Mercurial > hg > truffle
annotate src/share/vm/opto/type.cpp @ 14383:5ec7dace41a6
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
Summary: type methods shouldn't always operate on speculative part
Reviewed-by: kvn, twisti
| author | roland |
|---|---|
| date | Fri, 24 Jan 2014 09:31:53 +0100 |
| parents | e045e1876610 |
| children | 45467c53f178 085b304a1cc5 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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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 #include "precompiled.hpp" |
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26 #include "ci/ciMethodData.hpp" |
| 1972 | 27 #include "ci/ciTypeFlow.hpp" |
| 28 #include "classfile/symbolTable.hpp" | |
| 29 #include "classfile/systemDictionary.hpp" | |
| 30 #include "compiler/compileLog.hpp" | |
| 31 #include "libadt/dict.hpp" | |
| 32 #include "memory/gcLocker.hpp" | |
| 33 #include "memory/oopFactory.hpp" | |
| 34 #include "memory/resourceArea.hpp" | |
| 35 #include "oops/instanceKlass.hpp" | |
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36 #include "oops/instanceMirrorKlass.hpp" |
| 1972 | 37 #include "oops/objArrayKlass.hpp" |
| 38 #include "oops/typeArrayKlass.hpp" | |
| 39 #include "opto/matcher.hpp" | |
| 40 #include "opto/node.hpp" | |
| 41 #include "opto/opcodes.hpp" | |
| 42 #include "opto/type.hpp" | |
| 43 | |
| 0 | 44 // Portions of code courtesy of Clifford Click |
| 45 | |
| 46 // Optimization - Graph Style | |
| 47 | |
| 48 // Dictionary of types shared among compilations. | |
| 49 Dict* Type::_shared_type_dict = NULL; | |
| 50 | |
| 51 // Array which maps compiler types to Basic Types | |
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52 Type::TypeInfo Type::_type_info[Type::lastype] = { |
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53 { Bad, T_ILLEGAL, "bad", false, Node::NotAMachineReg, relocInfo::none }, // Bad |
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54 { Control, T_ILLEGAL, "control", false, 0, relocInfo::none }, // Control |
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55 { Bottom, T_VOID, "top", false, 0, relocInfo::none }, // Top |
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56 { Bad, T_INT, "int:", false, Op_RegI, relocInfo::none }, // Int |
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57 { Bad, T_LONG, "long:", false, Op_RegL, relocInfo::none }, // Long |
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58 { Half, T_VOID, "half", false, 0, relocInfo::none }, // Half |
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59 { Bad, T_NARROWOOP, "narrowoop:", false, Op_RegN, relocInfo::none }, // NarrowOop |
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60 { Bad, T_NARROWKLASS,"narrowklass:", false, Op_RegN, relocInfo::none }, // NarrowKlass |
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61 { Bad, T_ILLEGAL, "tuple:", false, Node::NotAMachineReg, relocInfo::none }, // Tuple |
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62 { Bad, T_ARRAY, "array:", false, Node::NotAMachineReg, relocInfo::none }, // Array |
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63 |
| 6890 | 64 #ifndef SPARC |
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65 { Bad, T_ILLEGAL, "vectors:", false, Op_VecS, relocInfo::none }, // VectorS |
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66 { Bad, T_ILLEGAL, "vectord:", false, Op_VecD, relocInfo::none }, // VectorD |
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67 { Bad, T_ILLEGAL, "vectorx:", false, Op_VecX, relocInfo::none }, // VectorX |
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68 { Bad, T_ILLEGAL, "vectory:", false, Op_VecY, relocInfo::none }, // VectorY |
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69 #else |
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70 { Bad, T_ILLEGAL, "vectors:", false, 0, relocInfo::none }, // VectorS |
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71 { Bad, T_ILLEGAL, "vectord:", false, Op_RegD, relocInfo::none }, // VectorD |
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72 { Bad, T_ILLEGAL, "vectorx:", false, 0, relocInfo::none }, // VectorX |
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73 { Bad, T_ILLEGAL, "vectory:", false, 0, relocInfo::none }, // VectorY |
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74 #endif // IA32 || AMD64 |
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75 { Bad, T_ADDRESS, "anyptr:", false, Op_RegP, relocInfo::none }, // AnyPtr |
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76 { Bad, T_ADDRESS, "rawptr:", false, Op_RegP, relocInfo::none }, // RawPtr |
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77 { Bad, T_OBJECT, "oop:", true, Op_RegP, relocInfo::oop_type }, // OopPtr |
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78 { Bad, T_OBJECT, "inst:", true, Op_RegP, relocInfo::oop_type }, // InstPtr |
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79 { Bad, T_OBJECT, "ary:", true, Op_RegP, relocInfo::oop_type }, // AryPtr |
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80 { Bad, T_METADATA, "metadata:", false, Op_RegP, relocInfo::metadata_type }, // MetadataPtr |
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81 { Bad, T_METADATA, "klass:", false, Op_RegP, relocInfo::metadata_type }, // KlassPtr |
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82 { Bad, T_OBJECT, "func", false, 0, relocInfo::none }, // Function |
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83 { Abio, T_ILLEGAL, "abIO", false, 0, relocInfo::none }, // Abio |
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84 { Return_Address, T_ADDRESS, "return_address",false, Op_RegP, relocInfo::none }, // Return_Address |
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85 { Memory, T_ILLEGAL, "memory", false, 0, relocInfo::none }, // Memory |
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86 { FloatBot, T_FLOAT, "float_top", false, Op_RegF, relocInfo::none }, // FloatTop |
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87 { FloatCon, T_FLOAT, "ftcon:", false, Op_RegF, relocInfo::none }, // FloatCon |
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88 { FloatTop, T_FLOAT, "float", false, Op_RegF, relocInfo::none }, // FloatBot |
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89 { DoubleBot, T_DOUBLE, "double_top", false, Op_RegD, relocInfo::none }, // DoubleTop |
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90 { DoubleCon, T_DOUBLE, "dblcon:", false, Op_RegD, relocInfo::none }, // DoubleCon |
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91 { DoubleTop, T_DOUBLE, "double", false, Op_RegD, relocInfo::none }, // DoubleBot |
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92 { Top, T_ILLEGAL, "bottom", false, 0, relocInfo::none } // Bottom |
| 0 | 93 }; |
| 94 | |
| 95 // Map ideal registers (machine types) to ideal types | |
| 96 const Type *Type::mreg2type[_last_machine_leaf]; | |
| 97 | |
| 98 // Map basic types to canonical Type* pointers. | |
| 99 const Type* Type:: _const_basic_type[T_CONFLICT+1]; | |
| 100 | |
| 101 // Map basic types to constant-zero Types. | |
| 102 const Type* Type:: _zero_type[T_CONFLICT+1]; | |
| 103 | |
| 104 // Map basic types to array-body alias types. | |
| 105 const TypeAryPtr* TypeAryPtr::_array_body_type[T_CONFLICT+1]; | |
| 106 | |
| 107 //============================================================================= | |
| 108 // Convenience common pre-built types. | |
| 109 const Type *Type::ABIO; // State-of-machine only | |
| 110 const Type *Type::BOTTOM; // All values | |
| 111 const Type *Type::CONTROL; // Control only | |
| 112 const Type *Type::DOUBLE; // All doubles | |
| 113 const Type *Type::FLOAT; // All floats | |
| 114 const Type *Type::HALF; // Placeholder half of doublewide type | |
| 115 const Type *Type::MEMORY; // Abstract store only | |
| 116 const Type *Type::RETURN_ADDRESS; | |
| 117 const Type *Type::TOP; // No values in set | |
| 118 | |
| 119 //------------------------------get_const_type--------------------------- | |
| 120 const Type* Type::get_const_type(ciType* type) { | |
| 121 if (type == NULL) { | |
| 122 return NULL; | |
| 123 } else if (type->is_primitive_type()) { | |
| 124 return get_const_basic_type(type->basic_type()); | |
| 125 } else { | |
| 126 return TypeOopPtr::make_from_klass(type->as_klass()); | |
| 127 } | |
| 128 } | |
| 129 | |
| 130 //---------------------------array_element_basic_type--------------------------------- | |
| 131 // Mapping to the array element's basic type. | |
| 132 BasicType Type::array_element_basic_type() const { | |
| 133 BasicType bt = basic_type(); | |
| 134 if (bt == T_INT) { | |
| 135 if (this == TypeInt::INT) return T_INT; | |
| 136 if (this == TypeInt::CHAR) return T_CHAR; | |
| 137 if (this == TypeInt::BYTE) return T_BYTE; | |
| 138 if (this == TypeInt::BOOL) return T_BOOLEAN; | |
| 139 if (this == TypeInt::SHORT) return T_SHORT; | |
| 140 return T_VOID; | |
| 141 } | |
| 142 return bt; | |
| 143 } | |
| 144 | |
| 145 //---------------------------get_typeflow_type--------------------------------- | |
| 146 // Import a type produced by ciTypeFlow. | |
| 147 const Type* Type::get_typeflow_type(ciType* type) { | |
| 148 switch (type->basic_type()) { | |
| 149 | |
| 150 case ciTypeFlow::StateVector::T_BOTTOM: | |
| 151 assert(type == ciTypeFlow::StateVector::bottom_type(), ""); | |
| 152 return Type::BOTTOM; | |
| 153 | |
| 154 case ciTypeFlow::StateVector::T_TOP: | |
| 155 assert(type == ciTypeFlow::StateVector::top_type(), ""); | |
| 156 return Type::TOP; | |
| 157 | |
| 158 case ciTypeFlow::StateVector::T_NULL: | |
| 159 assert(type == ciTypeFlow::StateVector::null_type(), ""); | |
| 160 return TypePtr::NULL_PTR; | |
| 161 | |
| 162 case ciTypeFlow::StateVector::T_LONG2: | |
| 163 // The ciTypeFlow pass pushes a long, then the half. | |
| 164 // We do the same. | |
| 165 assert(type == ciTypeFlow::StateVector::long2_type(), ""); | |
| 166 return TypeInt::TOP; | |
| 167 | |
| 168 case ciTypeFlow::StateVector::T_DOUBLE2: | |
| 169 // The ciTypeFlow pass pushes double, then the half. | |
| 170 // Our convention is the same. | |
| 171 assert(type == ciTypeFlow::StateVector::double2_type(), ""); | |
| 172 return Type::TOP; | |
| 173 | |
| 174 case T_ADDRESS: | |
| 175 assert(type->is_return_address(), ""); | |
| 176 return TypeRawPtr::make((address)(intptr_t)type->as_return_address()->bci()); | |
| 177 | |
| 178 default: | |
| 179 // make sure we did not mix up the cases: | |
| 180 assert(type != ciTypeFlow::StateVector::bottom_type(), ""); | |
| 181 assert(type != ciTypeFlow::StateVector::top_type(), ""); | |
| 182 assert(type != ciTypeFlow::StateVector::null_type(), ""); | |
| 183 assert(type != ciTypeFlow::StateVector::long2_type(), ""); | |
| 184 assert(type != ciTypeFlow::StateVector::double2_type(), ""); | |
| 185 assert(!type->is_return_address(), ""); | |
| 186 | |
| 187 return Type::get_const_type(type); | |
| 188 } | |
| 189 } | |
| 190 | |
| 191 | |
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192 //-----------------------make_from_constant------------------------------------ |
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193 const Type* Type::make_from_constant(ciConstant constant, |
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194 bool require_constant, bool is_autobox_cache) { |
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195 switch (constant.basic_type()) { |
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196 case T_BOOLEAN: return TypeInt::make(constant.as_boolean()); |
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197 case T_CHAR: return TypeInt::make(constant.as_char()); |
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198 case T_BYTE: return TypeInt::make(constant.as_byte()); |
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199 case T_SHORT: return TypeInt::make(constant.as_short()); |
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200 case T_INT: return TypeInt::make(constant.as_int()); |
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201 case T_LONG: return TypeLong::make(constant.as_long()); |
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202 case T_FLOAT: return TypeF::make(constant.as_float()); |
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203 case T_DOUBLE: return TypeD::make(constant.as_double()); |
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204 case T_ARRAY: |
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205 case T_OBJECT: |
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206 { |
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207 // cases: |
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208 // can_be_constant = (oop not scavengable || ScavengeRootsInCode != 0) |
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209 // should_be_constant = (oop not scavengable || ScavengeRootsInCode >= 2) |
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210 // An oop is not scavengable if it is in the perm gen. |
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211 ciObject* oop_constant = constant.as_object(); |
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212 if (oop_constant->is_null_object()) { |
