1 /* 2 * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved. 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 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "opto/c2compiler.hpp" 27 #include "opto/compile.hpp" 28 #include "opto/optoreg.hpp" 29 #include "opto/output.hpp" 30 #include "opto/runtime.hpp" 31 32 // register information defined by ADLC 33 extern const char register_save_policy[]; 34 extern const int register_save_type[]; 35 36 const char* C2Compiler::retry_no_subsuming_loads() { 37 return "retry without subsuming loads"; 38 } 39 const char* C2Compiler::retry_no_escape_analysis() { 40 return "retry without escape analysis"; 41 } 42 const char* C2Compiler::retry_class_loading_during_parsing() { 43 return "retry class loading during parsing"; 44 } 45 bool C2Compiler::init_c2_runtime() { 46 47 // Check assumptions used while running ADLC 48 Compile::adlc_verification(); 49 assert(REG_COUNT <= ConcreteRegisterImpl::number_of_registers, "incompatible register counts"); 50 51 for (int i = 0; i < ConcreteRegisterImpl::number_of_registers ; i++ ) { 52 OptoReg::vm2opto[i] = OptoReg::Bad; 53 } 54 55 for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(REG_COUNT); i = OptoReg::add(i,1) ) { 56 VMReg r = OptoReg::as_VMReg(i); 57 if (r->is_valid()) { 58 OptoReg::vm2opto[r->value()] = i; 59 } 60 } 61 62 // Check that runtime and architecture description agree on callee-saved-floats 63 bool callee_saved_floats = false; 64 for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(_last_Mach_Reg); i = OptoReg::add(i,1) ) { 65 // Is there a callee-saved float or double? 66 if( register_save_policy[i] == 'E' /* callee-saved */ && 67 (register_save_type[i] == Op_RegF || register_save_type[i] == Op_RegD) ) { 68 callee_saved_floats = true; 69 } 70 } 71 72 DEBUG_ONLY( Node::init_NodeProperty(); ) 73 74 Compile::pd_compiler2_init(); 75 76 CompilerThread* thread = CompilerThread::current(); 77 78 HandleMark handle_mark(thread); 79 return OptoRuntime::generate(thread->env()); 80 } 81 82 void C2Compiler::initialize() { 83 // The first compiler thread that gets here will initialize the 84 // small amount of global state (and runtime stubs) that C2 needs. 85 86 // There is a race possible once at startup and then we're fine 87 88 // Note that this is being called from a compiler thread not the 89 // main startup thread. 90 if (should_perform_init()) { 91 bool successful = C2Compiler::init_c2_runtime(); 92 int new_state = (successful) ? initialized : failed; 93 set_state(new_state); 94 } 95 } 96 97 void C2Compiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci) { 98 assert(is_initialized(), "Compiler thread must be initialized"); 99 100 bool subsume_loads = SubsumeLoads; 101 bool do_escape_analysis = DoEscapeAnalysis && !env->should_retain_local_variables(); 102 bool eliminate_boxing = EliminateAutoBox; 103 while (!env->failing()) { 104 // Attempt to compile while subsuming loads into machine instructions. 105 Compile C(env, this, target, entry_bci, subsume_loads, do_escape_analysis, eliminate_boxing); 106 107 // Check result and retry if appropriate. 108 if (C.failure_reason() != NULL) { 109 if (C.failure_reason_is(retry_class_loading_during_parsing())) { 110 env->report_failure(C.failure_reason()); 111 continue; // retry 112 } 113 if (C.failure_reason_is(retry_no_subsuming_loads())) { 114 assert(subsume_loads, "must make progress"); 115 subsume_loads = false; 116 env->report_failure(C.failure_reason()); 117 continue; // retry 118 } 119 if (C.failure_reason_is(retry_no_escape_analysis())) { 120 assert(do_escape_analysis, "must make progress"); 121 do_escape_analysis = false; 122 env->report_failure(C.failure_reason()); 123 continue; // retry 124 } 125 if (C.has_boxed_value()) { 126 // Recompile without boxing elimination regardless failure reason. 