1 /*
2 * Copyright (c) 1997, 2021, 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 #ifndef SHARE_OPTO_COMPILE_HPP
26 #define SHARE_OPTO_COMPILE_HPP
27
28 #include "asm/codeBuffer.hpp"
29 #include "ci/compilerInterface.hpp"
30 #include "code/debugInfoRec.hpp"
31 #include "compiler/compiler_globals.hpp"
32 #include "compiler/compilerOracle.hpp"
33 #include "compiler/compileBroker.hpp"
34 #include "compiler/compilerEvent.hpp"
35 #include "libadt/dict.hpp"
36 #include "libadt/vectset.hpp"
37 #include "memory/resourceArea.hpp"
38 #include "oops/methodData.hpp"
39 #include "opto/idealGraphPrinter.hpp"
40 #include "opto/phasetype.hpp"
41 #include "opto/phase.hpp"
42 #include "opto/regmask.hpp"
43 #include "runtime/deoptimization.hpp"
44 #include "runtime/sharedRuntime.hpp"
45 #include "runtime/timerTrace.hpp"
46 #include "runtime/vmThread.hpp"
47 #include "utilities/ticks.hpp"
48
49 class AbstractLockNode;
50 class AddPNode;
51 class Block;
52 class Bundle;
53 class CallGenerator;
54 class CloneMap;
55 class ConnectionGraph;
56 class IdealGraphPrinter;
57 class InlineTree;
58 class Int_Array;
59 class Matcher;
60 class MachConstantNode;
61 class MachConstantBaseNode;
62 class MachNode;
63 class MachOper;
64 class MachSafePointNode;
65 class Node;
66 class Node_Array;
67 class Node_List;
68 class Node_Notes;
69 class NodeCloneInfo;
70 class OptoReg;
71 class PhaseCFG;
72 class PhaseGVN;
73 class PhaseIterGVN;
74 class PhaseRegAlloc;
75 class PhaseCCP;
76 class PhaseOutput;
77 class RootNode;
78 class relocInfo;
79 class Scope;
80 class StartNode;
81 class SafePointNode;
82 class JVMState;
83 class Type;
84 class TypeData;
85 class TypeInt;
86 class TypeInteger;
87 class TypePtr;
88 class TypeOopPtr;
89 class TypeFunc;
90 class TypeVect;
91 class Unique_Node_List;
92 class nmethod;
93 class Node_Stack;
94 struct Final_Reshape_Counts;
95
96 enum LoopOptsMode {
97 LoopOptsDefault,
98 LoopOptsNone,
99 LoopOptsMaxUnroll,
100 LoopOptsShenandoahExpand,
101 LoopOptsShenandoahPostExpand,
102 LoopOptsSkipSplitIf,
103 LoopOptsVerify
104 };
105
106 typedef unsigned int node_idx_t;
107 class NodeCloneInfo {
108 private:
109 uint64_t _idx_clone_orig;
110 public:
111
112 void set_idx(node_idx_t idx) {
113 _idx_clone_orig = (_idx_clone_orig & CONST64(0xFFFFFFFF00000000)) | idx;
114 }
115 node_idx_t idx() const { return (node_idx_t)(_idx_clone_orig & 0xFFFFFFFF); }
116
117 void set_gen(int generation) {
118 uint64_t g = (uint64_t)generation << 32;
119 _idx_clone_orig = (_idx_clone_orig & 0xFFFFFFFF) | g;
120 }
121 int gen() const { return (int)(_idx_clone_orig >> 32); }
122
123 void set(uint64_t x) { _idx_clone_orig = x; }
124 void set(node_idx_t x, int g) { set_idx(x); set_gen(g); }
125 uint64_t get() const { return _idx_clone_orig; }
126
127 NodeCloneInfo(uint64_t idx_clone_orig) : _idx_clone_orig(idx_clone_orig) {}
128 NodeCloneInfo(node_idx_t x, int g) : _idx_clone_orig(0) { set(x, g); }
129
130 void dump() const;
131 };
132
133 class CloneMap {
134 friend class Compile;
135 private:
136 bool _debug;
137 Dict* _dict;
138 int _clone_idx; // current cloning iteration/generation in loop unroll
139 public:
140 void* _2p(node_idx_t key) const { return (void*)(intptr_t)key; } // 2 conversion functions to make gcc happy
141 node_idx_t _2_node_idx_t(const void* k) const { return (node_idx_t)(intptr_t)k; }
142 Dict* dict() const { return _dict; }
143 void insert(node_idx_t key, uint64_t val) { assert(_dict->operator[](_2p(key)) == NULL, "key existed"); _dict->Insert(_2p(key), (void*)val); }
144 void insert(node_idx_t key, NodeCloneInfo& ci) { insert(key, ci.get()); }
145 void remove(node_idx_t key) { _dict->Delete(_2p(key)); }
146 uint64_t value(node_idx_t key) const { return (uint64_t)_dict->operator[](_2p(key)); }
147 node_idx_t idx(node_idx_t key) const { return NodeCloneInfo(value(key)).idx(); }
148 int gen(node_idx_t key) const { return NodeCloneInfo(value(key)).gen(); }
149 int gen(const void* k) const { return gen(_2_node_idx_t(k)); }
150 int max_gen() const;
151 void clone(Node* old, Node* nnn, int gen);
152 void verify_insert_and_clone(Node* old, Node* nnn, int gen);
153 void dump(node_idx_t key) const;
154
155 int clone_idx() const { return _clone_idx; }
156 void set_clone_idx(int x) { _clone_idx = x; }
157 bool is_debug() const { return _debug; }
158 void set_debug(bool debug) { _debug = debug; }
159 static const char* debug_option_name;
160
161 bool same_idx(node_idx_t k1, node_idx_t k2) const { return idx(k1) == idx(k2); }
162 bool same_gen(node_idx_t k1, node_idx_t k2) const { return gen(k1) == gen(k2); }
163 };
164
165 class Options {
166 friend class Compile;
167 friend class VMStructs;
168 private:
169 const bool _subsume_loads; // Load can be matched as part of a larger op.
170 const bool _do_escape_analysis; // Do escape analysis.
171 const bool _eliminate_boxing; // Do boxing elimination.
172 const bool _do_locks_coarsening; // Do locks coarsening
173 const bool _install_code; // Install the code that was compiled
174 public:
175 Options(bool subsume_loads, bool do_escape_analysis,
176 bool eliminate_boxing, bool do_locks_coarsening,
177 bool install_code) :
178 _subsume_loads(subsume_loads),
179 _do_escape_analysis(do_escape_analysis),
180 _eliminate_boxing(eliminate_boxing),
181 _do_locks_coarsening(do_locks_coarsening),
182 _install_code(install_code) {
183 }
184
185 static Options for_runtime_stub() {
186 return Options(
187 /* subsume_loads = */ true,
188 /* do_escape_analysis = */ false,
189 /* eliminate_boxing = */ false,
190 /* do_lock_coarsening = */ false,
191 /* install_code = */ true
192 );
193 }
194 };
195
196 //------------------------------Compile----------------------------------------
197 // This class defines a top-level Compiler invocation.
198
199 class Compile : public Phase {
200 friend class VMStructs;
201
202 public:
203 // Fixed alias indexes. (See also MergeMemNode.)