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213 return Type::get_zero_type(T_OBJECT); |
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214 } else if (require_constant || oop_constant->should_be_constant()) { |
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215 return TypeOopPtr::make_from_constant(oop_constant, require_constant, is_autobox_cache); |
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216 } |
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217 } |
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218 } |
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219 // Fall through to failure |
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220 return NULL; |
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221 } |
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222 |
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223 |
| 0 | 224 //------------------------------make------------------------------------------- |
| 225 // Create a simple Type, with default empty symbol sets. Then hashcons it | |
| 226 // and look for an existing copy in the type dictionary. | |
| 227 const Type *Type::make( enum TYPES t ) { | |
| 228 return (new Type(t))->hashcons(); | |
| 229 } | |
| 223 | 230 |
| 0 | 231 //------------------------------cmp-------------------------------------------- |
| 232 int Type::cmp( const Type *const t1, const Type *const t2 ) { | |
| 233 if( t1->_base != t2->_base ) | |
| 234 return 1; // Missed badly | |
| 235 assert(t1 != t2 || t1->eq(t2), "eq must be reflexive"); | |
| 236 return !t1->eq(t2); // Return ZERO if equal | |
| 237 } | |
| 238 | |
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239 const Type* Type::maybe_remove_speculative(bool include_speculative) const { |
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240 if (!include_speculative) { |
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241 return remove_speculative(); |
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242 } |
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243 return this; |
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244 } |
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245 |
| 0 | 246 //------------------------------hash------------------------------------------- |
| 247 int Type::uhash( const Type *const t ) { | |
| 248 return t->hash(); | |
| 249 } | |
| 250 | |
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251 #define SMALLINT ((juint)3) // a value too insignificant to consider widening |
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252 |
| 0 | 253 //--------------------------Initialize_shared---------------------------------- |
| 254 void Type::Initialize_shared(Compile* current) { | |
| 255 // This method does not need to be locked because the first system | |
| 256 // compilations (stub compilations) occur serially. If they are | |
| 257 // changed to proceed in parallel, then this section will need | |
| 258 // locking. | |
| 259 | |
| 260 Arena* save = current->type_arena(); | |
| 6197 | 261 Arena* shared_type_arena = new (mtCompiler)Arena(); |
| 0 | 262 |
| 263 current->set_type_arena(shared_type_arena); | |
| 264 _shared_type_dict = | |
| 265 new (shared_type_arena) Dict( (CmpKey)Type::cmp, (Hash)Type::uhash, | |
| 266 shared_type_arena, 128 ); | |
| 267 current->set_type_dict(_shared_type_dict); | |
| 268 | |
| 269 // Make shared pre-built types. | |
| 270 CONTROL = make(Control); // Control only | |
| 271 TOP = make(Top); // No values in set | |
| 272 MEMORY = make(Memory); // Abstract store only | |
| 273 ABIO = make(Abio); // State-of-machine only | |
| 274 RETURN_ADDRESS=make(Return_Address); | |
| 275 FLOAT = make(FloatBot); // All floats | |
| 276 DOUBLE = make(DoubleBot); // All doubles | |
| 277 BOTTOM = make(Bottom); // Everything | |
| 278 HALF = make(Half); // Placeholder half of doublewide type | |
| 279 | |
| 280 TypeF::ZERO = TypeF::make(0.0); // Float 0 (positive zero) | |
| 281 TypeF::ONE = TypeF::make(1.0); // Float 1 | |
| 282 | |
| 283 TypeD::ZERO = TypeD::make(0.0); // Double 0 (positive zero) | |
| 284 TypeD::ONE = TypeD::make(1.0); // Double 1 | |
| 285 | |
| 286 TypeInt::MINUS_1 = TypeInt::make(-1); // -1 | |
| 287 TypeInt::ZERO = TypeInt::make( 0); // 0 | |
| 288 TypeInt::ONE = TypeInt::make( 1); // 1 | |
| 289 TypeInt::BOOL = TypeInt::make(0,1, WidenMin); // 0 or 1, FALSE or TRUE. | |
| 290 TypeInt::CC = TypeInt::make(-1, 1, WidenMin); // -1, 0 or 1, condition codes | |
| 291 TypeInt::CC_LT = TypeInt::make(-1,-1, WidenMin); // == TypeInt::MINUS_1 | |
| 292 TypeInt::CC_GT = TypeInt::make( 1, 1, WidenMin); // == TypeInt::ONE | |
| 293 TypeInt::CC_EQ = TypeInt::make( 0, 0, WidenMin); // == TypeInt::ZERO | |
| 294 TypeInt::CC_LE = TypeInt::make(-1, 0, WidenMin); | |
| 295 TypeInt::CC_GE = TypeInt::make( 0, 1, WidenMin); // == TypeInt::BOOL | |
| 296 TypeInt::BYTE = TypeInt::make(-128,127, WidenMin); // Bytes | |
| 624 | 297 TypeInt::UBYTE = TypeInt::make(0, 255, WidenMin); // Unsigned Bytes |
| 0 | 298 TypeInt::CHAR = TypeInt::make(0,65535, WidenMin); // Java chars |
| 299 TypeInt::SHORT = TypeInt::make(-32768,32767, WidenMin); // Java shorts | |
| 300 TypeInt::POS = TypeInt::make(0,max_jint, WidenMin); // Non-neg values | |
| 301 TypeInt::POS1 = TypeInt::make(1,max_jint, WidenMin); // Positive values | |
| 302 TypeInt::INT = TypeInt::make(min_jint,max_jint, WidenMax); // 32-bit integers | |
| 303 TypeInt::SYMINT = TypeInt::make(-max_jint,max_jint,WidenMin); // symmetric range | |
| 304 // CmpL is overloaded both as the bytecode computation returning | |
| 305 // a trinary (-1,0,+1) integer result AND as an efficient long | |
| 306 // compare returning optimizer ideal-type flags. | |
| 307 assert( TypeInt::CC_LT == TypeInt::MINUS_1, "types must match for CmpL to work" ); | |
| 308 assert( TypeInt::CC_GT == TypeInt::ONE, "types must match for CmpL to work" ); | |
| 309 assert( TypeInt::CC_EQ == TypeInt::ZERO, "types must match for CmpL to work" ); | |
| 310 assert( TypeInt::CC_GE == TypeInt::BOOL, "types must match for CmpL to work" ); | |
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311 assert( (juint)(TypeInt::CC->_hi - TypeInt::CC->_lo) <= SMALLINT, "CC is truly small"); |
| 0 | 312 |
| 313 TypeLong::MINUS_1 = TypeLong::make(-1); // -1 | |
| 314 TypeLong::ZERO = TypeLong::make( 0); // 0 | |
| 315 TypeLong::ONE = TypeLong::make( 1); // 1 | |
| 316 TypeLong::POS = TypeLong::make(0,max_jlong, WidenMin); // Non-neg values | |
| 317 TypeLong::LONG = TypeLong::make(min_jlong,max_jlong,WidenMax); // 64-bit integers | |
| 318 TypeLong::INT = TypeLong::make((jlong)min_jint,(jlong)max_jint,WidenMin); | |
| 319 TypeLong::UINT = TypeLong::make(0,(jlong)max_juint,WidenMin); | |
| 320 | |
| 321 const Type **fboth =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
| 322 fboth[0] = Type::CONTROL; | |
| 323 fboth[1] = Type::CONTROL; | |
| 324 TypeTuple::IFBOTH = TypeTuple::make( 2, fboth ); | |
| 325 | |
| 326 const Type **ffalse =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
| 327 ffalse[0] = Type::CONTROL; | |
| 328 ffalse[1] = Type::TOP; | |
| 329 TypeTuple::IFFALSE = TypeTuple::make( 2, ffalse ); | |
| 330 | |
| 331 const Type **fneither =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
| 332 fneither[0] = Type::TOP; | |
| 333 fneither[1] = Type::TOP; | |
| 334 TypeTuple::IFNEITHER = TypeTuple::make( 2, fneither ); | |
| 335 | |
| 336 const Type **ftrue =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
| 337 ftrue[0] = Type::TOP; | |
| 338 ftrue[1] = Type::CONTROL; | |
| 339 TypeTuple::IFTRUE = TypeTuple::make( 2, ftrue ); | |
| 340 | |
| 341 const Type **floop =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
| 342 floop[0] = Type::CONTROL; | |
| 343 floop[1] = TypeInt::INT; | |
| 344 TypeTuple::LOOPBODY = TypeTuple::make( 2, floop ); | |
| 345 | |
| 346 TypePtr::NULL_PTR= TypePtr::make( AnyPtr, TypePtr::Null, 0 ); | |
| 347 TypePtr::NOTNULL = TypePtr::make( AnyPtr, TypePtr::NotNull, OffsetBot ); | |
| 348 TypePtr::BOTTOM = TypePtr::make( AnyPtr, TypePtr::BotPTR, OffsetBot ); | |
| 349 | |
| 350 TypeRawPtr::BOTTOM = TypeRawPtr::make( TypePtr::BotPTR ); | |
| 351 TypeRawPtr::NOTNULL= TypeRawPtr::make( TypePtr::NotNull ); | |
| 352 | |
| 353 const Type **fmembar = TypeTuple::fields(0); | |
| 354 TypeTuple::MEMBAR = TypeTuple::make(TypeFunc::Parms+0, fmembar); | |
| 355 | |
| 356 const Type **fsc = (const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
| 357 fsc[0] = TypeInt::CC; | |
| 358 fsc[1] = Type::MEMORY; | |
| 359 TypeTuple::STORECONDITIONAL = TypeTuple::make(2, fsc); | |
| 360 | |
| 361 TypeInstPtr::NOTNULL = TypeInstPtr::make(TypePtr::NotNull, current->env()->Object_klass()); | |
| 362 TypeInstPtr::BOTTOM = TypeInstPtr::make(TypePtr::BotPTR, current->env()->Object_klass()); | |
| 363 TypeInstPtr::MIRROR = TypeInstPtr::make(TypePtr::NotNull, current->env()->Class_klass()); | |
| 364 TypeInstPtr::MARK = TypeInstPtr::make(TypePtr::BotPTR, current->env()->Object_klass(), | |
| 365 false, 0, oopDesc::mark_offset_in_bytes()); | |
| 366 TypeInstPtr::KLASS = TypeInstPtr::make(TypePtr::BotPTR, current->env()->Object_klass(), | |
| 367 false, 0, oopDesc::klass_offset_in_bytes()); | |
| 12966 | 368 TypeOopPtr::BOTTOM = TypeOopPtr::make(TypePtr::BotPTR, OffsetBot, TypeOopPtr::InstanceBot, NULL); |
| 0 | 369 |
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370 TypeMetadataPtr::BOTTOM = TypeMetadataPtr::make(TypePtr::BotPTR, NULL, OffsetBot); |
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371 |
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372 TypeNarrowOop::NULL_PTR = TypeNarrowOop::make( TypePtr::NULL_PTR ); |
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373 TypeNarrowOop::BOTTOM = TypeNarrowOop::make( TypeInstPtr::BOTTOM ); |
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374 |
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375 TypeNarrowKlass::NULL_PTR = TypeNarrowKlass::make( TypePtr::NULL_PTR ); |
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376 |
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377 mreg2type[Op_Node] = Type::BOTTOM; |
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378 mreg2type[Op_Set ] = 0; |
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379 mreg2type[Op_RegN] = TypeNarrowOop::BOTTOM; |
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380 mreg2type[Op_RegI] = TypeInt::INT; |
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381 mreg2type[Op_RegP] = TypePtr::BOTTOM; |
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382 mreg2type[Op_RegF] = Type::FLOAT; |
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383 mreg2type[Op_RegD] = Type::DOUBLE; |
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384 mreg2type[Op_RegL] = TypeLong::LONG; |
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385 mreg2type[Op_RegFlags] = TypeInt::CC; |
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386 |
| 1761 | 387 TypeAryPtr::RANGE = TypeAryPtr::make( TypePtr::BotPTR, TypeAry::make(Type::BOTTOM,TypeInt::POS), NULL /* current->env()->Object_klass() */, false, arrayOopDesc::length_offset_in_bytes()); |
| 163 | 388 |
| 389 TypeAryPtr::NARROWOOPS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeNarrowOop::BOTTOM, TypeInt::POS), NULL /*ciArrayKlass::make(o)*/, false, Type::OffsetBot); | |
| 390 | |
| 391 #ifdef _LP64 | |
| 392 if (UseCompressedOops) { | |
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393 assert(TypeAryPtr::NARROWOOPS->is_ptr_to_narrowoop(), "array of narrow oops must be ptr to narrow oop"); |
| 163 | 394 TypeAryPtr::OOPS = TypeAryPtr::NARROWOOPS; |
| 395 } else | |
| 396 #endif | |
| 397 { | |
| 398 // There is no shared klass for Object[]. See note in TypeAryPtr::klass(). | |
| 399 TypeAryPtr::OOPS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInstPtr::BOTTOM,TypeInt::POS), NULL /*ciArrayKlass::make(o)*/, false, Type::OffsetBot); | |
| 400 } | |
| 0 | 401 TypeAryPtr::BYTES = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInt::BYTE ,TypeInt::POS), ciTypeArrayKlass::make(T_BYTE), true, Type::OffsetBot); |
| 402 TypeAryPtr::SHORTS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInt::SHORT ,TypeInt::POS), ciTypeArrayKlass::make(T_SHORT), true, Type::OffsetBot); | |
| 403 TypeAryPtr::CHARS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInt::CHAR ,TypeInt::POS), ciTypeArrayKlass::make(T_CHAR), true, Type::OffsetBot); | |
| 404 TypeAryPtr::INTS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInt::INT ,TypeInt::POS), ciTypeArrayKlass::make(T_INT), true, Type::OffsetBot); | |
| 405 TypeAryPtr::LONGS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeLong::LONG ,TypeInt::POS), ciTypeArrayKlass::make(T_LONG), true, Type::OffsetBot); | |
| 406 TypeAryPtr::FLOATS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(Type::FLOAT ,TypeInt::POS), ciTypeArrayKlass::make(T_FLOAT), true, Type::OffsetBot); | |
| 407 TypeAryPtr::DOUBLES = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(Type::DOUBLE ,TypeInt::POS), ciTypeArrayKlass::make(T_DOUBLE), true, Type::OffsetBot); | |
| 408 | |
| 163 | 409 // Nobody should ask _array_body_type[T_NARROWOOP]. Use NULL as assert. |
