Mercurial > hg > truffle
annotate src/share/vm/opto/compile.hpp @ 10278:6f3fd5150b67
6934604: enable parts of EliminateAutoBox by default
Summary: Resurrected autobox elimination code and enabled part of it by default.
Reviewed-by: roland, twisti
| author | kvn |
|---|---|
| date | Wed, 08 May 2013 15:08:01 -0700 |
| parents | ff55877839bc |
| children | f2110083203d |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2012, 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" | |
| 39 #include "opto/phase.hpp" | |
| 40 #include "opto/regmask.hpp" | |
| 41 #include "runtime/deoptimization.hpp" | |
| 42 #include "runtime/vmThread.hpp" | |
| 43 | |
| 0 | 44 class Block; |
| 45 class Bundle; | |
| 46 class C2Compiler; | |
| 47 class CallGenerator; | |
| 48 class ConnectionGraph; | |
| 49 class InlineTree; | |
| 50 class Int_Array; | |
| 51 class Matcher; | |
| 2008 | 52 class MachConstantNode; |
| 53 class MachConstantBaseNode; | |
| 0 | 54 class MachNode; |
| 2008 | 55 class MachOper; |
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56 class MachSafePointNode; |
| 0 | 57 class Node; |
| 58 class Node_Array; | |
| 59 class Node_Notes; | |
| 60 class OptoReg; | |
| 61 class PhaseCFG; | |
| 62 class PhaseGVN; | |
| 1172 | 63 class PhaseIterGVN; |
| 0 | 64 class PhaseRegAlloc; |
| 65 class PhaseCCP; | |
| 66 class PhaseCCP_DCE; | |
| 67 class RootNode; | |
| 68 class relocInfo; | |
| 69 class Scope; | |
| 70 class StartNode; | |
| 71 class SafePointNode; | |
| 72 class JVMState; | |
| 73 class TypeData; | |
| 74 class TypePtr; | |
| 7478 | 75 class TypeOopPtr; |
| 0 | 76 class TypeFunc; |
| 77 class Unique_Node_List; | |
| 78 class nmethod; | |
| 79 class WarmCallInfo; | |
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80 class Node_Stack; |
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81 struct Final_Reshape_Counts; |
| 0 | 82 |
| 83 //------------------------------Compile---------------------------------------- | |
| 84 // This class defines a top-level Compiler invocation. | |
| 85 | |
| 86 class Compile : public Phase { | |
| 3939 | 87 friend class VMStructs; |
| 88 | |
| 0 | 89 public: |
| 90 // Fixed alias indexes. (See also MergeMemNode.) | |
| 91 enum { | |
| 92 AliasIdxTop = 1, // pseudo-index, aliases to nothing (used as sentinel value) | |
| 93 AliasIdxBot = 2, // pseudo-index, aliases to everything | |
| 94 AliasIdxRaw = 3 // hard-wired index for TypeRawPtr::BOTTOM | |
| 95 }; | |
| 96 | |
| 97 // Variant of TraceTime(NULL, &_t_accumulator, TimeCompiler); | |
| 98 // Integrated with logging. If logging is turned on, and dolog is true, | |
| 99 // then brackets are put into the log, with time stamps and node counts. | |
| 100 // (The time collection itself is always conditionalized on TimeCompiler.) | |
| 101 class TracePhase : public TraceTime { | |
| 102 private: | |
| 103 Compile* C; | |
| 104 CompileLog* _log; | |
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105 const char* _phase_name; |
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106 bool _dolog; |
| 0 | 107 public: |
| 108 TracePhase(const char* name, elapsedTimer* accumulator, bool dolog); | |
| 109 ~TracePhase(); | |
| 110 }; | |
| 111 | |
| 112 // Information per category of alias (memory slice) | |
| 113 class AliasType { | |
| 114 private: | |
| 115 friend class Compile; | |
| 116 | |
| 117 int _index; // unique index, used with MergeMemNode | |
| 118 const TypePtr* _adr_type; // normalized address type | |
| 119 ciField* _field; // relevant instance field, or null if none | |
| 120 bool _is_rewritable; // false if the memory is write-once only | |
| 121 int _general_index; // if this is type is an instance, the general | |
| 122 // type that this is an instance of | |
| 123 | |
| 124 void Init(int i, const TypePtr* at); | |
| 125 | |
| 126 public: | |
| 127 int index() const { return _index; } | |
| 128 const TypePtr* adr_type() const { return _adr_type; } | |
| 129 ciField* field() const { return _field; } | |
| 130 bool is_rewritable() const { return _is_rewritable; } | |
| 131 bool is_volatile() const { return (_field ? _field->is_volatile() : false); } | |
| 132 int general_index() const { return (_general_index != 0) ? _general_index : _index; } | |
| 133 | |
| 134 void set_rewritable(bool z) { _is_rewritable = z; } | |
| 135 void set_field(ciField* f) { | |
| 136 assert(!_field,""); | |
| 137 _field = f; | |
| 138 if (f->is_final()) _is_rewritable = false; | |
| 139 } | |
| 140 | |
| 141 void print_on(outputStream* st) PRODUCT_RETURN; | |
| 142 }; | |
| 143 | |
| 144 enum { | |
| 145 logAliasCacheSize = 6, | |
| 146 AliasCacheSize = (1<<logAliasCacheSize) | |
| 147 }; | |
| 148 struct AliasCacheEntry { const TypePtr* _adr_type; int _index; }; // simple duple type | |
| 149 enum { | |
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150 trapHistLength = MethodData::_trap_hist_limit |
| 0 | 151 }; |
| 152 | |
| 2008 | 153 // Constant entry of the constant table. |
| 154 class Constant { | |
| 155 private: | |
| 156 BasicType _type; | |
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157 union { |
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158 jvalue _value; |
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159 Metadata* _metadata; |
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160 } _v; |
| 2008 | 161 int _offset; // offset of this constant (in bytes) relative to the constant table base. |
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162 float _freq; |
| 2008 | 163 bool _can_be_reused; // true (default) if the value can be shared with other users. |
| 164 | |
| 165 public: | |
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166 Constant() : _type(T_ILLEGAL), _offset(-1), _freq(0.0f), _can_be_reused(true) { _v._value.l = 0; } |
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167 Constant(BasicType type, jvalue value, float freq = 0.0f, bool can_be_reused = true) : |
| 2008 | 168 _type(type), |
| 169 _offset(-1), | |
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170 _freq(freq), |
| 2008 | 171 _can_be_reused(can_be_reused) |
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172 { |
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173 assert(type != T_METADATA, "wrong constructor"); |
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174 _v._value = value; |
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175 } |
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176 Constant(Metadata* metadata, bool can_be_reused = true) : |
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177 _type(T_METADATA), |
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178 _offset(-1), |
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179 _freq(0.0f), |
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180 _can_be_reused(can_be_reused) |
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181 { |
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182 _v._metadata = metadata; |
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183 } |
| 2008 | 184 |
| 185 bool operator==(const Constant& other); | |
| 186 | |
| 187 BasicType type() const { return _type; } | |
| 188 | |
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189 jlong get_jlong() const { return _v._value.j; } |
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190 jfloat get_jfloat() const { return _v._value.f; } |
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191 jdouble get_jdouble() const { return _v._value.d; } |
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192 jobject get_jobject() const { return _v._value.l; } |
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193 |
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194 Metadata* get_metadata() const { return _v._metadata; } |
| 2008 | 195 |
| 196 int offset() const { return _offset; } | |
| 197 void set_offset(int offset) { _offset = offset; } | |
| 198 | |
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199 float freq() const { return _freq; } |
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200 void inc_freq(float freq) { _freq += freq; } |
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201 |