127 assert(eliminate_boxing, "must make progress"); 128 eliminate_boxing = false; 129 env->report_failure(C.failure_reason()); 130 continue; // retry 131 } 132 // Pass any other failure reason up to the ciEnv. 133 // Note that serious, irreversible failures are already logged 134 // on the ciEnv via env->record_method_not_compilable(). 135 env->record_failure(C.failure_reason()); 136 } 137 if (StressRecompilation) { 138 if (subsume_loads) { 139 subsume_loads = false; 140 continue; // retry 141 } 142 if (do_escape_analysis) { 143 do_escape_analysis = false; 144 continue; // retry 145 } 146 } 147 148 // print inlining for last compilation only 149 C.dump_print_inlining(); 150 151 // No retry; just break the loop. 152 break; 153 } 154 } 155 156 void C2Compiler::print_timers() { 157 Compile::print_timers(); 158 } 159 160 bool C2Compiler::is_intrinsic_supported(methodHandle method, bool is_virtual) { 161 vmIntrinsics::ID id = method->intrinsic_id(); 162 assert(id != vmIntrinsics::_none, "must be a VM intrinsic"); 163 164 if (id < vmIntrinsics::FIRST_ID || id > vmIntrinsics::LAST_COMPILER_INLINE) { 165 return false; 166 } 167 168 // Only Object.hashCode and Object.clone intrinsics implement also a virtual 169 // dispatch because calling both methods is expensive but both methods are 170 // frequently overridden. All other intrinsics implement only a non-virtual 171 // dispatch. 172 if (is_virtual) { 173 switch (id) { 174 case vmIntrinsics::_hashCode: 175 case vmIntrinsics::_clone: 176 break; 177 default: 178 return false; 179 } 180 } 181 182 switch (id) { 183 case vmIntrinsics::_compareTo: 184 if (!Matcher::match_rule_supported(Op_StrComp)) return false; 185 break; 186 case vmIntrinsics::_equals: 187 if (!Matcher::match_rule_supported(Op_StrEquals)) return false; 188 break; 189 case vmIntrinsics::_equalsC: 190 if (!Matcher::match_rule_supported(Op_AryEq)) return false; 191 break; 192 case vmIntrinsics::_copyMemory: 193 if (StubRoutines::unsafe_arraycopy() == NULL) return false; 194 break; 195 case vmIntrinsics::_encodeISOArray: 196 if (!Matcher::match_rule_supported(Op_EncodeISOArray)) return false; 197 break; 198 case vmIntrinsics::_bitCount_i: 199 if (!Matcher::match_rule_supported(Op_PopCountI)) return false; 200 break; 201 case vmIntrinsics::_bitCount_l: 202 if (!Matcher::match_rule_supported(Op_PopCountL)) return false; 203 break; 204 case vmIntrinsics::_numberOfLeadingZeros_i: 205 if (!Matcher::match_rule_supported(Op_CountLeadingZerosI)) return false; 206 break; 207 case vmIntrinsics::_numberOfLeadingZeros_l: 208 if (!Matcher::match_rule_supported(Op_CountLeadingZerosL)) return false; 209 break; 210 case vmIntrinsics::_numberOfTrailingZeros_i: 211 if (!Matcher::match_rule_supported(Op_CountTrailingZerosI)) return false; 212 break; 213 case vmIntrinsics::_numberOfTrailingZeros_l: 214 if (!Matcher::match_rule_supported(Op_CountTrailingZerosL)) return false; 215 break; 216 case vmIntrinsics::_reverseBytes_c: 217 if (!Matcher::match_rule_supported(Op_ReverseBytesUS)) return false; 218 break; 219 case vmIntrinsics::_reverseBytes_s: 220 if (!Matcher::match_rule_supported(Op_ReverseBytesS)) return false; 221 break; 222 case vmIntrinsics::_reverseBytes_i: 223 if (!Matcher::match_rule_supported(Op_ReverseBytesI)) return false; 224 break; 225 case vmIntrinsics::_reverseBytes_l: 226 if (!Matcher::match_rule_supported(Op_ReverseBytesL)) return false; 227 break; 228 case vmIntrinsics::_compareAndSwapObject: 229 #ifdef _LP64 230 if (!UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndSwapP)) return false; 231 #endif 232 break; 233 case vmIntrinsics::_compareAndSwapLong: 234 if (!Matcher::match_rule_supported(Op_CompareAndSwapL)) return false; 235 break; 236 case