Wed, 31 Aug 2011 16:46:11 -0700
7083786: dead various dead chunks of code
Reviewed-by: iveresov, kvn
duke@435 | 1 | /* |
iveresov@2559 | 2 | * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #include "precompiled.hpp" |
stefank@2314 | 26 | #include "c1/c1_CFGPrinter.hpp" |
stefank@2314 | 27 | #include "c1/c1_Compilation.hpp" |
stefank@2314 | 28 | #include "c1/c1_IR.hpp" |
stefank@2314 | 29 | #include "c1/c1_LIRAssembler.hpp" |
stefank@2314 | 30 | #include "c1/c1_LinearScan.hpp" |
stefank@2314 | 31 | #include "c1/c1_MacroAssembler.hpp" |
stefank@2314 | 32 | #include "c1/c1_ValueMap.hpp" |
stefank@2314 | 33 | #include "c1/c1_ValueStack.hpp" |
stefank@2314 | 34 | #include "code/debugInfoRec.hpp" |
duke@435 | 35 | |
duke@435 | 36 | |
duke@435 | 37 | typedef enum { |
duke@435 | 38 | _t_compile, |
duke@435 | 39 | _t_setup, |
duke@435 | 40 | _t_optimizeIR, |
duke@435 | 41 | _t_buildIR, |
duke@435 | 42 | _t_emit_lir, |
duke@435 | 43 | _t_linearScan, |
duke@435 | 44 | _t_lirGeneration, |
duke@435 | 45 | _t_lir_schedule, |
duke@435 | 46 | _t_codeemit, |
duke@435 | 47 | _t_codeinstall, |
duke@435 | 48 | max_phase_timers |
duke@435 | 49 | } TimerName; |
duke@435 | 50 | |
duke@435 | 51 | static const char * timer_name[] = { |
duke@435 | 52 | "compile", |
duke@435 | 53 | "setup", |
duke@435 | 54 | "optimizeIR", |
duke@435 | 55 | "buildIR", |
duke@435 | 56 | "emit_lir", |
duke@435 | 57 | "linearScan", |
duke@435 | 58 | "lirGeneration", |
duke@435 | 59 | "lir_schedule", |
duke@435 | 60 | "codeemit", |
duke@435 | 61 | "codeinstall" |
duke@435 | 62 | }; |
duke@435 | 63 | |
duke@435 | 64 | static elapsedTimer timers[max_phase_timers]; |
duke@435 | 65 | static int totalInstructionNodes = 0; |
duke@435 | 66 | |
duke@435 | 67 | class PhaseTraceTime: public TraceTime { |
duke@435 | 68 | private: |
duke@435 | 69 | JavaThread* _thread; |
duke@435 | 70 | |
duke@435 | 71 | public: |
duke@435 | 72 | PhaseTraceTime(TimerName timer): |
duke@435 | 73 | TraceTime("", &timers[timer], CITime || CITimeEach, Verbose) { |
duke@435 | 74 | } |
duke@435 | 75 | }; |
duke@435 | 76 | |
duke@435 | 77 | // Implementation of Compilation |
duke@435 | 78 | |
duke@435 | 79 | |
duke@435 | 80 | #ifndef PRODUCT |
duke@435 | 81 | |
duke@435 | 82 | void Compilation::maybe_print_current_instruction() { |
duke@435 | 83 | if (_current_instruction != NULL && _last_instruction_printed != _current_instruction) { |
duke@435 | 84 | _last_instruction_printed = _current_instruction; |
duke@435 | 85 | _current_instruction->print_line(); |
duke@435 | 86 | } |
duke@435 | 87 | } |
duke@435 | 88 | #endif // PRODUCT |
duke@435 | 89 | |
duke@435 | 90 | |
duke@435 | 91 | DebugInformationRecorder* Compilation::debug_info_recorder() const { |
duke@435 | 92 | return _env->debug_info(); |
duke@435 | 93 | } |
duke@435 | 94 | |
duke@435 | 95 | |
duke@435 | 96 | Dependencies* Compilation::dependency_recorder() const { |
duke@435 | 97 | return _env->dependencies(); |
duke@435 | 98 | } |
duke@435 | 99 | |
duke@435 | 100 | |
duke@435 | 101 | void Compilation::initialize() { |
duke@435 | 102 | // Use an oop recorder bound to the CI environment. |
duke@435 | 103 | // (The default oop recorder is ignorant of the CI.) |
duke@435 | 104 | OopRecorder* ooprec = new OopRecorder(_env->arena()); |
