe_access = f; }
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139 // Add a set of exception handlers covering the given PC offset
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140 void add_exception_handlers_for_pco(int pco, XHandlers* exception_handlers);
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141 // Statistics gathering
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142 void notice_inlined_method(ciMethod* method);
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143
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144 DebugInformationRecorder* debug_info_recorder() const; // = _env->debug_info();
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145 Dependencies* dependency_recorder() const; // = _env->dependencies()
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146 ImplicitExceptionTable* implicit_exception_table() { return &_implicit_exception_table; }
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147
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148 Instruction* current_instruction() const { return _current_instruction; }
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149 Instruction* set_current_instruction(Instruction* instr) {
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150 Instruction* previous = _current_instruction;
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151 _current_instruction = instr;
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152 return previous;
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153 }
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154
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155 #ifndef PRODUCT
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156 void maybe_print_current_instruction();
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157 #endif // PRODUCT
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158
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159 // error handling
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160 void bailout(const char* msg);
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161 bool bailed_out() const { return _bailout_msg != NULL; }
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162 const char* bailout_msg() const { return _bailout_msg; }
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163
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164 // timers
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165 static void print_timers();
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166
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167 #ifndef PRODUCT
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168 // debugging support.
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169 // produces a file named c1compileonly in the current directory with
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170 // directives to compile only the current method and it's inlines.
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171 // The file can be passed to the command line option -XX:Flags=<filename>
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172 void compile_only_this_method();
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173 void compile_only_this_scope(outputStream* st, IRScope* scope);
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174 void exclude_this_method();
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175 #endif // PRODUCT
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176 };
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177
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178
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179 // Macro definitions for unified bailout-support
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180 // The methods bailout() and bailed_out() are present in all classes
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181 // that might bailout, but forward all calls to Compilation
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182 #define BAILOUT(msg) { bailout(msg); return; }
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183 #define BAILOUT_(msg, res) { bailout(msg); return res; }
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184
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185 #define CHECK_BAILOUT() { if (bailed_out()) return; }
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186 #define CHECK_BAILOUT_(res) { if (bailed_out()) return res; }
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187
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188
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189 class InstructionMark: public StackObj {
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190 private:
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191 Compilation* _compilation;
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192 Instruction* _previous;
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193
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194 public:
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195 InstructionMark(Compilation* compilation, Instruction* instr) {
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196 _compilation = compilation;
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197 _previous = _compilation->set_current_instruction(instr);
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198 }
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199 ~InstructionMark() {
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200 _compilation->set_current_instruction(_previous);
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201 }
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202 };
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203
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204
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205 //----------------------------------------------------------------------
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206 // Base class for objects allocated by the compiler in the compilation arena
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207 class CompilationResourceObj ALLOCATION_SUPER_CLASS_SPEC {
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208 public:
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209 void* operator new(size_t size) { return Compilation::arena()->Amalloc(size); }
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210 void operator delete(void* p) {} // nothing to do
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211 };
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212
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213
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214 //----------------------------------------------------------------------
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215 // Class for aggregating exception handler information.
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216
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217 // Effectively extends XHandlers class with PC offset of
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218 // potentially exception-throwing instruction.
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219 // This class is used at the end of the compilation to build the
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220 // ExceptionHandlerTable.
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221 class ExceptionInfo: public CompilationResourceObj {
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222 private:
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223 int _pco; // PC of potentially exception-throwing instruction
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224 XHandlers* _exception_handlers; // flat list of exception handlers covering this PC
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225
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226 public:
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227 ExceptionInfo(int pco, XHandlers* exception_handlers)
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228 : _pco(pco)
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229 , _exception_handlers(exception_handlers)
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230 { }
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231
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232 int pco() { return _pco; }
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233 XHandlers* exception_handlers() { return _exception_handlers; }
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234 };
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