Mercurial > hg > graal-compiler
annotate src/share/vm/opto/compile.hpp @ 2142:8012aa3ccede
4926272: methodOopDesc::method_from_bcp is unsafe
Reviewed-by: coleenp, jrose, kvn, dcubed
author | never |
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date | Thu, 13 Jan 2011 22:15:41 -0800 |
parents | 2f644f85485d |
children | c7f3d0b4570f |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_OPTO_COMPILE_HPP |
26 #define SHARE_VM_OPTO_COMPILE_HPP | |
27 | |
28 #include "asm/codeBuffer.hpp" | |
29 #include "ci/compilerInterface.hpp" | |
30 #include "code/debugInfoRec.hpp" | |
31 #include "code/exceptionHandlerTable.hpp" | |
32 #include "compiler/compilerOracle.hpp" | |
33 #include "libadt/dict.hpp" | |
34 #include "libadt/port.hpp" | |
35 #include "libadt/vectset.hpp" | |
36 #include "memory/resourceArea.hpp" | |
37 #include "opto/idealGraphPrinter.hpp" | |
38 #include "opto/phase.hpp" | |
39 #include "opto/regmask.hpp" | |
40 #include "runtime/deoptimization.hpp" | |
41 #include "runtime/vmThread.hpp" | |
42 | |
0 | 43 class Block; |
44 class Bundle; | |
45 class C2Compiler; | |
46 class CallGenerator; | |
47 class ConnectionGraph; | |
48 class InlineTree; | |
49 class Int_Array; | |
50 class Matcher; | |
2008 | 51 class MachConstantNode; |
52 class MachConstantBaseNode; | |
0 | 53 class MachNode; |
2008 | 54 class MachOper; |
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55 class MachSafePointNode; |
0 | 56 class Node; |
57 class Node_Array; | |
58 class Node_Notes; | |
59 class OptoReg; | |
60 class PhaseCFG; | |
61 class PhaseGVN; | |
1172 | 62 class PhaseIterGVN; |
0 | 63 class PhaseRegAlloc; |
64 class PhaseCCP; | |
65 class PhaseCCP_DCE; | |
66 class RootNode; | |
67 class relocInfo; | |
68 class Scope; | |
69 class StartNode; | |
70 class SafePointNode; | |
71 class JVMState; | |
72 class TypeData; | |
73 class TypePtr; | |
74 class TypeFunc; | |
75 class Unique_Node_List; | |
76 class nmethod; | |
77 class WarmCallInfo; | |
78 | |
79 //------------------------------Compile---------------------------------------- | |
80 // This class defines a top-level Compiler invocation. | |
81 | |
82 class Compile : public Phase { | |
83 public: | |
84 // Fixed alias indexes. (See also MergeMemNode.) | |
85 enum { | |
86 AliasIdxTop = 1, // pseudo-index, aliases to nothing (used as sentinel value) | |
87 AliasIdxBot = 2, // pseudo-index, aliases to everything | |
88 AliasIdxRaw = 3 // hard-wired index for TypeRawPtr::BOTTOM | |
89 }; | |
90 | |
91 // Variant of TraceTime(NULL, &_t_accumulator, TimeCompiler); | |
92 // Integrated with logging. If logging is turned on, and dolog is true, | |
93 // then brackets are put into the log, with time stamps and node counts. | |
94 // (The time collection itself is always conditionalized on TimeCompiler.) | |
95 class TracePhase : public TraceTime { | |
96 private: | |
97 Compile* C; | |
98 CompileLog* _log; | |
99 public: | |
100 TracePhase(const char* name, elapsedTimer* accumulator, bool dolog); | |
101 ~TracePhase(); | |
102 }; | |
103 | |
104 // Information per category of alias (memory slice) | |
105 class AliasType { | |
106 private: | |
107 friend class Compile; | |
108 | |
109 int _index; // unique index, used with MergeMemNode | |
110 const TypePtr* _adr_type; // normalized address type | |
111 ciField* _field; // relevant instance field, or null if none | |
112 bool _is_rewritable; // false if the memory is write-once only | |
113 int _general_index; // if this is type is an instance, the general | |
114 // type that this is an instance of | |
115 | |
116 void Init(int i, const TypePtr* at); | |
117 | |
118 public: | |
119 int index() const { return _index; } | |
120 const TypePtr* adr_type() const { return _adr_type; } | |
121 ciField* field() const { return _field; } | |
122 bool is_rewritable() const { return _is_rewritable; } | |
123 bool is_volatile() const { return (_field ? _field->is_volatile() : false); } | |
124 int general_index() const { return (_general_index != 0) ? _general_index : _index; } | |
125 | |
126 void set_rewritable(bool z) { _is_rewritable = z; } | |
127 void set_field(ciField* f) { | |
128 assert(!_field,""); | |
129 _field = f; | |
130 if (f->is_final()) _is_rewritable = false; | |
131 } | |
132 | |
133 void print_on(outputStream* st) PRODUCT_RETURN; | |
134 }; | |
135 | |
136 enum { | |
137 logAliasCacheSize = 6, | |
138 AliasCacheSize = (1<<logAliasCacheSize) | |
139 }; | |
140 struct AliasCacheEntry { const TypePtr* _adr_type; int _index; }; // simple duple type | |
141 enum { | |
142 trapHistLength = methodDataOopDesc::_trap_hist_limit | |
143 }; | |
144 | |
2008 | 145 // Constant entry of the constant table. |
146 class Constant { | |
147 private: | |
148 BasicType _type; | |
149 jvalue _value; | |
150 int _offset; // offset of this constant (in bytes) relative to the constant table base. | |
151 bool _can_be_reused; // true (default) if the value can be shared with other users. | |
152 | |
153 public: | |
154 Constant() : _type(T_ILLEGAL), _offset(-1), _can_be_reused(true) { _value.l = 0; } | |
155 Constant(BasicType type, jvalue value, bool can_be_reused = true) : | |
156 _type(type), | |
157 _value(value), | |
158 _offset(-1), | |
159 _can_be_reused(can_be_reused) | |
160 {} | |
161 | |
162 bool operator==(const Constant& other); | |
163 | |
164 BasicType type() const { return _type; } | |
165 | |
166 jlong get_jlong() const { return _value.j; } | |
167 jfloat get_jfloat() const { return _value.f; } | |
168 jdouble get_jdouble() const { return _value.d; } | |
