Mercurial > hg > truffle
annotate src/share/vm/opto/compile.hpp @ 17801:2444afebe07b
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Reviewed-by: kvn
Contributed-by: axel.siebenborn@sap.com
author | goetz |
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date | Thu, 20 Feb 2014 10:48:57 +0100 |
parents | a9becfeecd1b |
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rev | line source |
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0 | 1 /* |
10405 | 2 * Copyright (c) 1997, 2013, 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" | |
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33 #include "compiler/compileBroker.hpp" |
1972 | 34 #include "libadt/dict.hpp" |
35 #include "libadt/port.hpp" | |
36 #include "libadt/vectset.hpp" | |
37 #include "memory/resourceArea.hpp" | |
38 #include "opto/idealGraphPrinter.hpp" | |
10405 | 39 #include "opto/phasetype.hpp" |
1972 | 40 #include "opto/phase.hpp" |
41 #include "opto/regmask.hpp" | |
42 #include "runtime/deoptimization.hpp" | |
43 #include "runtime/vmThread.hpp" | |
10405 | 44 #include "trace/tracing.hpp" |
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45 #include "utilities/ticks.hpp" |
1972 | 46 |
0 | 47 class Block; |
48 class Bundle; | |
49 class C2Compiler; | |
50 class CallGenerator; | |
51 class ConnectionGraph; | |
52 class InlineTree; | |
53 class Int_Array; | |
54 class Matcher; | |
2008 | 55 class MachConstantNode; |
56 class MachConstantBaseNode; | |
0 | 57 class MachNode; |
2008 | 58 class MachOper; |
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59 class MachSafePointNode; |
0 | 60 class Node; |
61 class Node_Array; | |
62 class Node_Notes; | |
63 class OptoReg; | |
64 class PhaseCFG; | |
65 class PhaseGVN; | |
1172 | 66 class PhaseIterGVN; |
0 | 67 class PhaseRegAlloc; |
68 class PhaseCCP; | |
69 class PhaseCCP_DCE; | |
70 class RootNode; | |
71 class relocInfo; | |
72 class Scope; | |
73 class StartNode; | |
74 class SafePointNode; | |
75 class JVMState; | |
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76 class Type; |
0 | 77 class TypeData; |
78 class TypePtr; | |
7478 | 79 class TypeOopPtr; |
0 | 80 class TypeFunc; |
81 class Unique_Node_List; | |
82 class nmethod; | |
83 class WarmCallInfo; | |
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84 class Node_Stack; |
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85 struct Final_Reshape_Counts; |
0 | 86 |
87 //------------------------------Compile---------------------------------------- | |
88 // This class defines a top-level Compiler invocation. | |
89 | |
90 class Compile : public Phase { | |
3939 | 91 friend class VMStructs; |
92 | |
0 | 93 public: |
94 // Fixed alias indexes. (See also MergeMemNode.) | |
95 enum { | |
96 AliasIdxTop = 1, // pseudo-index, aliases to nothing (used as sentinel value) | |
97 AliasIdxBot = 2, // pseudo-index, aliases to everything | |
98 AliasIdxRaw = 3 // hard-wired index for TypeRawPtr::BOTTOM | |
99 }; | |
100 | |
101 // Variant of TraceTime(NULL, &_t_accumulator, TimeCompiler); | |
102 // Integrated with logging. If logging is turned on, and dolog is true, | |
103 // then brackets are put into the log, with time stamps and node counts. | |
104 // (The time collection itself is always conditionalized on TimeCompiler.) | |
105 class TracePhase : public TraceTime { | |
106 private: | |
107 Compile* C; | |
108 CompileLog* _log; | |
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109 const char* _phase_name; |
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110 bool _dolog; |
0 | 111 public: |
112 TracePhase(const char* name, elapsedTimer* accumulator, bool dolog); | |
113 ~TracePhase(); | |
114 }; | |
115 | |
116 // Information per category of alias (memory slice) | |
117 class AliasType { | |
118 private: | |
119 friend class Compile; | |
120 | |
121 int _index; // unique index, used with MergeMemNode | |
122 const TypePtr* _adr_type; // normalized address type | |
123 ciField* _field; // relevant instance field, or null if none | |
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124 const Type* _element; // relevant array element type, or null if none |
0 | 125 bool _is_rewritable; // false if the memory is write-once only |
126 int _general_index; // if this is type is an instance, the general | |
127 // type that this is an instance of | |
128 | |
129 void Init(int i, const TypePtr* at); | |
130 | |
131 public: | |
132 int index() const { return _index; } | |
133 const TypePtr* adr_type() const { return _adr_type; } | |
134 ciField* field() const { return _field; } | |
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135 const Type* element() const { return _element; } |
0 | 136 bool is_rewritable() const { return _is_rewritable; } |
137 bool is_volatile() const { return (_field ? _field->is_volatile() : false); } | |
138 int general_index() const { return (_general_index != 0) ? _general_index : _index; } | |
139 | |
140 void set_rewritable(bool z) { _is_rewritable = z; } | |
141 void set_field(ciField* f) { | |
142 assert(!_field,""); | |
143 _field = f; | |
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144 if (f->is_final() || f->is_stable()) { |
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145 // In the case of @Stable, multiple writes are possible but may be assumed to be no-ops. |
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146 _is_rewritable = false; |
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147 } |
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148 } |
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149 void set_element(const Type* e) { |
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150 assert(_element == NULL, ""); |
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151 _element = e; |
0 | 152 } |
153 | |
154 void print_on(outputStream* st) PRODUCT_RETURN; | |
155 }; | |
156 | |
157 enum { | |
158 logAliasCacheSize = 6, | |
159 AliasCacheSize = (1<<logAliasCacheSize) | |
160 }; | |
161 struct AliasCacheEntry { const TypePtr* _adr_type; int _index; }; // simple duple type | |
162 enum { | |
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163 trapHistLength = MethodData::_trap_hist_limit |
0 | 164 }; |
165 | |
2008 | 166 // Constant entry of the constant table. |
167 class Constant { | |
168 private: | |
169 BasicType _type; | |
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170 union { |
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171 jvalue _value; |
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172 Metadata* _metadata; |
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173 } _v; |
2008 | 174 int _offset; // offset of this constant (in bytes) relative to the constant table base. |
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175 float _freq; |
2008 | 176 bool _can_be_reused; // true (default) if the value can be shared with other users. |
177 | |
178 public: | |
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179 Constant() : _type(T_ILLEGAL), _offset(-1), _freq(0.0f), _can_be_reused(true) { _v._value.l = 0; } |
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180 Constant(BasicType type, jvalue value, float freq = 0.0f, bool can_be_reused = true) : |
2008 | 181 _type(type), |
182 _offset(-1), | |
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183 _freq(freq), |
2008 | 184 _can_be_reused(can_be_reused) |
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185 { |
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186 assert(type != T_METADATA, "wrong constructor"); |
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187 _v._value = value; |
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188 } |
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189 Constant(Metadata* metadata, bool can_be_reused = true) : |
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190 _type(T_METADATA), |
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191 _offset(-1), |
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192 _freq(0.0f), |
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193 _can_be_reused(can_be_reused) |
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194 { |
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195 _v._metadata = metadata; |
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196 } |
2008 | 197 |
198 bool operator==(const Constant& other); | |
199 | |
200 BasicType type() const { return _type; } | |
201 | |