| 2008 | 202 bool can_be_reused() const { return _can_be_reused; } |
| 203 }; | |
| 204 | |
| 205 // Constant table. | |
| 206 class ConstantTable { | |
| 207 private: | |
| 208 GrowableArray<Constant> _constants; // Constants of this table. | |
| 209 int _size; // Size in bytes the emitted constant table takes (including padding). | |
| 210 int _table_base_offset; // Offset of the table base that gets added to the constant offsets. | |
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211 int _nof_jump_tables; // Number of jump-tables in this constant table. |
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212 |
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213 static int qsort_comparator(Constant* a, Constant* b); |
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214 |
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215 // We use negative frequencies to keep the order of the |
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216 // jump-tables in which they were added. Otherwise we get into |
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217 // trouble with relocation. |
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218 float next_jump_table_freq() { return -1.0f * (++_nof_jump_tables); } |
| 2008 | 219 |
| 220 public: | |
| 221 ConstantTable() : | |
| 222 _size(-1), | |
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223 _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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224 _nof_jump_tables(0) |
| 2008 | 225 {} |
| 226 | |
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227 int size() const { assert(_size != -1, "not calculated yet"); return _size; } |
| 2008 | 228 |
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229 int calculate_table_base_offset() const; // AD specific |
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230 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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231 int table_base_offset() const { assert(_table_base_offset != -1, "not set yet"); return _table_base_offset; } |
| 2008 | 232 |
| 233 void emit(CodeBuffer& cb); | |
| 234 | |
| 235 // Returns the offset of the last entry (the top) of the constant table. | |
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236 int top_offset() const { assert(_constants.top().offset() != -1, "not bound yet"); return _constants.top().offset(); } |
| 2008 | 237 |
| 238 void calculate_offsets_and_size(); | |
| 239 int find_offset(Constant& con) const; | |
| 240 | |
| 241 void add(Constant& con); | |
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242 Constant add(MachConstantNode* n, BasicType type, jvalue value); |
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243 Constant add(Metadata* metadata); |
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244 Constant add(MachConstantNode* n, MachOper* oper); |
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245 Constant add(MachConstantNode* n, jfloat f) { |
| 2008 | 246 jvalue value; value.f = f; |
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247 return add(n, T_FLOAT, value); |
| 2008 | 248 } |
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249 Constant add(MachConstantNode* n, jdouble d) { |
| 2008 | 250 jvalue value; value.d = d; |
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251 return add(n, T_DOUBLE, value); |
| 2008 | 252 } |
| 253 | |
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254 // Jump-table |
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255 Constant add_jump_table(MachConstantNode* n); |
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256 void fill_jump_table(CodeBuffer& cb, MachConstantNode* n, GrowableArray<Label*> labels) const; |
| 2008 | 257 }; |
| 258 | |
| 0 | 259 private: |
| 260 // Fixed parameters to this compilation. | |
| 261 const int _compile_id; | |
| 262 const bool _save_argument_registers; // save/restore arg regs for trampolines | |
| 263 const bool _subsume_loads; // Load can be matched as part of a larger op. | |
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264 const bool _do_escape_analysis; // Do escape analysis. |
| 10278 | 265 const bool _eliminate_boxing; // Do boxing elimination. |
| 0 | 266 ciMethod* _method; // The method being compiled. |
| 267 int _entry_bci; // entry bci for osr methods. | |
| 268 const TypeFunc* _tf; // My kind of signature | |
| 269 InlineTree* _ilt; // Ditto (temporary). | |
| 270 address _stub_function; // VM entry for stub being compiled, or NULL | |
| 271 const char* _stub_name; // Name of stub or adapter being compiled, or NULL | |
| 272 address _stub_entry_point; // Compile code entry for generated stub, or NULL | |
| 273 | |
| 274 // Control of this compilation. | |
| 275 int _num_loop_opts; // Number of iterations for doing loop optimiztions | |
| 276 int _max_inline_size; // Max inline size for this compilation | |
| 277 int _freq_inline_size; // Max hot method inline size for this compilation | |
| 278 int _fixed_slots; // count of frame slots not allocated by the register | |
| 279 // allocator i.e. locks, original deopt pc, etc. | |
| 280 // For deopt | |
| 281 int _orig_pc_slot; | |
| 282 int _orig_pc_slot_offset_in_bytes; | |
| 283 | |
| 284 int _major_progress; // Count of something big happening | |
| 7473 | 285 bool _inlining_progress; // progress doing incremental inlining? |
| 286 bool _inlining_incrementally;// Are we doing incremental inlining (post parse) | |
| 0 | 287 bool _has_loops; // True if the method _may_ have some loops |
| 288 bool _has_split_ifs; // True if the method _may_ have some split-if | |
| 289 bool _has_unsafe_access; // True if the method _may_ produce faults in unsafe loads or stores. | |
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290 bool _has_stringbuilder; // True StringBuffers or StringBuilders are allocated |
| 10278 | 291 bool _has_boxed_value; // True if a boxed object is allocated |
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292 int _max_vector_size; // Maximum size of generated vectors |
| 0 | 293 uint _trap_hist[trapHistLength]; // Cumulative traps |
| 294 bool _trap_can_recompile; // Have we emitted a recompiling trap? | |
| 295 uint _decompile_count; // Cumulative decompilation counts. | |
| 296 bool _do_inlining; // True if we intend to do inlining | |
| 297 bool _do_scheduling; // True if we intend to do scheduling | |
| 418 | 298 bool _do_freq_based_layout; // True if we intend to do frequency based block layout |
| 0 | 299 bool _do_count_invocations; // True if we generate code to count invocations |
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300 bool _do_method_data_update; // True if we generate code to update MethodData*s |
| 0 | 301 int _AliasLevel; // Locally-adjusted version of AliasLevel flag. |
| 302 bool _print_assembly; // True if we should dump assembly code for this compilation | |
| 303 #ifndef PRODUCT | |
| 304 bool _trace_opto_output; | |
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305 bool _parsed_irreducible_loop; // True if ciTypeFlow detected irreducible loops during parsing |
| 0 | 306 #endif |
| 307 | |
| 1265 | 308 // JSR 292 |
| 309 bool _has_method_handle_invokes; // True if this method has MethodHandle invokes. | |
| 310 | |
| 0 | 311 // Compilation environment. |
| 312 Arena _comp_arena; // Arena with lifetime equivalent to Compile | |
| 313 ciEnv* _env; // CI interface | |
| 314 CompileLog* _log; // from CompilerThread | |
| 315 const char* _failure_reason; // for record_failure/failing pattern | |
| 316 GrowableArray<CallGenerator*>* _intrinsics; // List of intrinsics. | |
| 317 GrowableArray<Node*>* _macro_nodes; // List of nodes which need to be expanded before matching. | |
| 1172 | 318 GrowableArray<Node*>* _predicate_opaqs; // List of Opaque1 nodes for the loop predicates. |
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319 GrowableArray<Node*>* _expensive_nodes; // List of nodes that are expensive to compute and that we'd better not let the GVN freely common |
| 0 | 320 ConnectionGraph* _congraph; |
| 321 #ifndef PRODUCT | |
| 322 IdealGraphPrinter* _printer; | |