169 jobject get_jobject() const { return _value.l; } | |
170 | |
171 int offset() const { return _offset; } | |
172 void set_offset(int offset) { _offset = offset; } | |
173 | |
174 bool can_be_reused() const { return _can_be_reused; } | |
175 }; | |
176 | |
177 // Constant table. | |
178 class ConstantTable { | |
179 private: | |
180 GrowableArray<Constant> _constants; // Constants of this table. | |
181 int _size; // Size in bytes the emitted constant table takes (including padding). | |
182 int _table_base_offset; // Offset of the table base that gets added to the constant offsets. | |
183 | |
184 public: | |
185 ConstantTable() : | |
186 _size(-1), | |
187 _table_base_offset(-1) // We can use -1 here since the constant table is always bigger than 2 bytes (-(size / 2), see MachConstantBaseNode::emit). | |
188 {} | |
189 | |
190 int size() const { assert(_size != -1, "size not yet calculated"); return _size; } | |
191 | |
192 void set_table_base_offset(int x) { assert(_table_base_offset == -1, "set only once"); _table_base_offset = x; } | |
193 int table_base_offset() const { assert(_table_base_offset != -1, "table base offset not yet set"); return _table_base_offset; } | |
194 | |
195 void emit(CodeBuffer& cb); | |
196 | |
197 // Returns the offset of the last entry (the top) of the constant table. | |
198 int top_offset() const { assert(_constants.top().offset() != -1, "constant not yet bound"); return _constants.top().offset(); } | |
199 | |
200 void calculate_offsets_and_size(); | |
201 int find_offset(Constant& con) const; | |
202 | |
203 void add(Constant& con); | |
204 Constant add(BasicType type, jvalue value); | |
205 Constant add(MachOper* oper); | |
206 Constant add(jfloat f) { | |
207 jvalue value; value.f = f; | |
208 return add(T_FLOAT, value); | |
209 } | |
210 Constant add(jdouble d) { | |
211 jvalue value; value.d = d; | |
212 return add(T_DOUBLE, value); | |
213 } | |
214 | |
215 // Jump table | |
216 Constant allocate_jump_table(MachConstantNode* n); | |
217 void fill_jump_table(CodeBuffer& cb, MachConstantNode* n, GrowableArray<Label*> labels) const; | |
218 }; | |
219 | |
0 | 220 private: |
221 // Fixed parameters to this compilation. | |
222 const int _compile_id; | |
223 const bool _save_argument_registers; // save/restore arg regs for trampolines | |
224 const bool _subsume_loads; // Load can be matched as part of a larger op. | |
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225 const bool _do_escape_analysis; // Do escape analysis. |
0 | 226 ciMethod* _method; // The method being compiled. |
227 int _entry_bci; // entry bci for osr methods. | |
228 const TypeFunc* _tf; // My kind of signature | |
229 InlineTree* _ilt; // Ditto (temporary). | |
230 address _stub_function; // VM entry for stub being compiled, or NULL | |
231 const char* _stub_name; // Name of stub or adapter being compiled, or NULL | |
232 address _stub_entry_point; // Compile code entry for generated stub, or NULL | |
233 | |
234 // Control of this compilation. | |
235 int _num_loop_opts; // Number of iterations for doing loop optimiztions | |
236 int _max_inline_size; // Max inline size for this compilation | |
237 int _freq_inline_size; // Max hot method inline size for this compilation | |
238 int _fixed_slots; // count of frame slots not allocated by the register | |
239 // allocator i.e. locks, original deopt pc, etc. | |
240 // For deopt | |
241 int _orig_pc_slot; | |
242 int _orig_pc_slot_offset_in_bytes; | |
243 | |
244 int _major_progress; // Count of something big happening | |
245 bool _has_loops; // True if the method _may_ have some loops | |
246 bool _has_split_ifs; // True if the method _may_ have some split-if | |
247 bool _has_unsafe_access; // True if the method _may_ produce faults in unsafe loads or stores. | |
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248 bool _has_stringbuilder; // True StringBuffers or StringBuilders are allocated |
0 | 249 uint _trap_hist[trapHistLength]; // Cumulative traps |
250 bool _trap_can_recompile; // Have we emitted a recompiling trap? | |
251 uint _decompile_count; // Cumulative decompilation counts. | |
252 bool _do_inlining; // True if we intend to do inlining | |
253 bool _do_scheduling; // True if we intend to do scheduling | |
418 | 254 bool _do_freq_based_layout; // True if we intend to do frequency based block layout |
0 | 255 bool _do_count_invocations; // True if we generate code to count invocations |
256 bool _do_method_data_update; // True if we generate code to update methodDataOops | |
257 int _AliasLevel; // Locally-adjusted version of AliasLevel flag. | |
258 bool _print_assembly; // True if we should dump assembly code for this compilation | |
259 #ifndef PRODUCT | |
260 bool _trace_opto_output; | |
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261 bool _parsed_irreducible_loop; // True if ciTypeFlow detected irreducible loops during parsing |
0 | 262 #endif |
263 | |
1265 | 264 // JSR 292 |
265 bool _has_method_handle_invokes; // True if this method has MethodHandle invokes. | |
266 | |
0 | 267 // Compilation environment. |
268 Arena _comp_arena; // Arena with lifetime equivalent to Compile | |
269 ciEnv* _env; // CI interface | |
270 CompileLog* _log; // from CompilerThread | |
271 const char* _failure_reason; // for record_failure/failing pattern | |
272 GrowableArray<CallGenerator*>* _intrinsics; // List of intrinsics. | |
273 GrowableArray<Node*>* _macro_nodes; // List of nodes which need to be expanded before matching. | |
1172 | 274 GrowableArray<Node*>* _predicate_opaqs; // List of Opaque1 nodes for the loop predicates. |
