Mercurial > hg > graal-jvmci-8
annotate src/share/vm/c1/c1_Compilation.hpp @ 1899:42a10fc37986
6991577: add IfOp optimization to C1
Summary: Ifop optimization for c1
Reviewed-by: never, phh, iveresov
| author | roland |
|---|---|
| date | Fri, 15 Oct 2010 09:38:20 +0200 |
| parents | f02a8bbe6ed4 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 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. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 class CompilationResourceObj; | |
| 26 class XHandlers; | |
| 27 class ExceptionInfo; | |
| 28 class DebugInformationRecorder; | |
| 29 class FrameMap; | |
| 30 class IR; | |
| 31 class IRScope; | |
| 32 class Instruction; | |
| 33 class LinearScan; | |
| 34 class OopMap; | |
| 35 class LIR_Emitter; | |
| 36 class LIR_Assembler; | |
| 37 class CodeEmitInfo; | |
| 38 class ciEnv; | |
| 39 class ciMethod; | |
| 40 class ValueStack; | |
| 41 class LIR_OprDesc; | |
| 42 class C1_MacroAssembler; | |
| 43 class CFGPrinter; | |
| 44 typedef LIR_OprDesc* LIR_Opr; | |
| 45 | |
| 46 | |
| 47 define_array(BasicTypeArray, BasicType) | |
| 48 define_stack(BasicTypeList, BasicTypeArray) | |
| 49 | |
| 50 define_array(ExceptionInfoArray, ExceptionInfo*) | |
| 51 define_stack(ExceptionInfoList, ExceptionInfoArray) | |
| 52 | |
| 53 class Compilation: public StackObj { | |
| 54 friend class CompilationResourceObj; | |
| 55 private: | |
| 56 // compilation specifics | |
| 1584 | 57 Arena* _arena; |
| 58 int _next_id; | |
| 59 int _next_block_id; | |
| 0 | 60 AbstractCompiler* _compiler; |
| 61 ciEnv* _env; | |
| 62 ciMethod* _method; | |
| 63 int _osr_bci; | |
| 64 IR* _hir; | |
| 65 int _max_spills; | |
| 66 FrameMap* _frame_map; | |
| 67 C1_MacroAssembler* _masm; | |
| 68 bool _has_exception_handlers; | |
| 69 bool _has_fpu_code; | |
| 70 bool _has_unsafe_access; | |
| 1783 | 71 bool _would_profile; |
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72 bool _has_method_handle_invokes; // True if this method has MethodHandle invokes. |
| 0 | 73 const char* _bailout_msg; |
| 74 ExceptionInfoList* _exception_info_list; | |
| 75 ExceptionHandlerTable _exception_handler_table; | |
| 76 ImplicitExceptionTable _implicit_exception_table; | |
| 77 LinearScan* _allocator; | |
| 78 CodeOffsets _offsets; | |
| 79 CodeBuffer _code; | |
| 80 | |
| 81 // compilation helpers | |
| 82 void initialize(); | |
| 83 void build_hir(); | |
| 84 void emit_lir(); | |
| 85 | |
| 86 void emit_code_epilog(LIR_Assembler* assembler); | |
| 87 int emit_code_body(); | |
| 88 | |
| 89 int compile_java_method(); | |
| 90 void install_code(int frame_size); | |
| 91 void compile_method(); | |
| 92 | |
| 93 void generate_exception_handler_table(); | |
| 94 | |
| 95 ExceptionInfoList* exception_info_list() const { return _exception_info_list; } | |
| 96 ExceptionHandlerTable* exception_handler_table() { return &_exception_handler_table; } | |
| 97 | |
| 98 LinearScan* allocator() { return _allocator; } | |
| 99 void set_allocator(LinearScan* allocator) { _allocator = allocator; } | |
| 100 | |
| 101 Instruction* _current_instruction; // the instruction currently being processed | |
| 102 #ifndef PRODUCT | |
| 103 Instruction* _last_instruction_printed; // the last instruction printed during traversal | |
| 104 #endif // PRODUCT | |
| 105 | |
| 106 public: | |
| 107 // creation | |
| 1584 | 108 Compilation(AbstractCompiler* compiler, ciEnv* env, ciMethod* method, |
| 109 int osr_bci, BufferBlob* buffer_blob); | |
| 0 | 110 ~Compilation(); |
| 111 | |
| 1584 | 112 |
| 113 static Compilation* current() { | |
| 114 return (Compilation*) ciEnv::current()->compiler_data(); | |
| 115 } | |
| 0 | 116 |
| 117 // accessors | |
| 118 ciEnv* env() const { return _env; } | |
| 119 AbstractCompiler* compiler() const { return _compiler; } | |
| 120 bool has_exception_handlers() const { return _has_exception_handlers; } | |