| 323 #endif | |
| 324 | |
| 325 // Node management | |
| 326 uint _unique; // Counter for unique Node indices | |
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327 VectorSet _dead_node_list; // Set of dead nodes |
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328 uint _dead_node_count; // Number of dead nodes; VectorSet::Size() is O(N). |
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329 // So use this to keep count and make the call O(1). |
| 0 | 330 debug_only(static int _debug_idx;) // Monotonic counter (not reset), use -XX:BreakAtNode=<idx> |
| 331 Arena _node_arena; // Arena for new-space Nodes | |
| 332 Arena _old_arena; // Arena for old-space Nodes, lifetime during xform | |
| 333 RootNode* _root; // Unique root of compilation, or NULL after bail-out. | |
| 334 Node* _top; // Unique top node. (Reset by various phases.) | |
| 335 | |
| 336 Node* _immutable_memory; // Initial memory state | |
| 337 | |
| 338 Node* _recent_alloc_obj; | |
| 339 Node* _recent_alloc_ctl; | |
| 340 | |
| 2008 | 341 // Constant table |
| 342 ConstantTable _constant_table; // The constant table for this compile. | |
| 343 MachConstantBaseNode* _mach_constant_base_node; // Constant table base node singleton. | |
| 344 | |
| 345 | |
| 0 | 346 // Blocked array of debugging and profiling information, |
| 347 // tracked per node. | |
| 348 enum { _log2_node_notes_block_size = 8, | |
| 349 _node_notes_block_size = (1<<_log2_node_notes_block_size) | |
| 350 }; | |
| 351 GrowableArray<Node_Notes*>* _node_note_array; | |
| 352 Node_Notes* _default_node_notes; // default notes for new nodes | |
| 353 | |
| 354 // After parsing and every bulk phase we hang onto the Root instruction. | |
| 355 // The RootNode instruction is where the whole program begins. It produces | |
| 356 // the initial Control and BOTTOM for everybody else. | |
| 357 | |
| 358 // Type management | |
| 359 Arena _Compile_types; // Arena for all types | |
| 360 Arena* _type_arena; // Alias for _Compile_types except in Initialize_shared() | |
| 361 Dict* _type_dict; // Intern table | |
| 362 void* _type_hwm; // Last allocation (see Type::operator new/delete) | |
| 363 size_t _type_last_size; // Last allocation size (see Type::operator new/delete) | |
| 364 ciMethod* _last_tf_m; // Cache for | |
| 365 const TypeFunc* _last_tf; // TypeFunc::make | |
| 366 AliasType** _alias_types; // List of alias types seen so far. | |
| 367 int _num_alias_types; // Logical length of _alias_types | |
| 368 int _max_alias_types; // Physical length of _alias_types | |
| 369 AliasCacheEntry _alias_cache[AliasCacheSize]; // Gets aliases w/o data structure walking | |
| 370 | |
| 371 // Parsing, optimization | |
| 372 PhaseGVN* _initial_gvn; // Results of parse-time PhaseGVN | |
| 373 Unique_Node_List* _for_igvn; // Initial work-list for next round of Iterative GVN | |
| 374 WarmCallInfo* _warm_calls; // Sorted work-list for heat-based inlining. | |
| 375 | |
| 7473 | 376 GrowableArray<CallGenerator*> _late_inlines; // List of CallGenerators to be revisited after |
| 377 // main parsing has finished. | |
| 378 GrowableArray<CallGenerator*> _string_late_inlines; // same but for string operations | |
| 379 | |
| 10278 | 380 GrowableArray<CallGenerator*> _boxing_late_inlines; // same but for boxing operations |
| 381 | |
| 7473 | 382 int _late_inlines_pos; // Where in the queue should the next late inlining candidate go (emulate depth first inlining) |
| 383 uint _number_of_mh_late_inlines; // number of method handle late inlining still pending | |
| 384 | |
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385 |
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386 // Inlining may not happen in parse order which would make |
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387 // PrintInlining output confusing. Keep track of PrintInlining |
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388 // pieces in order. |
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389 class PrintInliningBuffer : public ResourceObj { |
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390 private: |
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391 CallGenerator* _cg; |
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392 stringStream* _ss; |
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393 |
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394 public: |
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395 PrintInliningBuffer() |
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396 : _cg(NULL) { _ss = new stringStream(); } |
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397 |
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398 stringStream* ss() const { return _ss; } |
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399 CallGenerator* cg() const { return _cg; } |
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400 void set_cg(CallGenerator* cg) { _cg = cg; } |
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401 }; |
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402 |
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403 GrowableArray<PrintInliningBuffer>* _print_inlining_list; |
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404 int _print_inlining; |
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405 |
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406 // Only keep nodes in the expensive node list that need to be optimized |
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407 void cleanup_expensive_nodes(PhaseIterGVN &igvn); |
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408 // Use for sorting expensive nodes to bring similar nodes together |
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409 static int cmp_expensive_nodes(Node** n1, Node** n2); |
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410 // Expensive nodes list already sorted? |
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411 bool expensive_nodes_sorted() const; |
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412 |
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413 public: |
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414 |
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415 outputStream* print_inlining_stream() const { |
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416 return _print_inlining_list->at(_print_inlining).ss(); |
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417 } |
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418 |
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419 void print_inlining_skip(CallGenerator* cg) { |
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420 if (PrintInlining) { |
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421 _print_inlining_list->at(_print_inlining).set_cg(cg); |
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422 _print_inlining++; |
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423 _print_inlining_list->insert_before(_print_inlining, PrintInliningBuffer()); |
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424 } |
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425 } |
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426 |
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427 void print_inlining_insert(CallGenerator* cg) { |
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428 if (PrintInlining) { |
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429 for (int i = 0; i < _print_inlining_list->length(); i++) { |
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430 if (_print_inlining_list->at(i).cg() == cg) { |
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431 _print_inlining_list->insert_before(i+1, PrintInliningBuffer()); |
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432 _print_inlining = i+1; |
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433 _print_inlining_list->at(i).set_cg(NULL); |
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434 return; |
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435 } |
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436 } |