duke@435 | 105 | _env->set_oop_recorder(ooprec); |
duke@435 | 106 | _env->set_debug_info(new DebugInformationRecorder(ooprec)); |
duke@435 | 107 | debug_info_recorder()->set_oopmaps(new OopMapSet()); |
duke@435 | 108 | _env->set_dependencies(new Dependencies(_env)); |
duke@435 | 109 | } |
duke@435 | 110 | |
duke@435 | 111 | |
duke@435 | 112 | void Compilation::build_hir() { |
duke@435 | 113 | CHECK_BAILOUT(); |
duke@435 | 114 | |
duke@435 | 115 | // setup ir |
duke@435 | 116 | _hir = new IR(this, method(), osr_bci()); |
duke@435 | 117 | if (!_hir->is_valid()) { |
duke@435 | 118 | bailout("invalid parsing"); |
duke@435 | 119 | return; |
duke@435 | 120 | } |
duke@435 | 121 | |
duke@435 | 122 | #ifndef PRODUCT |
duke@435 | 123 | if (PrintCFGToFile) { |
duke@435 | 124 | CFGPrinter::print_cfg(_hir, "After Generation of HIR", true, false); |
duke@435 | 125 | } |
duke@435 | 126 | #endif |
duke@435 | 127 | |
duke@435 | 128 | #ifndef PRODUCT |
duke@435 | 129 | if (PrintCFG || PrintCFG0) { tty->print_cr("CFG after parsing"); _hir->print(true); } |
duke@435 | 130 | if (PrintIR || PrintIR0 ) { tty->print_cr("IR after parsing"); _hir->print(false); } |
duke@435 | 131 | #endif |
duke@435 | 132 | |
duke@435 | 133 | _hir->verify(); |
duke@435 | 134 | |
duke@435 | 135 | if (UseC1Optimizations) { |
duke@435 | 136 | NEEDS_CLEANUP |
duke@435 | 137 | // optimization |
duke@435 | 138 | PhaseTraceTime timeit(_t_optimizeIR); |
duke@435 | 139 | |
duke@435 | 140 | _hir->optimize(); |
duke@435 | 141 | } |
duke@435 | 142 | |
duke@435 | 143 | _hir->verify(); |
duke@435 | 144 | |
duke@435 | 145 | _hir->split_critical_edges(); |
duke@435 | 146 | |
duke@435 | 147 | #ifndef PRODUCT |
duke@435 | 148 | if (PrintCFG || PrintCFG1) { tty->print_cr("CFG after optimizations"); _hir->print(true); } |
duke@435 | 149 | if (PrintIR || PrintIR1 ) { tty->print_cr("IR after optimizations"); _hir->print(false); } |
duke@435 | 150 | #endif |
duke@435 | 151 | |
duke@435 | 152 | _hir->verify(); |
duke@435 | 153 | |
duke@435 | 154 | // compute block ordering for code generation |
duke@435 | 155 | // the control flow must not be changed from here on |
duke@435 | 156 | _hir->compute_code(); |
duke@435 | 157 | |
duke@435 | 158 | if (UseGlobalValueNumbering) { |
duke@435 | 159 | ResourceMark rm; |
duke@435 | 160 | int instructions = Instruction::number_of_instructions(); |
duke@435 | 161 | GlobalValueNumbering gvn(_hir); |
duke@435 | 162 | assert(instructions == Instruction::number_of_instructions(), |
duke@435 | 163 | "shouldn't have created an instructions"); |
duke@435 | 164 | } |
duke@435 | 165 | |
duke@435 | 166 | // compute use counts after global value numbering |
duke@435 | 167 | _hir->compute_use_counts(); |
duke@435 | 168 | |
duke@435 | 169 | #ifndef PRODUCT |
duke@435 | 170 | if (PrintCFG || PrintCFG2) { tty->print_cr("CFG before code generation"); _hir->code()->print(true); } |
duke@435 | 171 | if (PrintIR || PrintIR2 ) { tty->print_cr("IR before code generation"); _hir->code()->print(false, true); } |
duke@435 | 172 | #endif |
duke@435 | 173 | |
duke@435 | 174 | _hir->verify(); |
duke@435 | 175 | } |
duke@435 | 176 | |
duke@435 | 177 | |
duke@435 | 178 | void Compilation::emit_lir() { |
duke@435 | 179 | CHECK_BAILOUT(); |
duke@435 | 180 | |
duke@435 | 181 | LIRGenerator gen(this, method()); |