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202 jlong get_jlong() const { return _v._value.j; } |
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203 jfloat get_jfloat() const { return _v._value.f; } |
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204 jdouble get_jdouble() const { return _v._value.d; } |
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205 jobject get_jobject() const { return _v._value.l; } |
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206 |
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207 Metadata* get_metadata() const { return _v._metadata; } |
2008 | 208 |
209 int offset() const { return _offset; } | |
210 void set_offset(int offset) { _offset = offset; } | |
211 | |
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212 float freq() const { return _freq; } |
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213 void inc_freq(float freq) { _freq += freq; } |
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214 |
2008 | 215 bool can_be_reused() const { return _can_be_reused; } |
216 }; | |
217 | |
218 // Constant table. | |
219 class ConstantTable { | |
220 private: | |
221 GrowableArray<Constant> _constants; // Constants of this table. | |
222 int _size; // Size in bytes the emitted constant table takes (including padding). | |
223 int _table_base_offset; // Offset of the table base that gets added to the constant offsets. | |
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224 int _nof_jump_tables; // Number of jump-tables in this constant table. |
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225 |
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226 static int qsort_comparator(Constant* a, Constant* b); |
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227 |
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228 // We use negative frequencies to keep the order of the |
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229 // jump-tables in which they were added. Otherwise we get into |
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230 // trouble with relocation. |
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231 float next_jump_table_freq() { return -1.0f * (++_nof_jump_tables); } |
2008 | 232 |
233 public: | |
234 ConstantTable() : | |
235 _size(-1), | |
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236 _table_base_offset(-1), // We can use -1 here since the constant table is always bigger than 2 bytes (-(size / 2), see MachConstantBaseNode::emit). |
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237 _nof_jump_tables(0) |
2008 | 238 {} |
239 | |
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240 int size() const { assert(_size != -1, "not calculated yet"); return _size; } |
2008 | 241 |
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242 int calculate_table_base_offset() const; // AD specific |
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243 void set_table_base_offset(int x) { assert(_table_base_offset == -1 || x == _table_base_offset, "can't change"); _table_base_offset = x; } |
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244 int table_base_offset() const { assert(_table_base_offset != -1, "not set yet"); return _table_base_offset; } |
2008 | 245 |
246 void emit(CodeBuffer& cb); | |
247 | |
248 // Returns the offset of the last entry (the top) of the constant table. | |
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249 int top_offset() const { assert(_constants.top().offset() != -1, "not bound yet"); return _constants.top().offset(); } |
2008 | 250 |
251 void calculate_offsets_and_size(); | |
252 int find_offset(Constant& con) const; | |
253 | |
254 void add(Constant& con); | |
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255 Constant add(MachConstantNode* n, BasicType type, jvalue value); |
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256 Constant add(Metadata* metadata); |
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257 Constant add(MachConstantNode* n, MachOper* oper); |
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258 Constant add(MachConstantNode* n, jfloat f) { |
2008 | 259 jvalue value; value.f = f; |
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260 return add(n, T_FLOAT, value); |
2008 | 261 } |
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262 Constant add(MachConstantNode* n, jdouble d) { |
2008 | 263 jvalue value; value.d = d; |
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264 return add(n, T_DOUBLE, value); |
2008 | 265 } |
266 | |
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267 // Jump-table |
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268 Constant add_jump_table(MachConstantNode* n); |
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269 void fill_jump_table(CodeBuffer& cb, MachConstantNode* n, GrowableArray<Label*> labels) const; |
2008 | 270 }; |
271 | |
0 | 272 private: |
273 // Fixed parameters to this compilation. | |
274 const int _compile_id; | |
275 const bool _save_argument_registers; // save/restore arg regs for trampolines | |
276 const bool _subsume_loads; // Load can be matched as part of a larger op. | |
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277 const bool _do_escape_analysis; // Do escape analysis. |
10278 | 278 const bool _eliminate_boxing; // Do boxing elimination. |
0 | 279 ciMethod* _method; // The method being compiled. |
280 int _entry_bci; // entry bci for osr methods. | |
281 const TypeFunc* _tf; // My kind of signature | |
282 InlineTree* _ilt; // Ditto (temporary). | |
283 address _stub_function; // VM entry for stub being compiled, or NULL | |
284 const char* _stub_name; // Name of stub or adapter being compiled, or NULL | |
285 address _stub_entry_point; // Compile code entry for generated stub, or NULL | |
286 | |
287 // Control of this compilation. | |
288 int _num_loop_opts; // Number of iterations for doing loop optimiztions | |
289 int _max_inline_size; // Max inline size for this compilation | |
290 int _freq_inline_size; // Max hot method inline size for this compilation | |
291 int _fixed_slots; // count of frame slots not allocated by the register | |
292 // allocator i.e. locks, original deopt pc, etc. | |
293 // For deopt | |
294 int _orig_pc_slot; | |
295 int _orig_pc_slot_offset_in_bytes; | |
296 | |
297 int _major_progress; // Count of something big happening | |
7473 | 298 bool _inlining_progress; // progress doing incremental inlining? |
299 bool _inlining_incrementally;// Are we doing incremental inlining (post parse) | |
0 | 300 bool _has_loops; // True if the method _may_ have some loops |
301 bool _has_split_ifs; // True if the method _may_ have some split-if | |
302 bool _has_unsafe_access; // True if the method _may_ produce faults in unsafe loads or stores. | |
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303 bool _has_stringbuilder; // True StringBuffers or StringBuilders are allocated |
10278 | 304 bool _has_boxed_value; // True if a boxed object is allocated |
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305 int _max_vector_size; // Maximum size of generated vectors |
0 | 306 uint _trap_hist[trapHistLength]; // Cumulative traps |
307 bool _trap_can_recompile; // Have we emitted a recompiling trap? | |
308 uint _decompile_count; // Cumulative decompilation counts. | |
309 bool _do_inlining; // True if we intend to do inlining | |
310 bool _do_scheduling; // True if we intend to do scheduling | |
418 | 311 bool _do_freq_based_layout; // True if we intend to do frequency based block layout |
0 | 312 bool _do_count_invocations; // True if we generate code to count invocations |
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313 bool _do_method_data_update; // True if we generate code to update MethodData*s |
0 | 314 int _AliasLevel; // Locally-adjusted version of AliasLevel flag. |
315 bool _print_assembly; // True if we should dump assembly code for this compilation | |
12295 | 316 bool _print_inlining; // True if we should print inlining for this compilation |
317 bool _print_intrinsics; // True if we should print intrinsics for this compilation | |
0 | 318 #ifndef PRODUCT |
319 bool _trace_opto_output; | |
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320 bool _parsed_irreducible_loop; // True if ciTypeFlow detected irreducible loops during parsing |
0 | 321 #endif |
322 | |
1265 | 323 // JSR 292 |
324 bool _has_method_handle_invokes; // True if this method has MethodHandle invokes. | |