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437 ShouldNotReachHere(); |
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438 } |
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439 } |
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440 |
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441 void print_inlining(ciMethod* method, int inline_level, int bci, const char* msg = NULL) { |
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442 stringStream ss; |
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443 CompileTask::print_inlining(&ss, method, inline_level, bci, msg); |
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444 print_inlining_stream()->print(ss.as_string()); |
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445 } |
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446 |
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447 private: |
| 0 | 448 // Matching, CFG layout, allocation, code generation |
| 449 PhaseCFG* _cfg; // Results of CFG finding | |
| 450 bool _select_24_bit_instr; // We selected an instruction with a 24-bit result | |
| 451 bool _in_24_bit_fp_mode; // We are emitting instructions with 24-bit results | |
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452 int _java_calls; // Number of java calls in the method |
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453 int _inner_loops; // Number of inner loops in the method |
| 0 | 454 Matcher* _matcher; // Engine to map ideal to machine instructions |
| 455 PhaseRegAlloc* _regalloc; // Results of register allocation. | |
| 456 int _frame_slots; // Size of total frame in stack slots | |
| 457 CodeOffsets _code_offsets; // Offsets into the code for various interesting entries | |
| 458 RegMask _FIRST_STACK_mask; // All stack slots usable for spills (depends on frame layout) | |
| 459 Arena* _indexSet_arena; // control IndexSet allocation within PhaseChaitin | |
| 460 void* _indexSet_free_block_list; // free list of IndexSet bit blocks | |
| 461 | |
| 462 uint _node_bundling_limit; | |
| 463 Bundle* _node_bundling_base; // Information for instruction bundling | |
| 464 | |
| 465 // Instruction bits passed off to the VM | |
| 466 int _method_size; // Size of nmethod code segment in bytes | |
| 467 CodeBuffer _code_buffer; // Where the code is assembled | |
| 468 int _first_block_size; // Size of unvalidated entry point code / OSR poison code | |
| 469 ExceptionHandlerTable _handler_table; // Table of native-code exception handlers | |
| 470 ImplicitExceptionTable _inc_table; // Table of implicit null checks in native code | |
| 471 OopMapSet* _oop_map_set; // Table of oop maps (one for each safepoint location) | |
| 472 static int _CompiledZap_count; // counter compared against CompileZap[First/Last] | |
| 473 BufferBlob* _scratch_buffer_blob; // For temporary code buffers. | |
| 474 relocInfo* _scratch_locs_memory; // For temporary code buffers. | |
| 2008 | 475 int _scratch_const_size; // For temporary code buffers. |
| 476 bool _in_scratch_emit_size; // true when in scratch_emit_size. | |
| 0 | 477 |
| 478 public: | |
| 479 // Accessors | |
| 480 | |
| 481 // The Compile instance currently active in this (compiler) thread. | |
| 482 static Compile* current() { | |
| 483 return (Compile*) ciEnv::current()->compiler_data(); | |
| 484 } | |
| 485 | |
| 486 // ID for this compilation. Useful for setting breakpoints in the debugger. | |
| 487 int compile_id() const { return _compile_id; } | |
| 488 | |
| 489 // Does this compilation allow instructions to subsume loads? User | |
| 490 // instructions that subsume a load may result in an unschedulable | |
| 491 // instruction sequence. | |
| 492 bool subsume_loads() const { return _subsume_loads; } | |
| 10278 | 493 /** Do escape analysis. */ |
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494 bool do_escape_analysis() const { return _do_escape_analysis; } |
| 10278 | 495 /** Do boxing elimination. */ |
| 496 bool eliminate_boxing() const { return _eliminate_boxing; } | |
| 497 /** Do aggressive boxing elimination. */ | |
| 498 bool aggressive_unboxing() const { return _eliminate_boxing && AggressiveUnboxing; } | |
| 0 | 499 bool save_argument_registers() const { return _save_argument_registers; } |
| 500 | |
| 501 | |
| 502 // Other fixed compilation parameters. | |
| 503 ciMethod* method() const { return _method; } | |
| 504 int entry_bci() const { return _entry_bci; } | |
| 505 bool is_osr_compilation() const { return _entry_bci != InvocationEntryBci; } | |
| 506 bool is_method_compilation() const { return (_method != NULL && !_method->flags().is_native()); } | |
| 507 const TypeFunc* tf() const { assert(_tf!=NULL, ""); return _tf; } | |
| 508 void init_tf(const TypeFunc* tf) { assert(_tf==NULL, ""); _tf = tf; } | |
| 509 InlineTree* ilt() const { return _ilt; } | |
| 510 address stub_function() const { return _stub_function; } | |
| 511 const char* stub_name() const { return _stub_name; } | |
| 512 address stub_entry_point() const { return _stub_entry_point; } | |
| 513 | |
| 514 // Control of this compilation. | |
| 515 int fixed_slots() const { assert(_fixed_slots >= 0, ""); return _fixed_slots; } | |
| 516 void set_fixed_slots(int n) { _fixed_slots = n; } | |
| 517 int major_progress() const { return _major_progress; } | |
| 7473 | 518 void set_inlining_progress(bool z) { _inlining_progress = z; } |
| 519 int inlining_progress() const { return _inlining_progress; } | |
| 520 void set_inlining_incrementally(bool z) { _inlining_incrementally = z; } | |
| 521 int inlining_incrementally() const { return _inlining_incrementally; } | |
| 0 | 522 void set_major_progress() { _major_progress++; } |
| 523 void clear_major_progress() { _major_progress = 0; } | |
| 524 int num_loop_opts() const { return _num_loop_opts; } | |
| 525 void set_num_loop_opts(int n) { _num_loop_opts = n; } | |
| 526 int max_inline_size() const { return _max_inline_size; } | |
| 527 void set_freq_inline_size(int n) { _freq_inline_size = n; } | |
| 528 int freq_inline_size() const { return _freq_inline_size; } | |
| 529 void set_max_inline_size(int n) { _max_inline_size = n; } | |
| 530 bool has_loops() const { return _has_loops; } | |
| 531 void set_has_loops(bool z) { _has_loops = z; } | |
| 532 bool has_split_ifs() const { return _has_split_ifs; } | |
| 533 void set_has_split_ifs(bool z) { _has_split_ifs = z; } | |
| 534 bool has_unsafe_access() const { return _has_unsafe_access; } | |
| 535 void set_has_unsafe_access(bool z) { _has_unsafe_access = z; } | |
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536 bool has_stringbuilder() const { return _has_stringbuilder; } |
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537 void set_has_stringbuilder(bool z) { _has_stringbuilder = z; } |
| 10278 | 538 bool has_boxed_value() const { return _has_boxed_value; } |
| 539 void set_has_boxed_value(bool z) { _has_boxed_value = z; } | |
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540 int max_vector_size() const { return _max_vector_size; } |
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541 void set_max_vector_size(int s) { _max_vector_size = s; } |
| 0 | 542 void set_trap_count(uint r, uint c) { assert(r < trapHistLength, "oob"); _trap_hist[r] = c; } |
| 543 uint trap_count(uint r) const { assert(r < trapHistLength, "oob"); return _trap_hist[r]; } | |
| 544 bool trap_can_recompile() const { return _trap_can_recompile; } | |
| 545 void set_trap_can_recompile(bool z) { _trap_can_recompile = z; } | |
| 546 uint decompile_count() const { return _decompile_count; } | |
| 547 void set_decompile_count(uint c) { _decompile_count = c; } | |
| 548 bool allow_range_check_smearing() const; | |
| 549 bool do_inlining() const { return _do_inlining; } | |
| 550 void set_do_inlining(bool z) { _do_inlining = z; } | |
| 551 bool do_scheduling() const { return _do_scheduling; } | |
| 552 void set_do_scheduling(bool z) { _do_scheduling = z; } | |
| 418 | 553 bool do_freq_based_layout() const{ return _do_freq_based_layout; } |
| 554 void set_do_freq_based_layout(bool z){ _do_freq_based_layout = z; } | |
| 0 | 555 bool do_count_invocations() const{ return _do_count_invocations; } |