204 enum {
205 AliasIdxTop = 1, // pseudo-index, aliases to nothing (used as sentinel value)
206 AliasIdxBot = 2, // pseudo-index, aliases to everything
207 AliasIdxRaw = 3 // hard-wired index for TypeRawPtr::BOTTOM
208 };
209
210 // Variant of TraceTime(NULL, &_t_accumulator, CITime);
211 // Integrated with logging. If logging is turned on, and CITimeVerbose is true,
212 // then brackets are put into the log, with time stamps and node counts.
213 // (The time collection itself is always conditionalized on CITime.)
214 class TracePhase : public TraceTime {
215 private:
216 Compile* C;
217 CompileLog* _log;
218 const char* _phase_name;
219 bool _dolog;
220 public:
221 TracePhase(const char* name, elapsedTimer* accumulator);
222 ~TracePhase();
223 };
224
225 // Information per category of alias (memory slice)
226 class AliasType {
227 private:
228 friend class Compile;
229
230 int _index; // unique index, used with MergeMemNode
231 const TypePtr* _adr_type; // normalized address type
232 ciField* _field; // relevant instance field, or null if none
233 const Type* _element; // relevant array element type, or null if none
234 bool _is_rewritable; // false if the memory is write-once only
235 int _general_index; // if this is type is an instance, the general
236 // type that this is an instance of
237
238 void Init(int i, const TypePtr* at);
239
240 public:
241 int index() const { return _index; }
242 const TypePtr* adr_type() const { return _adr_type; }
243 ciField* field() const { return _field; }
244 const Type* element() const { return _element; }
245 bool is_rewritable() const { return _is_rewritable; }
246 bool is_volatile() const { return (_field ? _field->is_volatile() : false); }
247 int general_index() const { return (_general_index != 0) ? _general_index : _index; }
248
249 void set_rewritable(bool z) { _is_rewritable = z; }
250 void set_field(ciField* f) {
251 assert(!_field,"");
252 _field = f;
253 if (f->is_final() || f->is_stable()) {
254 // In the case of @Stable, multiple writes are possible but may be assumed to be no-ops.
255 _is_rewritable = false;
256 }
257 }
258 void set_element(const Type* e) {
259 assert(_element == NULL, "");
260 _element = e;
261 }
262
263 BasicType basic_type() const;
264
265 void print_on(outputStream* st) PRODUCT_RETURN;
266 };
267
268 enum {
269 logAliasCacheSize = 6,
270 AliasCacheSize = (1<<logAliasCacheSize)
271 };
272 struct AliasCacheEntry { const TypePtr* _adr_type; int _index; }; // simple duple type
273 enum {
274 trapHistLength = MethodData::_trap_hist_limit
275 };
276
277 private:
278 // Fixed parameters to this compilation.
279 const int _compile_id;
280 const Options _options; // Compilation options
281 ciMethod* _method; // The method being compiled.
282 int _entry_bci; // entry bci for osr methods.
283 const TypeFunc* _tf; // My kind of signature
284 InlineTree* _ilt; // Ditto (temporary).
285 address _stub_function; // VM entry for stub being compiled, or NULL
286 const char* _stub_name; // Name of stub or adapter being compiled, or NULL
287 address _stub_entry_point; // Compile code entry for generated stub, or NULL
288
289 // Control of this compilation.
290 int _max_inline_size; // Max inline size for this compilation
291 int _freq_inline_size; // Max hot method inline size for this compilation
292 int _fixed_slots; // count of frame slots not allocated by the register
293 // allocator i.e. locks, original deopt pc, etc.
294 uintx _max_node_limit; // Max unique node count during a single compilation.
295
296 bool _post_loop_opts_phase; // Loop opts are finished.
297
298 int _major_progress; // Count of something big happening
299 bool _inlining_progress; // progress doing incremental inlining?
300 bool _inlining_incrementally;// Are we doing incremental inlining (post parse)
301 bool _do_cleanup; // Cleanup is needed before proceeding with incremental inlining
302 bool _has_loops; // True if the method _may_ have some loops
303 bool _has_split_ifs; // True if the method _may_ have some split-if
304 bool _has_unsafe_access; // True if the method _may_ produce faults in unsafe loads or stores.
305 bool _has_stringbuilder; // True StringBuffers or StringBuilders are allocated
306 bool _has_boxed_value; // True if a boxed object is allocated
307 bool _has_reserved_stack_access; // True if the method or an inlined method is annotated with ReservedStackAccess
308 uint _max_vector_size; // Maximum size of generated vectors
309 bool _clear_upper_avx; // Clear upper bits of ymm registers using vzeroupper
310 uint _trap_hist[trapHistLength]; // Cumulative traps
311 bool _trap_can_recompile; // Have we emitted a recompiling trap?
312 uint _decompile_count; // Cumulative decompilation counts.
313 bool _do_inlining; // True if we intend to do inlining
314 bool _do_scheduling; // True if we intend to do scheduling
315 bool _do_freq_based_layout; // True if we intend to do frequency based block layout
316 bool _do_vector_loop; // True if allowed to execute loop in parallel iterations
317 bool _use_cmove; // True if CMove should be used without profitability analysis
318 bool _age_code; // True if we need to profile code age (decrement the aging counter)
319 int _AliasLevel; // Locally-adjusted version of AliasLevel flag.
320 bool _print_assembly; // True if we should dump assembly code for this compilation
321 bool _print_inlining; // True if we should print inlining for this compilation
322 bool _print_intrinsics; // True if we should print intrinsics for this compilation
323 #ifndef PRODUCT
324 uint _igv_idx; // Counter for IGV node identifiers
325 bool _trace_opto_output;
326 bool _print_ideal;
327 bool _parsed_irreducible_loop; // True if ciTypeFlow detected irreducible loops during parsing
328 #endif
329 bool _has_irreducible_loop; // Found irreducible loops
330 // JSR 292
331 bool _has_method_handle_invokes; // True if this method has MethodHandle invokes.
332 RTMState _rtm_state; // State of Restricted Transactional Memory usage
333 int _loop_opts_cnt; // loop opts round
334 bool _clinit_barrier_on_entry; // True if clinit barrier is needed on nmethod entry
335 uint _stress_seed; // Seed for stress testing
336
337 // Compilation environment.
338 Arena _comp_arena; // Arena with lifetime equivalent to Compile
339 void* _barrier_set_state; // Potential GC barrier state for Compile
340 ciEnv* _env; // CI interface
341 DirectiveSet* _directive; // Compiler directive
342 CompileLog* _log; // from CompilerThread
343 const char* _failure_reason; // for record_failure/failing pattern
344 GrowableArray<CallGenerator*> _intrinsics; // List of intrinsics.
345 GrowableArray<Node*> _macro_nodes; // List of nodes which need to be expanded before matching.
346 GrowableArray<Node*> _predicate_opaqs; // List of Opaque1 nodes for the loop predicates.
347 GrowableArray<Node*> _skeleton_predicate_opaqs; // List of Opaque4 nodes for the loop skeleton predicates.
348 GrowableArray<Node*> _expensive_nodes; // List of nodes that are expensive to compute and that we'd better not let the GVN freely common
349 GrowableArray<Node*> _for_post_loop_igvn; // List of nodes for IGVN after loop opts are over
350 GrowableArray<Node_List*> _coarsened_locks; // List of coarsened Lock and Unlock nodes
351 ConnectionGraph* _congraph;
352 #ifndef PRODUCT
353 IdealGraphPrinter* _printer;
354 static IdealGraphPrinter* _debug_file_printer;
355 static IdealGraphPrinter* _debug_network_printer;
356 #endif
357
358
359 // Node management
360 uint _unique; // Counter for unique Node indices
361 VectorSet _dead_node_list; // Set of dead nodes
362 uint _dead_node_count; // Number of dead nodes; VectorSet::Size() is O(N).