325 | |
0 | 326 // Compilation environment. |
327 Arena _comp_arena; // Arena with lifetime equivalent to Compile | |
328 ciEnv* _env; // CI interface | |
329 CompileLog* _log; // from CompilerThread | |
330 const char* _failure_reason; // for record_failure/failing pattern | |
331 GrowableArray<CallGenerator*>* _intrinsics; // List of intrinsics. | |
332 GrowableArray<Node*>* _macro_nodes; // List of nodes which need to be expanded before matching. | |
1172 | 333 GrowableArray<Node*>* _predicate_opaqs; // List of Opaque1 nodes for the loop predicates. |
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334 GrowableArray<Node*>* _expensive_nodes; // List of nodes that are expensive to compute and that we'd better not let the GVN freely common |
0 | 335 ConnectionGraph* _congraph; |
336 #ifndef PRODUCT | |
337 IdealGraphPrinter* _printer; | |
338 #endif | |
339 | |
10405 | 340 |
0 | 341 // Node management |
342 uint _unique; // Counter for unique Node indices | |
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343 VectorSet _dead_node_list; // Set of dead nodes |
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344 uint _dead_node_count; // Number of dead nodes; VectorSet::Size() is O(N). |
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345 // So use this to keep count and make the call O(1). |
0 | 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 | |
2008 | 357 // Constant table |
358 ConstantTable _constant_table; // The constant table for this compile. | |
359 MachConstantBaseNode* _mach_constant_base_node; // Constant table base node singleton. | |
360 | |
361 | |
0 | 362 // Blocked array of debugging and profiling information, |
363 // tracked per node. | |
364 enum { _log2_node_notes_block_size = 8, | |
365 _node_notes_block_size = (1<<_log2_node_notes_block_size) | |
366 }; | |
367 GrowableArray<Node_Notes*>* _node_note_array; | |
368 Node_Notes* _default_node_notes; // default notes for new nodes | |
369 | |
370 // After parsing and every bulk phase we hang onto the Root instruction. | |
371 // The RootNode instruction is where the whole program begins. It produces | |
372 // the initial Control and BOTTOM for everybody else. | |
373 | |
374 // Type management | |
375 Arena _Compile_types; // Arena for all types | |
376 Arena* _type_arena; // Alias for _Compile_types except in Initialize_shared() | |
377 Dict* _type_dict; // Intern table | |
378 void* _type_hwm; // Last allocation (see Type::operator new/delete) | |
379 size_t _type_last_size; // Last allocation size (see Type::operator new/delete) | |
380 ciMethod* _last_tf_m; // Cache for | |
381 const TypeFunc* _last_tf; // TypeFunc::make | |
382 AliasType** _alias_types; // List of alias types seen so far. | |
383 int _num_alias_types; // Logical length of _alias_types | |
384 int _max_alias_types; // Physical length of _alias_types | |
385 AliasCacheEntry _alias_cache[AliasCacheSize]; // Gets aliases w/o data structure walking | |
386 | |
387 // Parsing, optimization | |
388 PhaseGVN* _initial_gvn; // Results of parse-time PhaseGVN | |
389 Unique_Node_List* _for_igvn; // Initial work-list for next round of Iterative GVN | |
390 WarmCallInfo* _warm_calls; // Sorted work-list for heat-based inlining. | |
391 | |
7473 | 392 GrowableArray<CallGenerator*> _late_inlines; // List of CallGenerators to be revisited after |
393 // main parsing has finished. | |
394 GrowableArray<CallGenerator*> _string_late_inlines; // same but for string operations | |
395 | |
10278 | 396 GrowableArray<CallGenerator*> _boxing_late_inlines; // same but for boxing operations |
397 | |
7473 | 398 int _late_inlines_pos; // Where in the queue should the next late inlining candidate go (emulate depth first inlining) |
399 uint _number_of_mh_late_inlines; // number of method handle late inlining still pending | |
400 | |
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401 |
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402 // Inlining may not happen in parse order which would make |
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403 // PrintInlining output confusing. Keep track of PrintInlining |
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404 // pieces in order. |
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405 class PrintInliningBuffer : public ResourceObj { |
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406 private: |
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407 CallGenerator* _cg; |
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408 stringStream* _ss; |
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409 |
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410 public: |
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411 PrintInliningBuffer() |
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412 : _cg(NULL) { _ss = new stringStream(); } |
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413 |
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414 stringStream* ss() const { return _ss; } |
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415 CallGenerator* cg() const { return _cg; } |
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416 void set_cg(CallGenerator* cg) { _cg = cg; } |
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417 }; |
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418 |
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419 GrowableArray<PrintInliningBuffer>* _print_inlining_list; |
12295 | 420 int _print_inlining_idx; |
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421 |
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422 // Only keep nodes in the expensive node list that need to be optimized |
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423 void cleanup_expensive_nodes(PhaseIterGVN &igvn); |
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424 // Use for sorting expensive nodes to bring similar nodes together |
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425 static int cmp_expensive_nodes(Node** n1, Node** n2); |
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426 // Expensive nodes list already sorted? |
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427 bool expensive_nodes_sorted() const; |
12966 | 428 // Remove the speculative part of types and clean up the graph |
429 void remove_speculative_types(PhaseIterGVN &igvn); | |
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430 |
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431 // Are we within a PreserveJVMState block? |
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432 int _preserve_jvm_state; |
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433 |
17622 | 434 void* _replay_inline_data; // Pointer to data loaded from file |
435 | |
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436 public: |
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437 |
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438 outputStream* print_inlining_stream() const { |
12295 | 439 return _print_inlining_list->adr_at(_print_inlining_idx)->ss(); |
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440 } |
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441 |
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442 void print_inlining_skip(CallGenerator* cg) { |
12295 | 443 if (_print_inlining) { |
444 _print_inlining_list->adr_at(_print_inlining_idx)->set_cg(cg); | |
445 _print_inlining_idx++; | |
446 _print_inlining_list->insert_before(_print_inlining_idx, PrintInliningBuffer()); | |
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447 } |
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448 } |
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449 |
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450 void print_inlining_insert(CallGenerator* cg) { |
12295 | 451 if (_print_inlining) { |
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452 for (int i = 0; i < _print_inlining_list->length(); i++) { |
12295 | 453 if (_print_inlining_list->adr_at(i)->cg() == cg) { |
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454 _print_inlining_list->insert_before(i+1, PrintInliningBuffer()); |
12295 | 455 _print_inlining_idx = i+1; |
456 _print_inlining_list->adr_at(i)->set_cg(NULL); | |
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457 return; |
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458 } |
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459 } |