| 410 TypeAryPtr::_array_body_type[T_NARROWOOP] = NULL; | |
| 0 | 411 TypeAryPtr::_array_body_type[T_OBJECT] = TypeAryPtr::OOPS; |
| 163 | 412 TypeAryPtr::_array_body_type[T_ARRAY] = TypeAryPtr::OOPS; // arrays are stored in oop arrays |
| 0 | 413 TypeAryPtr::_array_body_type[T_BYTE] = TypeAryPtr::BYTES; |
| 414 TypeAryPtr::_array_body_type[T_BOOLEAN] = TypeAryPtr::BYTES; // boolean[] is a byte array | |
| 415 TypeAryPtr::_array_body_type[T_SHORT] = TypeAryPtr::SHORTS; | |
| 416 TypeAryPtr::_array_body_type[T_CHAR] = TypeAryPtr::CHARS; | |
| 417 TypeAryPtr::_array_body_type[T_INT] = TypeAryPtr::INTS; | |
| 418 TypeAryPtr::_array_body_type[T_LONG] = TypeAryPtr::LONGS; | |
| 419 TypeAryPtr::_array_body_type[T_FLOAT] = TypeAryPtr::FLOATS; | |
| 420 TypeAryPtr::_array_body_type[T_DOUBLE] = TypeAryPtr::DOUBLES; | |
| 421 | |
| 422 TypeKlassPtr::OBJECT = TypeKlassPtr::make( TypePtr::NotNull, current->env()->Object_klass(), 0 ); | |
| 423 TypeKlassPtr::OBJECT_OR_NULL = TypeKlassPtr::make( TypePtr::BotPTR, current->env()->Object_klass(), 0 ); | |
| 424 | |
| 425 const Type **fi2c = TypeTuple::fields(2); | |
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426 fi2c[TypeFunc::Parms+0] = TypeInstPtr::BOTTOM; // Method* |
| 0 | 427 fi2c[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // argument pointer |
| 428 TypeTuple::START_I2C = TypeTuple::make(TypeFunc::Parms+2, fi2c); | |
| 429 | |
| 430 const Type **intpair = TypeTuple::fields(2); | |
| 431 intpair[0] = TypeInt::INT; | |
| 432 intpair[1] = TypeInt::INT; | |
| 433 TypeTuple::INT_PAIR = TypeTuple::make(2, intpair); | |
| 434 | |
| 435 const Type **longpair = TypeTuple::fields(2); | |
| 436 longpair[0] = TypeLong::LONG; | |
| 437 longpair[1] = TypeLong::LONG; | |
| 438 TypeTuple::LONG_PAIR = TypeTuple::make(2, longpair); | |
| 439 | |
| 12323 | 440 const Type **intccpair = TypeTuple::fields(2); |
| 441 intccpair[0] = TypeInt::INT; | |
| 442 intccpair[1] = TypeInt::CC; | |
| 443 TypeTuple::INT_CC_PAIR = TypeTuple::make(2, intccpair); | |
| 444 | |
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445 const Type **longccpair = TypeTuple::fields(2); |
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446 longccpair[0] = TypeLong::LONG; |
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447 longccpair[1] = TypeInt::CC; |
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448 TypeTuple::LONG_CC_PAIR = TypeTuple::make(2, longccpair); |
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449 |
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450 _const_basic_type[T_NARROWOOP] = TypeNarrowOop::BOTTOM; |
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451 _const_basic_type[T_NARROWKLASS] = Type::BOTTOM; |
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452 _const_basic_type[T_BOOLEAN] = TypeInt::BOOL; |
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453 _const_basic_type[T_CHAR] = TypeInt::CHAR; |
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454 _const_basic_type[T_BYTE] = TypeInt::BYTE; |
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455 _const_basic_type[T_SHORT] = TypeInt::SHORT; |
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456 _const_basic_type[T_INT] = TypeInt::INT; |
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457 _const_basic_type[T_LONG] = TypeLong::LONG; |
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458 _const_basic_type[T_FLOAT] = Type::FLOAT; |
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459 _const_basic_type[T_DOUBLE] = Type::DOUBLE; |
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460 _const_basic_type[T_OBJECT] = TypeInstPtr::BOTTOM; |
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461 _const_basic_type[T_ARRAY] = TypeInstPtr::BOTTOM; // there is no separate bottom for arrays |
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462 _const_basic_type[T_VOID] = TypePtr::NULL_PTR; // reflection represents void this way |
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463 _const_basic_type[T_ADDRESS] = TypeRawPtr::BOTTOM; // both interpreter return addresses & random raw ptrs |
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464 _const_basic_type[T_CONFLICT] = Type::BOTTOM; // why not? |
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465 |
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466 _zero_type[T_NARROWOOP] = TypeNarrowOop::NULL_PTR; |
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467 _zero_type[T_NARROWKLASS] = TypeNarrowKlass::NULL_PTR; |
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468 _zero_type[T_BOOLEAN] = TypeInt::ZERO; // false == 0 |
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469 _zero_type[T_CHAR] = TypeInt::ZERO; // '\0' == 0 |
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470 _zero_type[T_BYTE] = TypeInt::ZERO; // 0x00 == 0 |
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471 _zero_type[T_SHORT] = TypeInt::ZERO; // 0x0000 == 0 |
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472 _zero_type[T_INT] = TypeInt::ZERO; |
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473 _zero_type[T_LONG] = TypeLong::ZERO; |
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474 _zero_type[T_FLOAT] = TypeF::ZERO; |
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475 _zero_type[T_DOUBLE] = TypeD::ZERO; |
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476 _zero_type[T_OBJECT] = TypePtr::NULL_PTR; |
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477 _zero_type[T_ARRAY] = TypePtr::NULL_PTR; // null array is null oop |
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478 _zero_type[T_ADDRESS] = TypePtr::NULL_PTR; // raw pointers use the same null |
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479 _zero_type[T_VOID] = Type::TOP; // the only void value is no value at all |
| 0 | 480 |
| 481 // get_zero_type() should not happen for T_CONFLICT | |
| 482 _zero_type[T_CONFLICT]= NULL; | |
| 483 | |
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484 // Vector predefined types, it needs initialized _const_basic_type[]. |
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485 if (Matcher::vector_size_supported(T_BYTE,4)) { |
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486 TypeVect::VECTS = TypeVect::make(T_BYTE,4); |
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487 } |
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488 if (Matcher::vector_size_supported(T_FLOAT,2)) { |
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489 TypeVect::VECTD = TypeVect::make(T_FLOAT,2); |
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490 } |
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491 if (Matcher::vector_size_supported(T_FLOAT,4)) { |
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492 TypeVect::VECTX = TypeVect::make(T_FLOAT,4); |
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493 } |
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494 if (Matcher::vector_size_supported(T_FLOAT,8)) { |
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495 TypeVect::VECTY = TypeVect::make(T_FLOAT,8); |
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496 } |
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497 mreg2type[Op_VecS] = TypeVect::VECTS; |
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498 mreg2type[Op_VecD] = TypeVect::VECTD; |
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499 mreg2type[Op_VecX] = TypeVect::VECTX; |
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500 mreg2type[Op_VecY] = TypeVect::VECTY; |
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501 |
| 0 | 502 // Restore working type arena. |
| 503 current->set_type_arena(save); | |
| 504 current->set_type_dict(NULL); | |
| 505 } | |
| 506 | |
| 507 //------------------------------Initialize------------------------------------- | |
| 508 void Type::Initialize(Compile* current) { | |
| 509 assert(current->type_arena() != NULL, "must have created type arena"); | |
| 510 | |
| 511 if (_shared_type_dict == NULL) { | |
| 512 Initialize_shared(current); | |
| 513 } | |
| 514 | |
| 515 Arena* type_arena = current->type_arena(); | |
| 516 | |
| 517 // Create the hash-cons'ing dictionary with top-level storage allocation | |
| 518 Dict *tdic = new (type_arena) Dict( (CmpKey)Type::cmp,(Hash)Type::uhash, type_arena, 128 ); | |
| 519 current->set_type_dict(tdic); | |
| 520 | |
| 521 // Transfer the shared types. | |
| 522 DictI i(_shared_type_dict); | |
| 523 for( ; i.test(); ++i ) { | |
| 524 Type* t = (Type*)i._value; | |
| 525 tdic->Insert(t,t); // New Type, insert into Type table | |
| 526 } | |
| 527 } | |
| 528 | |
| 529 //------------------------------hashcons--------------------------------------- | |
| 530 // Do the hash-cons trick. If the Type already exists in the type table, | |
| 531 // delete the current Type and return the existing Type. Otherwise stick the | |
| 532 // current Type in the Type table. | |
| 533 const Type *Type::hashcons(void) { | |
| 534 debug_only(base()); // Check the assertion in Type::base(). | |
| 535 // Look up the Type in the Type dictionary | |
| 536 Dict *tdic = type_dict(); | |
| 537 Type* old = (Type*)(tdic->Insert(this, this, false)); | |
| 538 if( old ) { // Pre-existing Type? | |
| 539 if( old != this ) // Yes, this guy is not the pre-existing? | |
| 540 delete this; // Yes, Nuke this guy | |
| 541 assert( old->_dual, "" ); | |
| 542 return old; // Return pre-existing | |
| 543 } | |
| 544 | |
| 545 // Every type has a dual (to make my lattice symmetric). | |
| 546 // Since we just discovered a new Type, compute its dual right now. | |
| 547 assert( !_dual, "" ); // No dual yet | |
| 548 _dual = xdual(); // Compute the dual | |
| 549 if( cmp(this,_dual)==0 ) { // Handle self-symmetric | |
| 550 _dual = this; | |
| 551 return this; | |
| 552 } | |
| 553 assert( !_dual->_dual, "" ); // No reverse dual yet | |
| 554 assert( !(*tdic)[_dual], "" ); // Dual not in type system either | |
| 555 // New Type, insert into Type table | |
| 556 tdic->Insert((void*)_dual,(void*)_dual); | |
| 557 ((Type*)_dual)->_dual = this; // Finish up being symmetric | |
| 558 #ifdef ASSERT | |
| 559 Type *dual_dual = (Type*)_dual->xdual(); | |
| 560 assert( eq(dual_dual), "xdual(xdual()) should be identity" ); | |
| 561 delete dual_dual; | |
| 562 #endif | |
| 563 return this; // Return new Type | |
| 564 } | |
| 565 | |
| 566 //------------------------------eq--------------------------------------------- | |
| 567 // Structural equality check for Type representations | |
| 568 bool Type::eq( const Type * ) const { | |
| 569 return true; // Nothing else can go wrong | |
| 570 } | |
| 571 | |
| 572 //------------------------------hash------------------------------------------- | |
| 573 // Type-specific hashing function. | |
| 574 int Type::hash(void) const { | |
| 575 return _base; | |
| 576 } | |
| 577 | |
| 578 //------------------------------is_finite-------------------------------------- | |
| 579 // Has a finite value | |
| 580 bool Type::is_finite() const { | |
| 581 return false; | |
| 582 } | |
| 583 | |
| 584 //------------------------------is_nan----------------------------------------- | |
| 585 // Is not a number (NaN) | |
| 586 bool Type::is_nan() const { | |
| 587 return false; | |
| 588 } | |
| 589 | |
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590 //----------------------interface_vs_oop--------------------------------------- |
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591 #ifdef ASSERT |
| 12966 | 592 bool Type::interface_vs_oop_helper(const Type *t) const { |
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593 bool result = false; |
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594 |
| 992 | 595 const TypePtr* this_ptr = this->make_ptr(); // In case it is narrow_oop |
| 596 const TypePtr* t_ptr = t->make_ptr(); | |
| 597 if( this_ptr == NULL || t_ptr == NULL ) | |
| 598 return result; | |
| 599 | |
| 600 const TypeInstPtr* this_inst = this_ptr->isa_instptr(); | |
| 601 const TypeInstPtr* t_inst = t_ptr->isa_instptr(); | |
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602 if( this_inst && this_inst->is_loaded() && t_inst && t_inst->is_loaded() ) { |
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603 bool this_interface = this_inst->klass()->is_interface(); |
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604 bool t_interface = t_inst->klass()->is_interface(); |
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605 result = this_interface ^ t_interface; |
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606 } |
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607 |
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608 return result; |
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609 } |
| 12966 | 610 |
| 611 bool Type::interface_vs_oop(const Type *t) const { | |
| 612 if (interface_vs_oop_helper(t)) { | |
| 613 return true; | |
| 614 } | |
| 615 // Now check the speculative parts as well | |
| 616 const TypeOopPtr* this_spec = isa_oopptr() != NULL ? isa_oopptr()->speculative() : NULL; | |
| 617 const TypeOopPtr* t_spec = t->isa_oopptr() != NULL ? t->isa_oopptr()->speculative() : NULL; | |