| 556 void set_do_count_invocations(bool z){ _do_count_invocations = z; } | |
| 557 bool do_method_data_update() const { return _do_method_data_update; } | |
| 558 void set_do_method_data_update(bool z) { _do_method_data_update = z; } | |
| 559 int AliasLevel() const { return _AliasLevel; } | |
| 560 bool print_assembly() const { return _print_assembly; } | |
| 561 void set_print_assembly(bool z) { _print_assembly = z; } | |
| 562 // check the CompilerOracle for special behaviours for this compile | |
| 563 bool method_has_option(const char * option) { | |
| 564 return method() != NULL && method()->has_option(option); | |
| 565 } | |
| 566 #ifndef PRODUCT | |
| 567 bool trace_opto_output() const { return _trace_opto_output; } | |
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568 bool parsed_irreducible_loop() const { return _parsed_irreducible_loop; } |
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569 void set_parsed_irreducible_loop(bool z) { _parsed_irreducible_loop = z; } |
| 0 | 570 #endif |
| 571 | |
| 1265 | 572 // JSR 292 |
| 573 bool has_method_handle_invokes() const { return _has_method_handle_invokes; } | |
| 574 void set_has_method_handle_invokes(bool z) { _has_method_handle_invokes = z; } | |
| 575 | |
| 0 | 576 void begin_method() { |
| 577 #ifndef PRODUCT | |
| 578 if (_printer) _printer->begin_method(this); | |
| 579 #endif | |
| 580 } | |
| 581 void print_method(const char * name, int level = 1) { | |
| 582 #ifndef PRODUCT | |
| 583 if (_printer) _printer->print_method(this, name, level); | |
| 584 #endif | |
| 585 } | |
| 586 void end_method() { | |
| 587 #ifndef PRODUCT | |
| 588 if (_printer) _printer->end_method(); | |
| 589 #endif | |
| 590 } | |
| 591 | |
| 10278 | 592 int macro_count() const { return _macro_nodes->length(); } |
| 593 int predicate_count() const { return _predicate_opaqs->length();} | |
| 594 int expensive_count() const { return _expensive_nodes->length(); } | |
| 595 Node* macro_node(int idx) const { return _macro_nodes->at(idx); } | |
| 596 Node* predicate_opaque1_node(int idx) const { return _predicate_opaqs->at(idx);} | |
| 597 Node* expensive_node(int idx) const { return _expensive_nodes->at(idx); } | |
| 0 | 598 ConnectionGraph* congraph() { return _congraph;} |
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599 void set_congraph(ConnectionGraph* congraph) { _congraph = congraph;} |
| 0 | 600 void add_macro_node(Node * n) { |
| 601 //assert(n->is_macro(), "must be a macro node"); | |
| 602 assert(!_macro_nodes->contains(n), " duplicate entry in expand list"); | |
| 603 _macro_nodes->append(n); | |
| 604 } | |
| 605 void remove_macro_node(Node * n) { | |
| 606 // this function may be called twice for a node so check | |
| 607 // that the node is in the array before attempting to remove it | |
| 608 if (_macro_nodes->contains(n)) | |
| 609 _macro_nodes->remove(n); | |
| 1172 | 610 // remove from _predicate_opaqs list also if it is there |
| 611 if (predicate_count() > 0 && _predicate_opaqs->contains(n)){ | |
| 612 _predicate_opaqs->remove(n); | |
| 613 } | |
| 0 | 614 } |
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615 void add_expensive_node(Node * n); |
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616 void remove_expensive_node(Node * n) { |
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617 if (_expensive_nodes->contains(n)) { |
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618 _expensive_nodes->remove(n); |
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619 } |
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620 } |
| 1172 | 621 void add_predicate_opaq(Node * n) { |
| 622 assert(!_predicate_opaqs->contains(n), " duplicate entry in predicate opaque1"); | |
| 623 assert(_macro_nodes->contains(n), "should have already been in macro list"); | |
| 624 _predicate_opaqs->append(n); | |
| 625 } | |
| 626 // remove the opaque nodes that protect the predicates so that the unused checks and | |
| 627 // uncommon traps will be eliminated from the graph. | |
| 628 void cleanup_loop_predicates(PhaseIterGVN &igvn); | |
| 2445 | 629 bool is_predicate_opaq(Node * n) { |
| 630 return _predicate_opaqs->contains(n); | |
| 631 } | |
| 0 | 632 |
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633 // Are there candidate expensive nodes for optimization? |
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634 bool should_optimize_expensive_nodes(PhaseIterGVN &igvn); |
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635 // Check whether n1 and n2 are similar |
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636 static int cmp_expensive_nodes(Node* n1, Node* n2); |
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637 // Sort expensive nodes to locate similar expensive nodes |
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638 void sort_expensive_nodes(); |
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639 |
| 0 | 640 // Compilation environment. |
| 641 Arena* comp_arena() { return &_comp_arena; } | |
| 642 ciEnv* env() const { return _env; } | |
| 643 CompileLog* log() const { return _log; } | |
| 644 bool failing() const { return _env->failing() || _failure_reason != NULL; } | |
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645 const char* failure_reason() { return _failure_reason; } |
| 0 | 646 bool failure_reason_is(const char* r) { return (r==_failure_reason) || (r!=NULL && _failure_reason!=NULL && strcmp(r, _failure_reason)==0); } |
| 647 | |
| 648 void record_failure(const char* reason); | |
| 649 void record_method_not_compilable(const char* reason, bool all_tiers = false) { | |
| 650 // All bailouts cover "all_tiers" when TieredCompilation is off. | |
| 651 if (!TieredCompilation) all_tiers = true; | |
| 652 env()->record_method_not_compilable(reason, all_tiers); | |
| 653 // Record failure reason. | |
| 654 record_failure(reason); | |
| 655 } | |
| 656 void record_method_not_compilable_all_tiers(const char* reason) { | |
| 657 record_method_not_compilable(reason, true); | |
| 658 } | |
| 659 bool check_node_count(uint margin, const char* reason) { | |
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660 if (live_nodes() + margin > (uint)MaxNodeLimit) { |
| 0 | 661 record_method_not_compilable(reason); |
| 662 return true; | |
| 663 } else { | |
| 664 return false; | |
| 665 } | |
| 666 } | |
| 667 | |
| 668 // Node management | |
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669 uint unique() const { return _unique; } |
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670 uint next_unique() { return _unique++; } |
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671 void set_unique(uint i) { _unique = i; } |
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672 static int debug_idx() { return debug_only(_debug_idx)+0; } |
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673 static void set_debug_idx(int i) { debug_only(_debug_idx = i); } |
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674 Arena* node_arena() { return &_node_arena; } |
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675 Arena* old_arena() { return &_old_arena; } |
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676 RootNode* root() const { return _root; } |
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677 void set_root(RootNode* r) { _root = r; } |
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678 StartNode* start() const; // (Derived from root.) |
| 0 | 679 void init_start(StartNode* s); |
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680 Node* immutable_memory(); |
| 0 | 681 |
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682 Node* recent_alloc_ctl() const { return _recent_alloc_ctl; } |
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683 Node* recent_alloc_obj() const { return _recent_alloc_obj; } |
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684 void set_recent_alloc(Node* ctl, Node* obj) { |
| 0 | 685 _recent_alloc_ctl = ctl; |
| 686 _recent_alloc_obj = obj; | |
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687 } |
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688 void record_dead_node(uint idx) { if (_dead_node_list.test_set(idx)) return; |