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460 ShouldNotReachHere(); |
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461 } |
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462 } |
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463 |
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464 void print_inlining(ciMethod* method, int inline_level, int bci, const char* msg = NULL) { |
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465 stringStream ss; |
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466 CompileTask::print_inlining(&ss, method, inline_level, bci, msg); |
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467 print_inlining_stream()->print(ss.as_string()); |
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468 } |
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469 |
17622 | 470 void* replay_inline_data() const { return _replay_inline_data; } |
471 | |
472 // Dump inlining replay data to the stream. | |
473 void dump_inline_data(outputStream* out); | |
474 | |
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475 private: |
0 | 476 // Matching, CFG layout, allocation, code generation |
477 PhaseCFG* _cfg; // Results of CFG finding | |
478 bool _select_24_bit_instr; // We selected an instruction with a 24-bit result | |
479 bool _in_24_bit_fp_mode; // We are emitting instructions with 24-bit results | |
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480 int _java_calls; // Number of java calls in the method |
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481 int _inner_loops; // Number of inner loops in the method |
0 | 482 Matcher* _matcher; // Engine to map ideal to machine instructions |
483 PhaseRegAlloc* _regalloc; // Results of register allocation. | |
484 int _frame_slots; // Size of total frame in stack slots | |
485 CodeOffsets _code_offsets; // Offsets into the code for various interesting entries | |
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 | |
490 uint _node_bundling_limit; | |
491 Bundle* _node_bundling_base; // Information for instruction bundling | |
492 | |
493 // Instruction bits passed off to the VM | |
494 int _method_size; // Size of nmethod code segment in bytes | |
495 CodeBuffer _code_buffer; // Where the code is assembled | |
496 int _first_block_size; // Size of unvalidated entry point code / OSR poison code | |
497 ExceptionHandlerTable _handler_table; // Table of native-code exception handlers | |
498 ImplicitExceptionTable _inc_table; // Table of implicit null checks in native code | |
499 OopMapSet* _oop_map_set; // Table of oop maps (one for each safepoint location) | |
500 static int _CompiledZap_count; // counter compared against CompileZap[First/Last] | |
501 BufferBlob* _scratch_buffer_blob; // For temporary code buffers. | |
502 relocInfo* _scratch_locs_memory; // For temporary code buffers. | |
2008 | 503 int _scratch_const_size; // For temporary code buffers. |
504 bool _in_scratch_emit_size; // true when in scratch_emit_size. | |
0 | 505 |
506 public: | |
507 // Accessors | |
508 | |
509 // The Compile instance currently active in this (compiler) thread. | |
510 static Compile* current() { | |
511 return (Compile*) ciEnv::current()->compiler_data(); | |
512 } | |
513 | |
514 // ID for this compilation. Useful for setting breakpoints in the debugger. | |
515 int compile_id() const { return _compile_id; } | |
516 | |
517 // Does this compilation allow instructions to subsume loads? User | |
518 // instructions that subsume a load may result in an unschedulable | |
519 // instruction sequence. | |
520 bool subsume_loads() const { return _subsume_loads; } | |
10278 | 521 /** Do escape analysis. */ |
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522 bool do_escape_analysis() const { return _do_escape_analysis; } |
10278 | 523 /** Do boxing elimination. */ |
524 bool eliminate_boxing() const { return _eliminate_boxing; } | |
525 /** Do aggressive boxing elimination. */ | |
526 bool aggressive_unboxing() const { return _eliminate_boxing && AggressiveUnboxing; } | |
0 | 527 bool save_argument_registers() const { return _save_argument_registers; } |
528 | |
529 | |
530 // Other fixed compilation parameters. | |
531 ciMethod* method() const { return _method; } | |
532 int entry_bci() const { return _entry_bci; } | |
533 bool is_osr_compilation() const { return _entry_bci != InvocationEntryBci; } | |
534 bool is_method_compilation() const { return (_method != NULL && !_method->flags().is_native()); } | |
535 const TypeFunc* tf() const { assert(_tf!=NULL, ""); return _tf; } | |
536 void init_tf(const TypeFunc* tf) { assert(_tf==NULL, ""); _tf = tf; } | |
537 InlineTree* ilt() const { return _ilt; } | |
538 address stub_function() const { return _stub_function; } | |
539 const char* stub_name() const { return _stub_name; } | |
540 address stub_entry_point() const { return _stub_entry_point; } | |
541 | |
542 // Control of this compilation. | |
543 int fixed_slots() const { assert(_fixed_slots >= 0, ""); return _fixed_slots; } | |
544 void set_fixed_slots(int n) { _fixed_slots = n; } | |
545 int major_progress() const { return _major_progress; } | |
7473 | 546 void set_inlining_progress(bool z) { _inlining_progress = z; } |
547 int inlining_progress() const { return _inlining_progress; } | |
548 void set_inlining_incrementally(bool z) { _inlining_incrementally = z; } | |
549 int inlining_incrementally() const { return _inlining_incrementally; } | |
0 | 550 void set_major_progress() { _major_progress++; } |
551 void clear_major_progress() { _major_progress = 0; } | |
552 int num_loop_opts() const { return _num_loop_opts; } | |
553 void set_num_loop_opts(int n) { _num_loop_opts = n; } | |
554 int max_inline_size() const { return _max_inline_size; } | |
555 void set_freq_inline_size(int n) { _freq_inline_size = n; } | |
556 int freq_inline_size() const { return _freq_inline_size; } | |
557 void set_max_inline_size(int n) { _max_inline_size = n; } | |
558 bool has_loops() const { return _has_loops; } | |
559 void set_has_loops(bool z) { _has_loops = z; } | |
560 bool has_split_ifs() const { return _has_split_ifs; } | |
561 void set_has_split_ifs(bool z) { _has_split_ifs = z; } | |
562 bool has_unsafe_access() const { return _has_unsafe_access; } | |
563 void set_has_unsafe_access(bool z) { _has_unsafe_access = z; } | |
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564 bool has_stringbuilder() const { return _has_stringbuilder; } |
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565 void set_has_stringbuilder(bool z) { _has_stringbuilder = z; } |
10278 | 566 bool has_boxed_value() const { return _has_boxed_value; } |
567 void set_has_boxed_value(bool z) { _has_boxed_value = z; } | |
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568 int max_vector_size() const { return _max_vector_size; } |
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569 void set_max_vector_size(int s) { _max_vector_size = s; } |
0 | 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; } | |
418 | 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; } | |
0 | 583 bool do_count_invocations() const{ return _do_count_invocations; } |
584 void set_do_count_invocations(bool z){ _do_count_invocations = z; } | |
585 bool do_method_data_update() const { return _do_method_data_update; } | |
586 void set_do_method_data_update(bool z) { _do_method_data_update = z; } | |
587 int AliasLevel() const { return _AliasLevel; } | |
588 bool print_assembly() const { return _print_assembly; } | |
589 void set_print_assembly(bool z) { _print_assembly = z; } | |
12295 | 590 bool print_inlining() const { return _print_inlining; } |
591 void set_print_inlining(bool z) { _print_inlining = z; } | |
592 bool print_intrinsics() const { return _print_intrinsics; } | |
593 void set_print_intrinsics(bool z) { _print_intrinsics = z; } | |
0 | 594 // check the CompilerOracle for special behaviours for this compile |
595 bool method_has_option(const char * option) { | |
596 return method() != NULL && method()->has_option(option); | |
597 } | |
598 #ifndef PRODUCT | |
599 bool trace_opto_output() const { return _trace_opto_output; } | |
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600 bool parsed_irreducible_loop() const { return _parsed_irreducible_loop; } |
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601 void set_parsed_irreducible_loop(bool z) { _parsed_irreducible_loop = z; } |