duke@435 | 182 | { |
duke@435 | 183 | PhaseTraceTime timeit(_t_lirGeneration); |
duke@435 | 184 | hir()->iterate_linear_scan_order(&gen); |
duke@435 | 185 | } |
duke@435 | 186 | |
duke@435 | 187 | CHECK_BAILOUT(); |
duke@435 | 188 | |
duke@435 | 189 | { |
duke@435 | 190 | PhaseTraceTime timeit(_t_linearScan); |
duke@435 | 191 | |
duke@435 | 192 | LinearScan* allocator = new LinearScan(hir(), &gen, frame_map()); |
duke@435 | 193 | set_allocator(allocator); |
duke@435 | 194 | // Assign physical registers to LIR operands using a linear scan algorithm. |
duke@435 | 195 | allocator->do_linear_scan(); |
duke@435 | 196 | CHECK_BAILOUT(); |
duke@435 | 197 | |
duke@435 | 198 | _max_spills = allocator->max_spills(); |
duke@435 | 199 | } |
duke@435 | 200 | |
duke@435 | 201 | if (BailoutAfterLIR) { |
duke@435 | 202 | if (PrintLIR && !bailed_out()) { |
duke@435 | 203 | print_LIR(hir()->code()); |
duke@435 | 204 | } |
duke@435 | 205 | bailout("Bailing out because of -XX:+BailoutAfterLIR"); |
duke@435 | 206 | } |
duke@435 | 207 | } |
duke@435 | 208 | |
duke@435 | 209 | |
duke@435 | 210 | void Compilation::emit_code_epilog(LIR_Assembler* assembler) { |
duke@435 | 211 | CHECK_BAILOUT(); |
duke@435 | 212 | |
twisti@1639 | 213 | CodeOffsets* code_offsets = assembler->offsets(); |
twisti@1639 | 214 | |
duke@435 | 215 | // generate code or slow cases |
duke@435 | 216 | assembler->emit_slow_case_stubs(); |
duke@435 | 217 | CHECK_BAILOUT(); |
duke@435 | 218 | |
duke@435 | 219 | // generate exception adapters |
duke@435 | 220 | assembler->emit_exception_entries(exception_info_list()); |
duke@435 | 221 | CHECK_BAILOUT(); |
duke@435 | 222 | |
twisti@1639 | 223 | // Generate code for exception handler. |
twisti@1639 | 224 | code_offsets->set_value(CodeOffsets::Exceptions, assembler->emit_exception_handler()); |
duke@435 | 225 | CHECK_BAILOUT(); |
twisti@1639 | 226 | |
twisti@1639 | 227 | // Generate code for deopt handler. |
twisti@1639 | 228 | code_offsets->set_value(CodeOffsets::Deopt, assembler->emit_deopt_handler()); |
twisti@1639 | 229 | CHECK_BAILOUT(); |
twisti@1639 | 230 | |
twisti@2046 | 231 | // Emit the MethodHandle deopt handler code (if required). |
twisti@2046 | 232 | if (has_method_handle_invokes()) { |
twisti@2046 | 233 | // We can use the same code as for the normal deopt handler, we |
twisti@2046 | 234 | // just need a different entry point address. |
twisti@2046 | 235 | code_offsets->set_value(CodeOffsets::DeoptMH, assembler->emit_deopt_handler()); |
twisti@2046 | 236 | CHECK_BAILOUT(); |
twisti@2046 | 237 | } |
duke@435 | 238 | |
never@1813 | 239 | // Emit the handler to remove the activation from the stack and |
never@1813 | 240 | // dispatch to the caller. |
never@1813 | 241 | offsets()->set_value(CodeOffsets::UnwindHandler, assembler->emit_unwind_handler()); |
never@1813 | 242 | |
duke@435 | 243 | // done |
duke@435 | 244 | masm()->flush(); |
duke@435 | 245 | } |
duke@435 | 246 | |
duke@435 | 247 | |
bobv@2421 | 248 | bool Compilation::setup_code_buffer(CodeBuffer* code, int call_stub_estimate) { |
iveresov@1939 | 249 | // Preinitialize the consts section to some large size: |
iveresov@1939 | 250 | int locs_buffer_size = 20 * (relocInfo::length_limit + sizeof(relocInfo)); |
iveresov@1939 | 251 | char* locs_buffer = NEW_RESOURCE_ARRAY(char, locs_buffer_size); |
