Tue, 09 Mar 2010 20:16:19 +0100
6919934: JSR 292 needs to support x86 C1
Summary: This implements JSR 292 support for C1 x86.
Reviewed-by: never, jrose, kvn
duke@435 | 1 | /* |
xdono@905 | 2 | * Copyright 1999-2008 Sun Microsystems, Inc. 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 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | class MemoryBuffer; |
duke@435 | 26 | |
duke@435 | 27 | class GraphBuilder VALUE_OBJ_CLASS_SPEC { |
duke@435 | 28 | private: |
duke@435 | 29 | // Per-scope data. These are pushed and popped as we descend into |
duke@435 | 30 | // inlined methods. Currently in order to generate good code in the |
duke@435 | 31 | // inliner we have to attempt to inline methods directly into the |
duke@435 | 32 | // basic block we are parsing; this adds complexity. |
duke@435 | 33 | class ScopeData: public CompilationResourceObj { |
duke@435 | 34 | private: |
duke@435 | 35 | ScopeData* _parent; |
duke@435 | 36 | // bci-to-block mapping |
duke@435 | 37 | BlockList* _bci2block; |
duke@435 | 38 | // Scope |
duke@435 | 39 | IRScope* _scope; |
duke@435 | 40 | // Whether this scope or any parent scope has exception handlers |
duke@435 | 41 | bool _has_handler; |
duke@435 | 42 | // The bytecodes |
duke@435 | 43 | ciBytecodeStream* _stream; |
duke@435 | 44 | |
duke@435 | 45 | // Work list |
duke@435 | 46 | BlockList* _work_list; |
duke@435 | 47 | |
duke@435 | 48 | // Maximum inline size for this scope |
duke@435 | 49 | intx _max_inline_size; |
duke@435 | 50 | // Expression stack depth at point where inline occurred |
duke@435 | 51 | int _caller_stack_size; |
duke@435 | 52 | |
duke@435 | 53 | // The continuation point for the inline. Currently only used in |
duke@435 | 54 | // multi-block inlines, but eventually would like to use this for |
duke@435 | 55 | // all inlines for uniformity and simplicity; in this case would |
duke@435 | 56 | // get the continuation point from the BlockList instead of |
duke@435 | 57 | // fabricating it anew because Invokes would be considered to be |
duke@435 | 58 | // BlockEnds. |
duke@435 | 59 | BlockBegin* _continuation; |
duke@435 | 60 | |
duke@435 | 61 | // Without return value of inlined method on stack |
duke@435 | 62 | ValueStack* _continuation_state; |
duke@435 | 63 | |
duke@435 | 64 | // Was this ScopeData created only for the parsing and inlining of |
duke@435 | 65 | // a jsr? |
duke@435 | 66 | bool _parsing_jsr; |
duke@435 | 67 | // We track the destination bci of the jsr only to determine |
duke@435 | 68 | // bailout conditions, since we only handle a subset of all of the |
duke@435 | 69 | // possible jsr-ret control structures. Recursive invocations of a |
duke@435 | 70 | // jsr are disallowed by the verifier. |
duke@435 | 71 | int _jsr_entry_bci; |
duke@435 | 72 | // We need to track the local variable in which the return address |
duke@435 | 73 | // was stored to ensure we can handle inlining the jsr, because we |
duke@435 | 74 | // don't handle arbitrary jsr/ret constructs. |
duke@435 | 75 | int _jsr_ret_addr_local; |
duke@435 | 76 | // If we are parsing a jsr, the continuation point for rets |
duke@435 | 77 | BlockBegin* _jsr_continuation; |
duke@435 | 78 | // Cloned XHandlers for jsr-related ScopeDatas |
duke@435 | 79 | XHandlers* _jsr_xhandlers; |
duke@435 | 80 | |
duke@435 | 81 | // Number of returns seen in this scope |
duke@435 | 82 | int _num_returns; |
duke@435 | 83 | |
duke@435 | 84 | // In order to generate profitable code for inlining, we currently |
duke@435 | 85 | // have to perform an optimization for single-block inlined |
duke@435 | 86 | // methods where we continue parsing into the same block. This |