0 | 275 ConnectionGraph* _congraph; |
276 #ifndef PRODUCT | |
277 IdealGraphPrinter* _printer; | |
278 #endif | |
279 | |
280 // Node management | |
281 uint _unique; // Counter for unique Node indices | |
282 debug_only(static int _debug_idx;) // Monotonic counter (not reset), use -XX:BreakAtNode=<idx> | |
283 Arena _node_arena; // Arena for new-space Nodes | |
284 Arena _old_arena; // Arena for old-space Nodes, lifetime during xform | |
285 RootNode* _root; // Unique root of compilation, or NULL after bail-out. | |
286 Node* _top; // Unique top node. (Reset by various phases.) | |
287 | |
288 Node* _immutable_memory; // Initial memory state | |
289 | |
290 Node* _recent_alloc_obj; | |
291 Node* _recent_alloc_ctl; | |
292 | |
2008 | 293 // Constant table |
294 ConstantTable _constant_table; // The constant table for this compile. | |
295 MachConstantBaseNode* _mach_constant_base_node; // Constant table base node singleton. | |
296 | |
297 | |
0 | 298 // Blocked array of debugging and profiling information, |
299 // tracked per node. | |
300 enum { _log2_node_notes_block_size = 8, | |
301 _node_notes_block_size = (1<<_log2_node_notes_block_size) | |
302 }; | |
303 GrowableArray<Node_Notes*>* _node_note_array; | |
304 Node_Notes* _default_node_notes; // default notes for new nodes | |
305 | |
306 // After parsing and every bulk phase we hang onto the Root instruction. | |
307 // The RootNode instruction is where the whole program begins. It produces | |
308 // the initial Control and BOTTOM for everybody else. | |
309 | |
310 // Type management | |
311 Arena _Compile_types; // Arena for all types | |
312 Arena* _type_arena; // Alias for _Compile_types except in Initialize_shared() | |
313 Dict* _type_dict; // Intern table | |
314 void* _type_hwm; // Last allocation (see Type::operator new/delete) | |
315 size_t _type_last_size; // Last allocation size (see Type::operator new/delete) | |
316 ciMethod* _last_tf_m; // Cache for | |
317 const TypeFunc* _last_tf; // TypeFunc::make | |
318 AliasType** _alias_types; // List of alias types seen so far. | |
319 int _num_alias_types; // Logical length of _alias_types | |
320 int _max_alias_types; // Physical length of _alias_types | |
321 AliasCacheEntry _alias_cache[AliasCacheSize]; // Gets aliases w/o data structure walking | |
322 | |
323 // Parsing, optimization | |
324 PhaseGVN* _initial_gvn; // Results of parse-time PhaseGVN | |
325 Unique_Node_List* _for_igvn; // Initial work-list for next round of Iterative GVN | |
326 WarmCallInfo* _warm_calls; // Sorted work-list for heat-based inlining. | |
327 | |
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328 GrowableArray<CallGenerator*> _late_inlines; // List of CallGenerators to be revisited after |
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329 // main parsing has finished. |
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330 |
0 | 331 // Matching, CFG layout, allocation, code generation |
332 PhaseCFG* _cfg; // Results of CFG finding | |
333 bool _select_24_bit_instr; // We selected an instruction with a 24-bit result | |
334 bool _in_24_bit_fp_mode; // We are emitting instructions with 24-bit results | |
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335 int _java_calls; // Number of java calls in the method |
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336 int _inner_loops; // Number of inner loops in the method |
0 | 337 Matcher* _matcher; // Engine to map ideal to machine instructions |
338 PhaseRegAlloc* _regalloc; // Results of register allocation. | |
339 int _frame_slots; // Size of total frame in stack slots | |
340 CodeOffsets _code_offsets; // Offsets into the code for various interesting entries | |
341 RegMask _FIRST_STACK_mask; // All stack slots usable for spills (depends on frame layout) | |
342 Arena* _indexSet_arena; // control IndexSet allocation within PhaseChaitin | |
343 void* _indexSet_free_block_list; // free list of IndexSet bit blocks | |
344 | |
345 uint _node_bundling_limit; | |
346 Bundle* _node_bundling_base; // Information for instruction bundling | |
347 | |
348 // Instruction bits passed off to the VM | |
349 int _method_size; // Size of nmethod code segment in bytes | |
350 CodeBuffer _code_buffer; // Where the code is assembled | |
351 int _first_block_size; // Size of unvalidated entry point code / OSR poison code | |
352 ExceptionHandlerTable _handler_table; // Table of native-code exception handlers | |
353 ImplicitExceptionTable _inc_table; // Table of implicit null checks in native code | |
354 OopMapSet* _oop_map_set; // Table of oop maps (one for each safepoint location) | |
355 static int _CompiledZap_count; // counter compared against CompileZap[First/Last] | |
356 BufferBlob* _scratch_buffer_blob; // For temporary code buffers. | |
357 relocInfo* _scratch_locs_memory; // For temporary code buffers. | |
2008 | 358 int _scratch_const_size; // For temporary code buffers. |
359 bool _in_scratch_emit_size; // true when in scratch_emit_size. | |
0 | 360 |
361 public: | |
362 // Accessors | |
363 | |
364 // The Compile instance currently active in this (compiler) thread. | |
365 static Compile* current() { | |
366 return (Compile*) ciEnv::current()->compiler_data(); | |
367 } | |
368 | |
369 // ID for this compilation. Useful for setting breakpoints in the debugger. | |
370 int compile_id() const { return _compile_id; } | |
371 | |
372 // Does this compilation allow instructions to subsume loads? User | |
373 // instructions that subsume a load may result in an unschedulable | |