363 // So use this to keep count and make the call O(1).
364 DEBUG_ONLY(Unique_Node_List* _modified_nodes;) // List of nodes which inputs were modified
365 DEBUG_ONLY(bool _phase_optimize_finished;) // Used for live node verification while creating new nodes
366
367 debug_only(static int _debug_idx;) // Monotonic counter (not reset), use -XX:BreakAtNode=<idx>
368 Arena _node_arena; // Arena for new-space Nodes
369 Arena _old_arena; // Arena for old-space Nodes, lifetime during xform
370 RootNode* _root; // Unique root of compilation, or NULL after bail-out.
371 Node* _top; // Unique top node. (Reset by various phases.)
372
373 Node* _immutable_memory; // Initial memory state
374
375 Node* _recent_alloc_obj;
376 Node* _recent_alloc_ctl;
377
378 // Constant table
379 MachConstantBaseNode* _mach_constant_base_node; // Constant table base node singleton.
380
381
382 // Blocked array of debugging and profiling information,
383 // tracked per node.
384 enum { _log2_node_notes_block_size = 8,
385 _node_notes_block_size = (1<<_log2_node_notes_block_size)
386 };
387 GrowableArray<Node_Notes*>* _node_note_array;
388 Node_Notes* _default_node_notes; // default notes for new nodes
389
390 // After parsing and every bulk phase we hang onto the Root instruction.
391 // The RootNode instruction is where the whole program begins. It produces
392 // the initial Control and BOTTOM for everybody else.
393
394 // Type management
395 Arena _Compile_types; // Arena for all types
396 Arena* _type_arena; // Alias for _Compile_types except in Initialize_shared()
397 Dict* _type_dict; // Intern table
398 CloneMap _clone_map; // used for recording history of cloned nodes
399 size_t _type_last_size; // Last allocation size (see Type::operator new/delete)
400 ciMethod* _last_tf_m; // Cache for
401 const TypeFunc* _last_tf; // TypeFunc::make
402 AliasType** _alias_types; // List of alias types seen so far.
403 int _num_alias_types; // Logical length of _alias_types
404 int _max_alias_types; // Physical length of _alias_types
405 AliasCacheEntry _alias_cache[AliasCacheSize]; // Gets aliases w/o data structure walking
406
407 // Parsing, optimization
408 PhaseGVN* _initial_gvn; // Results of parse-time PhaseGVN
409 Unique_Node_List* _for_igvn; // Initial work-list for next round of Iterative GVN
410
411 GrowableArray<CallGenerator*> _late_inlines; // List of CallGenerators to be revisited after main parsing has finished.
412 GrowableArray<CallGenerator*> _string_late_inlines; // same but for string operations
413 GrowableArray<CallGenerator*> _boxing_late_inlines; // same but for boxing operations
414
415 GrowableArray<CallGenerator*> _vector_reboxing_late_inlines; // same but for vector reboxing operations
416
417 int _late_inlines_pos; // Where in the queue should the next late inlining candidate go (emulate depth first inlining)
418 uint _number_of_mh_late_inlines; // number of method handle late inlining still pending
419
420 GrowableArray<RuntimeStub*> _native_invokers;
421
422 // Inlining may not happen in parse order which would make
423 // PrintInlining output confusing. Keep track of PrintInlining
424 // pieces in order.
425 class PrintInliningBuffer : public CHeapObj<mtCompiler> {
426 private:
427 CallGenerator* _cg;
428 stringStream _ss;
429 static const size_t default_stream_buffer_size = 128;
430
431 public:
432 PrintInliningBuffer()
433 : _cg(NULL), _ss(default_stream_buffer_size) {}
434
435 stringStream* ss() { return &_ss; }
436 CallGenerator* cg() { return _cg; }
437 void set_cg(CallGenerator* cg) { _cg = cg; }
438 };
439
440 stringStream* _print_inlining_stream;
441 GrowableArray<PrintInliningBuffer*>* _print_inlining_list;
442 int _print_inlining_idx;
443 char* _print_inlining_output;
444
445 // Only keep nodes in the expensive node list that need to be optimized
446 void cleanup_expensive_nodes(PhaseIterGVN &igvn);
447 // Use for sorting expensive nodes to bring similar nodes together
448 static int cmp_expensive_nodes(Node** n1, Node** n2);
449 // Expensive nodes list already sorted?
450 bool expensive_nodes_sorted() const;
451 // Remove the speculative part of types and clean up the graph
452 void remove_speculative_types(PhaseIterGVN &igvn);
453
454 void* _replay_inline_data; // Pointer to data loaded from file
455
456 void print_inlining_stream_free();
457 void print_inlining_init();
458 void print_inlining_reinit();
459 void print_inlining_commit();
460 void print_inlining_push();
461 PrintInliningBuffer* print_inlining_current();
462
463 void log_late_inline_failure(CallGenerator* cg, const char* msg);
464 DEBUG_ONLY(bool _exception_backedge;)
465
466 public:
467
468 void* barrier_set_state() const { return _barrier_set_state; }
469
470 outputStream* print_inlining_stream() const {
471 assert(print_inlining() || print_intrinsics(), "PrintInlining off?");
472 return _print_inlining_stream;
473 }
474
475 void print_inlining_update(CallGenerator* cg);
476 void print_inlining_update_delayed(CallGenerator* cg);
477 void print_inlining_move_to(CallGenerator* cg);
478 void print_inlining_assert_ready();
479 void print_inlining_reset();
480
481 void print_inlining(ciMethod* method, int inline_level, int bci, const char* msg = NULL) {
482 stringStream ss;
483 CompileTask::print_inlining_inner(&ss, method, inline_level, bci, msg);
484 print_inlining_stream()->print("%s", ss.as_string());
485 }
486
487 #ifndef PRODUCT
488 IdealGraphPrinter* printer() { return _printer; }
489 #endif
490
491 void log_late_inline(CallGenerator* cg);
492 void log_inline_id(CallGenerator* cg);
493 void log_inline_failure(const char* msg);
494
495 void* replay_inline_data() const { return _replay_inline_data; }
496
497 // Dump inlining replay data to the stream.
498 void dump_inline_data(outputStream* out);
499
500 private:
501 // Matching, CFG layout, allocation, code generation
502 PhaseCFG* _cfg; // Results of CFG finding
503 int _java_calls; // Number of java calls in the method
504 int _inner_loops; // Number of inner loops in the method
505 Matcher* _matcher; // Engine to map ideal to machine instructions
506 PhaseRegAlloc* _regalloc; // Results of register allocation.
507 RegMask _FIRST_STACK_mask; // All stack slots usable for spills (depends on frame layout)
508 Arena* _indexSet_arena; // control IndexSet allocation within PhaseChaitin
509 void* _indexSet_free_block_list; // free list of IndexSet bit blocks
510 int _interpreter_frame_size;
511
512 PhaseOutput* _output;
513
514 public:
515 // Accessors
516
517 // The Compile instance currently active in this (compiler) thread.