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602 int _in_dump_cnt; // Required for dumping ir nodes. |
0 | 603 #endif |
604 | |
1265 | 605 // JSR 292 |
606 bool has_method_handle_invokes() const { return _has_method_handle_invokes; } | |
607 void set_has_method_handle_invokes(bool z) { _has_method_handle_invokes = z; } | |
608 | |
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609 Ticks _latest_stage_start_counter; |
10405 | 610 |
0 | 611 void begin_method() { |
612 #ifndef PRODUCT | |
613 if (_printer) _printer->begin_method(this); | |
614 #endif | |
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615 C->_latest_stage_start_counter.stamp(); |
0 | 616 } |
10405 | 617 |
618 void print_method(CompilerPhaseType cpt, int level = 1) { | |
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619 EventCompilerPhase event; |
10405 | 620 if (event.should_commit()) { |
621 event.set_starttime(C->_latest_stage_start_counter); | |
622 event.set_phase((u1) cpt); | |
623 event.set_compileID(C->_compile_id); | |
624 event.set_phaseLevel(level); | |
625 event.commit(); | |
626 } | |
627 | |
628 | |
0 | 629 #ifndef PRODUCT |
10405 | 630 if (_printer) _printer->print_method(this, CompilerPhaseTypeHelper::to_string(cpt), level); |
0 | 631 #endif |
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632 C->_latest_stage_start_counter.stamp(); |
0 | 633 } |
10405 | 634 |
635 void end_method(int level = 1) { | |
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636 EventCompilerPhase event; |
10405 | 637 if (event.should_commit()) { |
638 event.set_starttime(C->_latest_stage_start_counter); | |
639 event.set_phase((u1) PHASE_END); | |
640 event.set_compileID(C->_compile_id); | |
641 event.set_phaseLevel(level); | |
642 event.commit(); | |
643 } | |
0 | 644 #ifndef PRODUCT |
645 if (_printer) _printer->end_method(); | |
646 #endif | |
647 } | |
648 | |
10278 | 649 int macro_count() const { return _macro_nodes->length(); } |
650 int predicate_count() const { return _predicate_opaqs->length();} | |
651 int expensive_count() const { return _expensive_nodes->length(); } | |
652 Node* macro_node(int idx) const { return _macro_nodes->at(idx); } | |
653 Node* predicate_opaque1_node(int idx) const { return _predicate_opaqs->at(idx);} | |
654 Node* expensive_node(int idx) const { return _expensive_nodes->at(idx); } | |
0 | 655 ConnectionGraph* congraph() { return _congraph;} |
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656 void set_congraph(ConnectionGraph* congraph) { _congraph = congraph;} |
0 | 657 void add_macro_node(Node * n) { |
658 //assert(n->is_macro(), "must be a macro node"); | |
659 assert(!_macro_nodes->contains(n), " duplicate entry in expand list"); | |
660 _macro_nodes->append(n); | |
661 } | |
662 void remove_macro_node(Node * n) { | |
663 // this function may be called twice for a node so check | |
664 // that the node is in the array before attempting to remove it | |
665 if (_macro_nodes->contains(n)) | |
666 _macro_nodes->remove(n); | |
1172 | 667 // remove from _predicate_opaqs list also if it is there |
668 if (predicate_count() > 0 && _predicate_opaqs->contains(n)){ | |
669 _predicate_opaqs->remove(n); | |
670 } | |
0 | 671 } |
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672 void add_expensive_node(Node * n); |
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673 void remove_expensive_node(Node * n) { |
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674 if (_expensive_nodes->contains(n)) { |
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675 _expensive_nodes->remove(n); |
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676 } |
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677 } |
1172 | 678 void add_predicate_opaq(Node * n) { |
679 assert(!_predicate_opaqs->contains(n), " duplicate entry in predicate opaque1"); | |
680 assert(_macro_nodes->contains(n), "should have already been in macro list"); | |
681 _predicate_opaqs->append(n); | |
682 } | |
683 // remove the opaque nodes that protect the predicates so that the unused checks and | |
684 // uncommon traps will be eliminated from the graph. | |
685 void cleanup_loop_predicates(PhaseIterGVN &igvn); | |
2445 | 686 bool is_predicate_opaq(Node * n) { |
687 return _predicate_opaqs->contains(n); | |
688 } | |
0 | 689 |
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690 // Are there candidate expensive nodes for optimization? |
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691 bool should_optimize_expensive_nodes(PhaseIterGVN &igvn); |
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692 // Check whether n1 and n2 are similar |
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693 static int cmp_expensive_nodes(Node* n1, Node* n2); |
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694 // Sort expensive nodes to locate similar expensive nodes |
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695 void sort_expensive_nodes(); |
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696 |
0 | 697 // Compilation environment. |
698 Arena* comp_arena() { return &_comp_arena; } | |
699 ciEnv* env() const { return _env; } | |
700 CompileLog* log() const { return _log; } | |
701 bool failing() const { return _env->failing() || _failure_reason != NULL; } | |
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702 const char* failure_reason() { return _failure_reason; } |
0 | 703 bool failure_reason_is(const char* r) { return (r==_failure_reason) || (r!=NULL && _failure_reason!=NULL && strcmp(r, _failure_reason)==0); } |
704 | |
705 void record_failure(const char* reason); | |
706 void record_method_not_compilable(const char* reason, bool all_tiers = false) { | |
707 // All bailouts cover "all_tiers" when TieredCompilation is off. | |
708 if (!TieredCompilation) all_tiers = true; | |
709 env()->record_method_not_compilable(reason, all_tiers); | |
710 // Record failure reason. | |
711 record_failure(reason); | |
712 } | |
713 void record_method_not_compilable_all_tiers(const char* reason) { | |
714 record_method_not_compilable(reason, true); | |
715 } | |
716 bool check_node_count(uint margin, const char* reason) { | |
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717 if (live_nodes() + margin > (uint)MaxNodeLimit) { |
0 | 718 record_method_not_compilable(reason); |
719 return true; | |
720 } else { | |
721 return false; | |
722 } | |
723 } | |
724 | |
725 // Node management | |
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726 uint unique() const { return _unique; } |
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727 uint next_unique() { return _unique++; } |
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728 void set_unique(uint i) { _unique = i; } |
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729 static int debug_idx() { return debug_only(_debug_idx)+0; } |
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730 static void set_debug_idx(int i) { debug_only(_debug_idx = i); } |
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731 Arena* node_arena() { return &_node_arena; } |
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732 Arena* old_arena() { return &_old_arena; } |
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733 RootNode* root() const { return _root; } |
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734 void set_root(RootNode* r) { _root = r; } |
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735 StartNode* start() const; // (Derived from root.) |
0 | 736 void init_start(StartNode* s); |
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737 Node* immutable_memory(); |
0 | 738 |
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739 Node* recent_alloc_ctl() const { return _recent_alloc_ctl; } |
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740 Node* recent_alloc_obj() const { return _recent_alloc_obj; } |
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741 void set_recent_alloc(Node* ctl, Node* obj) { |
0 | 742 _recent_alloc_ctl = ctl; |
743 _recent_alloc_obj = obj; | |
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744 } |
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745 void record_dead_node(uint idx) { if (_dead_node_list.test_set(idx)) return; |
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746 _dead_node_count++; |
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747 } |
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748 bool is_dead_node(uint idx) { return _dead_node_list.test(idx) != 0; } |
