Mon, 25 May 2020 14:24:27 +0800
8244407: JVM crashes after transformation in C2 IdealLoopTree::split_fall_in
Reviewed-by: thartmann, kvn, andrew
Contributed-by: zhouyong44@huawei.com
duke@435 | 1 | /* |
kvn@7027 | 2 | * Copyright (c) 1998, 2014, 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 | #ifndef SHARE_VM_OPTO_RUNTIME_HPP |
stefank@2314 | 26 | #define SHARE_VM_OPTO_RUNTIME_HPP |
stefank@2314 | 27 | |
stefank@2314 | 28 | #include "code/codeBlob.hpp" |
stefank@2314 | 29 | #include "opto/machnode.hpp" |
stefank@2314 | 30 | #include "opto/type.hpp" |
stefank@2314 | 31 | #include "runtime/biasedLocking.hpp" |
kvn@6429 | 32 | #include "runtime/rtmLocking.hpp" |
stefank@2314 | 33 | #include "runtime/deoptimization.hpp" |
stefank@2314 | 34 | #include "runtime/vframe.hpp" |
stefank@2314 | 35 | |
duke@435 | 36 | //------------------------------OptoRuntime------------------------------------ |
duke@435 | 37 | // Opto compiler runtime routines |
duke@435 | 38 | // |
duke@435 | 39 | // These are all generated from Ideal graphs. They are called with the |
duke@435 | 40 | // Java calling convention. Internally they call C++. They are made once at |
duke@435 | 41 | // startup time and Opto compiles calls to them later. |
duke@435 | 42 | // Things are broken up into quads: the signature they will be called with, |
duke@435 | 43 | // the address of the generated code, the corresponding C++ code and an |
duke@435 | 44 | // nmethod. |
duke@435 | 45 | |
duke@435 | 46 | // The signature (returned by "xxx_Type()") is used at startup time by the |
duke@435 | 47 | // Generator to make the generated code "xxx_Java". Opto compiles calls |
duke@435 | 48 | // to the generated code "xxx_Java". When the compiled code gets executed, |
duke@435 | 49 | // it calls the C++ code "xxx_C". The generated nmethod is saved in the |
duke@435 | 50 | // CodeCache. Exception handlers use the nmethod to get the callee-save |
duke@435 | 51 | // register OopMaps. |
duke@435 | 52 | class CallInfo; |
duke@435 | 53 | |
duke@435 | 54 | // |
duke@435 | 55 | // NamedCounters are tagged counters which can be used for profiling |
duke@435 | 56 | // code in various ways. Currently they are used by the lock coarsening code |
duke@435 | 57 | // |
duke@435 | 58 | |
zgu@3900 | 59 | class NamedCounter : public CHeapObj<mtCompiler> { |
duke@435 | 60 | public: |
duke@435 | 61 | enum CounterTag { |
duke@435 | 62 | NoTag, |
duke@435 | 63 | LockCounter, |
duke@435 | 64 | EliminatedLockCounter, |
kvn@6429 | 65 | BiasedLockingCounter, |
kvn@6429 | 66 | RTMLockingCounter |
duke@435 | 67 | }; |
duke@435 | 68 | |
duke@435 | 69 | private: |
duke@435 | 70 | const char * _name; |
duke@435 | 71 | int _count; |
duke@435 | 72 | CounterTag _tag; |
duke@435 | 73 | NamedCounter* _next; |
duke@435 | 74 | |
duke@435 | 75 | public: |
duke@435 | 76 | NamedCounter(const char *n, CounterTag tag = NoTag): |
duke@435 | 77 | _name(n), |
duke@435 | 78 | _count(0), |
duke@435 | 79 | _next(NULL), |
duke@435 | 80 | _tag(tag) {} |
duke@435 | 81 | |
duke@435 | 82 | const char * name() const { return _name; } |
duke@435 | 83 | int count() const { return _count; } |
duke@435 | 84 | address addr() { return (address)&_count; } |
duke@435 | 85 | CounterTag tag() const { return _tag; } |
duke@435 | 86 | void set_tag(CounterTag tag) { _tag = tag; } |
duke@435 | 87 | |
duke@435 | 88 | NamedCounter* next() const { return _next; } |
duke@435 | 89 | void set_next(NamedCounter* next) { |
kvn@6429 | 90 | assert(_next == NULL || next == NULL, "already set"); |
duke@435 | 91 | _next = next; |
duke@435 | 92 | } |
duke@435 | 93 | |