vmIntrinsics::_getAndAddInt: 237 if (!Matcher::match_rule_supported(Op_GetAndAddI)) return false; 238 break; 239 case vmIntrinsics::_getAndAddLong: 240 if (!Matcher::match_rule_supported(Op_GetAndAddL)) return false; 241 break; 242 case vmIntrinsics::_getAndSetInt: 243 if (!Matcher::match_rule_supported(Op_GetAndSetI)) return false; 244 break; 245 case vmIntrinsics::_getAndSetLong: 246 if (!Matcher::match_rule_supported(Op_GetAndSetL)) return false; 247 break; 248 case vmIntrinsics::_getAndSetObject: 249 #ifdef _LP64 250 if (!UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetP)) return false; 251 if (UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetN)) return false; 252 break; 253 #else 254 if (!Matcher::match_rule_supported(Op_GetAndSetP)) return false; 255 break; 256 #endif 257 case vmIntrinsics::_incrementExactI: 258 case vmIntrinsics::_addExactI: 259 if (!Matcher::match_rule_supported(Op_OverflowAddI)) return false; 260 break; 261 case vmIntrinsics::_incrementExactL: 262 case vmIntrinsics::_addExactL: 263 if (!Matcher::match_rule_supported(Op_OverflowAddL)) return false; 264 break; 265 case vmIntrinsics::_decrementExactI: 266 case vmIntrinsics::_subtractExactI: 267 if (!Matcher::match_rule_supported(Op_OverflowSubI)) return false; 268 break; 269 case vmIntrinsics::_decrementExactL: 270 case vmIntrinsics::_subtractExactL: 271 if (!Matcher::match_rule_supported(Op_OverflowSubL)) return false; 272 break; 273 case vmIntrinsics::_negateExactI: 274 if (!Matcher::match_rule_supported(Op_OverflowSubI)) return false; 275 break; 276 case vmIntrinsics::_negateExactL: 277 if (!Matcher::match_rule_supported(Op_OverflowSubL)) return false; 278 break; 279 case vmIntrinsics::_multiplyExactI: 280 if (!Matcher::match_rule_supported(Op_OverflowMulI)) return false; 281 break; 282 case vmIntrinsics::_multiplyExactL: 283 if (!Matcher::match_rule_supported(Op_OverflowMulL)) return false; 284 break; 285 case vmIntrinsics::_getCallerClass: 286 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL) return false; 287 break; 288 case vmIntrinsics::_hashCode: 289 case vmIntrinsics::_identityHashCode: 290 case vmIntrinsics::_getClass: 291 case vmIntrinsics::_dsin: 292 case vmIntrinsics::_dcos: 293 case vmIntrinsics::_dtan: 294 case vmIntrinsics::_dabs: 295 case vmIntrinsics::_datan2: 296 case vmIntrinsics::_dsqrt: 297 case vmIntrinsics::_dexp: 298 case vmIntrinsics::_dlog: 299 case vmIntrinsics::_dlog10: 300 case vmIntrinsics::_dpow: 301 case vmIntrinsics::_min: 302 case vmIntrinsics::_max: 303 case vmIntrinsics::_arraycopy: 304 case vmIntrinsics::_indexOf: 305 case vmIntrinsics::_getObject: 306 case vmIntrinsics::_getBoolean: 307 case vmIntrinsics::_getByte: 308 case vmIntrinsics::_getShort: 309 case vmIntrinsics::_getChar: 310 case vmIntrinsics::_getInt: 311 case vmIntrinsics::_getLong: 312 case vmIntrinsics::_getFloat: 313 case vmIntrinsics::_getDouble: 314 case vmIntrinsics::_putObject: 315 case vmIntrinsics::_putBoolean: 316 case vmIntrinsics::_putByte: 317 case vmIntrinsics::_putShort: 318 case vmIntrinsics::_putChar: 319 case vmIntrinsics::_putInt: 320 case vmIntrinsics::_putLong: 321 case vmIntrinsics::_putFloat: 322 case vmIntrinsics::_putDouble: 323 case vmIntrinsics::_getByte_raw: 324 case vmIntrinsics::_getShort_raw: 325 case vmIntrinsics::_getChar_raw: 326 case vmIntrinsics::_getInt_raw: 327 case vmIntrinsics::_getLong_raw: 328 case vmIntrinsics::_getFloat_raw: 329 case vmIntrinsics::_getDouble_raw: 330 case vmIntrinsics::_getAddress_raw: 331 case vmIntrinsics::_putByte_raw: 332 case vmIntrinsics::_putShort_raw: 333 case vmIntrinsics::_putChar_raw: 334 case vmIntrinsics::_putInt_raw: 335 case vmIntrinsics::_putLong_raw: 336 case vmIntrinsics::_putFloat_raw: 337 case vmIntrinsics::_putDouble_raw: 338 case