iveresov@1939 | 252 | code->insts()->initialize_shared_locs((relocInfo*)locs_buffer, |
iveresov@1939 | 253 | locs_buffer_size / sizeof(relocInfo)); |
iveresov@1939 | 254 | code->initialize_consts_size(Compilation::desired_max_constant_size()); |
iveresov@1972 | 255 | // Call stubs + two deopt handlers (regular and MH) + exception handler |
bobv@2421 | 256 | int stub_size = (call_stub_estimate * LIR_Assembler::call_stub_size) + |
bobv@2421 | 257 | LIR_Assembler::exception_handler_size + |
bobv@2421 | 258 | (2 * LIR_Assembler::deopt_handler_size); |
bobv@2421 | 259 | if (stub_size >= code->insts_capacity()) return false; |
bobv@2421 | 260 | code->initialize_stubs_size(stub_size); |
bobv@2421 | 261 | return true; |
iveresov@1939 | 262 | } |
iveresov@1939 | 263 | |
iveresov@1939 | 264 | |
duke@435 | 265 | int Compilation::emit_code_body() { |
duke@435 | 266 | // emit code |
bobv@2421 | 267 | if (!setup_code_buffer(code(), allocator()->num_calls())) { |
bobv@2421 | 268 | BAILOUT_("size requested greater than avail code buffer size", 0); |
bobv@2421 | 269 | } |
duke@435 | 270 | code()->initialize_oop_recorder(env()->oop_recorder()); |
duke@435 | 271 | |
duke@435 | 272 | _masm = new C1_MacroAssembler(code()); |
duke@435 | 273 | _masm->set_oop_recorder(env()->oop_recorder()); |
duke@435 | 274 | |
duke@435 | 275 | LIR_Assembler lir_asm(this); |
duke@435 | 276 | |
duke@435 | 277 | lir_asm.emit_code(hir()->code()); |
duke@435 | 278 | CHECK_BAILOUT_(0); |
duke@435 | 279 | |
duke@435 | 280 | emit_code_epilog(&lir_asm); |
duke@435 | 281 | CHECK_BAILOUT_(0); |
duke@435 | 282 | |
duke@435 | 283 | generate_exception_handler_table(); |
duke@435 | 284 | |
duke@435 | 285 | #ifndef PRODUCT |
duke@435 | 286 | if (PrintExceptionHandlers && Verbose) { |
duke@435 | 287 | exception_handler_table()->print(); |
duke@435 | 288 | } |
duke@435 | 289 | #endif /* PRODUCT */ |
duke@435 | 290 | |
duke@435 | 291 | return frame_map()->framesize(); |
duke@435 | 292 | } |
duke@435 | 293 | |
duke@435 | 294 | |
duke@435 | 295 | int Compilation::compile_java_method() { |
duke@435 | 296 | assert(!method()->is_native(), "should not reach here"); |
duke@435 | 297 | |
duke@435 | 298 | if (BailoutOnExceptionHandlers) { |
duke@435 | 299 | if (method()->has_exception_handlers()) { |
duke@435 | 300 | bailout("linear scan can't handle exception handlers"); |
duke@435 | 301 | } |
duke@435 | 302 | } |
duke@435 | 303 | |
duke@435 | 304 | CHECK_BAILOUT_(no_frame_size); |
duke@435 | 305 | |
iveresov@2349 | 306 | if (is_profiling() && !method()->ensure_method_data()) { |
iveresov@2349 | 307 | BAILOUT_("mdo allocation failed", no_frame_size); |
iveresov@2138 | 308 | } |
iveresov@2138 | 309 | |
duke@435 | 310 | { |
duke@435 | 311 | PhaseTraceTime timeit(_t_buildIR); |
iveresov@2138 | 312 | build_hir(); |
duke@435 | 313 | } |
duke@435 | 314 | if (BailoutAfterHIR) { |
duke@435 | 315 | BAILOUT_("Bailing out because of -XX:+BailoutAfterHIR", no_frame_size); |
duke@435 | 316 | } |
duke@435 | 317 | |
duke@435 | 318 | |
duke@435 | 319 | { |
duke@435 | 320 | PhaseTraceTime timeit(_t_emit_lir); |
duke@435 | 321 | |
duke@435 | 322 | _frame_map = new FrameMap(method(), hir()->number_of_locks(), MAX2(4, hir()->max_stack())); |
duke@435 | 323 | emit_lir(); |
