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 CallNode;
55 class CloneMap;
56 class ConnectionGraph;
57 class IdealGraphPrinter;
58 class InlineTree;
59 class Int_Array;
60 class Matcher;
61 class MachConstantNode;
62 class MachConstantBaseNode;
63 class MachNode;
64 class MachOper;
65 class MachSafePointNode;
66 class Node;
67 class Node_Array;
68 class Node_List;
69 class Node_Notes;
70 class NodeCloneInfo;
71 class OptoReg;
72 class PhaseCFG;
73 class PhaseGVN;
74 class PhaseIterGVN;
75 class PhaseRegAlloc;
76 class PhaseCCP;
77 class PhaseOutput;
78 class RootNode;
79 class relocInfo;
80 class Scope;
81 class StartNode;
82 class SafePointNode;
83 class JVMState;
84 class Type;
85 class TypeData;
86 class TypeInt;
87 class TypeInteger;
88 class TypePtr;
89 class TypeOopPtr;
90 class TypeFunc;
91 class TypeVect;
92 class Unique_Node_List;
93 class InlineTypeBaseNode;
94 class nmethod;
95 class Node_Stack;
96 struct Final_Reshape_Counts;
97
98 enum LoopOptsMode {
99 LoopOptsDefault,
100 LoopOptsNone,
101 LoopOptsMaxUnroll,
102 LoopOptsShenandoahExpand,
103 LoopOptsShenandoahPostExpand,
104 LoopOptsSkipSplitIf,
105 LoopOptsVerify
106 };
107
108 typedef unsigned int node_idx_t;
109 class NodeCloneInfo {
110 private:
111 uint64_t _idx_clone_orig;
112 public:
113
114 void set_idx(node_idx_t idx) {
115 _idx_clone_orig = (_idx_clone_orig & CONST64(0xFFFFFFFF00000000)) | idx;
116 }
117 node_idx_t idx() const { return (node_idx_t)(_idx_clone_orig & 0xFFFFFFFF); }
118
119 void set_gen(int generation) {
120 uint64_t g = (uint64_t)generation << 32;
121 _idx_clone_orig = (_idx_clone_orig & 0xFFFFFFFF) | g;
122 }
123 int gen() const { return (int)(_idx_clone_orig >> 32); }
124
125 void set(uint64_t x) { _idx_clone_orig = x; }
126 void set(node_idx_t x, int g) { set_idx(x); set_gen(g); }
127 uint64_t get() const { return _idx_clone_orig; }
128
129 NodeCloneInfo(uint64_t idx_clone_orig) : _idx_clone_orig(idx_clone_orig) {}
130 NodeCloneInfo(node_idx_t x, int g) : _idx_clone_orig(0) { set(x, g); }
131
132 void dump() const;
133 };
134
135 class CloneMap {
136 friend class Compile;
137 private:
138 bool _debug;
139 Dict* _dict;
140 int _clone_idx; // current cloning iteration/generation in loop unroll
141 public:
142 void* _2p(node_idx_t key) const { return (void*)(intptr_t)key; } // 2 conversion functions to make gcc happy
143 node_idx_t _2_node_idx_t(const void* k) const { return (node_idx_t)(intptr_t)k; }
144 Dict* dict() const { return _dict; }
145 void insert(node_idx_t key, uint64_t val) { assert(_dict->operator[](_2p(key)) == NULL, "key existed"); _dict->Insert(_2p(key), (void*)val); }
146 void insert(node_idx_t key, NodeCloneInfo& ci) { insert(key, ci.get()); }
147 void remove(node_idx_t key) { _dict->Delete(_2p(key)); }
148 uint64_t value(node_idx_t key) const { return (uint64_t)_dict->operator[](_2p(key)); }
149 node_idx_t idx(node_idx_t key) const { return NodeCloneInfo(value(key)).idx(); }
150 int gen(node_idx_t key) const { return NodeCloneInfo(value(key)).gen(); }
151 int gen(const void* k) const { return gen(_2_node_idx_t(k)); }
152 int max_gen() const;
153 void clone(Node* old, Node* nnn, int gen);
154 void verify_insert_and_clone(Node* old, Node* nnn, int gen);
155 void dump(node_idx_t key) const;
156
157 int clone_idx() const { return _clone_idx; }
158 void set_clone_idx(int x) { _clone_idx = x; }
159 bool is_debug() const { return _debug; }
160 void set_debug(bool debug) { _debug = debug; }
161 static const char* debug_option_name;
162
163 bool same_idx(node_idx_t k1, node_idx_t k2) const { return idx(k1) == idx(k2); }
164 bool same_gen(node_idx_t k1, node_idx_t k2) const { return gen(k1) == gen(k2); }
165 };
166
167 //------------------------------Compile----------------------------------------
168 // This class defines a top-level Compiler invocation.
169
170 class Compile : public Phase {
171 friend class VMStructs;
172
173 public:
174 // Fixed alias indexes. (See also MergeMemNode.)
175 enum {
176 AliasIdxTop = 1, // pseudo-index, aliases to nothing (used as sentinel value)
177 AliasIdxBot = 2, // pseudo-index, aliases to everything
178 AliasIdxRaw = 3 // hard-wired index for TypeRawPtr::BOTTOM
179 };
180
181 // Variant of TraceTime(NULL, &_t_accumulator, CITime);
182 // Integrated with logging. If logging is turned on, and CITimeVerbose is true,
183 // then brackets are put into the log, with time stamps and node counts.
184 // (The time collection itself is always conditionalized on CITime.)
185 class TracePhase : public TraceTime {
186 private:
187 Compile* C;
188 CompileLog* _log;
189 const char* _phase_name;
190 bool _dolog;
191 public:
192 TracePhase(const char* name, elapsedTimer* accumulator);
193 ~TracePhase();
194 };
195
196 // Information per category of alias (memory slice)
197 class AliasType {
198 private:
199 friend class Compile;
200
201 int _index; // unique index, used with MergeMemNode
202 const TypePtr* _adr_type; // normalized address type
203 ciField* _field; // relevant instance field, or null if none
204 const Type* _element; // relevant array element type, or null if none
205 bool _is_rewritable; // false if the memory is write-once only
206 int _general_index; // if this is type is an instance, the general
207 // type that this is an instance of
208
209 void Init(int i, const TypePtr* at);
210
211 public:
212 int index() const { return _index; }
213 const TypePtr* adr_type() const { return _adr_type; }
214 ciField* field() const { return _field; }
215 const Type* element() const { return _element; }
216 bool is_rewritable() const { return _is_rewritable; }
217 bool is_volatile() const { return (_field ? _field->is_volatile() : false); }
218 int general_index() const { return (_general_index != 0) ? _general_index : _index; }
219
220 void set_rewritable(bool z) { _is_rewritable = z; }
221 void set_field(ciField* f) {
222 assert(!_field,"");
223 _field = f;
224 if (f->is_final() || f->is_stable()) {
225 // In the case of @Stable, multiple writes are possible but may be assumed to be no-ops.