| 618 if (this_spec != NULL && t_spec != NULL) { | |
| 619 if (this_spec->interface_vs_oop_helper(t_spec)) { | |
| 620 return true; | |
| 621 } | |
| 622 return false; | |
| 623 } | |
| 624 if (this_spec != NULL && this_spec->interface_vs_oop_helper(t)) { | |
| 625 return true; | |
| 626 } | |
| 627 if (t_spec != NULL && interface_vs_oop_helper(t_spec)) { | |
| 628 return true; | |
| 629 } | |
| 630 return false; | |
| 631 } | |
| 632 | |
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633 #endif |
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634 |
| 0 | 635 //------------------------------meet------------------------------------------- |
| 636 // Compute the MEET of two types. NOT virtual. It enforces that meet is | |
| 637 // commutative and the lattice is symmetric. | |
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638 const Type *Type::meet_helper(const Type *t, bool include_speculative) const { |
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639 if (isa_narrowoop() && t->isa_narrowoop()) { |
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640 const Type* result = make_ptr()->meet_helper(t->make_ptr(), include_speculative); |
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641 return result->make_narrowoop(); |
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642 } |
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643 if (isa_narrowklass() && t->isa_narrowklass()) { |
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644 const Type* result = make_ptr()->meet_helper(t->make_ptr(), include_speculative); |
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645 return result->make_narrowklass(); |
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646 } |
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647 |
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648 const Type *this_t = maybe_remove_speculative(include_speculative); |
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649 t = t->maybe_remove_speculative(include_speculative); |
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650 |
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651 const Type *mt = this_t->xmeet(t); |
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652 if (isa_narrowoop() || t->isa_narrowoop()) return mt; |
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653 if (isa_narrowklass() || t->isa_narrowklass()) return mt; |
| 0 | 654 #ifdef ASSERT |
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655 assert(mt == t->xmeet(this_t), "meet not commutative"); |
| 0 | 656 const Type* dual_join = mt->_dual; |
| 657 const Type *t2t = dual_join->xmeet(t->_dual); | |
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658 const Type *t2this = dual_join->xmeet(this_t->_dual); |
| 0 | 659 |
| 660 // Interface meet Oop is Not Symmetric: | |
| 661 // Interface:AnyNull meet Oop:AnyNull == Interface:AnyNull | |
| 662 // Interface:NotNull meet Oop:NotNull == java/lang/Object:NotNull | |
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663 |
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664 if( !interface_vs_oop(t) && (t2t != t->_dual || t2this != this_t->_dual) ) { |
| 0 | 665 tty->print_cr("=== Meet Not Symmetric ==="); |
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666 tty->print("t = "); t->dump(); tty->cr(); |
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667 tty->print("this= "); this_t->dump(); tty->cr(); |
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668 tty->print("mt=(t meet this)= "); mt->dump(); tty->cr(); |
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669 |
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670 tty->print("t_dual= "); t->_dual->dump(); tty->cr(); |
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671 tty->print("this_dual= "); this_t->_dual->dump(); tty->cr(); |
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672 tty->print("mt_dual= "); mt->_dual->dump(); tty->cr(); |
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673 |
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674 tty->print("mt_dual meet t_dual= "); t2t ->dump(); tty->cr(); |
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675 tty->print("mt_dual meet this_dual= "); t2this ->dump(); tty->cr(); |
| 0 | 676 |
| 677 fatal("meet not symmetric" ); | |
| 678 } | |
| 679 #endif | |
| 680 return mt; | |
| 681 } | |
| 682 | |
| 683 //------------------------------xmeet------------------------------------------ | |
| 684 // Compute the MEET of two types. It returns a new Type object. | |
| 685 const Type *Type::xmeet( const Type *t ) const { | |
| 686 // Perform a fast test for common case; meeting the same types together. | |
| 687 if( this == t ) return this; // Meeting same type-rep? | |
| 688 | |
| 689 // Meeting TOP with anything? | |
| 690 if( _base == Top ) return t; | |
| 691 | |
| 692 // Meeting BOTTOM with anything? | |
| 693 if( _base == Bottom ) return BOTTOM; | |
| 694 | |
| 695 // Current "this->_base" is one of: Bad, Multi, Control, Top, | |
| 696 // Abio, Abstore, Floatxxx, Doublexxx, Bottom, lastype. | |
| 697 switch (t->base()) { // Switch on original type | |
| 698 | |
| 699 // Cut in half the number of cases I must handle. Only need cases for when | |
| 700 // the given enum "t->type" is less than or equal to the local enum "type". | |
| 701 case FloatCon: | |
| 702 case DoubleCon: | |
| 703 case Int: | |
| 704 case Long: | |
| 705 return t->xmeet(this); | |
| 706 | |
| 707 case OopPtr: | |
| 708 return t->xmeet(this); | |
| 709 | |
| 710 case InstPtr: | |
| 711 return t->xmeet(this); | |
| 712 | |
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713 case MetadataPtr: |
| 0 | 714 case KlassPtr: |
| 715 return t->xmeet(this); | |
| 716 | |
| 717 case AryPtr: | |
| 718 return t->xmeet(this); | |
| 719 | |
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720 case NarrowOop: |
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721 return t->xmeet(this); |
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722 |
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723 case NarrowKlass: |
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724 return t->xmeet(this); |
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725 |
| 0 | 726 case Bad: // Type check |
| 727 default: // Bogus type not in lattice | |
| 728 typerr(t); | |
| 729 return Type::BOTTOM; | |
| 730 | |
| 731 case Bottom: // Ye Olde Default | |
| 732 return t; | |
| 733 | |
| 734 case FloatTop: | |
| 735 if( _base == FloatTop ) return this; | |
| 736 case FloatBot: // Float | |
| 737 if( _base == FloatBot || _base == FloatTop ) return FLOAT; | |
| 738 if( _base == DoubleTop || _base == DoubleBot ) return Type::BOTTOM; | |
| 739 typerr(t); | |
| 740 return Type::BOTTOM; | |
| 741 | |
| 742 case DoubleTop: | |
| 743 if( _base == DoubleTop ) return this; | |
| 744 case DoubleBot: // Double | |
| 745 if( _base == DoubleBot || _base == DoubleTop ) return DOUBLE; | |
| 746 if( _base == FloatTop || _base == FloatBot ) return Type::BOTTOM; | |
| 747 typerr(t); | |
| 748 return Type::BOTTOM; | |
| 749 | |
| 750 // These next few cases must match exactly or it is a compile-time error. | |
| 751 case Control: // Control of code | |
| 752 case Abio: // State of world outside of program | |
| 753 case Memory: | |
| 754 if( _base == t->_base ) return this; | |
| 755 typerr(t); | |
| 756 return Type::BOTTOM; | |
| 757 | |
| 758 case Top: // Top of the lattice | |
| 759 return this; | |
| 760 } | |
| 761 | |
| 762 // The type is unchanged | |
| 763 return this; | |
| 764 } | |
| 765 | |
| 766 //-----------------------------filter------------------------------------------ | |
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767 const Type *Type::filter_helper(const Type *kills, bool include_speculative) const { |
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768 const Type* ft = join_helper(kills, include_speculative); |
| 0 | 769 if (ft->empty()) |
| 770 return Type::TOP; // Canonical empty value | |
| 771 return ft; | |
| 772 } | |
| 773 | |
| 774 //------------------------------xdual------------------------------------------ | |
| 775 // Compute dual right now. | |
| 776 const Type::TYPES Type::dual_type[Type::lastype] = { | |
| 777 Bad, // Bad | |
| 778 Control, // Control | |
| 779 Bottom, // Top | |
| 780 Bad, // Int - handled in v-call | |
| 781 Bad, // Long - handled in v-call | |
| 782 Half, // Half | |
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783 Bad, // NarrowOop - handled in v-call |
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784 Bad, // NarrowKlass - handled in v-call |
| 0 | 785 |
| 786 Bad, // Tuple - handled in v-call | |
| 787 Bad, // Array - handled in v-call | |
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788 Bad, // VectorS - handled in v-call |
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789 Bad, // VectorD - handled in v-call |
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790 Bad, // VectorX - handled in v-call |
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791 Bad, // VectorY - handled in v-call |
| 0 | 792 |
| 793 Bad, // AnyPtr - handled in v-call | |
| 794 Bad, // RawPtr - handled in v-call | |
| 795 Bad, // OopPtr - handled in v-call | |
| 796 Bad, // InstPtr - handled in v-call | |
| 797 Bad, // AryPtr - handled in v-call | |
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798 |
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799 Bad, // MetadataPtr - handled in v-call |
| 0 | 800 Bad, // KlassPtr - handled in v-call |
| 801 | |
| 802 Bad, // Function - handled in v-call | |
| 803 Abio, // Abio | |
| 804 Return_Address,// Return_Address | |
| 805 Memory, // Memory | |
| 806 FloatBot, // FloatTop | |
| 807 FloatCon, // FloatCon | |
| 808 FloatTop, // FloatBot | |
| 809 DoubleBot, // DoubleTop | |
| 810 DoubleCon, // DoubleCon | |
| 811 DoubleTop, // DoubleBot | |
| 812 Top // Bottom | |
| 813 }; | |
| 814 | |
| 815 const Type *Type::xdual() const { | |
| 816 // Note: the base() accessor asserts the sanity of _base. | |
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817 assert(_type_info[base()].dual_type != Bad, "implement with v-call"); |
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818 return new Type(_type_info[_base].dual_type); |
| 0 | 819 } |
| 820 | |
| 821 //------------------------------has_memory------------------------------------- | |
| 822 bool Type::has_memory() const { | |
| 823 Type::TYPES tx = base(); | |
| 824 if (tx == Memory) return true; | |
| 825 if (tx == Tuple) { | |
| 826 const TypeTuple *t = is_tuple(); | |
| 827 for (uint i=0; i < t->cnt(); i++) { | |
| 828 tx = t->field_at(i)->base(); | |
| 829 if (tx == Memory) return true; | |
| 830 } | |
| 831 } | |
| 832 return false; | |
| 833 } | |
| 834 | |
| 835 #ifndef PRODUCT | |
| 836 //------------------------------dump2------------------------------------------ | |
| 837 void Type::dump2( Dict &d, uint depth, outputStream *st ) const { | |
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838 st->print(_type_info[_base].msg); |
| 0 | 839 } |
| 840 | |
| 841 //------------------------------dump------------------------------------------- | |
| 842 void Type::dump_on(outputStream *st) const { | |
| 843 ResourceMark rm; | |
| 844 Dict d(cmpkey,hashkey); // Stop recursive type dumping | |
| 845 dump2(d,1, st); | |
| 163 | 846 if (is_ptr_to_narrowoop()) { |
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847 st->print(" [narrow]"); |
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848 } else if (is_ptr_to_narrowklass()) { |
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849 st->print(" [narrowklass]"); |
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850 } |
| 0 | 851 } |
| 852 #endif | |
| 853 | |
| 854 //------------------------------singleton-------------------------------------- | |
| 855 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
| 856 // constants (Ldi nodes). Singletons are integer, float or double constants. | |
| 857 bool Type::singleton(void) const { | |
| 858 return _base == Top || _base == Half; | |
| 859 } | |
| 860 | |
| 861 //------------------------------empty------------------------------------------ | |
| 862 // TRUE if Type is a type with no values, FALSE otherwise. | |
| 863 bool Type::empty(void) const { | |
| 864 switch (_base) { | |
| 865 case DoubleTop: | |
| 866 case FloatTop: | |
| 867 case Top: | |
| 868 return true; | |
| 869 | |
| 870 case Half: | |
| 871 case Abio: | |
| 872 case Return_Address: | |
| 873 case Memory: | |
| 874 case Bottom: | |
| 875 case FloatBot: | |
| 876 case DoubleBot: | |
| 877 return false; // never a singleton, therefore never empty | |
| 878 } | |
| 879 | |
| 880 ShouldNotReachHere(); | |
| 881 return false; | |
| 882 } | |
| 883 | |
| 884 //------------------------------dump_stats------------------------------------- | |
| 885 // Dump collected statistics to stderr | |
| 886 #ifndef PRODUCT | |
| 887 void Type::dump_stats() { | |
| 888 tty->print("Types made: %d\n", type_dict()->Size()); | |
| 889 } | |
| 890 #endif | |
| 891 | |
| 892 //------------------------------typerr----------------------------------------- | |