518 static Compile* current() {
519 return (Compile*) ciEnv::current()->compiler_data();
520 }
521
522 int interpreter_frame_size() const { return _interpreter_frame_size; }
523
524 PhaseOutput* output() const { return _output; }
525 void set_output(PhaseOutput* o) { _output = o; }
526
527 // ID for this compilation. Useful for setting breakpoints in the debugger.
528 int compile_id() const { return _compile_id; }
529 DirectiveSet* directive() const { return _directive; }
530
531 // Does this compilation allow instructions to subsume loads? User
532 // instructions that subsume a load may result in an unschedulable
533 // instruction sequence.
534 bool subsume_loads() const { return _options._subsume_loads; }
535 /** Do escape analysis. */
536 bool do_escape_analysis() const { return _options._do_escape_analysis; }
537 /** Do boxing elimination. */
538 bool eliminate_boxing() const { return _options._eliminate_boxing; }
539 /** Do aggressive boxing elimination. */
540 bool aggressive_unboxing() const { return _options._eliminate_boxing && AggressiveUnboxing; }
541 bool should_install_code() const { return _options._install_code; }
542 /** Do locks coarsening. */
543 bool do_locks_coarsening() const { return _options._do_locks_coarsening; }
544
545 // Other fixed compilation parameters.
546 ciMethod* method() const { return _method; }
547 int entry_bci() const { return _entry_bci; }
548 bool is_osr_compilation() const { return _entry_bci != InvocationEntryBci; }
549 bool is_method_compilation() const { return (_method != NULL && !_method->flags().is_native()); }
550 const TypeFunc* tf() const { assert(_tf!=NULL, ""); return _tf; }
551 void init_tf(const TypeFunc* tf) { assert(_tf==NULL, ""); _tf = tf; }
552 InlineTree* ilt() const { return _ilt; }
553 address stub_function() const { return _stub_function; }
554 const char* stub_name() const { return _stub_name; }
555 address stub_entry_point() const { return _stub_entry_point; }
556 void set_stub_entry_point(address z) { _stub_entry_point = z; }
557
558 // Control of this compilation.
559 int fixed_slots() const { assert(_fixed_slots >= 0, ""); return _fixed_slots; }
560 void set_fixed_slots(int n) { _fixed_slots = n; }
561 int major_progress() const { return _major_progress; }
562 void set_inlining_progress(bool z) { _inlining_progress = z; }
563 int inlining_progress() const { return _inlining_progress; }
564 void set_inlining_incrementally(bool z) { _inlining_incrementally = z; }
565 int inlining_incrementally() const { return _inlining_incrementally; }
566 void set_do_cleanup(bool z) { _do_cleanup = z; }
567 int do_cleanup() const { return _do_cleanup; }
568 void set_major_progress() { _major_progress++; }
569 void restore_major_progress(int progress) { _major_progress += progress; }
570 void clear_major_progress() { _major_progress = 0; }
571 int max_inline_size() const { return _max_inline_size; }
572 void set_freq_inline_size(int n) { _freq_inline_size = n; }
573 int freq_inline_size() const { return _freq_inline_size; }
574 void set_max_inline_size(int n) { _max_inline_size = n; }
575 bool has_loops() const { return _has_loops; }
576 void set_has_loops(bool z) { _has_loops = z; }
577 bool has_split_ifs() const { return _has_split_ifs; }
578 void set_has_split_ifs(bool z) { _has_split_ifs = z; }
579 bool has_unsafe_access() const { return _has_unsafe_access; }
580 void set_has_unsafe_access(bool z) { _has_unsafe_access = z; }
581 bool has_stringbuilder() const { return _has_stringbuilder; }
582 void set_has_stringbuilder(bool z) { _has_stringbuilder = z; }
583 bool has_boxed_value() const { return _has_boxed_value; }
584 void set_has_boxed_value(bool z) { _has_boxed_value = z; }
585 bool has_reserved_stack_access() const { return _has_reserved_stack_access; }
586 void set_has_reserved_stack_access(bool z) { _has_reserved_stack_access = z; }
587 uint max_vector_size() const { return _max_vector_size; }
588 void set_max_vector_size(uint s) { _max_vector_size = s; }
589 bool clear_upper_avx() const { return _clear_upper_avx; }
590 void set_clear_upper_avx(bool s) { _clear_upper_avx = s; }
591 void set_trap_count(uint r, uint c) { assert(r < trapHistLength, "oob"); _trap_hist[r] = c; }
592 uint trap_count(uint r) const { assert(r < trapHistLength, "oob"); return _trap_hist[r]; }
593 bool trap_can_recompile() const { return _trap_can_recompile; }
594 void set_trap_can_recompile(bool z) { _trap_can_recompile = z; }
595 uint decompile_count() const { return _decompile_count; }
596 void set_decompile_count(uint c) { _decompile_count = c; }
597 bool allow_range_check_smearing() const;
598 bool do_inlining() const { return _do_inlining; }
599 void set_do_inlining(bool z) { _do_inlining = z; }
600 bool do_scheduling() const { return _do_scheduling; }
601 void set_do_scheduling(bool z) { _do_scheduling = z; }
602 bool do_freq_based_layout() const{ return _do_freq_based_layout; }
603 void set_do_freq_based_layout(bool z){ _do_freq_based_layout = z; }
604 bool do_vector_loop() const { return _do_vector_loop; }
605 void set_do_vector_loop(bool z) { _do_vector_loop = z; }
606 bool use_cmove() const { return _use_cmove; }
607 void set_use_cmove(bool z) { _use_cmove = z; }
608 bool age_code() const { return _age_code; }
609 void set_age_code(bool z) { _age_code = z; }
610 int AliasLevel() const { return _AliasLevel; }
611 bool print_assembly() const { return _print_assembly; }
612 void set_print_assembly(bool z) { _print_assembly = z; }
613 bool print_inlining() const { return _print_inlining; }
614 void set_print_inlining(bool z) { _print_inlining = z; }
615 bool print_intrinsics() const { return _print_intrinsics; }
616 void set_print_intrinsics(bool z) { _print_intrinsics = z; }
617 RTMState rtm_state() const { return _rtm_state; }
618 void set_rtm_state(RTMState s) { _rtm_state = s; }
619 bool use_rtm() const { return (_rtm_state & NoRTM) == 0; }
620 bool profile_rtm() const { return _rtm_state == ProfileRTM; }
621 uint max_node_limit() const { return (uint)_max_node_limit; }
622 void set_max_node_limit(uint n) { _max_node_limit = n; }
623 bool clinit_barrier_on_entry() { return _clinit_barrier_on_entry; }
624 void set_clinit_barrier_on_entry(bool z) { _clinit_barrier_on_entry = z; }
625
626 // check the CompilerOracle for special behaviours for this compile
627 bool method_has_option(enum CompileCommand option) {
628 return method() != NULL && method()->has_option(option);
629 }
630
631 #ifndef PRODUCT
632 uint next_igv_idx() { return _igv_idx++; }
633 bool trace_opto_output() const { return _trace_opto_output; }
634 bool print_ideal() const { return _print_ideal; }
635 bool parsed_irreducible_loop() const { return _parsed_irreducible_loop; }
636 void set_parsed_irreducible_loop(bool z) { _parsed_irreducible_loop = z; }
637 int _in_dump_cnt; // Required for dumping ir nodes.