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749 uint dead_node_count() { return _dead_node_count; } |
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750 void reset_dead_node_list() { _dead_node_list.Reset(); |
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751 _dead_node_count = 0; |
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752 } |
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753 uint live_nodes() const { |
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754 int val = _unique - _dead_node_count; |
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755 assert (val >= 0, err_msg_res("number of tracked dead nodes %d more than created nodes %d", _unique, _dead_node_count)); |
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756 return (uint) val; |
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757 } |
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758 #ifdef ASSERT |
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759 uint count_live_nodes_by_graph_walk(); |
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760 void print_missing_nodes(); |
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761 #endif |
0 | 762 |
2008 | 763 // Constant table |
764 ConstantTable& constant_table() { return _constant_table; } | |
765 | |
766 MachConstantBaseNode* mach_constant_base_node(); | |
767 bool has_mach_constant_base_node() const { return _mach_constant_base_node != NULL; } | |
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768 // Generated by adlc, true if CallNode requires MachConstantBase. |
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769 bool needs_clone_jvms(); |
2008 | 770 |
0 | 771 // Handy undefined Node |
772 Node* top() const { return _top; } | |
773 | |
774 // these are used by guys who need to know about creation and transformation of top: | |
775 Node* cached_top_node() { return _top; } | |
776 void set_cached_top_node(Node* tn); | |
777 | |
778 GrowableArray<Node_Notes*>* node_note_array() const { return _node_note_array; } | |
779 void set_node_note_array(GrowableArray<Node_Notes*>* arr) { _node_note_array = arr; } | |
780 Node_Notes* default_node_notes() const { return _default_node_notes; } | |
781 void set_default_node_notes(Node_Notes* n) { _default_node_notes = n; } | |
782 | |
783 Node_Notes* node_notes_at(int idx) { | |
784 return locate_node_notes(_node_note_array, idx, false); | |
785 } | |
786 inline bool set_node_notes_at(int idx, Node_Notes* value); | |
787 | |
788 // Copy notes from source to dest, if they exist. | |
789 // Overwrite dest only if source provides something. | |
790 // Return true if information was moved. | |
791 bool copy_node_notes_to(Node* dest, Node* source); | |
792 | |
793 // Workhorse function to sort out the blocked Node_Notes array: | |
794 inline Node_Notes* locate_node_notes(GrowableArray<Node_Notes*>* arr, | |
795 int idx, bool can_grow = false); | |
796 | |
797 void grow_node_notes(GrowableArray<Node_Notes*>* arr, int grow_by); | |
798 | |
799 // Type management | |
800 Arena* type_arena() { return _type_arena; } | |
801 Dict* type_dict() { return _type_dict; } | |
802 void* type_hwm() { return _type_hwm; } | |
803 size_t type_last_size() { return _type_last_size; } | |
804 int num_alias_types() { return _num_alias_types; } | |
805 | |
806 void init_type_arena() { _type_arena = &_Compile_types; } | |
807 void set_type_arena(Arena* a) { _type_arena = a; } | |
808 void set_type_dict(Dict* d) { _type_dict = d; } | |
809 void set_type_hwm(void* p) { _type_hwm = p; } | |
810 void set_type_last_size(size_t sz) { _type_last_size = sz; } | |
811 | |
812 const TypeFunc* last_tf(ciMethod* m) { | |
813 return (m == _last_tf_m) ? _last_tf : NULL; | |
814 } | |
815 void set_last_tf(ciMethod* m, const TypeFunc* tf) { | |
816 assert(m != NULL || tf == NULL, ""); | |
817 _last_tf_m = m; | |
818 _last_tf = tf; | |
819 } | |
820 | |
821 AliasType* alias_type(int idx) { assert(idx < num_alias_types(), "oob"); return _alias_types[idx]; } | |
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822 AliasType* alias_type(const TypePtr* adr_type, ciField* field = NULL) { return find_alias_type(adr_type, false, field); } |
0 | 823 bool have_alias_type(const TypePtr* adr_type); |
824 AliasType* alias_type(ciField* field); | |
825 | |
826 int get_alias_index(const TypePtr* at) { return alias_type(at)->index(); } | |
827 const TypePtr* get_adr_type(uint aidx) { return alias_type(aidx)->adr_type(); } | |
828 int get_general_index(uint aidx) { return alias_type(aidx)->general_index(); } | |
829 | |
830 // Building nodes | |
831 void rethrow_exceptions(JVMState* jvms); | |
832 void return_values(JVMState* jvms); | |
833 JVMState* build_start_state(StartNode* start, const TypeFunc* tf); | |
834 | |
835 // Decide how to build a call. | |
836 // The profile factor is a discount to apply to this site's interp. profile. | |
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837 CallGenerator* call_generator(ciMethod* call_method, int vtable_index, bool call_does_dispatch, |
12966 | 838 JVMState* jvms, bool allow_inline, float profile_factor, ciKlass* speculative_receiver_type = NULL, |
839 bool allow_intrinsics = true, bool delayed_forbidden = false); | |
10278 | 840 bool should_delay_inlining(ciMethod* call_method, JVMState* jvms) { |
841 return should_delay_string_inlining(call_method, jvms) || | |
842 should_delay_boxing_inlining(call_method, jvms); | |
843 } | |
844 bool should_delay_string_inlining(ciMethod* call_method, JVMState* jvms); | |
845 bool should_delay_boxing_inlining(ciMethod* call_method, JVMState* jvms); | |
0 | 846 |
7478 | 847 // Helper functions to identify inlining potential at call-site |
848 ciMethod* optimize_virtual_call(ciMethod* caller, int bci, ciInstanceKlass* klass, | |
849 ciMethod* callee, const TypeOopPtr* receiver_type, | |
850 bool is_virtual, | |
851 bool &call_does_dispatch, int &vtable_index); | |
852 ciMethod* optimize_inlining(ciMethod* caller, int bci, ciInstanceKlass* klass, | |
853 ciMethod* callee, const TypeOopPtr* receiver_type); | |
854 | |
0 | 855 // Report if there were too many traps at a current method and bci. |
856 // Report if a trap was recorded, and/or PerMethodTrapLimit was exceeded. | |
857 // If there is no MDO at all, report no trap unless told to assume it. | |
858 bool too_many_traps(ciMethod* method, int bci, Deoptimization::DeoptReason reason); | |
859 // This version, unspecific to a particular bci, asks if | |
860 // PerMethodTrapLimit was exceeded for all inlined methods seen so far. | |
861 bool too_many_traps(Deoptimization::DeoptReason reason, | |
862 // Privately used parameter for logging: | |
863 ciMethodData* logmd = NULL); | |
864 // Report if there were too many recompiles at a method and bci. | |
865 bool too_many_recompiles(ciMethod* method, int bci, Deoptimization::DeoptReason reason); | |
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866 // Return a bitset with the reasons where deoptimization is allowed, |
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867 // i.e., where there were not too many uncommon traps. |
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868 int _allowed_reasons; |
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869 int allowed_deopt_reasons() { return _allowed_reasons; } |
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870 void set_allowed_deopt_reasons(); |
0 | 871 |
872 // Parsing, optimization | |
873 PhaseGVN* initial_gvn() { return _initial_gvn; } | |
874 Unique_Node_List* for_igvn() { return _for_igvn; } | |
875 inline void record_for_igvn(Node* n); // Body is after class Unique_Node_List. | |
876 void set_initial_gvn(PhaseGVN *gvn) { _initial_gvn = gvn; } | |
877 void set_for_igvn(Unique_Node_List *for_igvn) { _for_igvn = for_igvn; } | |
878 | |
1080
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879 // Replace n by nn using initial_gvn, calling hash_delete and |
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880 // record_for_igvn as needed. |
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881 void gvn_replace_by(Node* n, Node* nn); |
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882 |
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883 |
0 | 884 void identify_useful_nodes(Unique_Node_List &useful); |
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885 void update_dead_node_list(Unique_Node_List &useful); |