| 893 void Type::typerr( const Type *t ) const { | |
| 894 #ifndef PRODUCT | |
| 895 tty->print("\nError mixing types: "); | |
| 896 dump(); | |
| 897 tty->print(" and "); | |
| 898 t->dump(); | |
| 899 tty->print("\n"); | |
| 900 #endif | |
| 901 ShouldNotReachHere(); | |
| 902 } | |
| 903 | |
| 904 | |
| 905 //============================================================================= | |
| 906 // Convenience common pre-built types. | |
| 907 const TypeF *TypeF::ZERO; // Floating point zero | |
| 908 const TypeF *TypeF::ONE; // Floating point one | |
| 909 | |
| 910 //------------------------------make------------------------------------------- | |
| 911 // Create a float constant | |
| 912 const TypeF *TypeF::make(float f) { | |
| 913 return (TypeF*)(new TypeF(f))->hashcons(); | |
| 914 } | |
| 915 | |
| 916 //------------------------------meet------------------------------------------- | |
| 917 // Compute the MEET of two types. It returns a new Type object. | |
| 918 const Type *TypeF::xmeet( const Type *t ) const { | |
| 919 // Perform a fast test for common case; meeting the same types together. | |
| 920 if( this == t ) return this; // Meeting same type-rep? | |
| 921 | |
| 922 // Current "this->_base" is FloatCon | |
| 923 switch (t->base()) { // Switch on original type | |
| 924 case AnyPtr: // Mixing with oops happens when javac | |
| 925 case RawPtr: // reuses local variables | |
| 926 case OopPtr: | |
| 927 case InstPtr: | |
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928 case AryPtr: |
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929 case MetadataPtr: |
| 0 | 930 case KlassPtr: |
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931 case NarrowOop: |
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932 case NarrowKlass: |
| 0 | 933 case Int: |
| 934 case Long: | |
| 935 case DoubleTop: | |
| 936 case DoubleCon: | |
| 937 case DoubleBot: | |
| 938 case Bottom: // Ye Olde Default | |
| 939 return Type::BOTTOM; | |
| 940 | |
| 941 case FloatBot: | |
| 942 return t; | |
| 943 | |
| 944 default: // All else is a mistake | |
| 945 typerr(t); | |
| 946 | |
| 947 case FloatCon: // Float-constant vs Float-constant? | |
| 948 if( jint_cast(_f) != jint_cast(t->getf()) ) // unequal constants? | |
| 949 // must compare bitwise as positive zero, negative zero and NaN have | |
| 950 // all the same representation in C++ | |
| 951 return FLOAT; // Return generic float | |
| 952 // Equal constants | |
| 953 case Top: | |
| 954 case FloatTop: | |
| 955 break; // Return the float constant | |
| 956 } | |
| 957 return this; // Return the float constant | |
| 958 } | |
| 959 | |
| 960 //------------------------------xdual------------------------------------------ | |
| 961 // Dual: symmetric | |
| 962 const Type *TypeF::xdual() const { | |
| 963 return this; | |
| 964 } | |
| 965 | |
| 966 //------------------------------eq--------------------------------------------- | |
| 967 // Structural equality check for Type representations | |
| 968 bool TypeF::eq( const Type *t ) const { | |
| 969 if( g_isnan(_f) || | |
| 970 g_isnan(t->getf()) ) { | |
| 971 // One or both are NANs. If both are NANs return true, else false. | |
| 972 return (g_isnan(_f) && g_isnan(t->getf())); | |
| 973 } | |
| 974 if (_f == t->getf()) { | |
| 975 // (NaN is impossible at this point, since it is not equal even to itself) | |
| 976 if (_f == 0.0) { | |
| 977 // difference between positive and negative zero | |
| 978 if (jint_cast(_f) != jint_cast(t->getf())) return false; | |
| 979 } | |
| 980 return true; | |
| 981 } | |
| 982 return false; | |
| 983 } | |
| 984 | |
| 985 //------------------------------hash------------------------------------------- | |
| 986 // Type-specific hashing function. | |
| 987 int TypeF::hash(void) const { | |
| 988 return *(int*)(&_f); | |
| 989 } | |
| 990 | |
| 991 //------------------------------is_finite-------------------------------------- | |
| 992 // Has a finite value | |
| 993 bool TypeF::is_finite() const { | |
| 994 return g_isfinite(getf()) != 0; | |
| 995 } | |
| 996 | |
| 997 //------------------------------is_nan----------------------------------------- | |
| 998 // Is not a number (NaN) | |
| 999 bool TypeF::is_nan() const { | |
| 1000 return g_isnan(getf()) != 0; | |
| 1001 } | |
| 1002 | |
| 1003 //------------------------------dump2------------------------------------------ | |
| 1004 // Dump float constant Type | |
| 1005 #ifndef PRODUCT | |
| 1006 void TypeF::dump2( Dict &d, uint depth, outputStream *st ) const { | |
| 1007 Type::dump2(d,depth, st); | |
| 1008 st->print("%f", _f); | |
| 1009 } | |
| 1010 #endif | |
| 1011 | |
| 1012 //------------------------------singleton-------------------------------------- | |
| 1013 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
| 1014 // constants (Ldi nodes). Singletons are integer, float or double constants | |
| 1015 // or a single symbol. | |
| 1016 bool TypeF::singleton(void) const { | |
| 1017 return true; // Always a singleton | |
| 1018 } | |
| 1019 | |
| 1020 bool TypeF::empty(void) const { | |
| 1021 return false; // always exactly a singleton | |
| 1022 } | |
| 1023 | |
| 1024 //============================================================================= | |
| 1025 // Convenience common pre-built types. | |
| 1026 const TypeD *TypeD::ZERO; // Floating point zero | |
| 1027 const TypeD *TypeD::ONE; // Floating point one | |
| 1028 | |
| 1029 //------------------------------make------------------------------------------- | |
| 1030 const TypeD *TypeD::make(double d) { | |
| 1031 return (TypeD*)(new TypeD(d))->hashcons(); | |
| 1032 } | |
| 1033 | |
| 1034 //------------------------------meet------------------------------------------- | |
| 1035 // Compute the MEET of two types. It returns a new Type object. | |
| 1036 const Type *TypeD::xmeet( const Type *t ) const { | |
| 1037 // Perform a fast test for common case; meeting the same types together. | |
| 1038 if( this == t ) return this; // Meeting same type-rep? | |
| 1039 | |
| 1040 // Current "this->_base" is DoubleCon | |
| 1041 switch (t->base()) { // Switch on original type | |
| 1042 case AnyPtr: // Mixing with oops happens when javac | |
| 1043 case RawPtr: // reuses local variables | |
| 1044 case OopPtr: | |
| 1045 case InstPtr: | |
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1046 case AryPtr: |
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1047 case MetadataPtr: |
| 0 | 1048 case KlassPtr: |
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1049 case NarrowOop: |
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1050 case NarrowKlass: |
| 0 | 1051 case Int: |
| 1052 case Long: | |
| 1053 case FloatTop: | |
| 1054 case FloatCon: | |
| 1055 case FloatBot: | |
| 1056 case Bottom: // Ye Olde Default | |
| 1057 return Type::BOTTOM; | |
| 1058 | |
| 1059 case DoubleBot: | |
| 1060 return t; | |
| 1061 | |
| 1062 default: // All else is a mistake | |
| 1063 typerr(t); | |
| 1064 | |
| 1065 case DoubleCon: // Double-constant vs Double-constant? | |
| 1066 if( jlong_cast(_d) != jlong_cast(t->getd()) ) // unequal constants? (see comment in TypeF::xmeet) | |
| 1067 return DOUBLE; // Return generic double | |
| 1068 case Top: | |
| 1069 case DoubleTop: | |
| 1070 break; | |
| 1071 } | |
| 1072 return this; // Return the double constant | |
| 1073 } | |
| 1074 | |
| 1075 //------------------------------xdual------------------------------------------ | |
| 1076 // Dual: symmetric | |
| 1077 const Type *TypeD::xdual() const { | |
| 1078 return this; | |
| 1079 } | |
| 1080 | |
| 1081 //------------------------------eq--------------------------------------------- | |
| 1082 // Structural equality check for Type representations | |
| 1083 bool TypeD::eq( const Type *t ) const { | |
| 1084 if( g_isnan(_d) || | |
| 1085 g_isnan(t->getd()) ) { | |
| 1086 // One or both are NANs. If both are NANs return true, else false. | |
| 1087 return (g_isnan(_d) && g_isnan(t->getd())); | |
| 1088 } | |
| 1089 if (_d == t->getd()) { | |
| 1090 // (NaN is impossible at this point, since it is not equal even to itself) | |
| 1091 if (_d == 0.0) { | |
| 1092 // difference between positive and negative zero | |
| 1093 if (jlong_cast(_d) != jlong_cast(t->getd())) return false; | |
| 1094 } | |
| 1095 return true; | |
| 1096 } | |
| 1097 return false; | |
| 1098 } | |
| 1099 | |
| 1100 //------------------------------hash------------------------------------------- | |
| 1101 // Type-specific hashing function. | |
| 1102 int TypeD::hash(void) const { | |
| 1103 return *(int*)(&_d); | |
| 1104 } | |
| 1105 | |
| 1106 //------------------------------is_finite-------------------------------------- | |
| 1107 // Has a finite value | |
| 1108 bool TypeD::is_finite() const { | |
| 1109 return g_isfinite(getd()) != 0; | |
| 1110 } | |
| 1111 | |
| 1112 //------------------------------is_nan----------------------------------------- | |
| 1113 // Is not a number (NaN) | |
| 1114 bool TypeD::is_nan() const { | |
| 1115 return g_isnan(getd()) != 0; | |
| 1116 } | |
| 1117 | |
| 1118 //------------------------------dump2------------------------------------------ | |
| 1119 // Dump double constant Type | |
| 1120 #ifndef PRODUCT | |
| 1121 void TypeD::dump2( Dict &d, uint depth, outputStream *st ) const { | |
| 1122 Type::dump2(d,depth,st); | |
| 1123 st->print("%f", _d); | |
| 1124 } | |
| 1125 #endif | |
| 1126 | |
| 1127 //------------------------------singleton-------------------------------------- | |
| 1128 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
| 1129 // constants (Ldi nodes). Singletons are integer, float or double constants | |
| 1130 // or a single symbol. | |
| 1131 bool TypeD::singleton(void) const { | |
| 1132 return true; // Always a singleton | |
| 1133 } | |
| 1134 | |
| 1135 bool TypeD::empty(void) const { | |
| 1136 return false; // always exactly a singleton | |
| 1137 } | |
| 1138 | |
| 1139 //============================================================================= | |
| 1140 // Convience common pre-built types. | |
| 1141 const TypeInt *TypeInt::MINUS_1;// -1 | |
| 1142 const TypeInt *TypeInt::ZERO; // 0 | |
| 1143 const TypeInt *TypeInt::ONE; // 1 | |
| 1144 const TypeInt *TypeInt::BOOL; // 0 or 1, FALSE or TRUE. | |
| 1145 const TypeInt *TypeInt::CC; // -1,0 or 1, condition codes | |
| 1146 const TypeInt *TypeInt::CC_LT; // [-1] == MINUS_1 | |
| 1147 const TypeInt *TypeInt::CC_GT; // [1] == ONE | |
| 1148 const TypeInt *TypeInt::CC_EQ; // [0] == ZERO | |
| 1149 const TypeInt *TypeInt::CC_LE; // [-1,0] | |
| 1150 const TypeInt *TypeInt::CC_GE; // [0,1] == BOOL (!) | |
| 1151 const TypeInt *TypeInt::BYTE; // Bytes, -128 to 127 | |
| 624 | 1152 const TypeInt *TypeInt::UBYTE; // Unsigned Bytes, 0 to 255 |
| 0 | 1153 const TypeInt *TypeInt::CHAR; // Java chars, 0-65535 |
| 1154 const TypeInt *TypeInt::SHORT; // Java shorts, -32768-32767 | |
| 1155 const TypeInt *TypeInt::POS; // Positive 32-bit integers or zero | |
| 1156 const TypeInt *TypeInt::POS1; // Positive 32-bit integers | |
| 1157 const TypeInt *TypeInt::INT; // 32-bit integers | |
| 1158 const TypeInt *TypeInt::SYMINT; // symmetric range [-max_jint..max_jint] | |
| 1159 | |
| 1160 //------------------------------TypeInt---------------------------------------- | |
| 1161 TypeInt::TypeInt( jint lo, jint hi, int w ) : Type(Int), _lo(lo), _hi(hi), _widen(w) { | |
| 1162 } | |
| 1163 | |
| 1164 //------------------------------make------------------------------------------- | |
| 1165 const TypeInt *TypeInt::make( jint lo ) { | |
| 1166 return (TypeInt*)(new TypeInt(lo,lo,WidenMin))->hashcons(); | |
| 1167 } | |
| 1168 | |
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1169 static int normalize_int_widen( jint lo, jint hi, int w ) { |
| 0 | 1170 // Certain normalizations keep us sane when comparing types. |
| 1171 // The 'SMALLINT' covers constants and also CC and its relatives. | |
| 1172 if (lo <= hi) { | |
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1173 if ((juint)(hi - lo) <= SMALLINT) w = Type::WidenMin; |
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1174 if ((juint)(hi - lo) >= max_juint) w = Type::WidenMax; // TypeInt::INT |
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1175 } else { |
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1176 if ((juint)(lo - hi) <= SMALLINT) w = Type::WidenMin; |
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1177 if ((juint)(lo - hi) >= max_juint) w = Type::WidenMin; // dual TypeInt::INT |
| 0 | 1178 } |
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1179 return w; |
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1180 } |
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1181 |
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1182 const TypeInt *TypeInt::make( jint lo, jint hi, int w ) { |
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1183 w = normalize_int_widen(lo, hi, w); |
| 0 | 1184 return (TypeInt*)(new TypeInt(lo,hi,w))->hashcons(); |
| 1185 } | |
| 1186 | |
| 1187 //------------------------------meet------------------------------------------- | |
| 1188 // Compute the MEET of two types. It returns a new Type representation object | |