duke@435 | 87 | // allows us to perform CSE across inlined scopes and to avoid |
duke@435 | 88 | // storing parameters to the stack. Having a global register |
duke@435 | 89 | // allocator and being able to perform global CSE would allow this |
duke@435 | 90 | // code to be removed and thereby simplify the inliner. |
duke@435 | 91 | BlockBegin* _cleanup_block; // The block to which the return was added |
duke@435 | 92 | Instruction* _cleanup_return_prev; // Instruction before return instruction |
duke@435 | 93 | ValueStack* _cleanup_state; // State of that block (not yet pinned) |
duke@435 | 94 | |
duke@435 | 95 | public: |
duke@435 | 96 | ScopeData(ScopeData* parent); |
duke@435 | 97 | |
duke@435 | 98 | ScopeData* parent() const { return _parent; } |
duke@435 | 99 | |
duke@435 | 100 | BlockList* bci2block() const { return _bci2block; } |
duke@435 | 101 | void set_bci2block(BlockList* bci2block) { _bci2block = bci2block; } |
duke@435 | 102 | |
duke@435 | 103 | // NOTE: this has a different effect when parsing jsrs |
duke@435 | 104 | BlockBegin* block_at(int bci); |
duke@435 | 105 | |
duke@435 | 106 | IRScope* scope() const { return _scope; } |
duke@435 | 107 | // Has side-effect of setting has_handler flag |
duke@435 | 108 | void set_scope(IRScope* scope); |
duke@435 | 109 | |
duke@435 | 110 | // Whether this or any parent scope has exception handlers |
duke@435 | 111 | bool has_handler() const { return _has_handler; } |
duke@435 | 112 | void set_has_handler() { _has_handler = true; } |
duke@435 | 113 | |
duke@435 | 114 | // Exception handlers list to be used for this scope |
duke@435 | 115 | XHandlers* xhandlers() const; |
duke@435 | 116 | |
duke@435 | 117 | // How to get a block to be parsed |
duke@435 | 118 | void add_to_work_list(BlockBegin* block); |
duke@435 | 119 | // How to remove the next block to be parsed; returns NULL if none left |
duke@435 | 120 | BlockBegin* remove_from_work_list(); |
duke@435 | 121 | // Indicates parse is over |
duke@435 | 122 | bool is_work_list_empty() const; |
duke@435 | 123 | |
duke@435 | 124 | ciBytecodeStream* stream() { return _stream; } |
duke@435 | 125 | void set_stream(ciBytecodeStream* stream) { _stream = stream; } |
duke@435 | 126 | |
duke@435 | 127 | intx max_inline_size() const { return _max_inline_size; } |
duke@435 | 128 | int caller_stack_size() const; |
duke@435 | 129 | |
duke@435 | 130 | BlockBegin* continuation() const { return _continuation; } |
duke@435 | 131 | void set_continuation(BlockBegin* cont) { _continuation = cont; } |
duke@435 | 132 | |
duke@435 | 133 | ValueStack* continuation_state() const { return _continuation_state; } |
duke@435 | 134 | void set_continuation_state(ValueStack* s) { _continuation_state = s; } |
duke@435 | 135 | |
duke@435 | 136 | // Indicates whether this ScopeData was pushed only for the |
duke@435 | 137 | // parsing and inlining of a jsr |
duke@435 | 138 | bool parsing_jsr() const { return _parsing_jsr; } |
duke@435 | 139 | void set_parsing_jsr() { _parsing_jsr = true; } |
duke@435 | 140 | int jsr_entry_bci() const { return _jsr_entry_bci; } |
duke@435 | 141 | void set_jsr_entry_bci(int bci) { _jsr_entry_bci = bci; } |
duke@435 | 142 | void set_jsr_return_address_local(int local_no){ _jsr_ret_addr_local = local_no; } |
duke@435 | 143 | int jsr_return_address_local() const { return _jsr_ret_addr_local; } |
duke@435 | 144 | // Must be called after scope is set up for jsr ScopeData |
duke@435 | 145 | void setup_jsr_xhandlers(); |
duke@435 | 146 | |
duke@435 | 147 | // The jsr continuation is only used when parsing_jsr is true, and |
duke@435 | 148 | // is different from the "normal" continuation since we can end up |