duke@435 | 324 | } |
duke@435 | 325 | CHECK_BAILOUT_(no_frame_size); |
duke@435 | 326 | |
duke@435 | 327 | { |
duke@435 | 328 | PhaseTraceTime timeit(_t_codeemit); |
duke@435 | 329 | return emit_code_body(); |
duke@435 | 330 | } |
duke@435 | 331 | } |
duke@435 | 332 | |
duke@435 | 333 | void Compilation::install_code(int frame_size) { |
duke@435 | 334 | // frame_size is in 32-bit words so adjust it intptr_t words |
duke@435 | 335 | assert(frame_size == frame_map()->framesize(), "must match"); |
duke@435 | 336 | assert(in_bytes(frame_map()->framesize_in_bytes()) % sizeof(intptr_t) == 0, "must be at least pointer aligned"); |
duke@435 | 337 | _env->register_method( |
duke@435 | 338 | method(), |
duke@435 | 339 | osr_bci(), |
duke@435 | 340 | &_offsets, |
duke@435 | 341 | in_bytes(_frame_map->sp_offset_for_orig_pc()), |
duke@435 | 342 | code(), |
duke@435 | 343 | in_bytes(frame_map()->framesize_in_bytes()) / sizeof(intptr_t), |
duke@435 | 344 | debug_info_recorder()->_oopmaps, |
duke@435 | 345 | exception_handler_table(), |
duke@435 | 346 | implicit_exception_table(), |
duke@435 | 347 | compiler(), |
duke@435 | 348 | _env->comp_level(), |
duke@435 | 349 | has_unsafe_access() |
duke@435 | 350 | ); |
duke@435 | 351 | } |
duke@435 | 352 | |
duke@435 | 353 | |
duke@435 | 354 | void Compilation::compile_method() { |
duke@435 | 355 | // setup compilation |
duke@435 | 356 | initialize(); |
duke@435 | 357 | |
duke@435 | 358 | if (!method()->can_be_compiled()) { |
duke@435 | 359 | // Prevent race condition 6328518. |
duke@435 | 360 | // This can happen if the method is obsolete or breakpointed. |
duke@435 | 361 | bailout("Bailing out because method is not compilable"); |
duke@435 | 362 | return; |
duke@435 | 363 | } |
duke@435 | 364 | |
kvn@1215 | 365 | if (_env->jvmti_can_hotswap_or_post_breakpoint()) { |
duke@435 | 366 | // We can assert evol_method because method->can_be_compiled is true. |
duke@435 | 367 | dependency_recorder()->assert_evol_method(method()); |
duke@435 | 368 | } |
duke@435 | 369 | |
duke@435 | 370 | if (method()->break_at_execute()) { |
duke@435 | 371 | BREAKPOINT; |
duke@435 | 372 | } |
duke@435 | 373 | |
duke@435 | 374 | #ifndef PRODUCT |
duke@435 | 375 | if (PrintCFGToFile) { |
duke@435 | 376 | CFGPrinter::print_compilation(this); |
duke@435 | 377 | } |
duke@435 | 378 | #endif |
duke@435 | 379 | |
duke@435 | 380 | // compile method |
duke@435 | 381 | int frame_size = compile_java_method(); |
duke@435 | 382 | |
duke@435 | 383 | // bailout if method couldn't be compiled |
duke@435 | 384 | // Note: make sure we mark the method as not compilable! |
duke@435 | 385 | CHECK_BAILOUT(); |
duke@435 | 386 | |
duke@435 | 387 | if (InstallMethods) { |
duke@435 | 388 | // install code |
duke@435 | 389 | PhaseTraceTime timeit(_t_codeinstall); |
duke@435 | 390 | install_code(frame_size); |
duke@435 | 391 | } |
duke@435 | 392 | totalInstructionNodes += Instruction::number_of_instructions(); |
duke@435 | 393 | } |
duke@435 | 394 | |
duke@435 | 395 | |
duke@435 | 396 | void Compilation::generate_exception_handler_table() { |
duke@435 | 397 | // Generate an ExceptionHandlerTable from the exception handler |
duke@435 | 398 | // information accumulated during the compilation. |
duke@435 | 399 | ExceptionInfoList* info_list = exception_info_list(); |