| 1189 // with reference count equal to the number of Types pointing at it. | |
| 1190 // Caller should wrap a Types around it. | |
| 1191 const Type *TypeInt::xmeet( const Type *t ) const { | |
| 1192 // Perform a fast test for common case; meeting the same types together. | |
| 1193 if( this == t ) return this; // Meeting same type? | |
| 1194 | |
| 1195 // Currently "this->_base" is a TypeInt | |
| 1196 switch (t->base()) { // Switch on original type | |
| 1197 case AnyPtr: // Mixing with oops happens when javac | |
| 1198 case RawPtr: // reuses local variables | |
| 1199 case OopPtr: | |
| 1200 case InstPtr: | |
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1201 case AryPtr: |
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1202 case MetadataPtr: |
| 0 | 1203 case KlassPtr: |
|
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1204 case NarrowOop: |
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1205 case NarrowKlass: |
| 0 | 1206 case Long: |
| 1207 case FloatTop: | |
| 1208 case FloatCon: | |
| 1209 case FloatBot: | |
| 1210 case DoubleTop: | |
| 1211 case DoubleCon: | |
| 1212 case DoubleBot: | |
| 1213 case Bottom: // Ye Olde Default | |
| 1214 return Type::BOTTOM; | |
| 1215 default: // All else is a mistake | |
| 1216 typerr(t); | |
| 1217 case Top: // No change | |
| 1218 return this; | |
| 1219 case Int: // Int vs Int? | |
| 1220 break; | |
| 1221 } | |
| 1222 | |
| 1223 // Expand covered set | |
| 1224 const TypeInt *r = t->is_int(); | |
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1225 return make( MIN2(_lo,r->_lo), MAX2(_hi,r->_hi), MAX2(_widen,r->_widen) ); |
| 0 | 1226 } |
| 1227 | |
| 1228 //------------------------------xdual------------------------------------------ | |
| 1229 // Dual: reverse hi & lo; flip widen | |
| 1230 const Type *TypeInt::xdual() const { | |
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1231 int w = normalize_int_widen(_hi,_lo, WidenMax-_widen); |
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1232 return new TypeInt(_hi,_lo,w); |
| 0 | 1233 } |
| 1234 | |
| 1235 //------------------------------widen------------------------------------------ | |
| 1236 // Only happens for optimistic top-down optimizations. | |
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1237 const Type *TypeInt::widen( const Type *old, const Type* limit ) const { |
| 0 | 1238 // Coming from TOP or such; no widening |
| 1239 if( old->base() != Int ) return this; | |
| 1240 const TypeInt *ot = old->is_int(); | |
| 1241 | |
| 1242 // If new guy is equal to old guy, no widening | |
| 1243 if( _lo == ot->_lo && _hi == ot->_hi ) | |
| 1244 return old; | |
| 1245 | |
| 1246 // If new guy contains old, then we widened | |
| 1247 if( _lo <= ot->_lo && _hi >= ot->_hi ) { | |
| 1248 // New contains old | |
| 1249 // If new guy is already wider than old, no widening | |
| 1250 if( _widen > ot->_widen ) return this; | |
| 1251 // If old guy was a constant, do not bother | |
| 1252 if (ot->_lo == ot->_hi) return this; | |
| 1253 // Now widen new guy. | |
| 1254 // Check for widening too far | |
| 1255 if (_widen == WidenMax) { | |
|
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1256 int max = max_jint; |
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1257 int min = min_jint; |
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1258 if (limit->isa_int()) { |
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1259 max = limit->is_int()->_hi; |
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1260 min = limit->is_int()->_lo; |
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1261 } |
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1262 if (min < _lo && _hi < max) { |
| 0 | 1263 // If neither endpoint is extremal yet, push out the endpoint |
| 1264 // which is closer to its respective limit. | |
| 1265 if (_lo >= 0 || // easy common case | |
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1266 (juint)(_lo - min) >= (juint)(max - _hi)) { |
| 0 | 1267 // Try to widen to an unsigned range type of 31 bits: |
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1268 return make(_lo, max, WidenMax); |
| 0 | 1269 } else { |
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1270 return make(min, _hi, WidenMax); |
| 0 | 1271 } |
| 1272 } | |
| 1273 return TypeInt::INT; | |
| 1274 } | |
| 1275 // Returned widened new guy | |
| 1276 return make(_lo,_hi,_widen+1); | |
| 1277 } | |
| 1278 | |
| 1279 // If old guy contains new, then we probably widened too far & dropped to | |
| 1280 // bottom. Return the wider fellow. | |
| 1281 if ( ot->_lo <= _lo && ot->_hi >= _hi ) | |
| 1282 return old; | |
| 1283 | |
| 1284 //fatal("Integer value range is not subset"); | |
| 1285 //return this; | |
| 1286 return TypeInt::INT; | |
| 1287 } | |
| 1288 | |
| 1289 //------------------------------narrow--------------------------------------- | |
| 1290 // Only happens for pessimistic optimizations. | |
| 1291 const Type *TypeInt::narrow( const Type *old ) const { | |
| 1292 if (_lo >= _hi) return this; // already narrow enough | |
| 1293 if (old == NULL) return this; | |
| 1294 const TypeInt* ot = old->isa_int(); | |
| 1295 if (ot == NULL) return this; | |
| 1296 jint olo = ot->_lo; | |
| 1297 jint ohi = ot->_hi; | |
| 1298 | |
| 1299 // If new guy is equal to old guy, no narrowing | |
| 1300 if (_lo == olo && _hi == ohi) return old; | |
| 1301 | |
| 1302 // If old guy was maximum range, allow the narrowing | |
| 1303 if (olo == min_jint && ohi == max_jint) return this; | |
| 1304 | |
| 1305 if (_lo < olo || _hi > ohi) | |
| 1306 return this; // doesn't narrow; pretty wierd | |
| 1307 | |
| 1308 // The new type narrows the old type, so look for a "death march". | |
| 1309 // See comments on PhaseTransform::saturate. | |
| 1310 juint nrange = _hi - _lo; | |
| 1311 juint orange = ohi - olo; | |
| 1312 if (nrange < max_juint - 1 && nrange > (orange >> 1) + (SMALLINT*2)) { | |
| 1313 // Use the new type only if the range shrinks a lot. | |
| 1314 // We do not want the optimizer computing 2^31 point by point. | |
| 1315 return old; | |
| 1316 } | |
| 1317 | |
| 1318 return this; | |
| 1319 } | |
| 1320 | |
| 1321 //-----------------------------filter------------------------------------------ | |
|
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1322 const Type *TypeInt::filter_helper(const Type *kills, bool include_speculative) const { |
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1323 const TypeInt* ft = join_helper(kills, include_speculative)->isa_int(); |
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1324 if (ft == NULL || ft->empty()) |
| 0 | 1325 return Type::TOP; // Canonical empty value |
| 1326 if (ft->_widen < this->_widen) { | |
| 1327 // Do not allow the value of kill->_widen to affect the outcome. | |
| 1328 // The widen bits must be allowed to run freely through the graph. | |
| 1329 ft = TypeInt::make(ft->_lo, ft->_hi, this->_widen); | |
| 1330 } | |
| 1331 return ft; | |
| 1332 } | |
| 1333 | |
| 1334 //------------------------------eq--------------------------------------------- | |
| 1335 // Structural equality check for Type representations | |
| 1336 bool TypeInt::eq( const Type *t ) const { | |
| 1337 const TypeInt *r = t->is_int(); // Handy access | |
| 1338 return r->_lo == _lo && r->_hi == _hi && r->_widen == _widen; | |
| 1339 } | |
| 1340 | |
| 1341 //------------------------------hash------------------------------------------- | |
| 1342 // Type-specific hashing function. | |
| 1343 int TypeInt::hash(void) const { | |
| 1344 return _lo+_hi+_widen+(int)Type::Int; | |
| 1345 } | |
| 1346 | |
| 1347 //------------------------------is_finite-------------------------------------- | |
| 1348 // Has a finite value | |
| 1349 bool TypeInt::is_finite() const { | |
| 1350 return true; | |
| 1351 } | |
| 1352 | |
| 1353 //------------------------------dump2------------------------------------------ | |
| 1354 // Dump TypeInt | |
| 1355 #ifndef PRODUCT | |
| 1356 static const char* intname(char* buf, jint n) { | |
| 1357 if (n == min_jint) | |
| 1358 return "min"; | |
| 1359 else if (n < min_jint + 10000) | |
| 1360 sprintf(buf, "min+" INT32_FORMAT, n - min_jint); | |
| 1361 else if (n == max_jint) | |
| 1362 return "max"; | |
| 1363 else if (n > max_jint - 10000) | |
| 1364 sprintf(buf, "max-" INT32_FORMAT, max_jint - n); | |
| 1365 else | |
| 1366 sprintf(buf, INT32_FORMAT, n); | |
| 1367 return buf; | |
| 1368 } | |
| 1369 | |
| 1370 void TypeInt::dump2( Dict &d, uint depth, outputStream *st ) const { | |
| 1371 char buf[40], buf2[40]; | |
| 1372 if (_lo == min_jint && _hi == max_jint) | |
| 1373 st->print("int"); | |
| 1374 else if (is_con()) | |
| 1375 st->print("int:%s", intname(buf, get_con())); | |
| 1376 else if (_lo == BOOL->_lo && _hi == BOOL->_hi) | |
| 1377 st->print("bool"); | |
| 1378 else if (_lo == BYTE->_lo && _hi == BYTE->_hi) | |
| 1379 st->print("byte"); | |
| 1380 else if (_lo == CHAR->_lo && _hi == CHAR->_hi) | |
| 1381 st->print("char"); | |
| 1382 else if (_lo == SHORT->_lo && _hi == SHORT->_hi) | |
| 1383 st->print("short"); | |
| 1384 else if (_hi == max_jint) | |
| 1385 st->print("int:>=%s", intname(buf, _lo)); | |
| 1386 else if (_lo == min_jint) | |
| 1387 st->print("int:<=%s", intname(buf, _hi)); | |
| 1388 else | |
| 1389 st->print("int:%s..%s", intname(buf, _lo), intname(buf2, _hi)); | |
| 1390 | |
| 1391 if (_widen != 0 && this != TypeInt::INT) | |
| 1392 st->print(":%.*s", _widen, "wwww"); | |
| 1393 } | |
| 1394 #endif | |
| 1395 | |
| 1396 //------------------------------singleton-------------------------------------- | |
| 1397 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
| 1398 // constants. | |
| 1399 bool TypeInt::singleton(void) const { | |
| 1400 return _lo >= _hi; | |
| 1401 } | |
| 1402 | |
| 1403 bool TypeInt::empty(void) const { | |
| 1404 return _lo > _hi; | |
| 1405 } | |
| 1406 | |
| 1407 //============================================================================= | |
| 1408 // Convenience common pre-built types. | |
| 1409 const TypeLong *TypeLong::MINUS_1;// -1 | |
| 1410 const TypeLong *TypeLong::ZERO; // 0 | |
| 1411 const TypeLong *TypeLong::ONE; // 1 | |
| 1412 const TypeLong *TypeLong::POS; // >=0 | |
| 1413 const TypeLong *TypeLong::LONG; // 64-bit integers | |
| 1414 const TypeLong *TypeLong::INT; // 32-bit subrange | |
| 1415 const TypeLong *TypeLong::UINT; // 32-bit unsigned subrange | |
| 1416 | |
| 1417 //------------------------------TypeLong--------------------------------------- | |
| 1418 TypeLong::TypeLong( jlong lo, jlong hi, int w ) : Type(Long), _lo(lo), _hi(hi), _widen(w) { | |
| 1419 } | |
| 1420 | |
| 1421 //------------------------------make------------------------------------------- | |
| 1422 const TypeLong *TypeLong::make( jlong lo ) { | |
| 1423 return (TypeLong*)(new TypeLong(lo,lo,WidenMin))->hashcons(); | |
| 1424 } | |
| 1425 | |
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1426 static int normalize_long_widen( jlong lo, jlong hi, int w ) { |
| 0 | 1427 // Certain normalizations keep us sane when comparing types. |
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1428 // The 'SMALLINT' covers constants. |
| 0 | 1429 if (lo <= hi) { |
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1430 if ((julong)(hi - lo) <= SMALLINT) w = Type::WidenMin; |
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1431 if ((julong)(hi - lo) >= max_julong) w = Type::WidenMax; // TypeLong::LONG |
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1432 } else { |
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1433 if ((julong)(lo - hi) <= SMALLINT) w = Type::WidenMin; |
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1434 if ((julong)(lo - hi) >= max_julong) w = Type::WidenMin; // dual TypeLong::LONG |
| 0 | 1435 } |
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1436 return w; |
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1437 } |
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1438 |
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1439 const TypeLong *TypeLong::make( jlong lo, jlong hi, int w ) { |
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1440 w = normalize_long_widen(lo, hi, w); |
| 0 | 1441 return (TypeLong*)(new TypeLong(lo,hi,w))->hashcons(); |
| 1442 } | |
| 1443 | |
| 1444 | |
| 1445 //------------------------------meet------------------------------------------- | |
| 1446 // Compute the MEET of two types. It returns a new Type representation object | |
| 1447 // with reference count equal to the number of Types pointing at it. | |
| 1448 // Caller should wrap a Types around it. | |
| 1449 const Type *TypeLong::xmeet( const Type *t ) const { | |
| 1450 // Perform a fast test for common case; meeting the same types together. | |
| 1451 if( this == t ) return this; // Meeting same type? | |
| 1452 | |
| 1453 // Currently "this->_base" is a TypeLong | |
| 1454 switch (t->base()) { // Switch on original type | |
| 1455 case AnyPtr: // Mixing with oops happens when javac | |
| 1456 case RawPtr: // reuses local variables | |
| 1457 case OopPtr: | |
| 1458 case InstPtr: | |
|