duke@435 | 149 | // doing a return (rather than a ret) from within a subroutine |
duke@435 | 150 | BlockBegin* jsr_continuation() const { return _jsr_continuation; } |
duke@435 | 151 | void set_jsr_continuation(BlockBegin* cont) { _jsr_continuation = cont; } |
duke@435 | 152 | |
duke@435 | 153 | int num_returns(); |
duke@435 | 154 | void incr_num_returns(); |
duke@435 | 155 | |
duke@435 | 156 | void set_inline_cleanup_info(BlockBegin* block, |
duke@435 | 157 | Instruction* return_prev, |
duke@435 | 158 | ValueStack* return_state); |
duke@435 | 159 | BlockBegin* inline_cleanup_block() const { return _cleanup_block; } |
duke@435 | 160 | Instruction* inline_cleanup_return_prev() const{ return _cleanup_return_prev; } |
duke@435 | 161 | ValueStack* inline_cleanup_state() const { return _cleanup_state; } |
duke@435 | 162 | }; |
duke@435 | 163 | |
duke@435 | 164 | // for all GraphBuilders |
duke@435 | 165 | static bool _is_initialized; // true if trap tables were initialized, false otherwise |
duke@435 | 166 | static bool _can_trap[Bytecodes::number_of_java_codes]; |
duke@435 | 167 | static bool _is_async[Bytecodes::number_of_java_codes]; |
duke@435 | 168 | |
duke@435 | 169 | // for each instance of GraphBuilder |
duke@435 | 170 | ScopeData* _scope_data; // Per-scope data; used for inlining |
duke@435 | 171 | Compilation* _compilation; // the current compilation |
duke@435 | 172 | ValueMap* _vmap; // the map of values encountered (for CSE) |
duke@435 | 173 | MemoryBuffer* _memory; |
duke@435 | 174 | const char* _inline_bailout_msg; // non-null if most recent inline attempt failed |
duke@435 | 175 | int _instruction_count; // for bailing out in pathological jsr/ret cases |
duke@435 | 176 | BlockBegin* _start; // the start block |
duke@435 | 177 | BlockBegin* _osr_entry; // the osr entry block block |
duke@435 | 178 | ValueStack* _initial_state; // The state for the start block |
duke@435 | 179 | |
duke@435 | 180 | // for each call to connect_to_end; can also be set by inliner |
duke@435 | 181 | BlockBegin* _block; // the current block |
duke@435 | 182 | ValueStack* _state; // the current execution state |
duke@435 | 183 | ValueStack* _exception_state; // state that will be used by handle_exception |
duke@435 | 184 | Instruction* _last; // the last instruction added |
duke@435 | 185 | bool _skip_block; // skip processing of the rest of this block |
duke@435 | 186 | |
duke@435 | 187 | // accessors |
duke@435 | 188 | ScopeData* scope_data() const { return _scope_data; } |
duke@435 | 189 | Compilation* compilation() const { return _compilation; } |
duke@435 | 190 | BlockList* bci2block() const { return scope_data()->bci2block(); } |
duke@435 | 191 | ValueMap* vmap() const { assert(UseLocalValueNumbering, "should not access otherwise"); return _vmap; } |
duke@435 | 192 | bool has_handler() const { return scope_data()->has_handler(); } |
duke@435 | 193 | |
duke@435 | 194 | BlockBegin* block() const { return _block; } |
duke@435 | 195 | ValueStack* state() const { return _state; } |
duke@435 | 196 | void set_state(ValueStack* state) { _state = state; } |
duke@435 | 197 | IRScope* scope() const { return scope_data()->scope(); } |
duke@435 | 198 | ValueStack* exception_state() const { return _exception_state; } |
duke@435 | 199 | void set_exception_state(ValueStack* s) { _exception_state = s; } |
duke@435 | 200 | ciMethod* method() const { return scope()->method(); } |
duke@435 | 201 | ciBytecodeStream* stream() const { return scope_data()->stream(); } |
duke@435 | 202 | Instruction* last() const { return _last; } |
duke@435 | 203 | Bytecodes::Code code() const { return stream()->cur_bc(); } |