duke@435 | 400 | |
duke@435 | 401 | if (info_list->length() == 0) { |
duke@435 | 402 | return; |
duke@435 | 403 | } |
duke@435 | 404 | |
duke@435 | 405 | // allocate some arrays for use by the collection code. |
duke@435 | 406 | const int num_handlers = 5; |
duke@435 | 407 | GrowableArray<intptr_t>* bcis = new GrowableArray<intptr_t>(num_handlers); |
duke@435 | 408 | GrowableArray<intptr_t>* scope_depths = new GrowableArray<intptr_t>(num_handlers); |
duke@435 | 409 | GrowableArray<intptr_t>* pcos = new GrowableArray<intptr_t>(num_handlers); |
duke@435 | 410 | |
duke@435 | 411 | for (int i = 0; i < info_list->length(); i++) { |
duke@435 | 412 | ExceptionInfo* info = info_list->at(i); |
duke@435 | 413 | XHandlers* handlers = info->exception_handlers(); |
duke@435 | 414 | |
duke@435 | 415 | // empty the arrays |
duke@435 | 416 | bcis->trunc_to(0); |
duke@435 | 417 | scope_depths->trunc_to(0); |
duke@435 | 418 | pcos->trunc_to(0); |
duke@435 | 419 | |
duke@435 | 420 | for (int i = 0; i < handlers->length(); i++) { |
duke@435 | 421 | XHandler* handler = handlers->handler_at(i); |
duke@435 | 422 | assert(handler->entry_pco() != -1, "must have been generated"); |
duke@435 | 423 | |
duke@435 | 424 | int e = bcis->find(handler->handler_bci()); |
duke@435 | 425 | if (e >= 0 && scope_depths->at(e) == handler->scope_count()) { |
duke@435 | 426 | // two different handlers are declared to dispatch to the same |
duke@435 | 427 | // catch bci. During parsing we created edges for each |
duke@435 | 428 | // handler but we really only need one. The exception handler |
duke@435 | 429 | // table will also get unhappy if we try to declare both since |
duke@435 | 430 | // it's nonsensical. Just skip this handler. |
duke@435 | 431 | continue; |
duke@435 | 432 | } |
duke@435 | 433 | |
duke@435 | 434 | bcis->append(handler->handler_bci()); |
duke@435 | 435 | if (handler->handler_bci() == -1) { |
duke@435 | 436 | // insert a wildcard handler at scope depth 0 so that the |
duke@435 | 437 | // exception lookup logic with find it. |
duke@435 | 438 | scope_depths->append(0); |
duke@435 | 439 | } else { |
duke@435 | 440 | scope_depths->append(handler->scope_count()); |
duke@435 | 441 | } |
duke@435 | 442 | pcos->append(handler->entry_pco()); |
duke@435 | 443 | |
duke@435 | 444 | // stop processing once we hit a catch any |
duke@435 | 445 | if (handler->is_catch_all()) { |
duke@435 | 446 | assert(i == handlers->length() - 1, "catch all must be last handler"); |
duke@435 | 447 | } |
duke@435 | 448 | } |
duke@435 | 449 | exception_handler_table()->add_subtable(info->pco(), bcis, scope_depths, pcos); |
duke@435 | 450 | } |
duke@435 | 451 | } |
duke@435 | 452 | |
duke@435 | 453 | |
iveresov@1939 | 454 | Compilation::Compilation(AbstractCompiler* compiler, ciEnv* env, ciMethod* method, |
iveresov@1939 | 455 | int osr_bci, BufferBlob* buffer_blob) |
duke@435 | 456 | : _compiler(compiler) |
duke@435 | 457 | , _env(env) |
duke@435 | 458 | , _method(method) |
duke@435 | 459 | , _osr_bci(osr_bci) |
duke@435 | 460 | , _hir(NULL) |
duke@435 | 461 | , _max_spills(-1) |
duke@435 | 462 | , _frame_map(NULL) |
duke@435 | 463 | , _masm(NULL) |
duke@435 | 464 | , _has_exception_handlers(false) |
duke@435 | 465 | , _has_fpu_code(true) // pessimistic assumption |