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1459 case AryPtr: |
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1460 case MetadataPtr: |
| 0 | 1461 case KlassPtr: |
|
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1462 case NarrowOop: |
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1463 case NarrowKlass: |
| 0 | 1464 case Int: |
| 1465 case FloatTop: | |
| 1466 case FloatCon: | |
| 1467 case FloatBot: | |
| 1468 case DoubleTop: | |
| 1469 case DoubleCon: | |
| 1470 case DoubleBot: | |
| 1471 case Bottom: // Ye Olde Default | |
| 1472 return Type::BOTTOM; | |
| 1473 default: // All else is a mistake | |
| 1474 typerr(t); | |
| 1475 case Top: // No change | |
| 1476 return this; | |
| 1477 case Long: // Long vs Long? | |
| 1478 break; | |
| 1479 } | |
| 1480 | |
| 1481 // Expand covered set | |
| 1482 const TypeLong *r = t->is_long(); // Turn into a TypeLong | |
|
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1483 return make( MIN2(_lo,r->_lo), MAX2(_hi,r->_hi), MAX2(_widen,r->_widen) ); |
| 0 | 1484 } |
| 1485 | |
| 1486 //------------------------------xdual------------------------------------------ | |
| 1487 // Dual: reverse hi & lo; flip widen | |
| 1488 const Type *TypeLong::xdual() const { | |
|
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1489 int w = normalize_long_widen(_hi,_lo, WidenMax-_widen); |
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1490 return new TypeLong(_hi,_lo,w); |
| 0 | 1491 } |
| 1492 | |
| 1493 //------------------------------widen------------------------------------------ | |
| 1494 // Only happens for optimistic top-down optimizations. | |
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1495 const Type *TypeLong::widen( const Type *old, const Type* limit ) const { |
| 0 | 1496 // Coming from TOP or such; no widening |
| 1497 if( old->base() != Long ) return this; | |
| 1498 const TypeLong *ot = old->is_long(); | |
| 1499 | |
| 1500 // If new guy is equal to old guy, no widening | |
| 1501 if( _lo == ot->_lo && _hi == ot->_hi ) | |
| 1502 return old; | |
| 1503 | |
| 1504 // If new guy contains old, then we widened | |
| 1505 if( _lo <= ot->_lo && _hi >= ot->_hi ) { | |
| 1506 // New contains old | |
| 1507 // If new guy is already wider than old, no widening | |
| 1508 if( _widen > ot->_widen ) return this; | |
| 1509 // If old guy was a constant, do not bother | |
| 1510 if (ot->_lo == ot->_hi) return this; | |
| 1511 // Now widen new guy. | |
| 1512 // Check for widening too far | |
| 1513 if (_widen == WidenMax) { | |
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1514 jlong max = max_jlong; |
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1515 jlong min = min_jlong; |
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1516 if (limit->isa_long()) { |
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1517 max = limit->is_long()->_hi; |
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1518 min = limit->is_long()->_lo; |
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1519 } |
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1520 if (min < _lo && _hi < max) { |
| 0 | 1521 // If neither endpoint is extremal yet, push out the endpoint |
| 1522 // which is closer to its respective limit. | |
| 1523 if (_lo >= 0 || // easy common case | |
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1524 (julong)(_lo - min) >= (julong)(max - _hi)) { |
| 0 | 1525 // Try to widen to an unsigned range type of 32/63 bits: |
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1526 if (max >= max_juint && _hi < max_juint) |
| 0 | 1527 return make(_lo, max_juint, WidenMax); |
| 1528 else | |
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1529 return make(_lo, max, WidenMax); |
| 0 | 1530 } else { |
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1531 return make(min, _hi, WidenMax); |
| 0 | 1532 } |
| 1533 } | |
| 1534 return TypeLong::LONG; | |
| 1535 } | |
| 1536 // Returned widened new guy | |
| 1537 return make(_lo,_hi,_widen+1); | |
| 1538 } | |
| 1539 | |
| 1540 // If old guy contains new, then we probably widened too far & dropped to | |
| 1541 // bottom. Return the wider fellow. | |
| 1542 if ( ot->_lo <= _lo && ot->_hi >= _hi ) | |
| 1543 return old; | |
| 1544 | |
| 1545 // fatal("Long value range is not subset"); | |
| 1546 // return this; | |
| 1547 return TypeLong::LONG; | |
| 1548 } | |
| 1549 | |
| 1550 //------------------------------narrow---------------------------------------- | |
| 1551 // Only happens for pessimistic optimizations. | |
| 1552 const Type *TypeLong::narrow( const Type *old ) const { | |
| 1553 if (_lo >= _hi) return this; // already narrow enough | |
| 1554 if (old == NULL) return this; | |
| 1555 const TypeLong* ot = old->isa_long(); | |
| 1556 if (ot == NULL) return this; | |
| 1557 jlong olo = ot->_lo; | |
| 1558 jlong ohi = ot->_hi; | |
| 1559 | |
| 1560 // If new guy is equal to old guy, no narrowing | |
| 1561 if (_lo == olo && _hi == ohi) return old; | |
| 1562 | |
| 1563 // If old guy was maximum range, allow the narrowing | |
| 1564 if (olo == min_jlong && ohi == max_jlong) return this; | |
| 1565 | |
| 1566 if (_lo < olo || _hi > ohi) | |
| 1567 return this; // doesn't narrow; pretty wierd | |
| 1568 | |
| 1569 // The new type narrows the old type, so look for a "death march". | |
| 1570 // See comments on PhaseTransform::saturate. | |
| 1571 julong nrange = _hi - _lo; | |
| 1572 julong orange = ohi - olo; | |
| 1573 if (nrange < max_julong - 1 && nrange > (orange >> 1) + (SMALLINT*2)) { | |
| 1574 // Use the new type only if the range shrinks a lot. | |
| 1575 // We do not want the optimizer computing 2^31 point by point. | |
| 1576 return old; | |
| 1577 } | |
| 1578 | |
| 1579 return this; | |
| 1580 } | |
| 1581 | |
| 1582 //-----------------------------filter------------------------------------------ | |
|
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1583 const Type *TypeLong::filter_helper(const Type *kills, bool include_speculative) const { |
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1584 const TypeLong* ft = join_helper(kills, include_speculative)->isa_long(); |
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1585 if (ft == NULL || ft->empty()) |
| 0 | 1586 return Type::TOP; // Canonical empty value |
| 1587 if (ft->_widen < this->_widen) { | |
| 1588 // Do not allow the value of kill->_widen to affect the outcome. | |
| 1589 // The widen bits must be allowed to run freely through the graph. | |
| 1590 ft = TypeLong::make(ft->_lo, ft->_hi, this->_widen); | |
| 1591 } | |
| 1592 return ft; | |
| 1593 } | |
| 1594 | |
| 1595 //------------------------------eq--------------------------------------------- | |
| 1596 // Structural equality check for Type representations | |
| 1597 bool TypeLong::eq( const Type *t ) const { | |
| 1598 const TypeLong *r = t->is_long(); // Handy access | |
| 1599 return r->_lo == _lo && r->_hi == _hi && r->_widen == _widen; | |
| 1600 } | |
| 1601 | |
| 1602 //------------------------------hash------------------------------------------- | |
| 1603 // Type-specific hashing function. | |
| 1604 int TypeLong::hash(void) const { | |
| 1605 return (int)(_lo+_hi+_widen+(int)Type::Long); | |
| 1606 } | |
| 1607 | |
| 1608 //------------------------------is_finite-------------------------------------- | |
| 1609 // Has a finite value | |
| 1610 bool TypeLong::is_finite() const { | |
| 1611 return true; | |
| 1612 } | |
| 1613 | |
| 1614 //------------------------------dump2------------------------------------------ | |
| 1615 // Dump TypeLong | |
| 1616 #ifndef PRODUCT | |
| 1617 static const char* longnamenear(jlong x, const char* xname, char* buf, jlong n) { | |
| 1618 if (n > x) { | |
| 1619 if (n >= x + 10000) return NULL; | |
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1620 sprintf(buf, "%s+" JLONG_FORMAT, xname, n - x); |
| 0 | 1621 } else if (n < x) { |
| 1622 if (n <= x - 10000) return NULL; | |
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1623 sprintf(buf, "%s-" JLONG_FORMAT, xname, x - n); |
| 0 | 1624 } else { |
| 1625 return xname; | |
| 1626 } | |
| 1627 return buf; | |
| 1628 } | |
| 1629 | |
| 1630 static const char* longname(char* buf, jlong n) { | |
| 1631 const char* str; | |
| 1632 if (n == min_jlong) | |
| 1633 return "min"; | |
| 1634 else if (n < min_jlong + 10000) | |
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1635 sprintf(buf, "min+" JLONG_FORMAT, n - min_jlong); |
| 0 | 1636 else if (n == max_jlong) |
| 1637 return "max"; | |
| 1638 else if (n > max_jlong - 10000) | |
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1639 sprintf(buf, "max-" JLONG_FORMAT, max_jlong - n); |
| 0 | 1640 else if ((str = longnamenear(max_juint, "maxuint", buf, n)) != NULL) |
| 1641 return str; | |
| 1642 else if ((str = longnamenear(max_jint, "maxint", buf, n)) != NULL) | |
| 1643 return str; | |
| 1644 else if ((str = longnamenear(min_jint, "minint", buf, n)) != NULL) | |
| 1645 return str; | |
| 1646 else | |
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1647 sprintf(buf, JLONG_FORMAT, n); |
| 0 | 1648 return buf; |
| 1649 } | |
| 1650 | |
| 1651 void TypeLong::dump2( Dict &d, uint depth, outputStream *st ) const { | |
| 1652 char buf[80], buf2[80]; | |
| 1653 if (_lo == min_jlong && _hi == max_jlong) | |
| 1654 st->print("long"); | |
| 1655 else if (is_con()) | |
| 1656 st->print("long:%s", longname(buf, get_con())); | |
| 1657 else if (_hi == max_jlong) | |
| 1658 st->print("long:>=%s", longname(buf, _lo)); | |
| 1659 else if (_lo == min_jlong) | |
| 1660 st->print("long:<=%s", longname(buf, _hi)); | |
| 1661 else | |
| 1662 st->print("long:%s..%s", longname(buf, _lo), longname(buf2, _hi)); | |
| 1663 | |
| 1664 if (_widen != 0 && this != TypeLong::LONG) | |
| 1665 st->print(":%.*s", _widen, "wwww"); | |
| 1666 } | |
| 1667 #endif | |
| 1668 | |
| 1669 //------------------------------singleton-------------------------------------- | |
| 1670 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
| 1671 // constants | |
| 1672 bool TypeLong::singleton(void) const { | |
| 1673 return _lo >= _hi; | |
| 1674 } | |
| 1675 | |
| 1676 bool TypeLong::empty(void) const { | |
| 1677 return _lo > _hi; | |
| 1678 } | |
| 1679 | |
| 1680 //============================================================================= | |
| 1681 // Convenience common pre-built types. | |
| 1682 const TypeTuple *TypeTuple::IFBOTH; // Return both arms of IF as reachable | |
| 1683 const TypeTuple *TypeTuple::IFFALSE; | |
| 1684 const TypeTuple *TypeTuple::IFTRUE; | |
| 1685 const TypeTuple *TypeTuple::IFNEITHER; | |
| 1686 const TypeTuple *TypeTuple::LOOPBODY; | |
| 1687 const TypeTuple *TypeTuple::MEMBAR; | |
| 1688 const TypeTuple *TypeTuple::STORECONDITIONAL; | |
| 1689 const TypeTuple *TypeTuple::START_I2C; | |
| 1690 const TypeTuple *TypeTuple::INT_PAIR; | |
| 1691 const TypeTuple *TypeTuple::LONG_PAIR; | |
| 12323 | 1692 const TypeTuple *TypeTuple::INT_CC_PAIR; |
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1693 const TypeTuple *TypeTuple::LONG_CC_PAIR; |
| 0 | 1694 |
| 1695 | |
| 1696 //------------------------------make------------------------------------------- | |
| 1697 // Make a TypeTuple from the range of a method signature | |
| 1698 const TypeTuple *TypeTuple::make_range(ciSignature* sig) { | |
| 1699 ciType* return_type = sig->return_type(); | |
| 1700 uint total_fields = TypeFunc::Parms + return_type->size(); | |
| 1701 const Type **field_array = fields(total_fields); | |
| 1702 switch (return_type->basic_type()) { | |
| 1703 case T_LONG: | |
| 1704 field_array[TypeFunc::Parms] = TypeLong::LONG; | |
| 1705 field_array[TypeFunc::Parms+1] = Type::HALF; | |
| 1706 break; | |
| 1707 case T_DOUBLE: | |
| 1708 field_array[TypeFunc::Parms] = Type::DOUBLE; | |
| 1709 field_array[TypeFunc::Parms+1] = Type::HALF; | |
| 1710 break; | |
| 1711 case T_OBJECT: | |
| 1712 case T_ARRAY: | |
| 1713 case T_BOOLEAN: | |
| 1714 case T_CHAR: | |
| 1715 case T_FLOAT: | |
| 1716 case T_BYTE: | |
| 1717 case T_SHORT: | |
| 1718 case T_INT: | |
| 1719 field_array[TypeFunc::Parms] = get_const_type(return_type); | |
| 1720 break; | |
| 1721 case T_VOID: | |
| 1722 break; | |
| 1723 default: | |
| 1724 ShouldNotReachHere(); | |
| 1725 } | |
| 1726 return (TypeTuple*)(new TypeTuple(total_fields,field_array))->hashcons(); | |
| 1727 } | |
| 1728 | |
| 1729 // Make a TypeTuple from the domain of a method signature | |
| 1730 const TypeTuple *TypeTuple::make_domain(ciInstanceKlass* recv, ciSignature* sig) { | |
| 1731 uint total_fields = TypeFunc::Parms + sig->size(); | |
| 1732 | |
| 1733 uint pos = TypeFunc::Parms; | |
| 1734 const Type **field_array; | |
| 1735 if (recv != NULL) { | |
| 1736 total_fields++; | |
| 1737 field_array = fields(total_fields); | |
| 1738 // Use get_const_type here because it respects UseUniqueSubclasses: | |
|
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1739 field_array[pos++] = get_const_type(recv)->join_speculative(TypePtr::NOTNULL); |
| 0 | 1740 } else { |
| 1741 field_array = fields(total_fields); | |
| 1742 } | |
| 1743 | |
| 1744 int i = 0; | |
| 1745 while (pos < total_fields) { | |
| 1746 ciType* type = sig->type_at(i); | |
| 1747 | |