duke@435 | 94 | }; |
duke@435 | 95 | |
duke@435 | 96 | class BiasedLockingNamedCounter : public NamedCounter { |
duke@435 | 97 | private: |
duke@435 | 98 | BiasedLockingCounters _counters; |
duke@435 | 99 | |
duke@435 | 100 | public: |
duke@435 | 101 | BiasedLockingNamedCounter(const char *n) : |
duke@435 | 102 | NamedCounter(n, BiasedLockingCounter), _counters() {} |
duke@435 | 103 | |
duke@435 | 104 | BiasedLockingCounters* counters() { return &_counters; } |
duke@435 | 105 | }; |
duke@435 | 106 | |
kvn@6429 | 107 | |
kvn@6429 | 108 | class RTMLockingNamedCounter : public NamedCounter { |
kvn@6429 | 109 | private: |
kvn@6429 | 110 | RTMLockingCounters _counters; |
kvn@6429 | 111 | |
kvn@6429 | 112 | public: |
kvn@6429 | 113 | RTMLockingNamedCounter(const char *n) : |
kvn@6429 | 114 | NamedCounter(n, RTMLockingCounter), _counters() {} |
kvn@6429 | 115 | |
kvn@6429 | 116 | RTMLockingCounters* counters() { return &_counters; } |
kvn@6429 | 117 | }; |
kvn@6429 | 118 | |
duke@435 | 119 | typedef const TypeFunc*(*TypeFunc_generator)(); |
duke@435 | 120 | |
duke@435 | 121 | class OptoRuntime : public AllStatic { |
duke@435 | 122 | friend class Matcher; // allow access to stub names |
duke@435 | 123 | |
duke@435 | 124 | private: |
duke@435 | 125 | // define stubs |
duke@435 | 126 | static address generate_stub(ciEnv* ci_env, TypeFunc_generator gen, address C_function, const char *name, int is_fancy_jump, bool pass_tls, bool save_arguments, bool return_pc); |
duke@435 | 127 | |
duke@435 | 128 | // References to generated stubs |
duke@435 | 129 | static address _new_instance_Java; |
duke@435 | 130 | static address _new_array_Java; |
kvn@3157 | 131 | static address _new_array_nozero_Java; |
duke@435 | 132 | static address _multianewarray2_Java; |
duke@435 | 133 | static address _multianewarray3_Java; |
duke@435 | 134 | static address _multianewarray4_Java; |
duke@435 | 135 | static address _multianewarray5_Java; |
iveresov@3002 | 136 | static address _multianewarrayN_Java; |
ysr@777 | 137 | static address _g1_wb_pre_Java; |
ysr@777 | 138 | static address _g1_wb_post_Java; |
duke@435 | 139 | static address _vtable_must_compile_Java; |
duke@435 | 140 | static address _complete_monitor_locking_Java; |
duke@435 | 141 | static address _rethrow_Java; |
duke@435 | 142 | |
duke@435 | 143 | static address _slow_arraycopy_Java; |
duke@435 | 144 | static address _register_finalizer_Java; |
duke@435 | 145 | |
duke@435 | 146 | # ifdef ENABLE_ZAP_DEAD_LOCALS |
duke@435 | 147 | static address _zap_dead_Java_locals_Java; |
duke@435 | 148 | static address _zap_dead_native_locals_Java; |
duke@435 | 149 | # endif |
duke@435 | 150 | |
duke@435 | 151 | |
duke@435 | 152 | // |
duke@435 | 153 | // Implementation of runtime methods |
duke@435 | 154 | // ================================= |
duke@435 | 155 | |
duke@435 | 156 | // Allocate storage for a Java instance. |
coleenp@4037 | 157 | static void new_instance_C(Klass* instance_klass, JavaThread *thread); |
duke@435 | 158 | |
duke@435 | 159 | // Allocate storage for a objArray or typeArray |
coleenp@4037 | 160 | static void new_array_C(Klass* array_klass, int len, JavaThread *thread); |
coleenp@4037 | 161 | static void new_array_nozero_C(Klass* array_klass, int len, JavaThread *thread); |
duke@435 | 162 | |
ysr@1601 | 163 | // Post-slow-path-allocation, pre-initializing-stores step for |
ysr@1601 | 164 | // implementing ReduceInitialCardMarks |
ysr@1601 | 165 | static void new_store_pre_barrier(JavaThread* thread); |
duke@435 | 166 | |
duke@435 | 167 | // Allocate storage for a multi-dimensional arrays |