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689 _dead_node_count++; |
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690 } |
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691 bool is_dead_node(uint idx) { return _dead_node_list.test(idx) != 0; } |
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692 uint dead_node_count() { return _dead_node_count; } |
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693 void reset_dead_node_list() { _dead_node_list.Reset(); |
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694 _dead_node_count = 0; |
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695 } |
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696 uint live_nodes() const { |
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697 int val = _unique - _dead_node_count; |
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698 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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699 return (uint) val; |
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700 } |
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701 #ifdef ASSERT |
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702 uint count_live_nodes_by_graph_walk(); |
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703 void print_missing_nodes(); |
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704 #endif |
| 0 | 705 |
| 2008 | 706 // Constant table |
| 707 ConstantTable& constant_table() { return _constant_table; } | |
| 708 | |
| 709 MachConstantBaseNode* mach_constant_base_node(); | |
| 710 bool has_mach_constant_base_node() const { return _mach_constant_base_node != NULL; } | |
| 711 | |
| 0 | 712 // Handy undefined Node |
| 713 Node* top() const { return _top; } | |
| 714 | |
| 715 // these are used by guys who need to know about creation and transformation of top: | |
| 716 Node* cached_top_node() { return _top; } | |
| 717 void set_cached_top_node(Node* tn); | |
| 718 | |
| 719 GrowableArray<Node_Notes*>* node_note_array() const { return _node_note_array; } | |
| 720 void set_node_note_array(GrowableArray<Node_Notes*>* arr) { _node_note_array = arr; } | |
| 721 Node_Notes* default_node_notes() const { return _default_node_notes; } | |
| 722 void set_default_node_notes(Node_Notes* n) { _default_node_notes = n; } | |
| 723 | |
| 724 Node_Notes* node_notes_at(int idx) { | |
| 725 return locate_node_notes(_node_note_array, idx, false); | |
| 726 } | |
| 727 inline bool set_node_notes_at(int idx, Node_Notes* value); | |
| 728 | |
| 729 // Copy notes from source to dest, if they exist. | |
| 730 // Overwrite dest only if source provides something. | |
| 731 // Return true if information was moved. | |
| 732 bool copy_node_notes_to(Node* dest, Node* source); | |
| 733 | |
| 734 // Workhorse function to sort out the blocked Node_Notes array: | |
| 735 inline Node_Notes* locate_node_notes(GrowableArray<Node_Notes*>* arr, | |
| 736 int idx, bool can_grow = false); | |
| 737 | |
| 738 void grow_node_notes(GrowableArray<Node_Notes*>* arr, int grow_by); | |
| 739 | |
| 740 // Type management | |
| 741 Arena* type_arena() { return _type_arena; } | |
| 742 Dict* type_dict() { return _type_dict; } | |
| 743 void* type_hwm() { return _type_hwm; } | |
| 744 size_t type_last_size() { return _type_last_size; } | |
| 745 int num_alias_types() { return _num_alias_types; } | |
| 746 | |
| 747 void init_type_arena() { _type_arena = &_Compile_types; } | |
| 748 void set_type_arena(Arena* a) { _type_arena = a; } | |
| 749 void set_type_dict(Dict* d) { _type_dict = d; } | |
| 750 void set_type_hwm(void* p) { _type_hwm = p; } | |
| 751 void set_type_last_size(size_t sz) { _type_last_size = sz; } | |
| 752 | |
| 753 const TypeFunc* last_tf(ciMethod* m) { | |
| 754 return (m == _last_tf_m) ? _last_tf : NULL; | |
| 755 } | |
| 756 void set_last_tf(ciMethod* m, const TypeFunc* tf) { | |
| 757 assert(m != NULL || tf == NULL, ""); | |
| 758 _last_tf_m = m; | |
| 759 _last_tf = tf; | |
| 760 } | |
| 761 | |
| 762 AliasType* alias_type(int idx) { assert(idx < num_alias_types(), "oob"); return _alias_types[idx]; } | |
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763 AliasType* alias_type(const TypePtr* adr_type, ciField* field = NULL) { return find_alias_type(adr_type, false, field); } |
| 0 | 764 bool have_alias_type(const TypePtr* adr_type); |
| 765 AliasType* alias_type(ciField* field); | |
| 766 | |
| 767 int get_alias_index(const TypePtr* at) { return alias_type(at)->index(); } | |
| 768 const TypePtr* get_adr_type(uint aidx) { return alias_type(aidx)->adr_type(); } | |
| 769 int get_general_index(uint aidx) { return alias_type(aidx)->general_index(); } | |
| 770 | |
| 771 // Building nodes | |
| 772 void rethrow_exceptions(JVMState* jvms); | |
| 773 void return_values(JVMState* jvms); | |
| 774 JVMState* build_start_state(StartNode* start, const TypeFunc* tf); | |
| 775 | |
| 776 // Decide how to build a call. | |
| 777 // The profile factor is a discount to apply to this site's interp. profile. | |
| 7478 | 778 CallGenerator* call_generator(ciMethod* call_method, int vtable_index, bool call_does_dispatch, JVMState* jvms, bool allow_inline, float profile_factor, bool allow_intrinsics = true, bool delayed_forbidden = false); |
| 10278 | 779 bool should_delay_inlining(ciMethod* call_method, JVMState* jvms) { |
| 780 return should_delay_string_inlining(call_method, jvms) || | |
| 781 should_delay_boxing_inlining(call_method, jvms); | |
| 782 } | |
| 783 bool should_delay_string_inlining(ciMethod* call_method, JVMState* jvms); | |
| 784 bool should_delay_boxing_inlining(ciMethod* call_method, JVMState* jvms); | |
| 0 | 785 |
| 7478 | 786 // Helper functions to identify inlining potential at call-site |
| 787 ciMethod* optimize_virtual_call(ciMethod* caller, int bci, ciInstanceKlass* klass, | |
| 788 ciMethod* callee, const TypeOopPtr* receiver_type, | |
| 789 bool is_virtual, | |
| 790 bool &call_does_dispatch, int &vtable_index); | |
| 791 ciMethod* optimize_inlining(ciMethod* caller, int bci, ciInstanceKlass* klass, | |
| 792 ciMethod* callee, const TypeOopPtr* receiver_type); | |
| 793 | |
| 0 | 794 // Report if there were too many traps at a current method and bci. |
| 795 // Report if a trap was recorded, and/or PerMethodTrapLimit was exceeded. | |
| 796 // If there is no MDO at all, report no trap unless told to assume it. | |
| 797 bool too_many_traps(ciMethod* method, int bci, Deoptimization::DeoptReason reason); | |
| 798 // This version, unspecific to a particular bci, asks if | |
| 799 // PerMethodTrapLimit was exceeded for all inlined methods seen so far. | |
| 800 bool too_many_traps(Deoptimization::DeoptReason reason, | |
| 801 // Privately used parameter for logging: | |
| 802 ciMethodData* logmd = NULL); | |
| 803 // Report if there were too many recompiles at a method and bci. | |
| 804 bool too_many_recompiles(ciMethod* method, int bci, Deoptimization::DeoptReason reason); | |
| 805 | |
| 806 // Parsing, optimization | |
| 807 PhaseGVN* initial_gvn() { return _initial_gvn; } | |
| 808 Unique_Node_List* for_igvn() { return _for_igvn; } | |
| 809 inline void record_for_igvn(Node* n); // Body is after class Unique_Node_List. | |
| 810 void set_initial_gvn(PhaseGVN *gvn) { _initial_gvn = gvn; } | |
| 811 void set_for_igvn(Unique_Node_List *for_igvn) { _for_igvn = for_igvn; } | |
| 812 | |
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813 // Replace n by nn using initial_gvn, calling hash_delete and |
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814 // record_for_igvn as needed. |
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815 void gvn_replace_by(Node* n, Node* nn); |
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816 |
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817 |
| 0 | 818 void identify_useful_nodes(Unique_Node_List &useful); |
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819 void update_dead_node_list(Unique_Node_List &useful); |
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820 void remove_useless_nodes (Unique_Node_List &useful); |
| 0 | 821 |
| 822 WarmCallInfo* warm_calls() const { return _warm_calls; } | |