638 #endif
639 bool has_irreducible_loop() const { return _has_irreducible_loop; }
640 void set_has_irreducible_loop(bool z) { _has_irreducible_loop = z; }
641
642 // JSR 292
643 bool has_method_handle_invokes() const { return _has_method_handle_invokes; }
644 void set_has_method_handle_invokes(bool z) { _has_method_handle_invokes = z; }
645
646 Ticks _latest_stage_start_counter;
647
648 void begin_method(int level = 1) {
649 #ifndef PRODUCT
650 if (_method != NULL && should_print(level)) {
651 _printer->begin_method();
652 }
653 #endif
654 C->_latest_stage_start_counter.stamp();
655 }
656
657 bool should_print(int level = 1) {
658 #ifndef PRODUCT
659 if (PrintIdealGraphLevel < 0) { // disabled by the user
660 return false;
661 }
662
663 bool need = directive()->IGVPrintLevelOption >= level;
664 if (need && !_printer) {
665 _printer = IdealGraphPrinter::printer();
666 assert(_printer != NULL, "_printer is NULL when we need it!");
667 _printer->set_compile(this);
668 }
669 return need;
670 #else
671 return false;
672 #endif
673 }
674
675 void print_method(CompilerPhaseType cpt, const char *name, int level = 1);
676 void print_method(CompilerPhaseType cpt, int level = 1, int idx = 0);
677 void print_method(CompilerPhaseType cpt, Node* n, int level = 3);
678
679 #ifndef PRODUCT
680 void igv_print_method_to_file(const char* phase_name = "Debug", bool append = false);
681 void igv_print_method_to_network(const char* phase_name = "Debug");
682 static IdealGraphPrinter* debug_file_printer() { return _debug_file_printer; }
683 static IdealGraphPrinter* debug_network_printer() { return _debug_network_printer; }
684 #endif
685
686 void end_method(int level = 1);
687
688 int macro_count() const { return _macro_nodes.length(); }
689 int predicate_count() const { return _predicate_opaqs.length(); }
690 int skeleton_predicate_count() const { return _skeleton_predicate_opaqs.length(); }
691 int expensive_count() const { return _expensive_nodes.length(); }
692 int coarsened_count() const { return _coarsened_locks.length(); }
693
694 Node* macro_node(int idx) const { return _macro_nodes.at(idx); }
695 Node* predicate_opaque1_node(int idx) const { return _predicate_opaqs.at(idx); }
696 Node* skeleton_predicate_opaque4_node(int idx) const { return _skeleton_predicate_opaqs.at(idx); }
697 Node* expensive_node(int idx) const { return _expensive_nodes.at(idx); }
698
699 ConnectionGraph* congraph() { return _congraph;}
700 void set_congraph(ConnectionGraph* congraph) { _congraph = congraph;}
701 void add_macro_node(Node * n) {
702 //assert(n->is_macro(), "must be a macro node");
703 assert(!_macro_nodes.contains(n), "duplicate entry in expand list");
704 _macro_nodes.append(n);
705 }
706 void remove_macro_node(Node* n) {
707 // this function may be called twice for a node so we can only remove it
708 // if it's still existing.
709 _macro_nodes.remove_if_existing(n);
710 // remove from _predicate_opaqs list also if it is there
711 if (predicate_count() > 0) {
712 _predicate_opaqs.remove_if_existing(n);
713 }
714 // Remove from coarsened locks list if present
715 if (coarsened_count() > 0) {
716 remove_coarsened_lock(n);
717 }
718 }
719 void add_expensive_node(Node* n);
720 void remove_expensive_node(Node* n) {
721 _expensive_nodes.remove_if_existing(n);
722 }
723 void add_predicate_opaq(Node* n) {
724 assert(!_predicate_opaqs.contains(n), "duplicate entry in predicate opaque1");
725 assert(_macro_nodes.contains(n), "should have already been in macro list");
726 _predicate_opaqs.append(n);
727 }
728 void add_skeleton_predicate_opaq(Node* n) {
729 assert(!_skeleton_predicate_opaqs.contains(n), "duplicate entry in skeleton predicate opaque4 list");
730 _skeleton_predicate_opaqs.append(n);
731 }
732 void remove_skeleton_predicate_opaq(Node* n) {
733 if (skeleton_predicate_count() > 0) {
734 _skeleton_predicate_opaqs.remove_if_existing(n);
735 }
736 }
737 void add_coarsened_locks(GrowableArray<AbstractLockNode*>& locks);
738 void remove_coarsened_lock(Node* n);
739 bool coarsened_locks_consistent();
740
741 bool post_loop_opts_phase() { return _post_loop_opts_phase; }
742 void set_post_loop_opts_phase() { _post_loop_opts_phase = true; }
743 void reset_post_loop_opts_phase() { _post_loop_opts_phase = false; }
744
745 void record_for_post_loop_opts_igvn(Node* n);
746 void remove_from_post_loop_opts_igvn(Node* n);
747 void process_for_post_loop_opts_igvn(PhaseIterGVN& igvn);
748
749 void sort_macro_nodes();
750
751 // remove the opaque nodes that protect the predicates so that the unused checks and
752 // uncommon traps will be eliminated from the graph.
753 void cleanup_loop_predicates(PhaseIterGVN &igvn);
754 bool is_predicate_opaq(Node* n) {
755 return _predicate_opaqs.contains(n);
756 }
757
758 // Are there candidate expensive nodes for optimization?
759 bool should_optimize_expensive_nodes(PhaseIterGVN &igvn);
760 // Check whether n1 and n2 are similar
761 static int cmp_expensive_nodes(Node* n1, Node* n2);
762 // Sort expensive nodes to locate similar expensive nodes
763 void sort_expensive_nodes();
764
765 // Compilation environment.
766 Arena* comp_arena() { return &_comp_arena; }
767 ciEnv* env() const { return _env; }
768 CompileLog* log() const { return _log; }
769 bool failing() const { return _env->failing() || _failure_reason != NULL; }
770 const char* failure_reason() const { return (_env->failing()) ? _env->failure_reason() : _failure_reason; }
771
772 bool failure_reason_is(const char* r) const {
773 return (r == _failure_reason) || (r != NULL && _failure_reason != NULL && strcmp(r, _failure_reason) == 0);
774 }
775
776 void record_failure(const char* reason);
777 void record_method_not_compilable(const char* reason) {
778 env()->record_method_not_compilable(reason);
779 // Record failure reason.