duke@435 | 168 | // Note: needs to be fixed for arbitrary number of dimensions |
coleenp@4037 | 169 | static void multianewarray2_C(Klass* klass, int len1, int len2, JavaThread *thread); |
coleenp@4037 | 170 | static void multianewarray3_C(Klass* klass, int len1, int len2, int len3, JavaThread *thread); |
coleenp@4037 | 171 | static void multianewarray4_C(Klass* klass, int len1, int len2, int len3, int len4, JavaThread *thread); |
coleenp@4037 | 172 | static void multianewarray5_C(Klass* klass, int len1, int len2, int len3, int len4, int len5, JavaThread *thread); |
coleenp@4037 | 173 | static void multianewarrayN_C(Klass* klass, arrayOopDesc* dims, JavaThread *thread); |
ysr@777 | 174 | static void g1_wb_pre_C(oopDesc* orig, JavaThread* thread); |
ysr@777 | 175 | static void g1_wb_post_C(void* card_addr, JavaThread* thread); |
duke@435 | 176 | |
duke@435 | 177 | public: |
duke@435 | 178 | // Slow-path Locking and Unlocking |
duke@435 | 179 | static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread); |
duke@435 | 180 | static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock); |
duke@435 | 181 | |
duke@435 | 182 | private: |
duke@435 | 183 | |
duke@435 | 184 | // Implicit exception support |
duke@435 | 185 | static void throw_null_exception_C(JavaThread* thread); |
duke@435 | 186 | |
duke@435 | 187 | // Exception handling |
duke@435 | 188 | static address handle_exception_C (JavaThread* thread); |
duke@435 | 189 | static address handle_exception_C_helper(JavaThread* thread, nmethod*& nm); |
duke@435 | 190 | static address rethrow_C (oopDesc* exception, JavaThread *thread, address return_pc ); |
kvn@4364 | 191 | static void deoptimize_caller_frame (JavaThread *thread); |
duke@435 | 192 | static void deoptimize_caller_frame (JavaThread *thread, bool doit); |
kvn@3259 | 193 | static bool is_deoptimized_caller_frame (JavaThread *thread); |
duke@435 | 194 | |
duke@435 | 195 | // CodeBlob support |
duke@435 | 196 | // =================================================================== |
duke@435 | 197 | |
duke@435 | 198 | static ExceptionBlob* _exception_blob; |
duke@435 | 199 | static void generate_exception_blob(); |
duke@435 | 200 | |
duke@435 | 201 | static void register_finalizer(oopDesc* obj, JavaThread* thread); |
duke@435 | 202 | |
duke@435 | 203 | // zaping dead locals, either from Java frames or from native frames |
duke@435 | 204 | # ifdef ENABLE_ZAP_DEAD_LOCALS |
duke@435 | 205 | static void zap_dead_Java_locals_C( JavaThread* thread); |
duke@435 | 206 | static void zap_dead_native_locals_C( JavaThread* thread); |
duke@435 | 207 | |
duke@435 | 208 | static void zap_dead_java_or_native_locals( JavaThread*, bool (*)(frame*)); |
duke@435 | 209 | |
duke@435 | 210 | public: |
duke@435 | 211 | static int ZapDeadCompiledLocals_count; |
duke@435 | 212 | |
duke@435 | 213 | # endif |
duke@435 | 214 | |
duke@435 | 215 | |
duke@435 | 216 | public: |
duke@435 | 217 | |
duke@435 | 218 | static bool is_callee_saved_register(MachRegisterNumbers reg); |
duke@435 | 219 | |
anoll@5919 | 220 | // One time only generate runtime code stubs. Returns true |
anoll@5919 | 221 | // when runtime stubs have been generated successfully and |
anoll@5919 | 222 | // false otherwise. |
anoll@5919 | 223 | static bool generate(ciEnv* env); |
duke@435 | 224 | |
duke@435 | 225 | // Returns the name of a stub |
duke@435 | 226 | static const char* stub_name(address entry); |
duke@435 | 227 | |
duke@435 | 228 | // access to runtime stubs entry points for java code |
duke@435 | 229 | static address new_instance_Java() { return _new_instance_Java; } |