226 _is_rewritable = false;
227 }
228 }
229 void set_element(const Type* e) {
230 assert(_element == NULL, "");
231 _element = e;
232 }
233
234 BasicType basic_type() const;
235
236 void print_on(outputStream* st) PRODUCT_RETURN;
237 };
238
239 enum {
240 logAliasCacheSize = 6,
241 AliasCacheSize = (1<<logAliasCacheSize)
242 };
243 struct AliasCacheEntry { const TypePtr* _adr_type; int _index; }; // simple duple type
244 enum {
245 trapHistLength = MethodData::_trap_hist_limit
246 };
247
248 private:
249 // Fixed parameters to this compilation.
250 const int _compile_id;
251 const bool _subsume_loads; // Load can be matched as part of a larger op.
252 const bool _do_escape_analysis; // Do escape analysis.
253 const bool _install_code; // Install the code that was compiled
254 const bool _eliminate_boxing; // Do boxing elimination.
255 const bool _do_locks_coarsening; // Do locks coarsening
256 ciMethod* _method; // The method being compiled.
257 int _entry_bci; // entry bci for osr methods.
258 const TypeFunc* _tf; // My kind of signature
259 InlineTree* _ilt; // Ditto (temporary).
260 address _stub_function; // VM entry for stub being compiled, or NULL
261 const char* _stub_name; // Name of stub or adapter being compiled, or NULL
262 address _stub_entry_point; // Compile code entry for generated stub, or NULL
263
264 // Control of this compilation.
265 int _max_inline_size; // Max inline size for this compilation
266 int _freq_inline_size; // Max hot method inline size for this compilation
267 int _fixed_slots; // count of frame slots not allocated by the register
268 // allocator i.e. locks, original deopt pc, etc.
269 uintx _max_node_limit; // Max unique node count during a single compilation.
270
271 bool _post_loop_opts_phase; // Loop opts are finished.
272
273 int _major_progress; // Count of something big happening
274 bool _inlining_progress; // progress doing incremental inlining?
275 bool _inlining_incrementally;// Are we doing incremental inlining (post parse)
276 bool _do_cleanup; // Cleanup is needed before proceeding with incremental inlining
277 bool _has_loops; // True if the method _may_ have some loops
278 bool _has_split_ifs; // True if the method _may_ have some split-if
279 bool _has_unsafe_access; // True if the method _may_ produce faults in unsafe loads or stores.
280 bool _has_stringbuilder; // True StringBuffers or StringBuilders are allocated
281 bool _has_boxed_value; // True if a boxed object is allocated
282 bool _has_reserved_stack_access; // True if the method or an inlined method is annotated with ReservedStackAccess
283 uint _max_vector_size; // Maximum size of generated vectors
284 bool _clear_upper_avx; // Clear upper bits of ymm registers using vzeroupper
285 uint _trap_hist[trapHistLength]; // Cumulative traps
286 bool _trap_can_recompile; // Have we emitted a recompiling trap?
287 uint _decompile_count; // Cumulative decompilation counts.
288 bool _do_inlining; // True if we intend to do inlining
289 bool _do_scheduling; // True if we intend to do scheduling
290 bool _do_freq_based_layout; // True if we intend to do frequency based block layout
291 bool _do_vector_loop; // True if allowed to execute loop in parallel iterations
292 bool _use_cmove; // True if CMove should be used without profitability analysis
293 bool _age_code; // True if we need to profile code age (decrement the aging counter)
294 int _AliasLevel; // Locally-adjusted version of AliasLevel flag.
295 bool _print_assembly; // True if we should dump assembly code for this compilation
296 bool _print_inlining; // True if we should print inlining for this compilation
297 bool _print_intrinsics; // True if we should print intrinsics for this compilation
298 #ifndef PRODUCT
299 uint _igv_idx; // Counter for IGV node identifiers
300 bool _trace_opto_output;
301 bool _print_ideal;
302 bool _parsed_irreducible_loop; // True if ciTypeFlow detected irreducible loops during parsing
303 #endif
304 bool _has_irreducible_loop; // Found irreducible loops
305 // JSR 292
306 bool _has_method_handle_invokes; // True if this method has MethodHandle invokes.
307 RTMState _rtm_state; // State of Restricted Transactional Memory usage
308 int _loop_opts_cnt; // loop opts round
309 bool _clinit_barrier_on_entry; // True if clinit barrier is needed on nmethod entry
310 bool _has_flattened_accesses; // Any known flattened array accesses?
311 bool _flattened_accesses_share_alias; // Initially all flattened array share a single slice
312 bool _scalarize_in_safepoints; // Scalarize inline types in safepoint debug info
313 uint _stress_seed; // Seed for stress testing
314
315 // Compilation environment.
316 Arena _comp_arena; // Arena with lifetime equivalent to Compile
317 void* _barrier_set_state; // Potential GC barrier state for Compile
318 ciEnv* _env; // CI interface
319 DirectiveSet* _directive; // Compiler directive
320 CompileLog* _log; // from CompilerThread
321 const char* _failure_reason; // for record_failure/failing pattern
322 GrowableArray<CallGenerator*> _intrinsics; // List of intrinsics.
323 GrowableArray<Node*> _macro_nodes; // List of nodes which need to be expanded before matching.
324 GrowableArray<Node*> _predicate_opaqs; // List of Opaque1 nodes for the loop predicates.
325 GrowableArray<Node*> _skeleton_predicate_opaqs; // List of Opaque4 nodes for the loop skeleton predicates.
326 GrowableArray<Node*> _expensive_nodes; // List of nodes that are expensive to compute and that we'd better not let the GVN freely common
327 GrowableArray<Node*> _for_post_loop_igvn; // List of nodes for IGVN after loop opts are over
328 GrowableArray<Node*> _inline_type_nodes; // List of InlineType nodes
329 GrowableArray<Node_List*> _coarsened_locks; // List of coarsened Lock and Unlock nodes
330 ConnectionGraph* _congraph;
331 #ifndef PRODUCT
332 IdealGraphPrinter* _printer;
333 static IdealGraphPrinter* _debug_file_printer;
334 static IdealGraphPrinter* _debug_network_printer;
335 #endif
336
337
338 // Node management
339 uint _unique; // Counter for unique Node indices
340 VectorSet _dead_node_list; // Set of dead nodes
341 uint _dead_node_count; // Number of dead nodes; VectorSet::Size() is O(N).
342 // So use this to keep count and make the call O(1).
343 DEBUG_ONLY(Unique_Node_List* _modified_nodes;) // List of nodes which inputs were modified
344 DEBUG_ONLY(bool _phase_optimize_finished;) // Used for live node verification while creating new nodes
345
346 debug_only(static int _debug_idx;) // Monotonic counter (not reset), use -XX:BreakAtNode=<idx>
347 Arena _node_arena; // Arena for new-space Nodes
348 Arena _old_arena; // Arena for old-space Nodes, lifetime during xform
349 RootNode* _root; // Unique root of compilation, or NULL after bail-out.
350 Node* _top; // Unique top node. (Reset by various phases.)
351
352 Node* _immutable_memory; // Initial memory state
353
354 Node* _recent_alloc_obj;
355 Node* _recent_alloc_ctl;
356
357 // Constant table
358 MachConstantBaseNode* _mach_constant_base_node; // Constant table base node singleton.
359
360
361 // Blocked array of debugging and profiling information,
362 // tracked per node.
363 enum { _log2_node_notes_block_size = 8,
364 _node_notes_block_size = (1<<_log2_node_notes_block_size)
365 };
366 GrowableArray<Node_Notes*>* _node_note_array;
367 Node_Notes* _default_node_notes; // default notes for new nodes
368
369 // After parsing and every bulk phase we hang onto the Root instruction.