| 823 void set_warm_calls(WarmCallInfo* l) { _warm_calls = l; } | |
| 824 WarmCallInfo* pop_warm_call(); | |
| 825 | |
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826 // Record this CallGenerator for inlining at the end of parsing. |
| 7473 | 827 void add_late_inline(CallGenerator* cg) { |
| 828 _late_inlines.insert_before(_late_inlines_pos, cg); | |
| 829 _late_inlines_pos++; | |
| 830 } | |
| 831 | |
| 832 void prepend_late_inline(CallGenerator* cg) { | |
| 833 _late_inlines.insert_before(0, cg); | |
| 834 } | |
| 835 | |
| 836 void add_string_late_inline(CallGenerator* cg) { | |
| 837 _string_late_inlines.push(cg); | |
| 838 } | |
| 839 | |
| 10278 | 840 void add_boxing_late_inline(CallGenerator* cg) { |
| 841 _boxing_late_inlines.push(cg); | |
| 842 } | |
| 843 | |
| 7473 | 844 void remove_useless_late_inlines(GrowableArray<CallGenerator*>* inlines, Unique_Node_List &useful); |
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845 |
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846 void dump_inlining(); |
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847 |
| 7473 | 848 bool over_inlining_cutoff() const { |
| 849 if (!inlining_incrementally()) { | |
| 850 return unique() > (uint)NodeCountInliningCutoff; | |
| 851 } else { | |
| 852 return live_nodes() > (uint)LiveNodeCountInliningCutoff; | |
| 853 } | |
| 854 } | |
| 855 | |
| 856 void inc_number_of_mh_late_inlines() { _number_of_mh_late_inlines++; } | |
| 857 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--; } | |
| 858 bool has_mh_late_inlines() const { return _number_of_mh_late_inlines > 0; } | |
| 859 | |
| 860 void inline_incrementally_one(PhaseIterGVN& igvn); | |
| 861 void inline_incrementally(PhaseIterGVN& igvn); | |
| 862 void inline_string_calls(bool parse_time); | |
| 10278 | 863 void inline_boxing_calls(PhaseIterGVN& igvn); |
| 7473 | 864 |
| 0 | 865 // Matching, CFG layout, allocation, code generation |
| 866 PhaseCFG* cfg() { return _cfg; } | |
| 867 bool select_24_bit_instr() const { return _select_24_bit_instr; } | |
| 868 bool in_24_bit_fp_mode() const { return _in_24_bit_fp_mode; } | |
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869 bool has_java_calls() const { return _java_calls > 0; } |
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870 int java_calls() const { return _java_calls; } |
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871 int inner_loops() const { return _inner_loops; } |
| 0 | 872 Matcher* matcher() { return _matcher; } |
| 873 PhaseRegAlloc* regalloc() { return _regalloc; } | |
| 874 int frame_slots() const { return _frame_slots; } | |
| 875 int frame_size_in_words() const; // frame_slots in units of the polymorphic 'words' | |
| 876 RegMask& FIRST_STACK_mask() { return _FIRST_STACK_mask; } | |
| 877 Arena* indexSet_arena() { return _indexSet_arena; } | |
| 878 void* indexSet_free_block_list() { return _indexSet_free_block_list; } | |
| 879 uint node_bundling_limit() { return _node_bundling_limit; } | |
| 880 Bundle* node_bundling_base() { return _node_bundling_base; } | |
| 881 void set_node_bundling_limit(uint n) { _node_bundling_limit = n; } | |
| 882 void set_node_bundling_base(Bundle* b) { _node_bundling_base = b; } | |
| 883 bool starts_bundle(const Node *n) const; | |
| 884 bool need_stack_bang(int frame_size_in_bytes) const; | |
| 885 bool need_register_stack_bang() const; | |
| 886 | |
| 887 void set_matcher(Matcher* m) { _matcher = m; } | |
| 888 //void set_regalloc(PhaseRegAlloc* ra) { _regalloc = ra; } | |
| 889 void set_indexSet_arena(Arena* a) { _indexSet_arena = a; } | |
| 890 void set_indexSet_free_block_list(void* p) { _indexSet_free_block_list = p; } | |
| 891 | |
| 892 // Remember if this compilation changes hardware mode to 24-bit precision | |
| 893 void set_24_bit_selection_and_mode(bool selection, bool mode) { | |
| 894 _select_24_bit_instr = selection; | |
| 895 _in_24_bit_fp_mode = mode; | |
| 896 } | |
| 897 | |
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898 void set_java_calls(int z) { _java_calls = z; } |
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899 void set_inner_loops(int z) { _inner_loops = z; } |
| 0 | 900 |
| 901 // Instruction bits passed off to the VM | |
| 902 int code_size() { return _method_size; } | |
| 903 CodeBuffer* code_buffer() { return &_code_buffer; } | |
| 904 int first_block_size() { return _first_block_size; } | |
| 905 void set_frame_complete(int off) { _code_offsets.set_value(CodeOffsets::Frame_Complete, off); } | |
| 906 ExceptionHandlerTable* handler_table() { return &_handler_table; } | |
| 907 ImplicitExceptionTable* inc_table() { return &_inc_table; } | |
| 908 OopMapSet* oop_map_set() { return _oop_map_set; } | |
| 909 DebugInformationRecorder* debug_info() { return env()->debug_info(); } | |
| 910 Dependencies* dependencies() { return env()->dependencies(); } | |
| 911 static int CompiledZap_count() { return _CompiledZap_count; } | |
| 912 BufferBlob* scratch_buffer_blob() { return _scratch_buffer_blob; } | |
| 2008 | 913 void init_scratch_buffer_blob(int const_size); |
| 914 void clear_scratch_buffer_blob(); | |
| 0 | 915 void set_scratch_buffer_blob(BufferBlob* b) { _scratch_buffer_blob = b; } |
| 916 relocInfo* scratch_locs_memory() { return _scratch_locs_memory; } | |
| 917 void set_scratch_locs_memory(relocInfo* b) { _scratch_locs_memory = b; } | |
| 918 | |
| 919 // emit to scratch blob, report resulting size | |
| 920 uint scratch_emit_size(const Node* n); | |
| 2008 | 921 void set_in_scratch_emit_size(bool x) { _in_scratch_emit_size = x; } |
| 922 bool in_scratch_emit_size() const { return _in_scratch_emit_size; } | |
| 0 | 923 |
| 924 enum ScratchBufferBlob { | |
| 925 MAX_inst_size = 1024, | |
| 926 MAX_locs_size = 128, // number of relocInfo elements | |
| 927 MAX_const_size = 128, | |
| 928 MAX_stubs_size = 128 | |
| 929 }; | |
| 930 | |
| 931 // Major entry point. Given a Scope, compile the associated method. | |
| 932 // For normal compilations, entry_bci is InvocationEntryBci. For on stack | |
| 933 // replacement, entry_bci indicates the bytecode for which to compile a | |
| 934 // continuation. | |
| 935 Compile(ciEnv* ci_env, C2Compiler* compiler, ciMethod* target, | |
| 10278 | 936 int entry_bci, bool subsume_loads, bool do_escape_analysis, |
| 937 bool eliminate_boxing); | |
| 0 | 938 |
| 939 // Second major entry point. From the TypeFunc signature, generate code | |
| 940 // to pass arguments from the Java calling convention to the C calling | |
| 941 // convention. | |
| 942 Compile(ciEnv* ci_env, const TypeFunc *(*gen)(), | |
| 943 address stub_function, const char *stub_name, | |
| 944 int is_fancy_jump, bool pass_tls, | |
| 945 bool save_arg_registers, bool return_pc); | |
| 946 | |
| 947 // From the TypeFunc signature, generate code to pass arguments | |
| 948 // from Compiled calling convention to Interpreter's calling convention | |
| 949 void Generate_Compiled_To_Interpreter_Graph(const TypeFunc *tf, address interpreter_entry); | |
| 950 | |
| 951 // From the TypeFunc signature, generate code to pass arguments | |
| 952 // from Interpreter's calling convention to Compiler's calling convention | |
| 953 void Generate_Interpreter_To_Compiled_Graph(const TypeFunc *tf); | |
| 954 | |
| 955 // Are we compiling a method? | |
| 956 bool has_method() { return method() != NULL; } | |
| 957 | |
| 958 // Maybe print some information about this compile. | |
| 959 void print_compile_messages(); | |
| 960 | |
| 961 // Final graph reshaping, a post-pass after the regular optimizer is done. | |
| 962 bool final_graph_reshaping(); | |
| 963 | |
| 964 // returns true if adr is completely contained in the given alias category | |
| 965 bool must_alias(const TypePtr* adr, int alias_idx); | |
| 966 | |
| 967 // returns true if adr overlaps with the given alias category | |
| 968 bool can_alias(const TypePtr* adr, int alias_idx); | |
| 969 | |
| 970 // Driver for converting compiler's IR into machine code bits | |
| 971 void Output(); | |
| 972 | |
| 973 // Accessors for node bundling info. | |
| 974 Bundle* node_bundling(const Node *n); | |
| 975 bool valid_bundle_info(const Node *n); | |