duke@435 | 230 | static address new_array_Java() { return _new_array_Java; } |
kvn@3157 | 231 | static address new_array_nozero_Java() { return _new_array_nozero_Java; } |
duke@435 | 232 | static address multianewarray2_Java() { return _multianewarray2_Java; } |
duke@435 | 233 | static address multianewarray3_Java() { return _multianewarray3_Java; } |
duke@435 | 234 | static address multianewarray4_Java() { return _multianewarray4_Java; } |
duke@435 | 235 | static address multianewarray5_Java() { return _multianewarray5_Java; } |
iveresov@3002 | 236 | static address multianewarrayN_Java() { return _multianewarrayN_Java; } |
ysr@777 | 237 | static address g1_wb_pre_Java() { return _g1_wb_pre_Java; } |
ysr@777 | 238 | static address g1_wb_post_Java() { return _g1_wb_post_Java; } |
duke@435 | 239 | static address vtable_must_compile_stub() { return _vtable_must_compile_Java; } |
duke@435 | 240 | static address complete_monitor_locking_Java() { return _complete_monitor_locking_Java; } |
duke@435 | 241 | |
duke@435 | 242 | static address slow_arraycopy_Java() { return _slow_arraycopy_Java; } |
duke@435 | 243 | static address register_finalizer_Java() { return _register_finalizer_Java; } |
duke@435 | 244 | |
duke@435 | 245 | |
duke@435 | 246 | # ifdef ENABLE_ZAP_DEAD_LOCALS |
duke@435 | 247 | static address zap_dead_locals_stub(bool is_native) { return is_native |
duke@435 | 248 | ? _zap_dead_native_locals_Java |
duke@435 | 249 | : _zap_dead_Java_locals_Java; } |
duke@435 | 250 | static MachNode* node_to_call_zap_dead_locals(Node* n, int block_num, bool is_native); |
duke@435 | 251 | # endif |
duke@435 | 252 | |
duke@435 | 253 | static ExceptionBlob* exception_blob() { return _exception_blob; } |
duke@435 | 254 | |
duke@435 | 255 | // Leaf routines helping with method data update |
duke@435 | 256 | static void profile_receiver_type_C(DataLayout* data, oopDesc* receiver); |
duke@435 | 257 | |
duke@435 | 258 | // Implicit exception support |
duke@435 | 259 | static void throw_div0_exception_C (JavaThread* thread); |
duke@435 | 260 | static void throw_stack_overflow_error_C(JavaThread* thread); |
duke@435 | 261 | |
duke@435 | 262 | // Exception handling |
duke@435 | 263 | static address rethrow_stub() { return _rethrow_Java; } |
duke@435 | 264 | |
duke@435 | 265 | |
duke@435 | 266 | // Type functions |
duke@435 | 267 | // ====================================================== |
duke@435 | 268 | |
duke@435 | 269 | static const TypeFunc* new_instance_Type(); // object allocation (slow case) |
duke@435 | 270 | static const TypeFunc* new_array_Type (); // [a]newarray (slow case) |
duke@435 | 271 | static const TypeFunc* multianewarray_Type(int ndim); // multianewarray |
duke@435 | 272 | static const TypeFunc* multianewarray2_Type(); // multianewarray |
duke@435 | 273 | static const TypeFunc* multianewarray3_Type(); // multianewarray |
duke@435 | 274 | static const TypeFunc* multianewarray4_Type(); // multianewarray |
duke@435 | 275 | static const TypeFunc* multianewarray5_Type(); // multianewarray |
iveresov@3002 | 276 | static const TypeFunc* multianewarrayN_Type(); // multianewarray |
ysr@777 | 277 | static const TypeFunc* g1_wb_pre_Type(); |
ysr@777 | 278 | static const TypeFunc* g1_wb_post_Type(); |
duke@435 | 279 | static const TypeFunc* complete_monitor_enter_Type(); |
duke@435 | 280 | static const TypeFunc* complete_monitor_exit_Type(); |
duke@435 | 281 | static const TypeFunc* uncommon_trap_Type(); |
duke@435 | 282 | static const TypeFunc* athrow_Type(); |
duke@435 | 283 | static const TypeFunc* rethrow_Type(); |
duke@435 | 284 | static const TypeFunc* Math_D_D_Type(); // sin,cos & friends |