370 // The RootNode instruction is where the whole program begins. It produces
371 // the initial Control and BOTTOM for everybody else.
372
373 // Type management
374 Arena _Compile_types; // Arena for all types
375 Arena* _type_arena; // Alias for _Compile_types except in Initialize_shared()
376 Dict* _type_dict; // Intern table
377 CloneMap _clone_map; // used for recording history of cloned nodes
378 size_t _type_last_size; // Last allocation size (see Type::operator new/delete)
379 ciMethod* _last_tf_m; // Cache for
380 const TypeFunc* _last_tf; // TypeFunc::make
381 AliasType** _alias_types; // List of alias types seen so far.
382 int _num_alias_types; // Logical length of _alias_types
383 int _max_alias_types; // Physical length of _alias_types
384 AliasCacheEntry _alias_cache[AliasCacheSize]; // Gets aliases w/o data structure walking
385
386 // Parsing, optimization
387 PhaseGVN* _initial_gvn; // Results of parse-time PhaseGVN
388 Unique_Node_List* _for_igvn; // Initial work-list for next round of Iterative GVN
389
390 GrowableArray<CallGenerator*> _late_inlines; // List of CallGenerators to be revisited after main parsing has finished.
391 GrowableArray<CallGenerator*> _string_late_inlines; // same but for string operations
392 GrowableArray<CallGenerator*> _boxing_late_inlines; // same but for boxing operations
393
394 GrowableArray<CallGenerator*> _vector_reboxing_late_inlines; // same but for vector reboxing operations
395
396 int _late_inlines_pos; // Where in the queue should the next late inlining candidate go (emulate depth first inlining)
397 uint _number_of_mh_late_inlines; // number of method handle late inlining still pending
398
399 GrowableArray<RuntimeStub*> _native_invokers;
400
401 // Inlining may not happen in parse order which would make
402 // PrintInlining output confusing. Keep track of PrintInlining
403 // pieces in order.
404 class PrintInliningBuffer : public CHeapObj<mtCompiler> {
405 private:
406 CallGenerator* _cg;
407 stringStream _ss;
408 static const size_t default_stream_buffer_size = 128;
409
410 public:
411 PrintInliningBuffer()
412 : _cg(NULL), _ss(default_stream_buffer_size) {}
413
414 stringStream* ss() { return &_ss; }
415 CallGenerator* cg() { return _cg; }
416 void set_cg(CallGenerator* cg) { _cg = cg; }
417 };
418
419 stringStream* _print_inlining_stream;
420 GrowableArray<PrintInliningBuffer*>* _print_inlining_list;
421 int _print_inlining_idx;
422 char* _print_inlining_output;
423
424 // Only keep nodes in the expensive node list that need to be optimized
425 void cleanup_expensive_nodes(PhaseIterGVN &igvn);
426 // Use for sorting expensive nodes to bring similar nodes together
427 static int cmp_expensive_nodes(Node** n1, Node** n2);
428 // Expensive nodes list already sorted?
429 bool expensive_nodes_sorted() const;
430 // Remove the speculative part of types and clean up the graph
431 void remove_speculative_types(PhaseIterGVN &igvn);
432
433 void* _replay_inline_data; // Pointer to data loaded from file
434
435 void print_inlining_stream_free();
436 void print_inlining_init();
437 void print_inlining_reinit();
438 void print_inlining_commit();
439 void print_inlining_push();
440 PrintInliningBuffer* print_inlining_current();
441
442 void log_late_inline_failure(CallGenerator* cg, const char* msg);
443 DEBUG_ONLY(bool _exception_backedge;)
444
445 public:
446
447 void* barrier_set_state() const { return _barrier_set_state; }
448
449 outputStream* print_inlining_stream() const {
450 assert(print_inlining() || print_intrinsics(), "PrintInlining off?");
451 return _print_inlining_stream;
452 }
453
454 void print_inlining_update(CallGenerator* cg);
455 void print_inlining_update_delayed(CallGenerator* cg);
456 void print_inlining_move_to(CallGenerator* cg);
457 void print_inlining_assert_ready();
458 void print_inlining_reset();
459
460 void print_inlining(ciMethod* method, int inline_level, int bci, const char* msg = NULL) {
461 stringStream ss;
462 CompileTask::print_inlining_inner(&ss, method, inline_level, bci, msg);
463 print_inlining_stream()->print("%s", ss.as_string());
464 }
465
466 #ifndef PRODUCT
467 IdealGraphPrinter* printer() { return _printer; }
468 #endif
469
470 void log_late_inline(CallGenerator* cg);
471 void log_inline_id(CallGenerator* cg);
472 void log_inline_failure(const char* msg);
473
474 void* replay_inline_data() const { return _replay_inline_data; }
475
476 // Dump inlining replay data to the stream.
477 void dump_inline_data(outputStream* out);
478
479 private:
480 // Matching, CFG layout, allocation, code generation
481 PhaseCFG* _cfg; // Results of CFG finding
482 int _java_calls; // Number of java calls in the method
483 int _inner_loops; // Number of inner loops in the method
484 Matcher* _matcher; // Engine to map ideal to machine instructions
485 PhaseRegAlloc* _regalloc; // Results of register allocation.
486 RegMask _FIRST_STACK_mask; // All stack slots usable for spills (depends on frame layout)
487 Arena* _indexSet_arena; // control IndexSet allocation within PhaseChaitin
488 void* _indexSet_free_block_list; // free list of IndexSet bit blocks
489 int _interpreter_frame_size;
490
491 PhaseOutput* _output;
492
493 public:
494 // Accessors
495
496 // The Compile instance currently active in this (compiler) thread.
497 static Compile* current() {
498 return (Compile*) ciEnv::current()->compiler_data();
499 }
500
501 int interpreter_frame_size() const { return _interpreter_frame_size; }
502
503 PhaseOutput* output() const { return _output; }
504 void set_output(PhaseOutput* o) { _output = o; }
505
506 // ID for this compilation. Useful for setting breakpoints in the debugger.
507 int compile_id() const { return _compile_id; }
508 DirectiveSet* directive() const { return _directive; }
509
510 // Does this compilation allow instructions to subsume loads? User
511 // instructions that subsume a load may result in an unschedulable
512 // instruction sequence.
513 bool subsume_loads() const { return _subsume_loads; }
514 /** Do escape analysis. */
515 bool do_escape_analysis() const { return _do_escape_analysis; }
516 /** Do boxing elimination. */
517 bool eliminate_boxing() const { return _eliminate_boxing; }
518 /** Do aggressive boxing elimination. */
519 bool aggressive_unboxing() const { return _eliminate_boxing && AggressiveUnboxing; }
520 bool should_install_code() const { return _install_code; }
521 /** Do locks coarsening. */
522 bool do_locks_coarsening() const { return _do_locks_coarsening; }
523
524 // Other fixed compilation parameters.