374 // instruction sequence. | |
375 bool subsume_loads() const { return _subsume_loads; } | |
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376 // Do escape analysis. |
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377 bool do_escape_analysis() const { return _do_escape_analysis; } |
0 | 378 bool save_argument_registers() const { return _save_argument_registers; } |
379 | |
380 | |
381 // Other fixed compilation parameters. | |
382 ciMethod* method() const { return _method; } | |
383 int entry_bci() const { return _entry_bci; } | |
384 bool is_osr_compilation() const { return _entry_bci != InvocationEntryBci; } | |
385 bool is_method_compilation() const { return (_method != NULL && !_method->flags().is_native()); } | |
386 const TypeFunc* tf() const { assert(_tf!=NULL, ""); return _tf; } | |
387 void init_tf(const TypeFunc* tf) { assert(_tf==NULL, ""); _tf = tf; } | |
388 InlineTree* ilt() const { return _ilt; } | |
389 address stub_function() const { return _stub_function; } | |
390 const char* stub_name() const { return _stub_name; } | |
391 address stub_entry_point() const { return _stub_entry_point; } | |
392 | |
393 // Control of this compilation. | |
394 int fixed_slots() const { assert(_fixed_slots >= 0, ""); return _fixed_slots; } | |
395 void set_fixed_slots(int n) { _fixed_slots = n; } | |
396 int major_progress() const { return _major_progress; } | |
397 void set_major_progress() { _major_progress++; } | |
398 void clear_major_progress() { _major_progress = 0; } | |
399 int num_loop_opts() const { return _num_loop_opts; } | |
400 void set_num_loop_opts(int n) { _num_loop_opts = n; } | |
401 int max_inline_size() const { return _max_inline_size; } | |
402 void set_freq_inline_size(int n) { _freq_inline_size = n; } | |
403 int freq_inline_size() const { return _freq_inline_size; } | |
404 void set_max_inline_size(int n) { _max_inline_size = n; } | |
405 bool has_loops() const { return _has_loops; } | |
406 void set_has_loops(bool z) { _has_loops = z; } | |
407 bool has_split_ifs() const { return _has_split_ifs; } | |
408 void set_has_split_ifs(bool z) { _has_split_ifs = z; } | |
409 bool has_unsafe_access() const { return _has_unsafe_access; } | |
410 void set_has_unsafe_access(bool z) { _has_unsafe_access = z; } | |
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411 bool has_stringbuilder() const { return _has_stringbuilder; } |
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412 void set_has_stringbuilder(bool z) { _has_stringbuilder = z; } |
0 | 413 void set_trap_count(uint r, uint c) { assert(r < trapHistLength, "oob"); _trap_hist[r] = c; } |
414 uint trap_count(uint r) const { assert(r < trapHistLength, "oob"); return _trap_hist[r]; } | |
415 bool trap_can_recompile() const { return _trap_can_recompile; } | |
416 void set_trap_can_recompile(bool z) { _trap_can_recompile = z; } | |
417 uint decompile_count() const { return _decompile_count; } | |
418 void set_decompile_count(uint c) { _decompile_count = c; } | |
419 bool allow_range_check_smearing() const; | |
420 bool do_inlining() const { return _do_inlining; } | |
421 void set_do_inlining(bool z) { _do_inlining = z; } | |
422 bool do_scheduling() const { return _do_scheduling; } | |
423 void set_do_scheduling(bool z) { _do_scheduling = z; } | |
418 | 424 bool do_freq_based_layout() const{ return _do_freq_based_layout; } |
425 void set_do_freq_based_layout(bool z){ _do_freq_based_layout = z; } | |
0 | 426 bool do_count_invocations() const{ return _do_count_invocations; } |
427 void set_do_count_invocations(bool z){ _do_count_invocations = z; } | |
428 bool do_method_data_update() const { return _do_method_data_update; } | |
429 void set_do_method_data_update(bool z) { _do_method_data_update = z; } | |
430 int AliasLevel() const { return _AliasLevel; } | |
431 bool print_assembly() const { return _print_assembly; } | |
432 void set_print_assembly(bool z) { _print_assembly = z; } | |
433 // check the CompilerOracle for special behaviours for this compile | |
434 bool method_has_option(const char * option) { | |
435 return method() != NULL && method()->has_option(option); | |
436 } | |
437 #ifndef PRODUCT | |
438 bool trace_opto_output() const { return _trace_opto_output; } | |
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439 bool parsed_irreducible_loop() const { return _parsed_irreducible_loop; } |
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440 void set_parsed_irreducible_loop(bool z) { _parsed_irreducible_loop = z; } |
0 | 441 #endif |
442 | |
1265 | 443 // JSR 292 |
444 bool has_method_handle_invokes() const { return _has_method_handle_invokes; } | |
445 void set_has_method_handle_invokes(bool z) { _has_method_handle_invokes = z; } | |
446 | |
0 | 447 void begin_method() { |
448 #ifndef PRODUCT | |
449 if (_printer) _printer->begin_method(this); | |
450 #endif | |
451 } | |
452 void print_method(const char * name, int level = 1) { | |
453 #ifndef PRODUCT | |
454 if (_printer) _printer->print_method(this, name, level); | |
455 #endif | |
456 } | |
457 void end_method() { | |
458 #ifndef PRODUCT | |
459 if (_printer) _printer->end_method(); | |
460 #endif | |
461 } | |
462 | |
463 int macro_count() { return _macro_nodes->length(); } | |
1172 | 464 int predicate_count() { return _predicate_opaqs->length();} |
0 | 465 Node* macro_node(int idx) { return _macro_nodes->at(idx); } |
1172 | 466 Node* predicate_opaque1_node(int idx) { return _predicate_opaqs->at(idx);} |
0 | 467 ConnectionGraph* congraph() { return _congraph;} |