iveresov@2138 | 466 | , _would_profile(false) |
duke@435 | 467 | , _has_unsafe_access(false) |
twisti@2046 | 468 | , _has_method_handle_invokes(false) |
duke@435 | 469 | , _bailout_msg(NULL) |
duke@435 | 470 | , _exception_info_list(NULL) |
duke@435 | 471 | , _allocator(NULL) |
iveresov@1939 | 472 | , _next_id(0) |
iveresov@1939 | 473 | , _next_block_id(0) |
twisti@2103 | 474 | , _code(buffer_blob) |
duke@435 | 475 | , _current_instruction(NULL) |
duke@435 | 476 | #ifndef PRODUCT |
duke@435 | 477 | , _last_instruction_printed(NULL) |
duke@435 | 478 | #endif // PRODUCT |
duke@435 | 479 | { |
duke@435 | 480 | PhaseTraceTime timeit(_t_compile); |
duke@435 | 481 | _arena = Thread::current()->resource_area(); |
iveresov@1939 | 482 | _env->set_compiler_data(this); |
duke@435 | 483 | _exception_info_list = new ExceptionInfoList(); |
duke@435 | 484 | _implicit_exception_table.set_size(0); |
duke@435 | 485 | compile_method(); |
iveresov@2306 | 486 | if (bailed_out()) { |
iveresov@2306 | 487 | _env->record_method_not_compilable(bailout_msg(), !TieredCompilation); |
iveresov@2306 | 488 | if (is_profiling()) { |
iveresov@2306 | 489 | // Compilation failed, create MDO, which would signal the interpreter |
iveresov@2306 | 490 | // to start profiling on its own. |
iveresov@2349 | 491 | _method->ensure_method_data(); |
iveresov@2306 | 492 | } |
iveresov@2559 | 493 | } else if (is_profiling()) { |
iveresov@2349 | 494 | ciMethodData *md = method->method_data_or_null(); |
iveresov@2559 | 495 | if (md != NULL) { |
iveresov@2559 | 496 | md->set_would_profile(_would_profile); |
iveresov@2559 | 497 | } |
iveresov@2138 | 498 | } |
duke@435 | 499 | } |
duke@435 | 500 | |
duke@435 | 501 | Compilation::~Compilation() { |
iveresov@1939 | 502 | _env->set_compiler_data(NULL); |
duke@435 | 503 | } |
duke@435 | 504 | |
duke@435 | 505 | |
duke@435 | 506 | void Compilation::add_exception_handlers_for_pco(int pco, XHandlers* exception_handlers) { |
duke@435 | 507 | #ifndef PRODUCT |
duke@435 | 508 | if (PrintExceptionHandlers && Verbose) { |
duke@435 | 509 | tty->print_cr(" added exception scope for pco %d", pco); |
duke@435 | 510 | } |
duke@435 | 511 | #endif |
duke@435 | 512 | // Note: we do not have program counters for these exception handlers yet |
duke@435 | 513 | exception_info_list()->push(new ExceptionInfo(pco, exception_handlers)); |
duke@435 | 514 | } |
duke@435 | 515 | |
duke@435 | 516 | |
duke@435 | 517 | void Compilation::notice_inlined_method(ciMethod* method) { |
duke@435 | 518 | _env->notice_inlined_method(method); |
duke@435 | 519 | } |
duke@435 | 520 | |
duke@435 | 521 | |
duke@435 | 522 | void Compilation::bailout(const char* msg) { |
duke@435 | 523 | assert(msg != NULL, "bailout message must exist"); |
duke@435 | 524 | if (!bailed_out()) { |
duke@435 | 525 | // keep first bailout message |
duke@435 | 526 | if (PrintBailouts) tty->print_cr("compilation bailout: %s", msg); |
duke@435 | 527 | _bailout_msg = msg; |
duke@435 | 528 | } |
duke@435 | 529 | } |
duke@435 | 530 | |
duke@435 | 531 | |
duke@435 | 532 | void Compilation::print_timers() { |
duke@435 | 533 | // tty->print_cr(" Native methods : %6.3f s, Average : %2.3f", CompileBroker::_t_native_compilation.seconds(), CompileBroker::_t_native_compilation.seconds() / CompileBroker::_total_native_compile_count); |