525 ciMethod* method() const { return _method; }
526 int entry_bci() const { return _entry_bci; }
527 bool is_osr_compilation() const { return _entry_bci != InvocationEntryBci; }
528 bool is_method_compilation() const { return (_method != NULL && !_method->flags().is_native()); }
529 const TypeFunc* tf() const { assert(_tf!=NULL, ""); return _tf; }
530 void init_tf(const TypeFunc* tf) { assert(_tf==NULL, ""); _tf = tf; }
531 InlineTree* ilt() const { return _ilt; }
532 address stub_function() const { return _stub_function; }
533 const char* stub_name() const { return _stub_name; }
534 address stub_entry_point() const { return _stub_entry_point; }
535 void set_stub_entry_point(address z) { _stub_entry_point = z; }
536
537 // Control of this compilation.
538 int fixed_slots() const { assert(_fixed_slots >= 0, ""); return _fixed_slots; }
539 void set_fixed_slots(int n) { _fixed_slots = n; }
540 int major_progress() const { return _major_progress; }
541 void set_inlining_progress(bool z) { _inlining_progress = z; }
542 int inlining_progress() const { return _inlining_progress; }
543 void set_inlining_incrementally(bool z) { _inlining_incrementally = z; }
544 int inlining_incrementally() const { return _inlining_incrementally; }
545 void set_do_cleanup(bool z) { _do_cleanup = z; }
546 int do_cleanup() const { return _do_cleanup; }
547 void set_major_progress() { _major_progress++; }
548 void restore_major_progress(int progress) { _major_progress += progress; }
549 void clear_major_progress() { _major_progress = 0; }
550 int max_inline_size() const { return _max_inline_size; }
551 void set_freq_inline_size(int n) { _freq_inline_size = n; }
552 int freq_inline_size() const { return _freq_inline_size; }
553 void set_max_inline_size(int n) { _max_inline_size = n; }
554 bool has_loops() const { return _has_loops; }
555 void set_has_loops(bool z) { _has_loops = z; }
556 bool has_split_ifs() const { return _has_split_ifs; }
557 void set_has_split_ifs(bool z) { _has_split_ifs = z; }
558 bool has_unsafe_access() const { return _has_unsafe_access; }
559 void set_has_unsafe_access(bool z) { _has_unsafe_access = z; }
560 bool has_stringbuilder() const { return _has_stringbuilder; }
561 void set_has_stringbuilder(bool z) { _has_stringbuilder = z; }
562 bool has_boxed_value() const { return _has_boxed_value; }
563 void set_has_boxed_value(bool z) { _has_boxed_value = z; }
564 bool has_reserved_stack_access() const { return _has_reserved_stack_access; }
565 void set_has_reserved_stack_access(bool z) { _has_reserved_stack_access = z; }
566 uint max_vector_size() const { return _max_vector_size; }
567 void set_max_vector_size(uint s) { _max_vector_size = s; }
568 bool clear_upper_avx() const { return _clear_upper_avx; }
569 void set_clear_upper_avx(bool s) { _clear_upper_avx = s; }
570 void set_trap_count(uint r, uint c) { assert(r < trapHistLength, "oob"); _trap_hist[r] = c; }
571 uint trap_count(uint r) const { assert(r < trapHistLength, "oob"); return _trap_hist[r]; }
572 bool trap_can_recompile() const { return _trap_can_recompile; }
573 void set_trap_can_recompile(bool z) { _trap_can_recompile = z; }
574 uint decompile_count() const { return _decompile_count; }
575 void set_decompile_count(uint c) { _decompile_count = c; }
576 bool allow_range_check_smearing() const;
577 bool do_inlining() const { return _do_inlining; }
578 void set_do_inlining(bool z) { _do_inlining = z; }
579 bool do_scheduling() const { return _do_scheduling; }
580 void set_do_scheduling(bool z) { _do_scheduling = z; }
581 bool do_freq_based_layout() const{ return _do_freq_based_layout; }
582 void set_do_freq_based_layout(bool z){ _do_freq_based_layout = z; }
583 bool do_vector_loop() const { return _do_vector_loop; }
584 void set_do_vector_loop(bool z) { _do_vector_loop = z; }
585 bool use_cmove() const { return _use_cmove; }
586 void set_use_cmove(bool z) { _use_cmove = z; }
587 bool age_code() const { return _age_code; }
588 void set_age_code(bool z) { _age_code = z; }
589 int AliasLevel() const { return _AliasLevel; }
590 bool print_assembly() const { return _print_assembly; }
591 void set_print_assembly(bool z) { _print_assembly = z; }
592 bool print_inlining() const { return _print_inlining; }
593 void set_print_inlining(bool z) { _print_inlining = z; }
594 bool print_intrinsics() const { return _print_intrinsics; }
595 void set_print_intrinsics(bool z) { _print_intrinsics = z; }
596 RTMState rtm_state() const { return _rtm_state; }
597 void set_rtm_state(RTMState s) { _rtm_state = s; }
598 bool use_rtm() const { return (_rtm_state & NoRTM) == 0; }
599 bool profile_rtm() const { return _rtm_state == ProfileRTM; }
600 uint max_node_limit() const { return (uint)_max_node_limit; }
601 void set_max_node_limit(uint n) { _max_node_limit = n; }
602 bool clinit_barrier_on_entry() { return _clinit_barrier_on_entry; }
603 void set_clinit_barrier_on_entry(bool z) { _clinit_barrier_on_entry = z; }
604 void set_flattened_accesses() { _has_flattened_accesses = true; }
605 bool flattened_accesses_share_alias() const { return _flattened_accesses_share_alias; }
606 void set_flattened_accesses_share_alias(bool z) { _flattened_accesses_share_alias = z; }
607 bool scalarize_in_safepoints() const { return _scalarize_in_safepoints; }
608 void set_scalarize_in_safepoints(bool z) { _scalarize_in_safepoints = z; }
609
610 // Support for scalarized inline type calling convention
611 bool has_scalarized_args() const { return _method != NULL && _method->has_scalarized_args(); }
612 bool needs_stack_repair() const { return _method != NULL && _method->get_Method()->c2_needs_stack_repair(); }
613
614 // check the CompilerOracle for special behaviours for this compile
615 bool method_has_option(enum CompileCommand option) {
616 return method() != NULL && method()->has_option(option);
617 }
618
619 #ifndef PRODUCT
620 uint next_igv_idx() { return _igv_idx++; }
621 bool trace_opto_output() const { return _trace_opto_output; }
622 bool print_ideal() const { return _print_ideal; }
623 bool parsed_irreducible_loop() const { return _parsed_irreducible_loop; }
624 void set_parsed_irreducible_loop(bool z) { _parsed_irreducible_loop = z; }
625 int _in_dump_cnt; // Required for dumping ir nodes.