780 record_failure(reason);
781 }
782 bool check_node_count(uint margin, const char* reason) {
783 if (live_nodes() + margin > max_node_limit()) {
784 record_method_not_compilable(reason);
785 return true;
786 } else {
787 return false;
788 }
789 }
790
791 // Node management
792 uint unique() const { return _unique; }
793 uint next_unique() { return _unique++; }
794 void set_unique(uint i) { _unique = i; }
795 static int debug_idx() { return debug_only(_debug_idx)+0; }
796 static void set_debug_idx(int i) { debug_only(_debug_idx = i); }
797 Arena* node_arena() { return &_node_arena; }
798 Arena* old_arena() { return &_old_arena; }
799 RootNode* root() const { return _root; }
800 void set_root(RootNode* r) { _root = r; }
801 StartNode* start() const; // (Derived from root.)
802 void init_start(StartNode* s);
803 Node* immutable_memory();
804
805 Node* recent_alloc_ctl() const { return _recent_alloc_ctl; }
806 Node* recent_alloc_obj() const { return _recent_alloc_obj; }
807 void set_recent_alloc(Node* ctl, Node* obj) {
808 _recent_alloc_ctl = ctl;
809 _recent_alloc_obj = obj;
810 }
811 void record_dead_node(uint idx) { if (_dead_node_list.test_set(idx)) return;
812 _dead_node_count++;
813 }
814 void reset_dead_node_list() { _dead_node_list.reset();
815 _dead_node_count = 0;
816 }
817 uint live_nodes() const {
818 int val = _unique - _dead_node_count;
819 assert (val >= 0, "number of tracked dead nodes %d more than created nodes %d", _unique, _dead_node_count);
820 return (uint) val;
821 }
822 #ifdef ASSERT
823 void set_phase_optimize_finished() { _phase_optimize_finished = true; }
824 bool phase_optimize_finished() const { return _phase_optimize_finished; }
825 uint count_live_nodes_by_graph_walk();
826 void print_missing_nodes();
827 #endif
828
829 // Record modified nodes to check that they are put on IGVN worklist
830 void record_modified_node(Node* n) NOT_DEBUG_RETURN;
831 void remove_modified_node(Node* n) NOT_DEBUG_RETURN;
832 DEBUG_ONLY( Unique_Node_List* modified_nodes() const { return _modified_nodes; } )
833
834 MachConstantBaseNode* mach_constant_base_node();
835 bool has_mach_constant_base_node() const { return _mach_constant_base_node != NULL; }
836 // Generated by adlc, true if CallNode requires MachConstantBase.
837 bool needs_deep_clone_jvms();
838
839 // Handy undefined Node
840 Node* top() const { return _top; }
841
842 // these are used by guys who need to know about creation and transformation of top:
843 Node* cached_top_node() { return _top; }
844 void set_cached_top_node(Node* tn);
845
846 GrowableArray<Node_Notes*>* node_note_array() const { return _node_note_array; }
847 void set_node_note_array(GrowableArray<Node_Notes*>* arr) { _node_note_array = arr; }
848 Node_Notes* default_node_notes() const { return _default_node_notes; }
849 void set_default_node_notes(Node_Notes* n) { _default_node_notes = n; }
850
851 Node_Notes* node_notes_at(int idx) {
852 return locate_node_notes(_node_note_array, idx, false);
853 }
854 inline bool set_node_notes_at(int idx, Node_Notes* value);
855
856 // Copy notes from source to dest, if they exist.
857 // Overwrite dest only if source provides something.
858 // Return true if information was moved.
859 bool copy_node_notes_to(Node* dest, Node* source);
860
861 // Workhorse function to sort out the blocked Node_Notes array:
862 inline Node_Notes* locate_node_notes(GrowableArray<Node_Notes*>* arr,
863 int idx, bool can_grow = false);
864
865 void grow_node_notes(GrowableArray<Node_Notes*>* arr, int grow_by);
866
867 // Type management
868 Arena* type_arena() { return _type_arena; }
869 Dict* type_dict() { return _type_dict; }
870 size_t type_last_size() { return _type_last_size; }
871 int num_alias_types() { return _num_alias_types; }
872
873 void init_type_arena() { _type_arena = &_Compile_types; }
874 void set_type_arena(Arena* a) { _type_arena = a; }
875 void set_type_dict(Dict* d) { _type_dict = d; }
876 void set_type_last_size(size_t sz) { _type_last_size = sz; }
877
878 const TypeFunc* last_tf(ciMethod* m) {
879 return (m == _last_tf_m) ? _last_tf : NULL;
880 }
881 void set_last_tf(ciMethod* m, const TypeFunc* tf) {
882 assert(m != NULL || tf == NULL, "");
883 _last_tf_m = m;
884 _last_tf = tf;
885 }
886
887 AliasType* alias_type(int idx) { assert(idx < num_alias_types(), "oob"); return _alias_types[idx]; }
888 AliasType* alias_type(const TypePtr* adr_type, ciField* field = NULL) { return find_alias_type(adr_type, false, field); }
889 bool have_alias_type(const TypePtr* adr_type);
890 AliasType* alias_type(ciField* field);
891
892 int get_alias_index(const TypePtr* at) { return alias_type(at)->index(); }
893 const TypePtr* get_adr_type(uint aidx) { return alias_type(aidx)->adr_type(); }
894 int get_general_index(uint aidx) { return alias_type(aidx)->general_index(); }
895
896 // Building nodes
897 void rethrow_exceptions(JVMState* jvms);
898 void return_values(JVMState* jvms);
899 JVMState* build_start_state(StartNode* start, const TypeFunc* tf);
900
901 // Decide how to build a call.
902 // The profile factor is a discount to apply to this site's interp. profile.
903 CallGenerator* call_generator(ciMethod* call_method, int vtable_index, bool call_does_dispatch,
904 JVMState* jvms, bool allow_inline, float profile_factor, ciKlass* speculative_receiver_type = NULL,
905 bool allow_intrinsics = true);
906 bool should_delay_inlining(ciMethod* call_method, JVMState* jvms) {
907 return should_delay_string_inlining(call_method, jvms) ||
908 should_delay_boxing_inlining(call_method, jvms) ||
909 should_delay_vector_inlining(call_method, jvms);
910 }
911 bool should_delay_string_inlining(ciMethod* call_method, JVMState* jvms);
912 bool should_delay_boxing_inlining(ciMethod* call_method, JVMState* jvms);
913 bool should_delay_vector_inlining(ciMethod* call_method, JVMState* jvms);
914 bool should_delay_vector_reboxing_inlining(ciMethod* call_method, JVMState* jvms);
915
916 // Helper functions to identify inlining potential at call-site
917 ciMethod* optimize_virtual_call(ciMethod* caller, ciInstanceKlass* klass,
918 ciKlass* holder, ciMethod* callee,
919 const TypeOopPtr* receiver_type, bool is_virtual,
920 bool &call_does_dispatch, int &vtable_index,
921 bool check_access = true);
922 ciMethod* optimize_inlining(ciMethod* caller, ciInstanceKlass* klass, ciKlass* holder,
923 ciMethod* callee, const TypeOopPtr* receiver_type,
924 bool check_access = true);
925
926 // Report if there were too many traps at a current method and bci.
927 // Report if a trap was recorded, and/or PerMethodTrapLimit was exceeded.
928 // If there is no MDO at all, report no trap unless told to assume it.
929 bool too_many_traps(ciMethod* method, int bci, Deoptimization::DeoptReason reason);
930 // This version, unspecific to a particular bci, asks if
931 // PerMethodTrapLimit was exceeded for all inlined methods seen so far.
932 bool too_many_traps(Deoptimization::DeoptReason reason,
933 // Privately used parameter for logging:
934 ciMethodData* logmd = NULL);
935 // Report if there were too many recompiles at a method and bci.
936 bool too_many_recompiles(ciMethod* method, int bci, Deoptimization::DeoptReason reason);
937 // Report if there were too many traps or recompiles at a method and bci.
938 bool too_many_traps_or_recompiles(ciMethod* method, int bci, Deoptimization::DeoptReason reason) {
939 return too_many_traps(method, bci, reason) ||
940 too_many_recompiles(method, bci, reason);
941 }
942 // Return a bitset with the reasons where deoptimization is allowed,
943 // i.e., where there were not too many uncommon traps.