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886 void remove_useless_nodes (Unique_Node_List &useful); |
0 | 887 |
888 WarmCallInfo* warm_calls() const { return _warm_calls; } | |
889 void set_warm_calls(WarmCallInfo* l) { _warm_calls = l; } | |
890 WarmCallInfo* pop_warm_call(); | |
891 | |
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892 // Record this CallGenerator for inlining at the end of parsing. |
7473 | 893 void add_late_inline(CallGenerator* cg) { |
894 _late_inlines.insert_before(_late_inlines_pos, cg); | |
895 _late_inlines_pos++; | |
896 } | |
897 | |
898 void prepend_late_inline(CallGenerator* cg) { | |
899 _late_inlines.insert_before(0, cg); | |
900 } | |
901 | |
902 void add_string_late_inline(CallGenerator* cg) { | |
903 _string_late_inlines.push(cg); | |
904 } | |
905 | |
10278 | 906 void add_boxing_late_inline(CallGenerator* cg) { |
907 _boxing_late_inlines.push(cg); | |
908 } | |
909 | |
7473 | 910 void remove_useless_late_inlines(GrowableArray<CallGenerator*>* inlines, Unique_Node_List &useful); |
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911 |
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912 void dump_inlining(); |
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913 |
7473 | 914 bool over_inlining_cutoff() const { |
915 if (!inlining_incrementally()) { | |
916 return unique() > (uint)NodeCountInliningCutoff; | |
917 } else { | |
918 return live_nodes() > (uint)LiveNodeCountInliningCutoff; | |
919 } | |
920 } | |
921 | |
922 void inc_number_of_mh_late_inlines() { _number_of_mh_late_inlines++; } | |
923 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--; } | |
924 bool has_mh_late_inlines() const { return _number_of_mh_late_inlines > 0; } | |
925 | |
926 void inline_incrementally_one(PhaseIterGVN& igvn); | |
927 void inline_incrementally(PhaseIterGVN& igvn); | |
928 void inline_string_calls(bool parse_time); | |
10278 | 929 void inline_boxing_calls(PhaseIterGVN& igvn); |
7473 | 930 |
0 | 931 // Matching, CFG layout, allocation, code generation |
932 PhaseCFG* cfg() { return _cfg; } | |
933 bool select_24_bit_instr() const { return _select_24_bit_instr; } | |
934 bool in_24_bit_fp_mode() const { return _in_24_bit_fp_mode; } | |
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935 bool has_java_calls() const { return _java_calls > 0; } |
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936 int java_calls() const { return _java_calls; } |
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937 int inner_loops() const { return _inner_loops; } |
0 | 938 Matcher* matcher() { return _matcher; } |
939 PhaseRegAlloc* regalloc() { return _regalloc; } | |
940 int frame_slots() const { return _frame_slots; } | |
941 int frame_size_in_words() const; // frame_slots in units of the polymorphic 'words' | |
942 RegMask& FIRST_STACK_mask() { return _FIRST_STACK_mask; } | |
943 Arena* indexSet_arena() { return _indexSet_arena; } | |
944 void* indexSet_free_block_list() { return _indexSet_free_block_list; } | |
945 uint node_bundling_limit() { return _node_bundling_limit; } | |
946 Bundle* node_bundling_base() { return _node_bundling_base; } | |
947 void set_node_bundling_limit(uint n) { _node_bundling_limit = n; } | |
948 void set_node_bundling_base(Bundle* b) { _node_bundling_base = b; } | |
949 bool starts_bundle(const Node *n) const; | |
950 bool need_stack_bang(int frame_size_in_bytes) const; | |
951 bool need_register_stack_bang() const; | |
952 | |
953 void set_matcher(Matcher* m) { _matcher = m; } | |
954 //void set_regalloc(PhaseRegAlloc* ra) { _regalloc = ra; } | |
955 void set_indexSet_arena(Arena* a) { _indexSet_arena = a; } | |
956 void set_indexSet_free_block_list(void* p) { _indexSet_free_block_list = p; } | |
957 | |
958 // Remember if this compilation changes hardware mode to 24-bit precision | |
959 void set_24_bit_selection_and_mode(bool selection, bool mode) { | |
960 _select_24_bit_instr = selection; | |
961 _in_24_bit_fp_mode = mode; | |
962 } | |
963 | |
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964 void set_java_calls(int z) { _java_calls = z; } |
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965 void set_inner_loops(int z) { _inner_loops = z; } |
0 | 966 |
967 // Instruction bits passed off to the VM | |
968 int code_size() { return _method_size; } | |
969 CodeBuffer* code_buffer() { return &_code_buffer; } | |
970 int first_block_size() { return _first_block_size; } | |
971 void set_frame_complete(int off) { _code_offsets.set_value(CodeOffsets::Frame_Complete, off); } | |
972 ExceptionHandlerTable* handler_table() { return &_handler_table; } | |
973 ImplicitExceptionTable* inc_table() { return &_inc_table; } | |
974 OopMapSet* oop_map_set() { return _oop_map_set; } | |
975 DebugInformationRecorder* debug_info() { return env()->debug_info(); } | |
976 Dependencies* dependencies() { return env()->dependencies(); } | |
977 static int CompiledZap_count() { return _CompiledZap_count; } | |
978 BufferBlob* scratch_buffer_blob() { return _scratch_buffer_blob; } | |
2008 | 979 void init_scratch_buffer_blob(int const_size); |
980 void clear_scratch_buffer_blob(); | |
0 | 981 void set_scratch_buffer_blob(BufferBlob* b) { _scratch_buffer_blob = b; } |
982 relocInfo* scratch_locs_memory() { return _scratch_locs_memory; } | |
983 void set_scratch_locs_memory(relocInfo* b) { _scratch_locs_memory = b; } | |
984 | |
985 // emit to scratch blob, report resulting size | |
986 uint scratch_emit_size(const Node* n); | |
2008 | 987 void set_in_scratch_emit_size(bool x) { _in_scratch_emit_size = x; } |
988 bool in_scratch_emit_size() const { return _in_scratch_emit_size; } | |
0 | 989 |
990 enum ScratchBufferBlob { | |
991 MAX_inst_size = 1024, | |
992 MAX_locs_size = 128, // number of relocInfo elements | |
993 MAX_const_size = 128, | |
994 MAX_stubs_size = 128 | |
995 }; | |
996 | |
997 // Major entry point. Given a Scope, compile the associated method. | |
998 // For normal compilations, entry_bci is InvocationEntryBci. For on stack | |
999 // replacement, entry_bci indicates the bytecode for which to compile a | |
1000 // continuation. | |
1001 Compile(ciEnv* ci_env, C2Compiler* compiler, ciMethod* target, | |
10278 | 1002 int entry_bci, bool subsume_loads, bool do_escape_analysis, |
1003 bool eliminate_boxing); | |
0 | 1004 |
1005 // Second major entry point. From the TypeFunc signature, generate code | |
1006 // to pass arguments from the Java calling convention to the C calling | |
1007 // convention. | |
1008 Compile(ciEnv* ci_env, const TypeFunc *(*gen)(), | |
1009 address stub_function, const char *stub_name, | |
1010 int is_fancy_jump, bool pass_tls, | |
1011 bool save_arg_registers, bool return_pc); | |
1012 | |
1013 // From the TypeFunc signature, generate code to pass arguments | |
1014 // from Compiled calling convention to Interpreter's calling convention | |
1015 void Generate_Compiled_To_Interpreter_Graph(const TypeFunc *tf, address interpreter_entry); | |
1016 | |
1017 // From the TypeFunc signature, generate code to pass arguments | |
1018 // from Interpreter's calling convention to Compiler's calling convention | |
1019 void Generate_Interpreter_To_Compiled_Graph(const TypeFunc *tf); | |
1020 | |
1021 // Are we compiling a method? | |
1022 bool has_method() { return method() != NULL; } | |
1023 | |
1024 // Maybe print some information about this compile. | |
1025 void print_compile_messages(); | |
1026 | |
1027 // Final graph reshaping, a post-pass after the regular optimizer is done. | |
1028 bool final_graph_reshaping(); | |
1029 | |
1030 // returns true if adr is completely contained in the given alias category | |
1031 bool must_alias(const TypePtr* adr, int alias_idx); | |
1032 | |
1033 // returns true if adr overlaps with the given alias category | |
1034 bool can_alias(const TypePtr* adr, int alias_idx); | |
1035 | |
1036 // Driver for converting compiler's IR into machine code bits | |
1037 void Output(); | |
1038 | |
1039 // Accessors for node bundling info. | |
1040 Bundle* node_bundling(const Node *n); | |
1041 bool valid_bundle_info(const Node *n); | |
1042 | |
1043 // Schedule and Bundle the instructions | |
1044 void ScheduleAndBundle(); | |
1045 | |
1046 // Build OopMaps for each GC point | |
1047 void BuildOopMaps(); | |
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1049 // Append debug info for the node "local" at safepoint node "sfpt" to the |