626 #endif
627 bool has_irreducible_loop() const { return _has_irreducible_loop; }
628 void set_has_irreducible_loop(bool z) { _has_irreducible_loop = z; }
629
630 // JSR 292
631 bool has_method_handle_invokes() const { return _has_method_handle_invokes; }
632 void set_has_method_handle_invokes(bool z) { _has_method_handle_invokes = z; }
633
634 Ticks _latest_stage_start_counter;
635
636 void begin_method(int level = 1) {
637 #ifndef PRODUCT
638 if (_method != NULL && should_print(level)) {
639 _printer->begin_method();
640 }
641 #endif
642 C->_latest_stage_start_counter.stamp();
643 }
644
645 bool should_print(int level = 1) {
646 #ifndef PRODUCT
647 if (PrintIdealGraphLevel < 0) { // disabled by the user
648 return false;
649 }
650
651 bool need = directive()->IGVPrintLevelOption >= level;
652 if (need && !_printer) {
653 _printer = IdealGraphPrinter::printer();
654 assert(_printer != NULL, "_printer is NULL when we need it!");
655 _printer->set_compile(this);
656 }
657 return need;
658 #else
659 return false;
660 #endif
661 }
662
663 void print_method(CompilerPhaseType cpt, const char *name, int level = 1);
664 void print_method(CompilerPhaseType cpt, int level = 1, int idx = 0);
665 void print_method(CompilerPhaseType cpt, Node* n, int level = 3);
666
667 #ifndef PRODUCT
668 void igv_print_method_to_file(const char* phase_name = "Debug", bool append = false);
669 void igv_print_method_to_network(const char* phase_name = "Debug");
670 static IdealGraphPrinter* debug_file_printer() { return _debug_file_printer; }
671 static IdealGraphPrinter* debug_network_printer() { return _debug_network_printer; }
672 #endif
673
674 void end_method(int level = 1);
675
676 int macro_count() const { return _macro_nodes.length(); }
677 int predicate_count() const { return _predicate_opaqs.length(); }
678 int skeleton_predicate_count() const { return _skeleton_predicate_opaqs.length(); }
679 int expensive_count() const { return _expensive_nodes.length(); }
680 int coarsened_count() const { return _coarsened_locks.length(); }
681
682 Node* macro_node(int idx) const { return _macro_nodes.at(idx); }
683 Node* predicate_opaque1_node(int idx) const { return _predicate_opaqs.at(idx); }
684 Node* skeleton_predicate_opaque4_node(int idx) const { return _skeleton_predicate_opaqs.at(idx); }
685 Node* expensive_node(int idx) const { return _expensive_nodes.at(idx); }
686
687 ConnectionGraph* congraph() { return _congraph;}
688 void set_congraph(ConnectionGraph* congraph) { _congraph = congraph;}
689 void add_macro_node(Node * n) {
690 //assert(n->is_macro(), "must be a macro node");
691 assert(!_macro_nodes.contains(n), "duplicate entry in expand list");
692 _macro_nodes.append(n);
693 }
694 void remove_macro_node(Node* n) {
695 // this function may be called twice for a node so we can only remove it
696 // if it's still existing.
697 _macro_nodes.remove_if_existing(n);
698 // remove from _predicate_opaqs list also if it is there
699 if (predicate_count() > 0) {
700 _predicate_opaqs.remove_if_existing(n);
701 }
702 // Remove from coarsened locks list if present
703 if (coarsened_count() > 0) {
704 remove_coarsened_lock(n);
705 }
706 }
707 void add_expensive_node(Node* n);
708 void remove_expensive_node(Node* n) {
709 _expensive_nodes.remove_if_existing(n);
710 }
711 void add_predicate_opaq(Node* n) {
712 assert(!_predicate_opaqs.contains(n), "duplicate entry in predicate opaque1");
713 assert(_macro_nodes.contains(n), "should have already been in macro list");
714 _predicate_opaqs.append(n);
715 }
716 void add_skeleton_predicate_opaq(Node* n) {
717 assert(!_skeleton_predicate_opaqs.contains(n), "duplicate entry in skeleton predicate opaque4 list");
718 _skeleton_predicate_opaqs.append(n);
719 }
720 void remove_skeleton_predicate_opaq(Node* n) {
721 if (skeleton_predicate_count() > 0) {
722 _skeleton_predicate_opaqs.remove_if_existing(n);
723 }
724 }
725 void add_coarsened_locks(GrowableArray<AbstractLockNode*>& locks);
726 void remove_coarsened_lock(Node* n);
727 bool coarsened_locks_consistent();
728
729 bool post_loop_opts_phase() { return _post_loop_opts_phase; }
730 void set_post_loop_opts_phase() { _post_loop_opts_phase = true; }
731 void reset_post_loop_opts_phase() { _post_loop_opts_phase = false; }
732
733 void record_for_post_loop_opts_igvn(Node* n);
734 void remove_from_post_loop_opts_igvn(Node* n);
735 void process_for_post_loop_opts_igvn(PhaseIterGVN& igvn);
736
737 // Keep track of inline type nodes for later processing
738 void add_inline_type(Node* n);
739 void remove_inline_type(Node* n);
740 void process_inline_types(PhaseIterGVN &igvn, bool remove = false);
741
742 void adjust_flattened_array_access_aliases(PhaseIterGVN& igvn);
743
744 void sort_macro_nodes();
745
746 // remove the opaque nodes that protect the predicates so that the unused checks and
747 // uncommon traps will be eliminated from the graph.
748 void cleanup_loop_predicates(PhaseIterGVN &igvn);
749 bool is_predicate_opaq(Node* n) {
750 return _predicate_opaqs.contains(n);
751 }
752
753 // Are there candidate expensive nodes for optimization?
754 bool should_optimize_expensive_nodes(PhaseIterGVN &igvn);
755 // Check whether n1 and n2 are similar
756 static int cmp_expensive_nodes(Node* n1, Node* n2);
757 // Sort expensive nodes to locate similar expensive nodes
758 void sort_expensive_nodes();
759
760 // Compilation environment.
761 Arena* comp_arena() { return &_comp_arena; }
762 ciEnv* env() const { return _env; }
763 CompileLog* log() const { return _log; }
764 bool failing() const { return _env->failing() || _failure_reason != NULL; }
765 const char* failure_reason() const { return (_env->failing()) ? _env->failure_reason() : _failure_reason; }
766
767 bool failure_reason_is(const char* r) const {
768 return (r == _failure_reason) || (r != NULL && _failure_reason != NULL && strcmp(r, _failure_reason) == 0);
769 }
770
771 void record_failure(const char* reason);
772 void record_method_not_compilable(const char* reason) {
773 env()->record_method_not_compilable(reason);
774 // Record failure reason.
775 record_failure(reason);
776 }
777 bool check_node_count(uint margin, const char* reason) {
778 if (live_nodes() + margin > max_node_limit()) {
779 record_method_not_compilable(reason);
780 return true;
781 } else {
782 return false;