duke@435 | 204 | int bci() const { return stream()->cur_bci(); } |
duke@435 | 205 | int next_bci() const { return stream()->next_bci(); } |
duke@435 | 206 | |
duke@435 | 207 | // unified bailout support |
duke@435 | 208 | void bailout(const char* msg) const { compilation()->bailout(msg); } |
duke@435 | 209 | bool bailed_out() const { return compilation()->bailed_out(); } |
duke@435 | 210 | |
duke@435 | 211 | // stack manipulation helpers |
duke@435 | 212 | void ipush(Value t) const { state()->ipush(t); } |
duke@435 | 213 | void lpush(Value t) const { state()->lpush(t); } |
duke@435 | 214 | void fpush(Value t) const { state()->fpush(t); } |
duke@435 | 215 | void dpush(Value t) const { state()->dpush(t); } |
duke@435 | 216 | void apush(Value t) const { state()->apush(t); } |
duke@435 | 217 | void push(ValueType* type, Value t) const { state()-> push(type, t); } |
duke@435 | 218 | |
duke@435 | 219 | Value ipop() { return state()->ipop(); } |
duke@435 | 220 | Value lpop() { return state()->lpop(); } |
duke@435 | 221 | Value fpop() { return state()->fpop(); } |
duke@435 | 222 | Value dpop() { return state()->dpop(); } |
duke@435 | 223 | Value apop() { return state()->apop(); } |
duke@435 | 224 | Value pop(ValueType* type) { return state()-> pop(type); } |
duke@435 | 225 | |
duke@435 | 226 | // instruction helpers |
duke@435 | 227 | void load_constant(); |
duke@435 | 228 | void load_local(ValueType* type, int index); |
duke@435 | 229 | void store_local(ValueType* type, int index); |
duke@435 | 230 | void store_local(ValueStack* state, Value value, ValueType* type, int index); |
duke@435 | 231 | void load_indexed (BasicType type); |
duke@435 | 232 | void store_indexed(BasicType type); |
duke@435 | 233 | void stack_op(Bytecodes::Code code); |
duke@435 | 234 | void arithmetic_op(ValueType* type, Bytecodes::Code code, ValueStack* lock_stack = NULL); |
duke@435 | 235 | void negate_op(ValueType* type); |
duke@435 | 236 | void shift_op(ValueType* type, Bytecodes::Code code); |
duke@435 | 237 | void logic_op(ValueType* type, Bytecodes::Code code); |
duke@435 | 238 | void compare_op(ValueType* type, Bytecodes::Code code); |
duke@435 | 239 | void convert(Bytecodes::Code op, BasicType from, BasicType to); |
duke@435 | 240 | void increment(); |
duke@435 | 241 | void _goto(int from_bci, int to_bci); |
duke@435 | 242 | void if_node(Value x, If::Condition cond, Value y, ValueStack* stack_before); |
duke@435 | 243 | void if_zero(ValueType* type, If::Condition cond); |
duke@435 | 244 | void if_null(ValueType* type, If::Condition cond); |
duke@435 | 245 | void if_same(ValueType* type, If::Condition cond); |
duke@435 | 246 | void jsr(int dest); |
duke@435 | 247 | void ret(int local_index); |
duke@435 | 248 | void table_switch(); |
duke@435 | 249 | void lookup_switch(); |
duke@435 | 250 | void method_return(Value x); |
duke@435 | 251 | void call_register_finalizer(); |
duke@435 | 252 | void access_field(Bytecodes::Code code); |
duke@435 | 253 | void invoke(Bytecodes::Code code); |
duke@435 | 254 | void new_instance(int klass_index); |
duke@435 | 255 | void new_type_array(); |
duke@435 | 256 | void new_object_array(); |
duke@435 | 257 | void check_cast(int klass_index); |
duke@435 | 258 | void instance_of(int klass_index); |
duke@435 | 259 | void monitorenter(Value x, int bci); |
duke@435 | 260 | void monitorexit(Value x, int bci); |
duke@435 | 261 | void new_multi_array(int dimensions); |
duke@435 | 262 | void throw_op(int bci); |
duke@435 | 263 | Value round_fp(Value fp_value); |
duke@435 | 264 | |
duke@435 | 265 | // stack/code manipulation helpers |