duke@435 | 534 | float total = timers[_t_setup].seconds() + timers[_t_buildIR].seconds() + timers[_t_emit_lir].seconds() + timers[_t_lir_schedule].seconds() + timers[_t_codeemit].seconds() + timers[_t_codeinstall].seconds(); |
duke@435 | 535 | |
duke@435 | 536 | |
duke@435 | 537 | tty->print_cr(" Detailed C1 Timings"); |
duke@435 | 538 | tty->print_cr(" Setup time: %6.3f s (%4.1f%%)", timers[_t_setup].seconds(), (timers[_t_setup].seconds() / total) * 100.0); |
duke@435 | 539 | tty->print_cr(" Build IR: %6.3f s (%4.1f%%)", timers[_t_buildIR].seconds(), (timers[_t_buildIR].seconds() / total) * 100.0); |
duke@435 | 540 | tty->print_cr(" Optimize: %6.3f s (%4.1f%%)", timers[_t_optimizeIR].seconds(), (timers[_t_optimizeIR].seconds() / total) * 100.0); |
duke@435 | 541 | tty->print_cr(" Emit LIR: %6.3f s (%4.1f%%)", timers[_t_emit_lir].seconds(), (timers[_t_emit_lir].seconds() / total) * 100.0); |
duke@435 | 542 | tty->print_cr(" LIR Gen: %6.3f s (%4.1f%%)", timers[_t_lirGeneration].seconds(), (timers[_t_lirGeneration].seconds() / total) * 100.0); |
duke@435 | 543 | tty->print_cr(" Linear Scan: %6.3f s (%4.1f%%)", timers[_t_linearScan].seconds(), (timers[_t_linearScan].seconds() / total) * 100.0); |
duke@435 | 544 | NOT_PRODUCT(LinearScan::print_timers(timers[_t_linearScan].seconds())); |
duke@435 | 545 | tty->print_cr(" LIR Schedule: %6.3f s (%4.1f%%)", timers[_t_lir_schedule].seconds(), (timers[_t_lir_schedule].seconds() / total) * 100.0); |
duke@435 | 546 | tty->print_cr(" Code Emission: %6.3f s (%4.1f%%)", timers[_t_codeemit].seconds(), (timers[_t_codeemit].seconds() / total) * 100.0); |
duke@435 | 547 | tty->print_cr(" Code Installation: %6.3f s (%4.1f%%)", timers[_t_codeinstall].seconds(), (timers[_t_codeinstall].seconds() / total) * 100.0); |
duke@435 | 548 | tty->print_cr(" Instruction Nodes: %6d nodes", totalInstructionNodes); |
duke@435 | 549 | |
duke@435 | 550 | NOT_PRODUCT(LinearScan::print_statistics()); |
duke@435 | 551 | } |
duke@435 | 552 | |
duke@435 | 553 | |
duke@435 | 554 | #ifndef PRODUCT |
duke@435 | 555 | void Compilation::compile_only_this_method() { |
duke@435 | 556 | ResourceMark rm; |
duke@435 | 557 | fileStream stream(fopen("c1_compile_only", "wt")); |
duke@435 | 558 | stream.print_cr("# c1 compile only directives"); |
duke@435 | 559 | compile_only_this_scope(&stream, hir()->top_scope()); |
duke@435 | 560 | } |
duke@435 | 561 | |
duke@435 | 562 | |
duke@435 | 563 | void Compilation::compile_only_this_scope(outputStream* st, IRScope* scope) { |
duke@435 | 564 | st->print("CompileOnly="); |
duke@435 | 565 | scope->method()->holder()->name()->print_symbol_on(st); |
duke@435 | 566 | st->print("."); |
duke@435 | 567 | scope->method()->name()->print_symbol_on(st); |
duke@435 | 568 | st->cr(); |
duke@435 | 569 | } |
duke@435 | 570 | |
duke@435 | 571 | |
duke@435 | 572 | void Compilation::exclude_this_method() { |
duke@435 | 573 | fileStream stream(fopen(".hotspot_compiler", "at")); |
duke@435 | 574 | stream.print("exclude "); |
duke@435 | 575 | method()->holder()->name()->print_symbol_on(&stream); |
duke@435 | 576 | stream.print(" "); |
duke@435 | 577 | method()->name()->print_symbol_on(&stream); |
duke@435 | 578 | stream.cr(); |
duke@435 | 579 | stream.cr(); |
duke@435 | 580 | } |
duke@435 | 581 | #endif |