783 }
784 }
785
786 // Node management
787 uint unique() const { return _unique; }
788 uint next_unique() { return _unique++; }
789 void set_unique(uint i) { _unique = i; }
790 static int debug_idx() { return debug_only(_debug_idx)+0; }
791 static void set_debug_idx(int i) { debug_only(_debug_idx = i); }
792 Arena* node_arena() { return &_node_arena; }
793 Arena* old_arena() { return &_old_arena; }
794 RootNode* root() const { return _root; }
795 void set_root(RootNode* r) { _root = r; }
796 StartNode* start() const; // (Derived from root.)
797 void init_start(StartNode* s);
798 Node* immutable_memory();
799
800 Node* recent_alloc_ctl() const { return _recent_alloc_ctl; }
801 Node* recent_alloc_obj() const { return _recent_alloc_obj; }
802 void set_recent_alloc(Node* ctl, Node* obj) {
803 _recent_alloc_ctl = ctl;
804 _recent_alloc_obj = obj;
805 }
806 void record_dead_node(uint idx) { if (_dead_node_list.test_set(idx)) return;
807 _dead_node_count++;
808 }
809 void reset_dead_node_list() { _dead_node_list.reset();
810 _dead_node_count = 0;
811 }
812 uint live_nodes() const {
813 int val = _unique - _dead_node_count;
814 assert (val >= 0, "number of tracked dead nodes %d more than created nodes %d", _unique, _dead_node_count);
815 return (uint) val;
816 }
817 #ifdef ASSERT
818 void set_phase_optimize_finished() { _phase_optimize_finished = true; }
819 bool phase_optimize_finished() const { return _phase_optimize_finished; }
820 uint count_live_nodes_by_graph_walk();
821 void print_missing_nodes();
822 #endif
823
824 // Record modified nodes to check that they are put on IGVN worklist
825 void record_modified_node(Node* n) NOT_DEBUG_RETURN;
826 void remove_modified_node(Node* n) NOT_DEBUG_RETURN;
827 DEBUG_ONLY( Unique_Node_List* modified_nodes() const { return _modified_nodes; } )
828
829 MachConstantBaseNode* mach_constant_base_node();
830 bool has_mach_constant_base_node() const { return _mach_constant_base_node != NULL; }
831 // Generated by adlc, true if CallNode requires MachConstantBase.
832 bool needs_deep_clone_jvms();
833
834 // Handy undefined Node
835 Node* top() const { return _top; }
836
837 // these are used by guys who need to know about creation and transformation of top:
838 Node* cached_top_node() { return _top; }
839 void set_cached_top_node(Node* tn);
840
841 GrowableArray<Node_Notes*>* node_note_array() const { return _node_note_array; }
842 void set_node_note_array(GrowableArray<Node_Notes*>* arr) { _node_note_array = arr; }
843 Node_Notes* default_node_notes() const { return _default_node_notes; }
844 void set_default_node_notes(Node_Notes* n) { _default_node_notes = n; }
845
846 Node_Notes* node_notes_at(int idx) {
847 return locate_node_notes(_node_note_array, idx, false);
848 }
849 inline bool set_node_notes_at(int idx, Node_Notes* value);
850
851 // Copy notes from source to dest, if they exist.
852 // Overwrite dest only if source provides something.
853 // Return true if information was moved.
854 bool copy_node_notes_to(Node* dest, Node* source);
855
856 // Workhorse function to sort out the blocked Node_Notes array:
857 inline Node_Notes* locate_node_notes(GrowableArray<Node_Notes*>* arr,
858 int idx, bool can_grow = false);
859
860 void grow_node_notes(GrowableArray<Node_Notes*>* arr, int grow_by);
861
862 // Type management
863 Arena* type_arena() { return _type_arena; }
864 Dict* type_dict() { return _type_dict; }
865 size_t type_last_size() { return _type_last_size; }
866 int num_alias_types() { return _num_alias_types; }
867
868 void init_type_arena() { _type_arena = &_Compile_types; }
869 void set_type_arena(Arena* a) { _type_arena = a; }
870 void set_type_dict(Dict* d) { _type_dict = d; }
871 void set_type_last_size(size_t sz) { _type_last_size = sz; }
872
873 const TypeFunc* last_tf(ciMethod* m) {
874 return (m == _last_tf_m) ? _last_tf : NULL;
875 }
876 void set_last_tf(ciMethod* m, const TypeFunc* tf) {
877 assert(m != NULL || tf == NULL, "");
878 _last_tf_m = m;
879 _last_tf = tf;
880 }
881
882 AliasType* alias_type(int idx) { assert(idx < num_alias_types(), "oob"); return _alias_types[idx]; }
883 AliasType* alias_type(const TypePtr* adr_type, ciField* field = NULL, bool uncached = false) { return find_alias_type(adr_type, false, field, uncached); }
884 bool have_alias_type(const TypePtr* adr_type);
885 AliasType* alias_type(ciField* field);
886
887 int get_alias_index(const TypePtr* at, bool uncached = false) { return alias_type(at, NULL, uncached)->index(); }
888 const TypePtr* get_adr_type(uint aidx) { return alias_type(aidx)->adr_type(); }
889 int get_general_index(uint aidx) { return alias_type(aidx)->general_index(); }
890
891 // Building nodes
892 void rethrow_exceptions(JVMState* jvms);
893 void return_values(JVMState* jvms);
894 JVMState* build_start_state(StartNode* start, const TypeFunc* tf);
895
896 // Decide how to build a call.
897 // The profile factor is a discount to apply to this site's interp. profile.
898 CallGenerator* call_generator(ciMethod* call_method, int vtable_index, bool call_does_dispatch,
899 JVMState* jvms, bool allow_inline, float profile_factor, ciKlass* speculative_receiver_type = NULL,
900 bool allow_intrinsics = true);
901 bool should_delay_inlining(ciMethod* call_method, JVMState* jvms) {
902 return should_delay_string_inlining(call_method, jvms) ||
903 should_delay_boxing_inlining(call_method, jvms) ||
904 should_delay_vector_inlining(call_method, jvms);
905 }
906 bool should_delay_string_inlining(ciMethod* call_method, JVMState* jvms);
907 bool should_delay_boxing_inlining(ciMethod* call_method, JVMState* jvms);
908 bool should_delay_vector_inlining(ciMethod* call_method, JVMState* jvms);
909 bool should_delay_vector_reboxing_inlining(ciMethod* call_method, JVMState* jvms);
910
911 // Helper functions to identify inlining potential at call-site
912 ciMethod* optimize_virtual_call(ciMethod* caller, ciInstanceKlass* klass,
913 ciKlass* holder, ciMethod* callee,
914 const TypeOopPtr* receiver_type, bool is_virtual,
915 bool &call_does_dispatch, int &vtable_index,
916 bool check_access = true);
917 ciMethod* optimize_inlining(ciMethod* caller, ciInstanceKlass* klass, ciKlass* holder,
918 ciMethod* callee, const TypeOopPtr* receiver_type,
919 bool check_access = true);
920
921 // Report if there were too many traps at a current method and bci.
922 // Report if a trap was recorded, and/or PerMethodTrapLimit was exceeded.
923 // If there is no MDO at all, report no trap unless told to assume it.
924 bool too_many_traps(ciMethod* method, int bci, Deoptimization::DeoptReason reason);
925 // This version, unspecific to a particular bci, asks if
926 // PerMethodTrapLimit was exceeded for all inlined methods seen so far.
927 bool too_many_traps(Deoptimization::DeoptReason reason,
928 // Privately used parameter for logging:
929 ciMethodData* logmd = NULL);
930 // Report if there were too many recompiles at a method and bci.
931 bool too_many_recompiles(ciMethod* method, int bci, Deoptimization::DeoptReason reason);
932 // Report if there were too many traps or recompiles at a method and bci.
933 bool too_many_traps_or_recompiles(ciMethod* method, int bci, Deoptimization::DeoptReason reason) {
934 return too_many_traps(method, bci, reason) ||
935 too_many_recompiles(method, bci, reason);
936 }
937 // Return a bitset with the reasons where deoptimization is allowed,
938 // i.e., where there were not too many uncommon traps.