944 int _allowed_reasons;
945 int allowed_deopt_reasons() { return _allowed_reasons; }
946 void set_allowed_deopt_reasons();
947
948 // Parsing, optimization
949 PhaseGVN* initial_gvn() { return _initial_gvn; }
950 Unique_Node_List* for_igvn() { return _for_igvn; }
951 inline void record_for_igvn(Node* n); // Body is after class Unique_Node_List.
952 void set_initial_gvn(PhaseGVN *gvn) { _initial_gvn = gvn; }
953 void set_for_igvn(Unique_Node_List *for_igvn) { _for_igvn = for_igvn; }
954
955 // Replace n by nn using initial_gvn, calling hash_delete and
956 // record_for_igvn as needed.
957 void gvn_replace_by(Node* n, Node* nn);
958
959
960 void identify_useful_nodes(Unique_Node_List &useful);
961 void update_dead_node_list(Unique_Node_List &useful);
962 void remove_useless_nodes (Unique_Node_List &useful);
963
964 void remove_useless_node(Node* dead);
965
966 // Record this CallGenerator for inlining at the end of parsing.
967 void add_late_inline(CallGenerator* cg) {
968 _late_inlines.insert_before(_late_inlines_pos, cg);
969 _late_inlines_pos++;
970 }
971
972 void prepend_late_inline(CallGenerator* cg) {
973 _late_inlines.insert_before(0, cg);
974 }
975
976 void add_string_late_inline(CallGenerator* cg) {
977 _string_late_inlines.push(cg);
978 }
979
980 void add_boxing_late_inline(CallGenerator* cg) {
981 _boxing_late_inlines.push(cg);
982 }
983
984 void add_vector_reboxing_late_inline(CallGenerator* cg) {
985 _vector_reboxing_late_inlines.push(cg);
986 }
987
988 void add_native_invoker(RuntimeStub* stub);
989
990 const GrowableArray<RuntimeStub*> native_invokers() const { return _native_invokers; }
991
992 void remove_useless_nodes (GrowableArray<Node*>& node_list, Unique_Node_List &useful);
993
994 void remove_useless_late_inlines(GrowableArray<CallGenerator*>* inlines, Unique_Node_List &useful);
995 void remove_useless_late_inlines(GrowableArray<CallGenerator*>* inlines, Node* dead);
996
997 void remove_useless_coarsened_locks(Unique_Node_List& useful);
998
999 void process_print_inlining();
1000 void dump_print_inlining();
1001
1002 bool over_inlining_cutoff() const {
1003 if (!inlining_incrementally()) {
1004 return unique() > (uint)NodeCountInliningCutoff;
1005 } else {
1006 // Give some room for incremental inlining algorithm to "breathe"
1007 // and avoid thrashing when live node count is close to the limit.
1008 // Keep in mind that live_nodes() isn't accurate during inlining until
1009 // dead node elimination step happens (see Compile::inline_incrementally).
1010 return live_nodes() > (uint)LiveNodeCountInliningCutoff * 11 / 10;
1011 }
1012 }
1013
1014 void inc_number_of_mh_late_inlines() { _number_of_mh_late_inlines++; }
1015 void dec_number_of_mh_late_inlines() { assert(_number_of_mh_late_inlines > 0, "_number_of_mh_late_inlines < 0 !"); _number_of_mh_late_inlines--; }
1016 bool has_mh_late_inlines() const { return _number_of_mh_late_inlines > 0; }
1017
1018 bool inline_incrementally_one();
1019 void inline_incrementally_cleanup(PhaseIterGVN& igvn);
1020 void inline_incrementally(PhaseIterGVN& igvn);
1021 void inline_string_calls(bool parse_time);
1022 void inline_boxing_calls(PhaseIterGVN& igvn);
1023 bool optimize_loops(PhaseIterGVN& igvn, LoopOptsMode mode);
1024 void remove_root_to_sfpts_edges(PhaseIterGVN& igvn);
1025
1026 void inline_vector_reboxing_calls();
1027 bool has_vbox_nodes();
1028
1029 void process_late_inline_calls_no_inline(PhaseIterGVN& igvn);
1030
1031 // Matching, CFG layout, allocation, code generation
1032 PhaseCFG* cfg() { return _cfg; }
1033 bool has_java_calls() const { return _java_calls > 0; }
1034 int java_calls() const { return _java_calls; }
1035 int inner_loops() const { return _inner_loops; }
1036 Matcher* matcher() { return _matcher; }
1037 PhaseRegAlloc* regalloc() { return _regalloc; }
1038 RegMask& FIRST_STACK_mask() { return _FIRST_STACK_mask; }
1039 Arena* indexSet_arena() { return _indexSet_arena; }
1040 void* indexSet_free_block_list() { return _indexSet_free_block_list; }
1041 DebugInformationRecorder* debug_info() { return env()->debug_info(); }
1042
1043 void update_interpreter_frame_size(int size) {
1044 if (_interpreter_frame_size < size) {
1045 _interpreter_frame_size = size;
1046 }
1047 }
1048
1049 void set_matcher(Matcher* m) { _matcher = m; }
1050 //void set_regalloc(PhaseRegAlloc* ra) { _regalloc = ra; }
1051 void set_indexSet_arena(Arena* a) { _indexSet_arena = a; }
1052 void set_indexSet_free_block_list(void* p) { _indexSet_free_block_list = p; }
1053
1054 void set_java_calls(int z) { _java_calls = z; }
1055 void set_inner_loops(int z) { _inner_loops = z; }
1056
1057 Dependencies* dependencies() { return env()->dependencies(); }
1058
1059 // Major entry point. Given a Scope, compile the associated method.
1060 // For normal compilations, entry_bci is InvocationEntryBci. For on stack
1061 // replacement, entry_bci indicates the bytecode for which to compile a
1062 // continuation.
1063 Compile(ciEnv* ci_env, ciMethod* target,
1064 int entry_bci, Options options, DirectiveSet* directive);
1065
1066 // Second major entry point. From the TypeFunc signature, generate code
1067 // to pass arguments from the Java calling convention to the C calling
1068 // convention.
1069 Compile(ciEnv* ci_env, const TypeFunc *(*gen)(),
1070 address stub_function, const char *stub_name,
1071 int is_fancy_jump, bool pass_tls,
1072 bool return_pc, DirectiveSet* directive);
1073
1074 // Are we compiling a method?
1075 bool has_method() { return method() != NULL; }
1076
1077 // Maybe print some information about this compile.
1078 void print_compile_messages();
1079
1080 // Final graph reshaping, a post-pass after the regular optimizer is done.
1081 bool final_graph_reshaping();
1082
1083 // returns true if adr is completely contained in the given alias category
1084 bool must_alias(const TypePtr* adr, int alias_idx);
1085
1086 // returns true if adr overlaps with the given alias category
1087 bool can_alias(const TypePtr* adr, int alias_idx);
1088
1089 // Stack slots that may be unused by the calling convention but must
1090 // otherwise be preserved. On Intel this includes the return address.
1091 // On PowerPC it includes the 4 words holding the old TOC & LR glue.
1092 uint in_preserve_stack_slots() {
1093 return SharedRuntime::in_preserve_stack_slots();
1094 }
1095
1096 // "Top of Stack" slots that may be unused by the calling convention but must
1097 // otherwise be preserved.