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468 void set_congraph(ConnectionGraph* congraph) { _congraph = congraph;} |
0 | 469 void add_macro_node(Node * n) { |
470 //assert(n->is_macro(), "must be a macro node"); | |
471 assert(!_macro_nodes->contains(n), " duplicate entry in expand list"); | |
472 _macro_nodes->append(n); | |
473 } | |
474 void remove_macro_node(Node * n) { | |
475 // this function may be called twice for a node so check | |
476 // that the node is in the array before attempting to remove it | |
477 if (_macro_nodes->contains(n)) | |
478 _macro_nodes->remove(n); | |
1172 | 479 // remove from _predicate_opaqs list also if it is there |
480 if (predicate_count() > 0 && _predicate_opaqs->contains(n)){ | |
481 _predicate_opaqs->remove(n); | |
482 } | |
0 | 483 } |
1172 | 484 void add_predicate_opaq(Node * n) { |
485 assert(!_predicate_opaqs->contains(n), " duplicate entry in predicate opaque1"); | |
486 assert(_macro_nodes->contains(n), "should have already been in macro list"); | |
487 _predicate_opaqs->append(n); | |
488 } | |
489 // remove the opaque nodes that protect the predicates so that the unused checks and | |
490 // uncommon traps will be eliminated from the graph. | |
491 void cleanup_loop_predicates(PhaseIterGVN &igvn); | |
0 | 492 |
493 // Compilation environment. | |
494 Arena* comp_arena() { return &_comp_arena; } | |
495 ciEnv* env() const { return _env; } | |
496 CompileLog* log() const { return _log; } | |
497 bool failing() const { return _env->failing() || _failure_reason != NULL; } | |
498 const char* failure_reason() { return _failure_reason; } | |
499 bool failure_reason_is(const char* r) { return (r==_failure_reason) || (r!=NULL && _failure_reason!=NULL && strcmp(r, _failure_reason)==0); } | |
500 | |
501 void record_failure(const char* reason); | |
502 void record_method_not_compilable(const char* reason, bool all_tiers = false) { | |
503 // All bailouts cover "all_tiers" when TieredCompilation is off. | |
504 if (!TieredCompilation) all_tiers = true; | |
505 env()->record_method_not_compilable(reason, all_tiers); | |
506 // Record failure reason. | |
507 record_failure(reason); | |
508 } | |
509 void record_method_not_compilable_all_tiers(const char* reason) { | |
510 record_method_not_compilable(reason, true); | |
511 } | |
512 bool check_node_count(uint margin, const char* reason) { | |
513 if (unique() + margin > (uint)MaxNodeLimit) { | |
514 record_method_not_compilable(reason); | |
515 return true; | |
516 } else { | |
517 return false; | |
518 } | |
519 } | |
520 | |
521 // Node management | |
522 uint unique() const { return _unique; } | |
523 uint next_unique() { return _unique++; } | |
524 void set_unique(uint i) { _unique = i; } | |
525 static int debug_idx() { return debug_only(_debug_idx)+0; } | |
526 static void set_debug_idx(int i) { debug_only(_debug_idx = i); } | |
527 Arena* node_arena() { return &_node_arena; } | |
528 Arena* old_arena() { return &_old_arena; } | |
529 RootNode* root() const { return _root; } | |
530 void set_root(RootNode* r) { _root = r; } | |
531 StartNode* start() const; // (Derived from root.) | |
532 void init_start(StartNode* s); | |
533 Node* immutable_memory(); | |
534 | |
535 Node* recent_alloc_ctl() const { return _recent_alloc_ctl; } | |
536 Node* recent_alloc_obj() const { return _recent_alloc_obj; } | |
537 void set_recent_alloc(Node* ctl, Node* obj) { | |
538 _recent_alloc_ctl = ctl; | |
539 _recent_alloc_obj = obj; | |
540 } | |
541 | |
2008 | 542 // Constant table |
543 ConstantTable& constant_table() { return _constant_table; } | |
544 | |
545 MachConstantBaseNode* mach_constant_base_node(); | |
546 bool has_mach_constant_base_node() const { return _mach_constant_base_node != NULL; } | |
547 | |
0 | 548 // Handy undefined Node |
549 Node* top() const { return _top; } | |
550 | |
551 // these are used by guys who need to know about creation and transformation of top: | |
552 Node* cached_top_node() { return _top; } | |
553 void set_cached_top_node(Node* tn); | |
554 | |
555 GrowableArray<Node_Notes*>* node_note_array() const { return _node_note_array; } | |
556 void set_node_note_array(GrowableArray<Node_Notes*>* arr) { _node_note_array = arr; } | |
557 Node_Notes* default_node_notes() const { return _default_node_notes; } | |
558 void set_default_node_notes(Node_Notes* n) { _default_node_notes = n; } | |
559 | |
560 Node_Notes* node_notes_at(int idx) { | |
561 return locate_node_notes(_node_note_array, idx, false); | |
562 } | |
563 inline bool set_node_notes_at(int idx, Node_Notes* value); | |
564 | |
565 // Copy notes from source to dest, if they exist. | |
566 // Overwrite dest only if source provides something. | |
567 // Return true if information was moved. | |
568 bool copy_node_notes_to(Node* dest, Node* source); | |
569 | |
570 // Workhorse function to sort out the blocked Node_Notes array: | |
571 inline Node_Notes* locate_node_notes(GrowableArray<Node_Notes*>* arr, | |
572 int idx, bool can_grow = false); | |
573 | |
574 void grow_node_notes(GrowableArray<Node_Notes*>* arr, int grow_by); | |
575 | |
576 // Type management | |
577 Arena* type_arena() { return _type_arena; } | |
578 Dict* type_dict() { return _type_dict; } | |
579 void* type_hwm() { return _type_hwm; } | |
580 size_t type_last_size() { return _type_last_size; } | |
581 int num_alias_types() { return _num_alias_types; } | |
582 | |
583 void init_type_arena() { _type_arena = &_Compile_types; } | |
584 void set_type_arena(Arena* a) { _type_arena = a; } | |
585 void set_type_dict(Dict* d) { _type_dict = d; } | |