939 int _allowed_reasons;
940 int allowed_deopt_reasons() { return _allowed_reasons; }
941 void set_allowed_deopt_reasons();
942
943 // Parsing, optimization
944 PhaseGVN* initial_gvn() { return _initial_gvn; }
945 Unique_Node_List* for_igvn() { return _for_igvn; }
946 inline void record_for_igvn(Node* n); // Body is after class Unique_Node_List.
947 void set_initial_gvn(PhaseGVN *gvn) { _initial_gvn = gvn; }
948 void set_for_igvn(Unique_Node_List *for_igvn) { _for_igvn = for_igvn; }
949
950 // Replace n by nn using initial_gvn, calling hash_delete and
951 // record_for_igvn as needed.
952 void gvn_replace_by(Node* n, Node* nn);
953
954
955 void identify_useful_nodes(Unique_Node_List &useful);
956 void update_dead_node_list(Unique_Node_List &useful);
957 void disconnect_useless_nodes(Unique_Node_List &useful, Unique_Node_List* worklist);
958
959 void remove_useless_node(Node* dead);
960
961 // Record this CallGenerator for inlining at the end of parsing.
962 void add_late_inline(CallGenerator* cg) {
963 _late_inlines.insert_before(_late_inlines_pos, cg);
964 _late_inlines_pos++;
965 }
966
967 void prepend_late_inline(CallGenerator* cg) {
968 _late_inlines.insert_before(0, cg);
969 }
970
971 void add_string_late_inline(CallGenerator* cg) {
972 _string_late_inlines.push(cg);
973 }
974
975 void add_boxing_late_inline(CallGenerator* cg) {
976 _boxing_late_inlines.push(cg);
977 }
978
979 void add_vector_reboxing_late_inline(CallGenerator* cg) {
980 _vector_reboxing_late_inlines.push(cg);
981 }
982
983 void add_native_invoker(RuntimeStub* stub);
984
985 const GrowableArray<RuntimeStub*> native_invokers() const { return _native_invokers; }
986
987 void remove_useless_nodes (GrowableArray<Node*>& node_list, Unique_Node_List &useful);
988
989 void remove_useless_late_inlines(GrowableArray<CallGenerator*>* inlines, Unique_Node_List &useful);
990 void remove_useless_late_inlines(GrowableArray<CallGenerator*>* inlines, Node* dead);
991
992 void remove_useless_coarsened_locks(Unique_Node_List& useful);
993
994 void process_print_inlining();
995 void dump_print_inlining();
996
997 bool over_inlining_cutoff() const {
998 if (!inlining_incrementally()) {
999 return unique() > (uint)NodeCountInliningCutoff;
1000 } else {
1001 // Give some room for incremental inlining algorithm to "breathe"
1002 // and avoid thrashing when live node count is close to the limit.
1003 // Keep in mind that live_nodes() isn't accurate during inlining until
1004 // dead node elimination step happens (see Compile::inline_incrementally).
1005 return live_nodes() > (uint)LiveNodeCountInliningCutoff * 11 / 10;
1006 }
1007 }
1008
1009 void inc_number_of_mh_late_inlines() { _number_of_mh_late_inlines++; }
1010 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--; }
1011 bool has_mh_late_inlines() const { return _number_of_mh_late_inlines > 0; }
1012
1013 bool inline_incrementally_one();
1014 void inline_incrementally_cleanup(PhaseIterGVN& igvn);
1015 void inline_incrementally(PhaseIterGVN& igvn);
1016 void inline_string_calls(bool parse_time);
1017 void inline_boxing_calls(PhaseIterGVN& igvn);
1018 bool optimize_loops(PhaseIterGVN& igvn, LoopOptsMode mode);
1019 void remove_root_to_sfpts_edges(PhaseIterGVN& igvn);
1020
1021 void inline_vector_reboxing_calls();
1022 bool has_vbox_nodes();
1023
1024 void process_late_inline_calls_no_inline(PhaseIterGVN& igvn);
1025
1026 // Matching, CFG layout, allocation, code generation
1027 PhaseCFG* cfg() { return _cfg; }
1028 bool has_java_calls() const { return _java_calls > 0; }
1029 int java_calls() const { return _java_calls; }
1030 int inner_loops() const { return _inner_loops; }
1031 Matcher* matcher() { return _matcher; }
1032 PhaseRegAlloc* regalloc() { return _regalloc; }
1033 RegMask& FIRST_STACK_mask() { return _FIRST_STACK_mask; }
1034 Arena* indexSet_arena() { return _indexSet_arena; }
1035 void* indexSet_free_block_list() { return _indexSet_free_block_list; }
1036 DebugInformationRecorder* debug_info() { return env()->debug_info(); }
1037
1038 void update_interpreter_frame_size(int size) {
1039 if (_interpreter_frame_size < size) {
1040 _interpreter_frame_size = size;
1041 }
1042 }
1043
1044 void set_matcher(Matcher* m) { _matcher = m; }
1045 //void set_regalloc(PhaseRegAlloc* ra) { _regalloc = ra; }
1046 void set_indexSet_arena(Arena* a) { _indexSet_arena = a; }
1047 void set_indexSet_free_block_list(void* p) { _indexSet_free_block_list = p; }
1048
1049 void set_java_calls(int z) { _java_calls = z; }
1050 void set_inner_loops(int z) { _inner_loops = z; }
1051
1052 Dependencies* dependencies() { return env()->dependencies(); }
1053
1054 // Major entry point. Given a Scope, compile the associated method.
1055 // For normal compilations, entry_bci is InvocationEntryBci. For on stack
1056 // replacement, entry_bci indicates the bytecode for which to compile a
1057 // continuation.
1058 Compile(ciEnv* ci_env, ciMethod* target,
1059 int entry_bci, bool subsume_loads, bool do_escape_analysis,
1060 bool eliminate_boxing, bool do_locks_coarsening,
1061 bool install_code, DirectiveSet* directive);
1062
1063 // Second major entry point. From the TypeFunc signature, generate code
1064 // to pass arguments from the Java calling convention to the C calling
1065 // convention.
1066 Compile(ciEnv* ci_env, const TypeFunc *(*gen)(),
1067 address stub_function, const char *stub_name,
1068 int is_fancy_jump, bool pass_tls,
1069 bool return_pc, DirectiveSet* directive);
1070
1071 // Are we compiling a method?
1072 bool has_method() { return method() != NULL; }
1073
1074 // Maybe print some information about this compile.
1075 void print_compile_messages();
1076
1077 // Final graph reshaping, a post-pass after the regular optimizer is done.
1078 bool final_graph_reshaping();
1079
1080 // returns true if adr is completely contained in the given alias category
1081 bool must_alias(const TypePtr* adr, int alias_idx);
1082
1083 // returns true if adr overlaps with the given alias category
1084 bool can_alias(const TypePtr* adr, int alias_idx);
1085
1086 // Stack slots that may be unused by the calling convention but must
1087 // otherwise be preserved. On Intel this includes the return address.
1088 // On PowerPC it includes the 4 words holding the old TOC & LR glue.
1089 uint in_preserve_stack_slots() {
1090 return SharedRuntime::in_preserve_stack_slots();
1091 }
1092
1093 // "Top of Stack" slots that may be unused by the calling convention but must
1094 // otherwise be preserved.
1095 // On Intel these are not necessary and the value can be zero.