duke@435 | 285 | static const TypeFunc* Math_DD_D_Type(); // mod,pow & friends |
duke@435 | 286 | static const TypeFunc* modf_Type(); |
duke@435 | 287 | static const TypeFunc* l2f_Type(); |
rbackman@3709 | 288 | static const TypeFunc* void_long_Type(); |
duke@435 | 289 | |
duke@435 | 290 | static const TypeFunc* flush_windows_Type(); |
duke@435 | 291 | |
duke@435 | 292 | // arraycopy routine types |
duke@435 | 293 | static const TypeFunc* fast_arraycopy_Type(); // bit-blasters |
duke@435 | 294 | static const TypeFunc* checkcast_arraycopy_Type(); |
duke@435 | 295 | static const TypeFunc* generic_arraycopy_Type(); |
duke@435 | 296 | static const TypeFunc* slow_arraycopy_Type(); // the full routine |
duke@435 | 297 | |
never@2118 | 298 | static const TypeFunc* array_fill_Type(); |
never@2118 | 299 | |
kvn@4205 | 300 | static const TypeFunc* aescrypt_block_Type(); |
kvn@4205 | 301 | static const TypeFunc* cipherBlockChaining_aescrypt_Type(); |
kvn@4205 | 302 | |
kvn@7027 | 303 | static const TypeFunc* sha_implCompress_Type(); |
kvn@7027 | 304 | static const TypeFunc* digestBase_implCompressMB_Type(); |
kvn@7027 | 305 | |
kvn@7152 | 306 | static const TypeFunc* multiplyToLen_Type(); |
kvn@7152 | 307 | |
igerasim@8307 | 308 | static const TypeFunc* squareToLen_Type(); |
igerasim@8307 | 309 | |
igerasim@8307 | 310 | static const TypeFunc* mulAdd_Type(); |
vkempik@8318 | 311 | static const TypeFunc* montgomeryMultiply_Type(); |
vkempik@8318 | 312 | static const TypeFunc* montgomerySquare_Type(); |
igerasim@8307 | 313 | |
ascarpino@9788 | 314 | static const TypeFunc* ghash_processBlocks_Type(); |
ascarpino@9788 | 315 | |
drchase@5353 | 316 | static const TypeFunc* updateBytesCRC32_Type(); |
drchase@5353 | 317 | |
duke@435 | 318 | // leaf on stack replacement interpreter accessor types |
duke@435 | 319 | static const TypeFunc* osr_end_Type(); |
duke@435 | 320 | |
duke@435 | 321 | // leaf methodData routine types |
duke@435 | 322 | static const TypeFunc* profile_receiver_type_Type(); |
duke@435 | 323 | |
duke@435 | 324 | // leaf on stack replacement interpreter accessor types |
duke@435 | 325 | static const TypeFunc* fetch_int_Type(); |
duke@435 | 326 | static const TypeFunc* fetch_long_Type(); |
duke@435 | 327 | static const TypeFunc* fetch_float_Type(); |
duke@435 | 328 | static const TypeFunc* fetch_double_Type(); |
duke@435 | 329 | static const TypeFunc* fetch_oop_Type(); |
duke@435 | 330 | static const TypeFunc* fetch_monitor_Type(); |
duke@435 | 331 | |
duke@435 | 332 | static const TypeFunc* register_finalizer_Type(); |
duke@435 | 333 | |
duke@435 | 334 | // Dtrace support |
duke@435 | 335 | static const TypeFunc* dtrace_method_entry_exit_Type(); |
duke@435 | 336 | static const TypeFunc* dtrace_object_alloc_Type(); |
duke@435 | 337 | |
duke@435 | 338 | # ifdef ENABLE_ZAP_DEAD_LOCALS |
duke@435 | 339 | static const TypeFunc* zap_dead_locals_Type(); |
duke@435 | 340 | # endif |
duke@435 | 341 | |
duke@435 | 342 | private: |
duke@435 | 343 | static NamedCounter * volatile _named_counters; |
duke@435 | 344 | |
duke@435 | 345 | public: |
duke@435 | 346 | // helper function which creates a named counter labeled with the |
duke@435 | 347 | // if they are available |
duke@435 | 348 | static NamedCounter* new_named_counter(JVMState* jvms, NamedCounter::CounterTag tag); |
duke@435 | 349 | |
duke@435 | 350 | // dumps all the named counters |
duke@435 | 351 | static void print_named_counters(); |
duke@435 | 352 | |
duke@435 | 353 | }; |
stefank@2314 | 354 | |
stefank@2314 | 355 | #endif // SHARE_VM_OPTO_RUNTIME_HPP |