586 void set_type_hwm(void* p) { _type_hwm = p; } | |
587 void set_type_last_size(size_t sz) { _type_last_size = sz; } | |
588 | |
589 const TypeFunc* last_tf(ciMethod* m) { | |
590 return (m == _last_tf_m) ? _last_tf : NULL; | |
591 } | |
592 void set_last_tf(ciMethod* m, const TypeFunc* tf) { | |
593 assert(m != NULL || tf == NULL, ""); | |
594 _last_tf_m = m; | |
595 _last_tf = tf; | |
596 } | |
597 | |
598 AliasType* alias_type(int idx) { assert(idx < num_alias_types(), "oob"); return _alias_types[idx]; } | |
599 AliasType* alias_type(const TypePtr* adr_type) { return find_alias_type(adr_type, false); } | |
600 bool have_alias_type(const TypePtr* adr_type); | |
601 AliasType* alias_type(ciField* field); | |
602 | |
603 int get_alias_index(const TypePtr* at) { return alias_type(at)->index(); } | |
604 const TypePtr* get_adr_type(uint aidx) { return alias_type(aidx)->adr_type(); } | |
605 int get_general_index(uint aidx) { return alias_type(aidx)->general_index(); } | |
606 | |
607 // Building nodes | |
608 void rethrow_exceptions(JVMState* jvms); | |
609 void return_values(JVMState* jvms); | |
610 JVMState* build_start_state(StartNode* start, const TypeFunc* tf); | |
611 | |
612 // Decide how to build a call. | |
613 // The profile factor is a discount to apply to this site's interp. profile. | |
614 CallGenerator* call_generator(ciMethod* call_method, int vtable_index, bool call_is_virtual, JVMState* jvms, bool allow_inline, float profile_factor); | |
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615 bool should_delay_inlining(ciMethod* call_method, JVMState* jvms); |
0 | 616 |
617 // Report if there were too many traps at a current method and bci. | |
618 // Report if a trap was recorded, and/or PerMethodTrapLimit was exceeded. | |
619 // If there is no MDO at all, report no trap unless told to assume it. | |
620 bool too_many_traps(ciMethod* method, int bci, Deoptimization::DeoptReason reason); | |
621 // This version, unspecific to a particular bci, asks if | |
622 // PerMethodTrapLimit was exceeded for all inlined methods seen so far. | |
623 bool too_many_traps(Deoptimization::DeoptReason reason, | |
624 // Privately used parameter for logging: | |
625 ciMethodData* logmd = NULL); | |
626 // Report if there were too many recompiles at a method and bci. | |
627 bool too_many_recompiles(ciMethod* method, int bci, Deoptimization::DeoptReason reason); | |
628 | |
629 // Parsing, optimization | |
630 PhaseGVN* initial_gvn() { return _initial_gvn; } | |
631 Unique_Node_List* for_igvn() { return _for_igvn; } | |
632 inline void record_for_igvn(Node* n); // Body is after class Unique_Node_List. | |
633 void set_initial_gvn(PhaseGVN *gvn) { _initial_gvn = gvn; } | |
634 void set_for_igvn(Unique_Node_List *for_igvn) { _for_igvn = for_igvn; } | |
635 | |
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636 // Replace n by nn using initial_gvn, calling hash_delete and |
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637 // record_for_igvn as needed. |
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638 void gvn_replace_by(Node* n, Node* nn); |
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639 |
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640 |
0 | 641 void identify_useful_nodes(Unique_Node_List &useful); |
642 void remove_useless_nodes (Unique_Node_List &useful); | |
643 | |
644 WarmCallInfo* warm_calls() const { return _warm_calls; } | |
645 void set_warm_calls(WarmCallInfo* l) { _warm_calls = l; } | |
646 WarmCallInfo* pop_warm_call(); | |
647 | |
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648 // Record this CallGenerator for inlining at the end of parsing. |
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649 void add_late_inline(CallGenerator* cg) { _late_inlines.push(cg); } |
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650 |
0 | 651 // Matching, CFG layout, allocation, code generation |
652 PhaseCFG* cfg() { return _cfg; } | |
653 bool select_24_bit_instr() const { return _select_24_bit_instr; } | |
654 bool in_24_bit_fp_mode() const { return _in_24_bit_fp_mode; } | |
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655 bool has_java_calls() const { return _java_calls > 0; } |
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656 int java_calls() const { return _java_calls; } |
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657 int inner_loops() const { return _inner_loops; } |
0 | 658 Matcher* matcher() { return _matcher; } |
659 PhaseRegAlloc* regalloc() { return _regalloc; } | |
660 int frame_slots() const { return _frame_slots; } | |
661 int frame_size_in_words() const; // frame_slots in units of the polymorphic 'words' | |
662 RegMask& FIRST_STACK_mask() { return _FIRST_STACK_mask; } | |
663 Arena* indexSet_arena() { return _indexSet_arena; } | |
664 void* indexSet_free_block_list() { return _indexSet_free_block_list; } | |
665 uint node_bundling_limit() { return _node_bundling_limit; } | |
666 Bundle* node_bundling_base() { return _node_bundling_base; } | |
667 void set_node_bundling_limit(uint n) { _node_bundling_limit = n; } | |
668 void set_node_bundling_base(Bundle* b) { _node_bundling_base = b; } | |
669 bool starts_bundle(const Node *n) const; | |
670 bool need_stack_bang(int frame_size_in_bytes) const; | |
671 bool need_register_stack_bang() const; | |
672 | |
673 void set_matcher(Matcher* m) { _matcher = m; } | |
674 //void set_regalloc(PhaseRegAlloc* ra) { _regalloc = ra; } | |
675 void set_indexSet_arena(Arena* a) { _indexSet_arena = a; } | |
676 void set_indexSet_free_block_list(void* p) { _indexSet_free_block_list = p; } | |