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1050 // "array", May also consult and add to "objs", which describes the |
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1051 // scalar-replaced objects. |
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1052 void FillLocArray( int idx, MachSafePointNode* sfpt, |
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1053 Node *local, GrowableArray<ScopeValue*> *array, |
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1054 GrowableArray<ScopeValue*> *objs ); |
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1055 |
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1056 // If "objs" contains an ObjectValue whose id is "id", returns it, else NULL. |
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1057 static ObjectValue* sv_for_node_id(GrowableArray<ScopeValue*> *objs, int id); |
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1058 // Requres that "objs" does not contains an ObjectValue whose id matches |
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1059 // that of "sv. Appends "sv". |
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1060 static void set_sv_for_object_node(GrowableArray<ScopeValue*> *objs, |
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1061 ObjectValue* sv ); |
0 | 1062 |
1063 // Process an OopMap Element while emitting nodes | |
1064 void Process_OopMap_Node(MachNode *mach, int code_offset); | |
1065 | |
3851 | 1066 // Initialize code buffer |
1067 CodeBuffer* init_buffer(uint* blk_starts); | |
1068 | |
0 | 1069 // Write out basic block data to code buffer |
3851 | 1070 void fill_buffer(CodeBuffer* cb, uint* blk_starts); |
0 | 1071 |
1072 // Determine which variable sized branches can be shortened | |
3851 | 1073 void shorten_branches(uint* blk_starts, int& code_size, int& reloc_size, int& stub_size); |
1074 | |
0 | 1075 // Compute the size of first NumberOfLoopInstrToAlign instructions |
1076 // at the head of a loop. | |
1077 void compute_loop_first_inst_sizes(); | |
1078 | |
1079 // Compute the information for the exception tables | |
1080 void FillExceptionTables(uint cnt, uint *call_returns, uint *inct_starts, Label *blk_labels); | |
1081 | |
1082 // Stack slots that may be unused by the calling convention but must | |
1083 // otherwise be preserved. On Intel this includes the return address. | |
1084 // On PowerPC it includes the 4 words holding the old TOC & LR glue. | |
1085 uint in_preserve_stack_slots(); | |
1086 | |
1087 // "Top of Stack" slots that may be unused by the calling convention but must | |
1088 // otherwise be preserved. | |
1089 // On Intel these are not necessary and the value can be zero. | |
1090 // On Sparc this describes the words reserved for storing a register window | |
1091 // when an interrupt occurs. | |
1092 static uint out_preserve_stack_slots(); | |
1093 | |
1094 // Number of outgoing stack slots killed above the out_preserve_stack_slots | |
1095 // for calls to C. Supports the var-args backing area for register parms. | |
1096 uint varargs_C_out_slots_killed() const; | |
1097 | |
1098 // Number of Stack Slots consumed by a synchronization entry | |
1099 int sync_stack_slots() const; | |
1100 | |
1101 // Compute the name of old_SP. See <arch>.ad for frame layout. | |
1102 OptoReg::Name compute_old_SP(); | |
1103 | |
1104 #ifdef ENABLE_ZAP_DEAD_LOCALS | |
1105 static bool is_node_getting_a_safepoint(Node*); | |
1106 void Insert_zap_nodes(); | |
1107 Node* call_zap_node(MachSafePointNode* n, int block_no); | |
1108 #endif | |
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; | |
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1122 AliasType* find_alias_type(const TypePtr* adr_type, bool no_create, ciField* field); |
0 | 1123 |
1124 void verify_top(Node*) const PRODUCT_RETURN; | |
1125 | |
1126 // Intrinsic setup. | |
1127 void register_library_intrinsics(); // initializer | |
1128 CallGenerator* make_vm_intrinsic(ciMethod* m, bool is_virtual); // constructor | |
1129 int intrinsic_insertion_index(ciMethod* m, bool is_virtual); // helper | |
1130 CallGenerator* find_intrinsic(ciMethod* m, bool is_virtual); // query fn | |
1131 void register_intrinsic(CallGenerator* cg); // update fn | |
1132 | |
1133 #ifndef PRODUCT | |
1134 static juint _intrinsic_hist_count[vmIntrinsics::ID_LIMIT]; | |
1135 static jubyte _intrinsic_hist_flags[vmIntrinsics::ID_LIMIT]; | |
1136 #endif | |
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1137 // Function calls made by the public function final_graph_reshaping. |
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1138 // No need to be made public as they are not called elsewhere. |
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1139 void final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc); |
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1140 void final_graph_reshaping_walk( Node_Stack &nstack, Node *root, Final_Reshape_Counts &frc ); |
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1141 void eliminate_redundant_card_marks(Node* n); |
0 | 1142 |
1143 public: | |
1144 | |
1145 // Note: Histogram array size is about 1 Kb. | |
1146 enum { // flag bits: | |
1147 _intrinsic_worked = 1, // succeeded at least once | |
1148 _intrinsic_failed = 2, // tried it but it failed | |
1149 _intrinsic_disabled = 4, // was requested but disabled (e.g., -XX:-InlineUnsafeOps) | |
1150 _intrinsic_virtual = 8, // was seen in the virtual form (rare) | |
1151 _intrinsic_both = 16 // was seen in the non-virtual form (usual) | |
1152 }; | |
1153 // Update histogram. Return boolean if this is a first-time occurrence. | |
1154 static bool gather_intrinsic_statistics(vmIntrinsics::ID id, | |
1155 bool is_virtual, int flags) PRODUCT_RETURN0; | |
1156 static void print_intrinsic_statistics() PRODUCT_RETURN; | |
1157 | |
1158 // Graph verification code | |
1159 // Walk the node list, verifying that there is a one-to-one | |
1160 // correspondence between Use-Def edges and Def-Use edges | |
1161 // The option no_dead_code enables stronger checks that the | |
1162 // graph is strongly connected from root in both directions. | |
1163 void verify_graph_edges(bool no_dead_code = false) PRODUCT_RETURN; | |
1164 | |
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1165 // Verify GC barrier patterns |
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1166 void verify_barriers() PRODUCT_RETURN; |
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1167 |
0 | 1168 // End-of-run dumps. |
1169 static void print_statistics() PRODUCT_RETURN; | |
1170 | |
1171 // Dump formatted assembly | |
1172 void dump_asm(int *pcs = NULL, uint pc_limit = 0) PRODUCT_RETURN; | |
1173 void dump_pc(int *pcs, int pc_limit, Node *n); | |
1174 | |
1175 // Verify ADLC assumptions during startup | |
1176 static void adlc_verification() PRODUCT_RETURN; | |
1177 | |
1178 // Definitions of pd methods | |
1179 static void pd_compiler2_init(); | |
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1180 |
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1181 // Auxiliary method for randomized fuzzing/stressing |
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1182 static bool randomized_select(int count); |
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1183 |
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1184 // enter a PreserveJVMState block |
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1185 void inc_preserve_jvm_state() { |
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1186 _preserve_jvm_state++; |
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1187 } |
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1188 |
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1189 // exit a PreserveJVMState block |
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1190 void dec_preserve_jvm_state() { |
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1191 _preserve_jvm_state--; |
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1192 assert(_preserve_jvm_state >= 0, "_preserve_jvm_state shouldn't be negative"); |
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1193 } |
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1194 |
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1195 bool has_preserve_jvm_state() const { |
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1196 return _preserve_jvm_state > 0; |
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1197 } |
0 | 1198 }; |
1972 | 1199 |
1200 #endif // SHARE_VM_OPTO_COMPILE_HPP |