| 976 | |
| 977 // Schedule and Bundle the instructions | |
| 978 void ScheduleAndBundle(); | |
| 979 | |
| 980 // Build OopMaps for each GC point | |
| 981 void BuildOopMaps(); | |
|
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982 |
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983 // Append debug info for the node "local" at safepoint node "sfpt" to the |
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984 // "array", May also consult and add to "objs", which describes the |
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985 // scalar-replaced objects. |
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986 void FillLocArray( int idx, MachSafePointNode* sfpt, |
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987 Node *local, GrowableArray<ScopeValue*> *array, |
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988 GrowableArray<ScopeValue*> *objs ); |
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989 |
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990 // If "objs" contains an ObjectValue whose id is "id", returns it, else NULL. |
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991 static ObjectValue* sv_for_node_id(GrowableArray<ScopeValue*> *objs, int id); |
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992 // Requres that "objs" does not contains an ObjectValue whose id matches |
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993 // that of "sv. Appends "sv". |
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994 static void set_sv_for_object_node(GrowableArray<ScopeValue*> *objs, |
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995 ObjectValue* sv ); |
| 0 | 996 |
| 997 // Process an OopMap Element while emitting nodes | |
| 998 void Process_OopMap_Node(MachNode *mach, int code_offset); | |
| 999 | |
| 3851 | 1000 // Initialize code buffer |
| 1001 CodeBuffer* init_buffer(uint* blk_starts); | |
| 1002 | |
| 0 | 1003 // Write out basic block data to code buffer |
| 3851 | 1004 void fill_buffer(CodeBuffer* cb, uint* blk_starts); |
| 0 | 1005 |
| 1006 // Determine which variable sized branches can be shortened | |
| 3851 | 1007 void shorten_branches(uint* blk_starts, int& code_size, int& reloc_size, int& stub_size); |
| 1008 | |
| 0 | 1009 // Compute the size of first NumberOfLoopInstrToAlign instructions |
| 1010 // at the head of a loop. | |
| 1011 void compute_loop_first_inst_sizes(); | |
| 1012 | |
| 1013 // Compute the information for the exception tables | |
| 1014 void FillExceptionTables(uint cnt, uint *call_returns, uint *inct_starts, Label *blk_labels); | |
| 1015 | |
| 1016 // Stack slots that may be unused by the calling convention but must | |
| 1017 // otherwise be preserved. On Intel this includes the return address. | |
| 1018 // On PowerPC it includes the 4 words holding the old TOC & LR glue. | |
| 1019 uint in_preserve_stack_slots(); | |
| 1020 | |
| 1021 // "Top of Stack" slots that may be unused by the calling convention but must | |
| 1022 // otherwise be preserved. | |
| 1023 // On Intel these are not necessary and the value can be zero. | |
| 1024 // On Sparc this describes the words reserved for storing a register window | |
| 1025 // when an interrupt occurs. | |
| 1026 static uint out_preserve_stack_slots(); | |
| 1027 | |
| 1028 // Number of outgoing stack slots killed above the out_preserve_stack_slots | |
| 1029 // for calls to C. Supports the var-args backing area for register parms. | |
| 1030 uint varargs_C_out_slots_killed() const; | |
| 1031 | |
| 1032 // Number of Stack Slots consumed by a synchronization entry | |
| 1033 int sync_stack_slots() const; | |
| 1034 | |
| 1035 // Compute the name of old_SP. See <arch>.ad for frame layout. | |
| 1036 OptoReg::Name compute_old_SP(); | |
| 1037 | |
| 1038 #ifdef ENABLE_ZAP_DEAD_LOCALS | |
| 1039 static bool is_node_getting_a_safepoint(Node*); | |
| 1040 void Insert_zap_nodes(); | |
| 1041 Node* call_zap_node(MachSafePointNode* n, int block_no); | |
| 1042 #endif | |
| 1043 | |
| 1044 private: | |
| 1045 // Phase control: | |
| 1046 void Init(int aliaslevel); // Prepare for a single compilation | |
| 1047 int Inline_Warm(); // Find more inlining work. | |
| 1048 void Finish_Warm(); // Give up on further inlines. | |
| 1049 void Optimize(); // Given a graph, optimize it | |
| 1050 void Code_Gen(); // Generate code from a graph | |
| 1051 | |
| 1052 // Management of the AliasType table. | |
| 1053 void grow_alias_types(); | |
| 1054 AliasCacheEntry* probe_alias_cache(const TypePtr* adr_type); | |
| 1055 const TypePtr *flatten_alias_type(const TypePtr* adr_type) const; | |
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1056 AliasType* find_alias_type(const TypePtr* adr_type, bool no_create, ciField* field); |
| 0 | 1057 |
| 1058 void verify_top(Node*) const PRODUCT_RETURN; | |
| 1059 | |
| 1060 // Intrinsic setup. | |
| 1061 void register_library_intrinsics(); // initializer | |
| 1062 CallGenerator* make_vm_intrinsic(ciMethod* m, bool is_virtual); // constructor | |
| 1063 int intrinsic_insertion_index(ciMethod* m, bool is_virtual); // helper | |
| 1064 CallGenerator* find_intrinsic(ciMethod* m, bool is_virtual); // query fn | |
| 1065 void register_intrinsic(CallGenerator* cg); // update fn | |
| 1066 | |
| 1067 #ifndef PRODUCT | |
| 1068 static juint _intrinsic_hist_count[vmIntrinsics::ID_LIMIT]; | |
| 1069 static jubyte _intrinsic_hist_flags[vmIntrinsics::ID_LIMIT]; | |
| 1070 #endif | |
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1071 // Function calls made by the public function final_graph_reshaping. |
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1072 // No need to be made public as they are not called elsewhere. |
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1073 void final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc); |
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1074 void final_graph_reshaping_walk( Node_Stack &nstack, Node *root, Final_Reshape_Counts &frc ); |
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1075 void eliminate_redundant_card_marks(Node* n); |
| 0 | 1076 |
| 1077 public: | |
| 1078 | |
| 1079 // Note: Histogram array size is about 1 Kb. | |
| 1080 enum { // flag bits: | |
| 1081 _intrinsic_worked = 1, // succeeded at least once | |
| 1082 _intrinsic_failed = 2, // tried it but it failed | |
| 1083 _intrinsic_disabled = 4, // was requested but disabled (e.g., -XX:-InlineUnsafeOps) | |
| 1084 _intrinsic_virtual = 8, // was seen in the virtual form (rare) | |
| 1085 _intrinsic_both = 16 // was seen in the non-virtual form (usual) | |
| 1086 }; | |
| 1087 // Update histogram. Return boolean if this is a first-time occurrence. | |
| 1088 static bool gather_intrinsic_statistics(vmIntrinsics::ID id, | |
| 1089 bool is_virtual, int flags) PRODUCT_RETURN0; | |
| 1090 static void print_intrinsic_statistics() PRODUCT_RETURN; | |
| 1091 | |
| 1092 // Graph verification code | |
| 1093 // Walk the node list, verifying that there is a one-to-one | |
| 1094 // correspondence between Use-Def edges and Def-Use edges | |
| 1095 // The option no_dead_code enables stronger checks that the | |
| 1096 // graph is strongly connected from root in both directions. | |
| 1097 void verify_graph_edges(bool no_dead_code = false) PRODUCT_RETURN; | |
| 1098 | |
| 1099 // End-of-run dumps. | |
| 1100 static void print_statistics() PRODUCT_RETURN; | |
| 1101 | |
| 1102 // Dump formatted assembly | |
| 1103 void dump_asm(int *pcs = NULL, uint pc_limit = 0) PRODUCT_RETURN; | |
| 1104 void dump_pc(int *pcs, int pc_limit, Node *n); | |
| 1105 | |
| 1106 // Verify ADLC assumptions during startup | |
| 1107 static void adlc_verification() PRODUCT_RETURN; | |
| 1108 | |
| 1109 // Definitions of pd methods | |
| 1110 static void pd_compiler2_init(); | |
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1111 |
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1112 // Auxiliary method for randomized fuzzing/stressing |
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1113 static bool randomized_select(int count); |
| 0 | 1114 }; |
| 1972 | 1115 |
| 1116 #endif // SHARE_VM_OPTO_COMPILE_HPP |