vmIntrinsics::_putAddress_raw: 339 case vmIntrinsics::_getObjectVolatile: 340 case vmIntrinsics::_getBooleanVolatile: 341 case vmIntrinsics::_getByteVolatile: 342 case vmIntrinsics::_getShortVolatile: 343 case vmIntrinsics::_getCharVolatile: 344 case vmIntrinsics::_getIntVolatile: 345 case vmIntrinsics::_getLongVolatile: 346 case vmIntrinsics::_getFloatVolatile: 347 case vmIntrinsics::_getDoubleVolatile: 348 case vmIntrinsics::_putObjectVolatile: 349 case vmIntrinsics::_putBooleanVolatile: 350 case vmIntrinsics::_putByteVolatile: 351 case vmIntrinsics::_putShortVolatile: 352 case vmIntrinsics::_putCharVolatile: 353 case vmIntrinsics::_putIntVolatile: 354 case vmIntrinsics::_putLongVolatile: 355 case vmIntrinsics::_putFloatVolatile: 356 case vmIntrinsics::_putDoubleVolatile: 357 case vmIntrinsics::_getShortUnaligned: 358 case vmIntrinsics::_getCharUnaligned: 359 case vmIntrinsics::_getIntUnaligned: 360 case vmIntrinsics::_getLongUnaligned: 361 case vmIntrinsics::_putShortUnaligned: 362 case vmIntrinsics::_putCharUnaligned: 363 case vmIntrinsics::_putIntUnaligned: 364 case vmIntrinsics::_putLongUnaligned: 365 case vmIntrinsics::_compareAndSwapInt: 366 case vmIntrinsics::_putOrderedObject: 367 case vmIntrinsics::_putOrderedInt: 368 case vmIntrinsics::_putOrderedLong: 369 case vmIntrinsics::_loadFence: 370 case vmIntrinsics::_storeFence: 371 case vmIntrinsics::_fullFence: 372 case vmIntrinsics::_currentThread: 373 case vmIntrinsics::_isInterrupted: 374 #ifdef TRACE_HAVE_INTRINSICS 375 case vmIntrinsics::_classID: 376 case vmIntrinsics::_threadID: 377 case vmIntrinsics::_counterTime: 378 #endif 379 case vmIntrinsics::_currentTimeMillis: 380 case vmIntrinsics::_nanoTime: 381 case vmIntrinsics::_allocateInstance: 382 case vmIntrinsics::_newArray: 383 case vmIntrinsics::_getLength: 384 case vmIntrinsics::_copyOf: 385 case vmIntrinsics::_copyOfRange: 386 case vmIntrinsics::_clone: 387 case vmIntrinsics::_isAssignableFrom: 388 case vmIntrinsics::_isInstance: 389 case vmIntrinsics::_getModifiers: 390 case vmIntrinsics::_isInterface: 391 case vmIntrinsics::_isArray: 392 case vmIntrinsics::_isPrimitive: 393 case vmIntrinsics::_getSuperclass: 394 case vmIntrinsics::_getClassAccessFlags: 395 case vmIntrinsics::_floatToRawIntBits: 396 case vmIntrinsics::_floatToIntBits: 397 case vmIntrinsics::_intBitsToFloat: 398 case vmIntrinsics::_doubleToRawLongBits: 399 case vmIntrinsics::_doubleToLongBits: 400 case vmIntrinsics::_longBitsToDouble: 401 case vmIntrinsics::_Reference_get: 402 case vmIntrinsics::_Class_cast: 403 case vmIntrinsics::_aescrypt_encryptBlock: 404 case vmIntrinsics::_aescrypt_decryptBlock: 405 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: 406 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: 407 case vmIntrinsics::_sha_implCompress: 408 case vmIntrinsics::_sha2_implCompress: 409 case vmIntrinsics::_sha5_implCompress: 410 case vmIntrinsics::_digestBase_implCompressMB: 411 case vmIntrinsics::_multiplyToLen: 412 case vmIntrinsics::_squareToLen: 413 case vmIntrinsics::_mulAdd: 414 case vmIntrinsics::_montgomeryMultiply: 415 case vmIntrinsics::_montgomerySquare: 416 case vmIntrinsics::_ghash_processBlocks: 417 case vmIntrinsics::_updateCRC32: 418 case vmIntrinsics::_updateBytesCRC32: 419 case vmIntrinsics::_updateByteBufferCRC32: 420 case vmIntrinsics::_updateBytesCRC32C: 421 case vmIntrinsics::_updateDirectByteBufferCRC32C: 422 case vmIntrinsics::_profileBoolean: 423 case vmIntrinsics::_isCompileConstant: 424 break; 425 default: 426 return false; 427 } 428 return true; 429 } 430 431 int C2Compiler::initial_code_buffer_size() { 432 assert(SegmentedCodeCache, "Should be only used with a segmented code cache"); 433 return Compile::MAX_inst_size + Compile::MAX_locs_size + initial_const_capacity; 434 }