duke@435 | 266 | Instruction* append_with_bci(Instruction* instr, int bci); |
duke@435 | 267 | Instruction* append(Instruction* instr); |
duke@435 | 268 | Instruction* append_split(StateSplit* instr); |
duke@435 | 269 | |
duke@435 | 270 | // other helpers |
duke@435 | 271 | static bool is_initialized() { return _is_initialized; } |
duke@435 | 272 | static bool is_async(Bytecodes::Code code) { |
duke@435 | 273 | assert(0 <= code && code < Bytecodes::number_of_java_codes, "illegal bytecode"); |
duke@435 | 274 | return _is_async[code]; |
duke@435 | 275 | } |
duke@435 | 276 | BlockBegin* block_at(int bci) { return scope_data()->block_at(bci); } |
duke@435 | 277 | XHandlers* handle_exception(int bci); |
duke@435 | 278 | void connect_to_end(BlockBegin* beg); |
duke@435 | 279 | void null_check(Value value); |
duke@435 | 280 | void eliminate_redundant_phis(BlockBegin* start); |
duke@435 | 281 | BlockEnd* iterate_bytecodes_for_block(int bci); |
duke@435 | 282 | void iterate_all_blocks(bool start_in_current_block_for_inlining = false); |
duke@435 | 283 | Dependencies* dependency_recorder() const; // = compilation()->dependencies() |
duke@435 | 284 | bool direct_compare(ciKlass* k); |
duke@435 | 285 | |
duke@435 | 286 | void kill_all(); |
duke@435 | 287 | |
duke@435 | 288 | ValueStack* lock_stack(); |
duke@435 | 289 | |
duke@435 | 290 | // |
duke@435 | 291 | // Inlining support |
duke@435 | 292 | // |
duke@435 | 293 | |
duke@435 | 294 | // accessors |
duke@435 | 295 | bool parsing_jsr() const { return scope_data()->parsing_jsr(); } |
duke@435 | 296 | BlockBegin* continuation() const { return scope_data()->continuation(); } |
duke@435 | 297 | ValueStack* continuation_state() const { return scope_data()->continuation_state(); } |
duke@435 | 298 | BlockBegin* jsr_continuation() const { return scope_data()->jsr_continuation(); } |
duke@435 | 299 | int caller_stack_size() const { return scope_data()->caller_stack_size(); } |
duke@435 | 300 | void set_continuation(BlockBegin* continuation) { scope_data()->set_continuation(continuation); } |
duke@435 | 301 | void set_inline_cleanup_info(BlockBegin* block, |
duke@435 | 302 | Instruction* return_prev, |
duke@435 | 303 | ValueStack* return_state) { scope_data()->set_inline_cleanup_info(block, |
duke@435 | 304 | return_prev, |
duke@435 | 305 | return_state); } |
duke@435 | 306 | BlockBegin* inline_cleanup_block() const { return scope_data()->inline_cleanup_block(); } |
duke@435 | 307 | Instruction* inline_cleanup_return_prev() const { return scope_data()->inline_cleanup_return_prev(); } |
duke@435 | 308 | ValueStack* inline_cleanup_state() const { return scope_data()->inline_cleanup_state(); } |
duke@435 | 309 | void incr_num_returns() { scope_data()->incr_num_returns(); } |
duke@435 | 310 | int num_returns() const { return scope_data()->num_returns(); } |
duke@435 | 311 | intx max_inline_size() const { return scope_data()->max_inline_size(); } |
duke@435 | 312 | int inline_level() const { return scope()->level(); } |
duke@435 | 313 | int recursive_inline_level(ciMethod* callee) const; |
duke@435 | 314 | |
duke@435 | 315 | // inlining of synchronized methods |
duke@435 | 316 | void inline_sync_entry(Value lock, BlockBegin* sync_handler); |
duke@435 | 317 | void fill_sync_handler(Value lock, BlockBegin* sync_handler, bool default_handler = false); |
duke@435 | 318 | |
duke@435 | 319 | // inliners |
duke@435 | 320 | bool try_inline(ciMethod* callee, bool holder_known); |
duke@435 | 321 | bool try_inline_intrinsics(ciMethod* callee); |
duke@435 | 322 | bool try_inline_full (ciMethod* callee, bool holder_known); |
duke@435 | 323 | bool try_inline_jsr(int jsr_dest_bci); |