677 | |
678 // Remember if this compilation changes hardware mode to 24-bit precision | |
679 void set_24_bit_selection_and_mode(bool selection, bool mode) { | |
680 _select_24_bit_instr = selection; | |
681 _in_24_bit_fp_mode = mode; | |
682 } | |
683 | |
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684 void set_java_calls(int z) { _java_calls = z; } |
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685 void set_inner_loops(int z) { _inner_loops = z; } |
0 | 686 |
687 // Instruction bits passed off to the VM | |
688 int code_size() { return _method_size; } | |
689 CodeBuffer* code_buffer() { return &_code_buffer; } | |
690 int first_block_size() { return _first_block_size; } | |
691 void set_frame_complete(int off) { _code_offsets.set_value(CodeOffsets::Frame_Complete, off); } | |
692 ExceptionHandlerTable* handler_table() { return &_handler_table; } | |
693 ImplicitExceptionTable* inc_table() { return &_inc_table; } | |
694 OopMapSet* oop_map_set() { return _oop_map_set; } | |
695 DebugInformationRecorder* debug_info() { return env()->debug_info(); } | |
696 Dependencies* dependencies() { return env()->dependencies(); } | |
697 static int CompiledZap_count() { return _CompiledZap_count; } | |
698 BufferBlob* scratch_buffer_blob() { return _scratch_buffer_blob; } | |
2008 | 699 void init_scratch_buffer_blob(int const_size); |
700 void clear_scratch_buffer_blob(); | |
0 | 701 void set_scratch_buffer_blob(BufferBlob* b) { _scratch_buffer_blob = b; } |
702 relocInfo* scratch_locs_memory() { return _scratch_locs_memory; } | |
703 void set_scratch_locs_memory(relocInfo* b) { _scratch_locs_memory = b; } | |
704 | |
705 // emit to scratch blob, report resulting size | |
706 uint scratch_emit_size(const Node* n); | |
2008 | 707 void set_in_scratch_emit_size(bool x) { _in_scratch_emit_size = x; } |
708 bool in_scratch_emit_size() const { return _in_scratch_emit_size; } | |
0 | 709 |
710 enum ScratchBufferBlob { | |
711 MAX_inst_size = 1024, | |
712 MAX_locs_size = 128, // number of relocInfo elements | |
713 MAX_const_size = 128, | |
714 MAX_stubs_size = 128 | |
715 }; | |
716 | |
717 // Major entry point. Given a Scope, compile the associated method. | |
718 // For normal compilations, entry_bci is InvocationEntryBci. For on stack | |
719 // replacement, entry_bci indicates the bytecode for which to compile a | |
720 // continuation. | |
721 Compile(ciEnv* ci_env, C2Compiler* compiler, ciMethod* target, | |
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722 int entry_bci, bool subsume_loads, bool do_escape_analysis); |
0 | 723 |
724 // Second major entry point. From the TypeFunc signature, generate code | |
725 // to pass arguments from the Java calling convention to the C calling | |
726 // convention. | |
727 Compile(ciEnv* ci_env, const TypeFunc *(*gen)(), | |
728 address stub_function, const char *stub_name, | |
729 int is_fancy_jump, bool pass_tls, | |
730 bool save_arg_registers, bool return_pc); | |
731 | |
732 // From the TypeFunc signature, generate code to pass arguments | |
733 // from Compiled calling convention to Interpreter's calling convention | |
734 void Generate_Compiled_To_Interpreter_Graph(const TypeFunc *tf, address interpreter_entry); | |
735 | |
736 // From the TypeFunc signature, generate code to pass arguments | |
737 // from Interpreter's calling convention to Compiler's calling convention | |
738 void Generate_Interpreter_To_Compiled_Graph(const TypeFunc *tf); | |
739 | |
740 // Are we compiling a method? | |
741 bool has_method() { return method() != NULL; } | |
742 | |
743 // Maybe print some information about this compile. | |
744 void print_compile_messages(); | |
745 | |
746 // Final graph reshaping, a post-pass after the regular optimizer is done. | |
747 bool final_graph_reshaping(); | |
748 | |
749 // returns true if adr is completely contained in the given alias category | |
750 bool must_alias(const TypePtr* adr, int alias_idx); | |
751 | |
752 // returns true if adr overlaps with the given alias category | |
753 bool can_alias(const TypePtr* adr, int alias_idx); | |
754 | |
755 // Driver for converting compiler's IR into machine code bits | |
756 void Output(); | |
757 | |
758 // Accessors for node bundling info. | |
759 Bundle* node_bundling(const Node *n); | |
760 bool valid_bundle_info(const Node *n); | |
761 | |
762 // Schedule and Bundle the instructions | |
763 void ScheduleAndBundle(); | |
764 | |
765 // Build OopMaps for each GC point | |
766 void BuildOopMaps(); | |
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767 |
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768 // Append debug info for the node "local" at safepoint node "sfpt" to the |
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769 // "array", May also consult and add to "objs", which describes the |
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770 // scalar-replaced objects. |
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771 void FillLocArray( int idx, MachSafePointNode* sfpt, |
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772 Node *local, GrowableArray<ScopeValue*> *array, |
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773 GrowableArray<ScopeValue*> *objs ); |
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774 |
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775 // If "objs" contains an ObjectValue whose id is "id", returns it, else NULL. |
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776 static ObjectValue* sv_for_node_id(GrowableArray<ScopeValue*> *objs, int id); |