| 121 bool has_fpu_code() const { return _has_fpu_code; } | |
| 122 bool has_unsafe_access() const { return _has_unsafe_access; } | |
| 123 ciMethod* method() const { return _method; } | |
| 124 int osr_bci() const { return _osr_bci; } | |
| 125 bool is_osr_compile() const { return osr_bci() >= 0; } | |
| 126 IR* hir() const { return _hir; } | |
| 127 int max_spills() const { return _max_spills; } | |
| 128 FrameMap* frame_map() const { return _frame_map; } | |
| 129 CodeBuffer* code() { return &_code; } | |
| 130 C1_MacroAssembler* masm() const { return _masm; } | |
| 131 CodeOffsets* offsets() { return &_offsets; } | |
| 1584 | 132 Arena* arena() { return _arena; } |
| 133 | |
| 134 // Instruction ids | |
| 135 int get_next_id() { return _next_id++; } | |
| 136 int number_of_instructions() const { return _next_id; } | |
| 137 | |
| 138 // BlockBegin ids | |
| 139 int get_next_block_id() { return _next_block_id++; } | |
| 140 int number_of_blocks() const { return _next_block_id; } | |
| 0 | 141 |
| 142 // setters | |
| 143 void set_has_exception_handlers(bool f) { _has_exception_handlers = f; } | |
| 144 void set_has_fpu_code(bool f) { _has_fpu_code = f; } | |
| 145 void set_has_unsafe_access(bool f) { _has_unsafe_access = f; } | |
| 1783 | 146 void set_would_profile(bool f) { _would_profile = f; } |
| 0 | 147 // Add a set of exception handlers covering the given PC offset |
| 148 void add_exception_handlers_for_pco(int pco, XHandlers* exception_handlers); | |
| 149 // Statistics gathering | |
| 150 void notice_inlined_method(ciMethod* method); | |
| 151 | |
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152 // JSR 292 |
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153 bool has_method_handle_invokes() const { return _has_method_handle_invokes; } |
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154 void set_has_method_handle_invokes(bool z) { _has_method_handle_invokes = z; } |
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155 |
| 0 | 156 DebugInformationRecorder* debug_info_recorder() const; // = _env->debug_info(); |
| 157 Dependencies* dependency_recorder() const; // = _env->dependencies() | |
| 158 ImplicitExceptionTable* implicit_exception_table() { return &_implicit_exception_table; } | |
| 159 | |
| 160 Instruction* current_instruction() const { return _current_instruction; } | |
| 161 Instruction* set_current_instruction(Instruction* instr) { | |
| 162 Instruction* previous = _current_instruction; | |
| 163 _current_instruction = instr; | |
| 164 return previous; | |
| 165 } | |
| 166 | |
| 167 #ifndef PRODUCT | |
| 168 void maybe_print_current_instruction(); | |
| 169 #endif // PRODUCT | |
| 170 | |
| 171 // error handling | |
| 172 void bailout(const char* msg); | |
| 173 bool bailed_out() const { return _bailout_msg != NULL; } | |
| 174 const char* bailout_msg() const { return _bailout_msg; } | |
| 175 | |
| 1584 | 176 static int desired_max_code_buffer_size() { |
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177 #ifndef PPC |
| 1584 | 178 return (int) NMethodSizeLimit; // default 256K or 512K |
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179 #else |
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180 // conditional branches on PPC are restricted to 16 bit signed |
| 1899 | 181 return MIN2((unsigned int)NMethodSizeLimit,32*K); |
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182 #endif |
| 1584 | 183 } |
| 184 static int desired_max_constant_size() { | |
| 1899 | 185 return desired_max_code_buffer_size() / 10; |
| 1584 | 186 } |
| 187 | |
| 188 static void setup_code_buffer(CodeBuffer* cb, int call_stub_estimate); | |
| 189 | |
| 0 | 190 // timers |
| 191 static void print_timers(); | |
| 192 | |
| 193 #ifndef PRODUCT | |
| 194 // debugging support. | |
| 195 // produces a file named c1compileonly in the current directory with | |