duke@435 | 324 | |
duke@435 | 325 | // helpers |
duke@435 | 326 | void inline_bailout(const char* msg); |
duke@435 | 327 | BlockBegin* header_block(BlockBegin* entry, BlockBegin::Flag f, ValueStack* state); |
duke@435 | 328 | BlockBegin* setup_start_block(int osr_bci, BlockBegin* std_entry, BlockBegin* osr_entry, ValueStack* init_state); |
duke@435 | 329 | void setup_osr_entry_block(); |
duke@435 | 330 | void clear_inline_bailout(); |
duke@435 | 331 | ValueStack* state_at_entry(); |
duke@435 | 332 | void push_root_scope(IRScope* scope, BlockList* bci2block, BlockBegin* start); |
duke@435 | 333 | void push_scope(ciMethod* callee, BlockBegin* continuation); |
duke@435 | 334 | void push_scope_for_jsr(BlockBegin* jsr_continuation, int jsr_dest_bci); |
duke@435 | 335 | void pop_scope(); |
duke@435 | 336 | void pop_scope_for_jsr(); |
duke@435 | 337 | |
duke@435 | 338 | bool append_unsafe_get_obj(ciMethod* callee, BasicType t, bool is_volatile); |
duke@435 | 339 | bool append_unsafe_put_obj(ciMethod* callee, BasicType t, bool is_volatile); |
duke@435 | 340 | bool append_unsafe_get_raw(ciMethod* callee, BasicType t); |
duke@435 | 341 | bool append_unsafe_put_raw(ciMethod* callee, BasicType t); |
duke@435 | 342 | bool append_unsafe_prefetch(ciMethod* callee, bool is_store, bool is_static); |
duke@435 | 343 | void append_unsafe_CAS(ciMethod* callee); |
duke@435 | 344 | |
duke@435 | 345 | NOT_PRODUCT(void print_inline_result(ciMethod* callee, bool res);) |
duke@435 | 346 | |
duke@435 | 347 | // methodDataOop profiling helpers |
duke@435 | 348 | void profile_call(Value recv, ciKlass* predicted_holder); |
duke@435 | 349 | void profile_invocation(ciMethod* method); |
duke@435 | 350 | void profile_bci(int bci); |
duke@435 | 351 | |
duke@435 | 352 | // Helpers for generation of profile information |
duke@435 | 353 | bool profile_branches() { |
duke@435 | 354 | return _compilation->env()->comp_level() == CompLevel_fast_compile && |
duke@435 | 355 | Tier1UpdateMethodData && Tier1ProfileBranches; |
duke@435 | 356 | } |
duke@435 | 357 | bool profile_calls() { |
duke@435 | 358 | return _compilation->env()->comp_level() == CompLevel_fast_compile && |
duke@435 | 359 | Tier1UpdateMethodData && Tier1ProfileCalls; |
duke@435 | 360 | } |
duke@435 | 361 | bool profile_inlined_calls() { |
duke@435 | 362 | return profile_calls() && Tier1ProfileInlinedCalls; |
duke@435 | 363 | } |
duke@435 | 364 | bool profile_checkcasts() { |
duke@435 | 365 | return _compilation->env()->comp_level() == CompLevel_fast_compile && |
duke@435 | 366 | Tier1UpdateMethodData && Tier1ProfileCheckcasts; |
duke@435 | 367 | } |
duke@435 | 368 | |
duke@435 | 369 | public: |
duke@435 | 370 | NOT_PRODUCT(void print_stats();) |
duke@435 | 371 | |
duke@435 | 372 | // initialization |
duke@435 | 373 | static void initialize(); |
duke@435 | 374 | |
duke@435 | 375 | // public |
duke@435 | 376 | static bool can_trap(ciMethod* method, Bytecodes::Code code) { |
duke@435 | 377 | assert(0 <= code && code < Bytecodes::number_of_java_codes, "illegal bytecode"); |
duke@435 | 378 | if (_can_trap[code]) return true; |
duke@435 | 379 | // special handling for finalizer registration |
duke@435 | 380 | return code == Bytecodes::_return && method->intrinsic_id() == vmIntrinsics::_Object_init; |
duke@435 | 381 | } |
duke@435 | 382 | |
duke@435 | 383 | // creation |
duke@435 | 384 | GraphBuilder(Compilation* compilation, IRScope* scope); |
duke@435 | 385 | static void sort_top_into_worklist(BlockList* worklist, BlockBegin* top); |
duke@435 | 386 | |
duke@435 | 387 | BlockBegin* start() const { return _start; } |
duke@435 | 388 | }; |