1096 static uint out_preserve_stack_slots() {
1097 return SharedRuntime::out_preserve_stack_slots();
1098 }
1099
1100 // Number of outgoing stack slots killed above the out_preserve_stack_slots
1101 // for calls to C. Supports the var-args backing area for register parms.
1102 uint varargs_C_out_slots_killed() const;
1103
1104 // Number of Stack Slots consumed by a synchronization entry
1105 int sync_stack_slots() const;
1106
1107 // Compute the name of old_SP. See <arch>.ad for frame layout.
1108 OptoReg::Name compute_old_SP();
1109
1110 private:
1111 // Phase control:
1112 void Init(int aliaslevel); // Prepare for a single compilation
1113 int Inline_Warm(); // Find more inlining work.
1114 void Finish_Warm(); // Give up on further inlines.
1115 void Optimize(); // Given a graph, optimize it
1116 void Code_Gen(); // Generate code from a graph
1117
1118 // Management of the AliasType table.
1119 void grow_alias_types();
1120 AliasCacheEntry* probe_alias_cache(const TypePtr* adr_type);
1121 const TypePtr *flatten_alias_type(const TypePtr* adr_type) const;
1122 AliasType* find_alias_type(const TypePtr* adr_type, bool no_create, ciField* field, bool uncached = false);
1123
1124 void verify_top(Node*) const PRODUCT_RETURN;
1125
1126 // Intrinsic setup.
1127 CallGenerator* make_vm_intrinsic(ciMethod* m, bool is_virtual); // constructor
1128 int intrinsic_insertion_index(ciMethod* m, bool is_virtual, bool& found); // helper
1129 CallGenerator* find_intrinsic(ciMethod* m, bool is_virtual); // query fn
1130 void register_intrinsic(CallGenerator* cg); // update fn
1131
1132 #ifndef PRODUCT
1133 static juint _intrinsic_hist_count[];
1134 static jubyte _intrinsic_hist_flags[];
1135 #endif
1136 // Function calls made by the public function final_graph_reshaping.
1137 // No need to be made public as they are not called elsewhere.
1138 void final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc);
1139 void final_graph_reshaping_main_switch(Node* n, Final_Reshape_Counts& frc, uint nop);
1140 void final_graph_reshaping_walk( Node_Stack &nstack, Node *root, Final_Reshape_Counts &frc );
1141 void eliminate_redundant_card_marks(Node* n);
1142
1143 // Logic cone optimization.
1144 void optimize_logic_cones(PhaseIterGVN &igvn);
1145 void collect_logic_cone_roots(Unique_Node_List& list);
1146 void process_logic_cone_root(PhaseIterGVN &igvn, Node* n, VectorSet& visited);
1147 bool compute_logic_cone(Node* n, Unique_Node_List& partition, Unique_Node_List& inputs);
1148 uint compute_truth_table(Unique_Node_List& partition, Unique_Node_List& inputs);
1149 uint eval_macro_logic_op(uint func, uint op1, uint op2, uint op3);
1150 Node* xform_to_MacroLogicV(PhaseIterGVN &igvn, const TypeVect* vt, Unique_Node_List& partitions, Unique_Node_List& inputs);
1151 void check_no_dead_use() const NOT_DEBUG_RETURN;
1152
1153 public:
1154
1155 // Note: Histogram array size is about 1 Kb.
1156 enum { // flag bits:
1157 _intrinsic_worked = 1, // succeeded at least once
1158 _intrinsic_failed = 2, // tried it but it failed
1159 _intrinsic_disabled = 4, // was requested but disabled (e.g., -XX:-InlineUnsafeOps)
1160 _intrinsic_virtual = 8, // was seen in the virtual form (rare)
1161 _intrinsic_both = 16 // was seen in the non-virtual form (usual)
1162 };
1163 // Update histogram. Return boolean if this is a first-time occurrence.
1164 static bool gather_intrinsic_statistics(vmIntrinsics::ID id,
1165 bool is_virtual, int flags) PRODUCT_RETURN0;
1166 static void print_intrinsic_statistics() PRODUCT_RETURN;
1167
1168 // Graph verification code
1169 // Walk the node list, verifying that there is a one-to-one
1170 // correspondence between Use-Def edges and Def-Use edges
1171 // The option no_dead_code enables stronger checks that the
1172 // graph is strongly connected from root in both directions.
1173 void verify_graph_edges(bool no_dead_code = false) PRODUCT_RETURN;
1174
1175 // End-of-run dumps.
1176 static void print_statistics() PRODUCT_RETURN;
1177
1178 // Verify ADLC assumptions during startup
1179 static void adlc_verification() PRODUCT_RETURN;
1180
1181 // Definitions of pd methods
1182 static void pd_compiler2_init();
1183
1184 // Static parse-time type checking logic for gen_subtype_check:
1185 enum { SSC_always_false, SSC_always_true, SSC_easy_test, SSC_full_test };
1186 int static_subtype_check(ciKlass* superk, ciKlass* subk);
1187
1188 static Node* conv_I2X_index(PhaseGVN* phase, Node* offset, const TypeInt* sizetype,
1189 // Optional control dependency (for example, on range check)
1190 Node* ctrl = NULL);
1191
1192 // Convert integer value to a narrowed long type dependent on ctrl (for example, a range check)
1193 static Node* constrained_convI2L(PhaseGVN* phase, Node* value, const TypeInt* itype, Node* ctrl, bool carry_dependency = false);
1194
1195 Node* optimize_acmp(PhaseGVN* phase, Node* a, Node* b);
1196
1197 // Auxiliary method for randomized fuzzing/stressing
1198 int random();
1199 bool randomized_select(int count);
1200
1201 // supporting clone_map
1202 CloneMap& clone_map();
1203 void set_clone_map(Dict* d);
1204
1205 bool needs_clinit_barrier(ciField* ik, ciMethod* accessing_method);
1206 bool needs_clinit_barrier(ciMethod* ik, ciMethod* accessing_method);
1207 bool needs_clinit_barrier(ciInstanceKlass* ik, ciMethod* accessing_method);
1208
1209 #ifdef IA32
1210 private:
1211 bool _select_24_bit_instr; // We selected an instruction with a 24-bit result
1212 bool _in_24_bit_fp_mode; // We are emitting instructions with 24-bit results
1213
1214 // Remember if this compilation changes hardware mode to 24-bit precision.
1215 void set_24_bit_selection_and_mode(bool selection, bool mode) {
1216 _select_24_bit_instr = selection;
1217 _in_24_bit_fp_mode = mode;
1218 }
1219
1220 public:
1221 bool select_24_bit_instr() const { return _select_24_bit_instr; }
1222 bool in_24_bit_fp_mode() const { return _in_24_bit_fp_mode; }
1223 #endif // IA32
1224 #ifdef ASSERT
1225 bool _type_verify_symmetry;
1226 void set_exception_backedge() { _exception_backedge = true; }
1227 bool has_exception_backedge() const { return _exception_backedge; }
1228 #endif
1229
1230 static bool push_thru_add(PhaseGVN* phase, Node* z, const TypeInteger* tz, const TypeInteger*& rx, const TypeInteger*& ry,
1231 BasicType bt);
1232
1233 static Node* narrow_value(BasicType bt, Node* value, const Type* type, PhaseGVN* phase, bool transform_res);
1234 };
1235
1236 #endif // SHARE_OPTO_COMPILE_HPP