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777 // Requres that "objs" does not contains an ObjectValue whose id matches |
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778 // that of "sv. Appends "sv". |
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779 static void set_sv_for_object_node(GrowableArray<ScopeValue*> *objs, |
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780 ObjectValue* sv ); |
0 | 781 |
782 // Process an OopMap Element while emitting nodes | |
783 void Process_OopMap_Node(MachNode *mach, int code_offset); | |
784 | |
785 // Write out basic block data to code buffer | |
786 void Fill_buffer(); | |
787 | |
788 // Determine which variable sized branches can be shortened | |
2008 | 789 void Shorten_branches(Label *labels, int& code_size, int& reloc_size, int& stub_size); |
0 | 790 |
791 // Compute the size of first NumberOfLoopInstrToAlign instructions | |
792 // at the head of a loop. | |
793 void compute_loop_first_inst_sizes(); | |
794 | |
795 // Compute the information for the exception tables | |
796 void FillExceptionTables(uint cnt, uint *call_returns, uint *inct_starts, Label *blk_labels); | |
797 | |
798 // Stack slots that may be unused by the calling convention but must | |
799 // otherwise be preserved. On Intel this includes the return address. | |
800 // On PowerPC it includes the 4 words holding the old TOC & LR glue. | |
801 uint in_preserve_stack_slots(); | |
802 | |
803 // "Top of Stack" slots that may be unused by the calling convention but must | |
804 // otherwise be preserved. | |
805 // On Intel these are not necessary and the value can be zero. | |
806 // On Sparc this describes the words reserved for storing a register window | |
807 // when an interrupt occurs. | |
808 static uint out_preserve_stack_slots(); | |
809 | |
810 // Number of outgoing stack slots killed above the out_preserve_stack_slots | |
811 // for calls to C. Supports the var-args backing area for register parms. | |
812 uint varargs_C_out_slots_killed() const; | |
813 | |
814 // Number of Stack Slots consumed by a synchronization entry | |
815 int sync_stack_slots() const; | |
816 | |
817 // Compute the name of old_SP. See <arch>.ad for frame layout. | |
818 OptoReg::Name compute_old_SP(); | |
819 | |
820 #ifdef ENABLE_ZAP_DEAD_LOCALS | |
821 static bool is_node_getting_a_safepoint(Node*); | |
822 void Insert_zap_nodes(); | |
823 Node* call_zap_node(MachSafePointNode* n, int block_no); | |
824 #endif | |
825 | |
826 private: | |
827 // Phase control: | |
828 void Init(int aliaslevel); // Prepare for a single compilation | |
829 int Inline_Warm(); // Find more inlining work. | |
830 void Finish_Warm(); // Give up on further inlines. | |
831 void Optimize(); // Given a graph, optimize it | |
832 void Code_Gen(); // Generate code from a graph | |
833 | |
834 // Management of the AliasType table. | |
835 void grow_alias_types(); | |
836 AliasCacheEntry* probe_alias_cache(const TypePtr* adr_type); | |
837 const TypePtr *flatten_alias_type(const TypePtr* adr_type) const; | |
838 AliasType* find_alias_type(const TypePtr* adr_type, bool no_create); | |
839 | |
840 void verify_top(Node*) const PRODUCT_RETURN; | |
841 | |
842 // Intrinsic setup. | |
843 void register_library_intrinsics(); // initializer | |
844 CallGenerator* make_vm_intrinsic(ciMethod* m, bool is_virtual); // constructor | |
845 int intrinsic_insertion_index(ciMethod* m, bool is_virtual); // helper | |
846 CallGenerator* find_intrinsic(ciMethod* m, bool is_virtual); // query fn | |
847 void register_intrinsic(CallGenerator* cg); // update fn | |
848 | |
849 #ifndef PRODUCT | |
850 static juint _intrinsic_hist_count[vmIntrinsics::ID_LIMIT]; | |
851 static jubyte _intrinsic_hist_flags[vmIntrinsics::ID_LIMIT]; | |
852 #endif | |
853 | |
854 public: | |
855 | |
856 // Note: Histogram array size is about 1 Kb. | |
857 enum { // flag bits: | |
858 _intrinsic_worked = 1, // succeeded at least once | |
859 _intrinsic_failed = 2, // tried it but it failed | |
860 _intrinsic_disabled = 4, // was requested but disabled (e.g., -XX:-InlineUnsafeOps) | |
861 _intrinsic_virtual = 8, // was seen in the virtual form (rare) | |
862 _intrinsic_both = 16 // was seen in the non-virtual form (usual) | |
863 }; | |
864 // Update histogram. Return boolean if this is a first-time occurrence. | |
865 static bool gather_intrinsic_statistics(vmIntrinsics::ID id, | |
866 bool is_virtual, int flags) PRODUCT_RETURN0; | |
867 static void print_intrinsic_statistics() PRODUCT_RETURN; | |
868 | |
869 // Graph verification code | |
870 // Walk the node list, verifying that there is a one-to-one | |
871 // correspondence between Use-Def edges and Def-Use edges | |
872 // The option no_dead_code enables stronger checks that the | |
873 // graph is strongly connected from root in both directions. | |
874 void verify_graph_edges(bool no_dead_code = false) PRODUCT_RETURN; | |
875 | |
876 // Print bytecodes, including the scope inlining tree | |
877 void print_codes(); | |
878 | |
879 // End-of-run dumps. | |
880 static void print_statistics() PRODUCT_RETURN; | |
881 | |
882 // Dump formatted assembly | |
883 void dump_asm(int *pcs = NULL, uint pc_limit = 0) PRODUCT_RETURN; | |
884 void dump_pc(int *pcs, int pc_limit, Node *n); | |
885 | |
886 // Verify ADLC assumptions during startup | |
887 static void adlc_verification() PRODUCT_RETURN; | |
888 | |
889 // Definitions of pd methods | |
890 static void pd_compiler2_init(); | |
891 }; | |
1972 | 892 |
893 #endif // SHARE_VM_OPTO_COMPILE_HPP |