1098 // On Intel these are not necessary and the value can be zero.
1099 static uint out_preserve_stack_slots() {
1100 return SharedRuntime::out_preserve_stack_slots();
1101 }
1102
1103 // Number of outgoing stack slots killed above the out_preserve_stack_slots
1104 // for calls to C. Supports the var-args backing area for register parms.
1105 uint varargs_C_out_slots_killed() const;
1106
1107 // Number of Stack Slots consumed by a synchronization entry
1108 int sync_stack_slots() const;
1109
1110 // Compute the name of old_SP. See <arch>.ad for frame layout.
1111 OptoReg::Name compute_old_SP();
1112
1113 private:
1114 // Phase control:
1115 void Init(int aliaslevel); // Prepare for a single compilation
1116 int Inline_Warm(); // Find more inlining work.
1117 void Finish_Warm(); // Give up on further inlines.
1118 void Optimize(); // Given a graph, optimize it
1119 void Code_Gen(); // Generate code from a graph
1120
1121 // Management of the AliasType table.
1122 void grow_alias_types();
1123 AliasCacheEntry* probe_alias_cache(const TypePtr* adr_type);
1124 const TypePtr *flatten_alias_type(const TypePtr* adr_type) const;
1125 AliasType* find_alias_type(const TypePtr* adr_type, bool no_create, ciField* field);
1126
1127 void verify_top(Node*) const PRODUCT_RETURN;
1128
1129 // Intrinsic setup.
1130 CallGenerator* make_vm_intrinsic(ciMethod* m, bool is_virtual); // constructor
1131 int intrinsic_insertion_index(ciMethod* m, bool is_virtual, bool& found); // helper
1132 CallGenerator* find_intrinsic(ciMethod* m, bool is_virtual); // query fn
1133 void register_intrinsic(CallGenerator* cg); // update fn
1134
1135 #ifndef PRODUCT
1136 static juint _intrinsic_hist_count[];
1137 static jubyte _intrinsic_hist_flags[];
1138 #endif
1139 // Function calls made by the public function final_graph_reshaping.
1140 // No need to be made public as they are not called elsewhere.
1141 void final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc);
1142 void final_graph_reshaping_main_switch(Node* n, Final_Reshape_Counts& frc, uint nop);
1143 void final_graph_reshaping_walk( Node_Stack &nstack, Node *root, Final_Reshape_Counts &frc );
1144 void eliminate_redundant_card_marks(Node* n);
1145
1146 // Logic cone optimization.
1147 void optimize_logic_cones(PhaseIterGVN &igvn);
1148 void collect_logic_cone_roots(Unique_Node_List& list);
1149 void process_logic_cone_root(PhaseIterGVN &igvn, Node* n, VectorSet& visited);
1150 bool compute_logic_cone(Node* n, Unique_Node_List& partition, Unique_Node_List& inputs);
1151 uint compute_truth_table(Unique_Node_List& partition, Unique_Node_List& inputs);
1152 uint eval_macro_logic_op(uint func, uint op1, uint op2, uint op3);
1153 Node* xform_to_MacroLogicV(PhaseIterGVN &igvn, const TypeVect* vt, Unique_Node_List& partitions, Unique_Node_List& inputs);
1154 void check_no_dead_use() const NOT_DEBUG_RETURN;
1155
1156 public:
1157
1158 // Note: Histogram array size is about 1 Kb.
1159 enum { // flag bits:
1160 _intrinsic_worked = 1, // succeeded at least once
1161 _intrinsic_failed = 2, // tried it but it failed
1162 _intrinsic_disabled = 4, // was requested but disabled (e.g., -XX:-InlineUnsafeOps)
1163 _intrinsic_virtual = 8, // was seen in the virtual form (rare)
1164 _intrinsic_both = 16 // was seen in the non-virtual form (usual)
1165 };
1166 // Update histogram. Return boolean if this is a first-time occurrence.
1167 static bool gather_intrinsic_statistics(vmIntrinsics::ID id,
1168 bool is_virtual, int flags) PRODUCT_RETURN0;
1169 static void print_intrinsic_statistics() PRODUCT_RETURN;
1170
1171 // Graph verification code
1172 // Walk the node list, verifying that there is a one-to-one
1173 // correspondence between Use-Def edges and Def-Use edges
1174 // The option no_dead_code enables stronger checks that the
1175 // graph is strongly connected from root in both directions.
1176 void verify_graph_edges(bool no_dead_code = false) PRODUCT_RETURN;
1177
1178 // End-of-run dumps.
1179 static void print_statistics() PRODUCT_RETURN;
1180
1181 // Verify ADLC assumptions during startup
1182 static void adlc_verification() PRODUCT_RETURN;
1183
1184 // Definitions of pd methods
1185 static void pd_compiler2_init();
1186
1187 // Static parse-time type checking logic for gen_subtype_check:
1188 enum { SSC_always_false, SSC_always_true, SSC_easy_test, SSC_full_test };
1189 int static_subtype_check(ciKlass* superk, ciKlass* subk);
1190
1191 static Node* conv_I2X_index(PhaseGVN* phase, Node* offset, const TypeInt* sizetype,
1192 // Optional control dependency (for example, on range check)
1193 Node* ctrl = NULL);
1194
1195 // Convert integer value to a narrowed long type dependent on ctrl (for example, a range check)
1196 static Node* constrained_convI2L(PhaseGVN* phase, Node* value, const TypeInt* itype, Node* ctrl, bool carry_dependency = false);
1197
1198 // Auxiliary methods for randomized fuzzing/stressing
1199 int random();
1200 bool randomized_select(int count);
1201
1202 // supporting clone_map
1203 CloneMap& clone_map();
1204 void set_clone_map(Dict* d);
1205
1206 bool needs_clinit_barrier(ciField* ik, ciMethod* accessing_method);
1207 bool needs_clinit_barrier(ciMethod* ik, ciMethod* accessing_method);
1208 bool needs_clinit_barrier(ciInstanceKlass* ik, ciMethod* accessing_method);
1209
1210 #ifdef IA32
1211 private:
1212 bool _select_24_bit_instr; // We selected an instruction with a 24-bit result
1213 bool _in_24_bit_fp_mode; // We are emitting instructions with 24-bit results
1214
1215 // Remember if this compilation changes hardware mode to 24-bit precision.
1216 void set_24_bit_selection_and_mode(bool selection, bool mode) {
1217 _select_24_bit_instr = selection;
1218 _in_24_bit_fp_mode = mode;
1219 }
1220
1221 public:
1222 bool select_24_bit_instr() const { return _select_24_bit_instr; }
1223 bool in_24_bit_fp_mode() const { return _in_24_bit_fp_mode; }
1224 #endif // IA32
1225 #ifdef ASSERT
1226 bool _type_verify_symmetry;
1227 void set_exception_backedge() { _exception_backedge = true; }
1228 bool has_exception_backedge() const { return _exception_backedge; }
1229 #endif
1230
1231 static bool push_thru_add(PhaseGVN* phase, Node* z, const TypeInteger* tz, const TypeInteger*& rx, const TypeInteger*& ry,
1232 BasicType bt);
1233
1234 static Node* narrow_value(BasicType bt, Node* value, const Type* type, PhaseGVN* phase, bool transform_res);
1235 };
1236
1237 #endif // SHARE_OPTO_COMPILE_HPP