| 196 // directives to compile only the current method and it's inlines. | |
| 197 // The file can be passed to the command line option -XX:Flags=<filename> | |
| 198 void compile_only_this_method(); | |
| 199 void compile_only_this_scope(outputStream* st, IRScope* scope); | |
| 200 void exclude_this_method(); | |
| 201 #endif // PRODUCT | |
| 1783 | 202 |
| 203 bool is_profiling() { | |
| 204 return env()->comp_level() == CompLevel_full_profile || | |
| 205 env()->comp_level() == CompLevel_limited_profile; | |
| 206 } | |
| 207 bool count_invocations() { return is_profiling(); } | |
| 208 bool count_backedges() { return is_profiling(); } | |
| 209 | |
| 210 // Helpers for generation of profile information | |
| 211 bool profile_branches() { | |
| 212 return env()->comp_level() == CompLevel_full_profile && | |
| 213 C1UpdateMethodData && C1ProfileBranches; | |
| 214 } | |
| 215 bool profile_calls() { | |
| 216 return env()->comp_level() == CompLevel_full_profile && | |
| 217 C1UpdateMethodData && C1ProfileCalls; | |
| 218 } | |
| 219 bool profile_inlined_calls() { | |
| 220 return profile_calls() && C1ProfileInlinedCalls; | |
| 221 } | |
| 222 bool profile_checkcasts() { | |
| 223 return env()->comp_level() == CompLevel_full_profile && | |
| 224 C1UpdateMethodData && C1ProfileCheckcasts; | |
| 225 } | |
| 0 | 226 }; |
| 227 | |
| 228 | |
| 229 // Macro definitions for unified bailout-support | |
| 230 // The methods bailout() and bailed_out() are present in all classes | |
| 231 // that might bailout, but forward all calls to Compilation | |
| 232 #define BAILOUT(msg) { bailout(msg); return; } | |
| 233 #define BAILOUT_(msg, res) { bailout(msg); return res; } | |
| 234 | |
| 235 #define CHECK_BAILOUT() { if (bailed_out()) return; } | |
| 236 #define CHECK_BAILOUT_(res) { if (bailed_out()) return res; } | |
| 237 | |
| 238 | |
| 239 class InstructionMark: public StackObj { | |
| 240 private: | |
| 241 Compilation* _compilation; | |
| 242 Instruction* _previous; | |
| 243 | |
| 244 public: | |
| 245 InstructionMark(Compilation* compilation, Instruction* instr) { | |
| 246 _compilation = compilation; | |
| 247 _previous = _compilation->set_current_instruction(instr); | |
| 248 } | |
| 249 ~InstructionMark() { | |
| 250 _compilation->set_current_instruction(_previous); | |
| 251 } | |
| 252 }; | |
| 253 | |
| 254 | |
| 255 //---------------------------------------------------------------------- | |
| 256 // Base class for objects allocated by the compiler in the compilation arena | |
| 257 class CompilationResourceObj ALLOCATION_SUPER_CLASS_SPEC { | |
| 258 public: | |
| 1584 | 259 void* operator new(size_t size) { return Compilation::current()->arena()->Amalloc(size); } |
| 260 void* operator new(size_t size, Arena* arena) { | |
| 261 return arena->Amalloc(size); | |
| 262 } | |
| 0 | 263 void operator delete(void* p) {} // nothing to do |
| 264 }; | |
| 265 | |
| 266 | |
| 267 //---------------------------------------------------------------------- | |
| 268 // Class for aggregating exception handler information. | |
| 269 | |
| 270 // Effectively extends XHandlers class with PC offset of | |
| 271 // potentially exception-throwing instruction. | |
| 272 // This class is used at the end of the compilation to build the | |
| 273 // ExceptionHandlerTable. | |
| 274 class ExceptionInfo: public CompilationResourceObj { | |
| 275 private: | |
| 276 int _pco; // PC of potentially exception-throwing instruction | |
| 277 XHandlers* _exception_handlers; // flat list of exception handlers covering this PC | |
| 278 | |
| 279 public: | |
| 280 ExceptionInfo(int pco, XHandlers* exception_handlers) | |
| 281 : _pco(pco) | |
| 282 , _exception_handlers(exception_handlers) | |
| 283 { } | |
| 284 | |
| 285 int pco() { return _pco; } | |
| 286 XHandlers* exception_handlers() { return _exception_handlers; } | |
| 287 }; |