| 1748 switch (type->basic_type()) { | |
| 1749 case T_LONG: | |
| 1750 field_array[pos++] = TypeLong::LONG; | |
| 1751 field_array[pos++] = Type::HALF; | |
| 1752 break; | |
| 1753 case T_DOUBLE: | |
| 1754 field_array[pos++] = Type::DOUBLE; | |
| 1755 field_array[pos++] = Type::HALF; | |
| 1756 break; | |
| 1757 case T_OBJECT: | |
| 1758 case T_ARRAY: | |
| 1759 case T_BOOLEAN: | |
| 1760 case T_CHAR: | |
| 1761 case T_FLOAT: | |
| 1762 case T_BYTE: | |
| 1763 case T_SHORT: | |
| 1764 case T_INT: | |
| 1765 field_array[pos++] = get_const_type(type); | |
| 1766 break; | |
| 1767 default: | |
| 1768 ShouldNotReachHere(); | |
| 1769 } | |
| 1770 i++; | |
| 1771 } | |
| 1772 return (TypeTuple*)(new TypeTuple(total_fields,field_array))->hashcons(); | |
| 1773 } | |
| 1774 | |
| 1775 const TypeTuple *TypeTuple::make( uint cnt, const Type **fields ) { | |
| 1776 return (TypeTuple*)(new TypeTuple(cnt,fields))->hashcons(); | |
| 1777 } | |
| 1778 | |
| 1779 //------------------------------fields----------------------------------------- | |
| 1780 // Subroutine call type with space allocated for argument types | |
| 1781 const Type **TypeTuple::fields( uint arg_cnt ) { | |
| 1782 const Type **flds = (const Type **)(Compile::current()->type_arena()->Amalloc_4((TypeFunc::Parms+arg_cnt)*sizeof(Type*) )); | |
| 1783 flds[TypeFunc::Control ] = Type::CONTROL; | |
| 1784 flds[TypeFunc::I_O ] = Type::ABIO; | |
| 1785 flds[TypeFunc::Memory ] = Type::MEMORY; | |
| 1786 flds[TypeFunc::FramePtr ] = TypeRawPtr::BOTTOM; | |
| 1787 flds[TypeFunc::ReturnAdr] = Type::RETURN_ADDRESS; | |
| 1788 | |
| 1789 return flds; | |
| 1790 } | |
| 1791 | |
| 1792 //------------------------------meet------------------------------------------- | |
| 1793 // Compute the MEET of two types. It returns a new Type object. | |
| 1794 const Type *TypeTuple::xmeet( const Type *t ) const { | |
| 1795 // Perform a fast test for common case; meeting the same types together. | |
| 1796 if( this == t ) return this; // Meeting same type-rep? | |
| 1797 | |
| 1798 // Current "this->_base" is Tuple | |
| 1799 switch (t->base()) { // switch on original type | |
| 1800 | |
| 1801 case Bottom: // Ye Olde Default | |
| 1802 return t; | |
| 1803 | |
| 1804 default: // All else is a mistake | |
| 1805 typerr(t); | |
| 1806 | |
| 1807 case Tuple: { // Meeting 2 signatures? | |
| 1808 const TypeTuple *x = t->is_tuple(); | |
| 1809 assert( _cnt == x->_cnt, "" ); | |
| 1810 const Type **fields = (const Type **)(Compile::current()->type_arena()->Amalloc_4( _cnt*sizeof(Type*) )); | |
| 1811 for( uint i=0; i<_cnt; i++ ) | |
| 1812 fields[i] = field_at(i)->xmeet( x->field_at(i) ); | |
| 1813 return TypeTuple::make(_cnt,fields); | |
| 1814 } | |
| 1815 case Top: | |
| 1816 break; | |
| 1817 } | |
| 1818 return this; // Return the double constant | |
| 1819 } | |
| 1820 | |
| 1821 //------------------------------xdual------------------------------------------ | |
| 1822 // Dual: compute field-by-field dual | |
| 1823 const Type *TypeTuple::xdual() const { | |
| 1824 const Type **fields = (const Type **)(Compile::current()->type_arena()->Amalloc_4( _cnt*sizeof(Type*) )); | |
| 1825 for( uint i=0; i<_cnt; i++ ) | |
| 1826 fields[i] = _fields[i]->dual(); | |
| 1827 return new TypeTuple(_cnt,fields); | |
| 1828 } | |
| 1829 | |
| 1830 //------------------------------eq--------------------------------------------- | |
| 1831 // Structural equality check for Type representations | |
| 1832 bool TypeTuple::eq( const Type *t ) const { | |
| 1833 const TypeTuple *s = (const TypeTuple *)t; | |
| 1834 if (_cnt != s->_cnt) return false; // Unequal field counts | |
| 1835 for (uint i = 0; i < _cnt; i++) | |
| 1836 if (field_at(i) != s->field_at(i)) // POINTER COMPARE! NO RECURSION! | |
| 1837 return false; // Missed | |
| 1838 return true; | |
| 1839 } | |
| 1840 | |
| 1841 //------------------------------hash------------------------------------------- | |
| 1842 // Type-specific hashing function. | |
| 1843 int TypeTuple::hash(void) const { | |
| 1844 intptr_t sum = _cnt; | |
| 1845 for( uint i=0; i<_cnt; i++ ) | |
| 1846 sum += (intptr_t)_fields[i]; // Hash on pointers directly | |
| 1847 return sum; | |
| 1848 } | |
| 1849 | |
| 1850 //------------------------------dump2------------------------------------------ | |
| 1851 // Dump signature Type | |
| 1852 #ifndef PRODUCT | |
| 1853 void TypeTuple::dump2( Dict &d, uint depth, outputStream *st ) const { | |
| 1854 st->print("{"); | |
| 1855 if( !depth || d[this] ) { // Check for recursive print | |
| 1856 st->print("...}"); | |
| 1857 return; | |
| 1858 } | |
| 1859 d.Insert((void*)this, (void*)this); // Stop recursion | |
| 1860 if( _cnt ) { | |
| 1861 uint i; | |
| 1862 for( i=0; i<_cnt-1; i++ ) { | |
| 1863 st->print("%d:", i); | |
| 1864 _fields[i]->dump2(d, depth-1, st); | |
| 1865 st->print(", "); | |
| 1866 } | |
| 1867 st->print("%d:", i); | |
| 1868 _fields[i]->dump2(d, depth-1, st); | |
| 1869 } | |
| 1870 st->print("}"); | |
| 1871 } | |
| 1872 #endif | |
| 1873 | |
| 1874 //------------------------------singleton-------------------------------------- | |
| 1875 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
| 1876 // constants (Ldi nodes). Singletons are integer, float or double constants | |
| 1877 // or a single symbol. | |
| 1878 bool TypeTuple::singleton(void) const { | |
| 1879 return false; // Never a singleton | |
| 1880 } | |
| 1881 | |
| 1882 bool TypeTuple::empty(void) const { | |
| 1883 for( uint i=0; i<_cnt; i++ ) { | |
| 1884 if (_fields[i]->empty()) return true; | |
| 1885 } | |
| 1886 return false; | |
| 1887 } | |
| 1888 | |
| 1889 //============================================================================= | |
| 1890 // Convenience common pre-built types. | |
| 1891 | |
| 1892 inline const TypeInt* normalize_array_size(const TypeInt* size) { | |
| 1893 // Certain normalizations keep us sane when comparing types. | |
| 1894 // We do not want arrayOop variables to differ only by the wideness | |
| 1895 // of their index types. Pick minimum wideness, since that is the | |
| 1896 // forced wideness of small ranges anyway. | |
| 1897 if (size->_widen != Type::WidenMin) | |
| 1898 return TypeInt::make(size->_lo, size->_hi, Type::WidenMin); | |
| 1899 else | |
| 1900 return size; | |
| 1901 } | |
| 1902 | |
| 1903 //------------------------------make------------------------------------------- | |
|
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1904 const TypeAry* TypeAry::make(const Type* elem, const TypeInt* size, bool stable) { |
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1905 if (UseCompressedOops && elem->isa_oopptr()) { |
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1906 elem = elem->make_narrowoop(); |
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1907 } |
| 0 | 1908 size = normalize_array_size(size); |
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1909 return (TypeAry*)(new TypeAry(elem,size,stable))->hashcons(); |
| 0 | 1910 } |
| 1911 | |
| 1912 //------------------------------meet------------------------------------------- | |
| 1913 // Compute the MEET of two types. It returns a new Type object. | |
| 1914 const Type *TypeAry::xmeet( const Type *t ) const { | |
| 1915 // Perform a fast test for common case; meeting the same types together. | |
| 1916 if( this == t ) return this; // Meeting same type-rep? | |
| 1917 | |
| 1918 // Current "this->_base" is Ary | |
| 1919 switch (t->base()) { // switch on original type | |
| 1920 | |
| 1921 case Bottom: // Ye Olde Default | |
| 1922 return t; | |
| 1923 | |
| 1924 default: // All else is a mistake | |
| 1925 typerr(t); | |
| 1926 | |
| 1927 case Array: { // Meeting 2 arrays? | |
| 1928 const TypeAry *a = t->is_ary(); | |
|
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1929 return TypeAry::make(_elem->meet_speculative(a->_elem), |
|
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1930 _size->xmeet(a->_size)->is_int(), |
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1931 _stable & a->_stable); |
| 0 | 1932 } |
| 1933 case Top: | |
| 1934 break; | |
| 1935 } | |
| 1936 return this; // Return the double constant | |
| 1937 } | |
| 1938 | |
| 1939 //------------------------------xdual------------------------------------------ | |
| 1940 // Dual: compute field-by-field dual | |
| 1941 const Type *TypeAry::xdual() const { | |
| 1942 const TypeInt* size_dual = _size->dual()->is_int(); | |
| 1943 size_dual = normalize_array_size(size_dual); | |
|
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1944 return new TypeAry(_elem->dual(), size_dual, !_stable); |
| 0 | 1945 } |
| 1946 | |
| 1947 //------------------------------eq--------------------------------------------- | |
| 1948 // Structural equality check for Type representations | |
| 1949 bool TypeAry::eq( const Type *t ) const { | |
| 1950 const TypeAry *a = (const TypeAry*)t; | |
| 1951 return _elem == a->_elem && | |
|
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1952 _stable == a->_stable && |
| 0 | 1953 _size == a->_size; |
| 1954 } | |
| 1955 | |
| 1956 //------------------------------hash------------------------------------------- | |
| 1957 // Type-specific hashing function. | |
| 1958 int TypeAry::hash(void) const { | |
|
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1959 return (intptr_t)_elem + (intptr_t)_size + (_stable ? 43 : 0); |
| 0 | 1960 } |
| 1961 | |
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1962 /** |
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1963 * Return same type without a speculative part in the element |
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1964 */ |
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1965 const Type* TypeAry::remove_speculative() const { |
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1966 return make(_elem->remove_speculative(), _size, _stable); |
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1967 } |
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1968 |
|
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1969 //----------------------interface_vs_oop--------------------------------------- |
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1970 #ifdef ASSERT |
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1971 bool TypeAry::interface_vs_oop(const Type *t) const { |
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1972 const TypeAry* t_ary = t->is_ary(); |
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1973 if (t_ary) { |
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1974 return _elem->interface_vs_oop(t_ary->_elem); |
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1975 } |
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1976 return false; |
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1977 } |
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1978 #endif |
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1979 |
| 0 | 1980 //------------------------------dump2------------------------------------------ |
| 1981 #ifndef PRODUCT | |
| 1982 void TypeAry::dump2( Dict &d, uint depth, outputStream *st ) const { | |
|
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1983 if (_stable) st->print("stable:"); |
| 0 | 1984 _elem->dump2(d, depth, st); |
| 1985 st->print("["); | |
| 1986 _size->dump2(d, depth, st); | |
| 1987 st->print("]"); | |
| 1988 } | |
| 1989 #endif | |
| 1990 | |
| 1991 //------------------------------singleton-------------------------------------- | |
| 1992 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
| 1993 // constants (Ldi nodes). Singletons are integer, float or double constants | |
| 1994 // or a single symbol. | |
| 1995 bool TypeAry::singleton(void) const { | |
| 1996 return false; // Never a singleton | |
| 1997 } | |
| 1998 | |
| 1999 bool TypeAry::empty(void) const { | |
| 2000 return _elem->empty() || _size->empty(); | |
| 2001 } | |
| 2002 | |
| 2003 //--------------------------ary_must_be_exact---------------------------------- | |
| 2004 bool TypeAry::ary_must_be_exact() const { | |
| 2005 if (!UseExactTypes) return false; | |
| 2006 // This logic looks at the element type of an array, and returns true | |
| 2007 // if the element type is either a primitive or a final instance class. | |
| 2008 // In such cases, an array built on this ary must have no subclasses. | |
| 2009 if (_elem == BOTTOM) return false; // general array not exact | |
| 2010 if (_elem == TOP ) return false; // inverted general array not exact | |
|
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2011 const TypeOopPtr* toop = NULL; |
|
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2012 if (UseCompressedOops && _elem->isa_narrowoop()) { |
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2013 toop = _elem->make_ptr()->isa_oopptr(); |
|
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2014 } else { |
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2015 toop = _elem->isa_oopptr(); |
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2016 } |
| 0 | 2017 if (!toop) return true; // a primitive type, like int |
| 2018 ciKlass* tklass = toop->klass(); | |
| 2019 if (tklass == NULL) return false; // unloaded class | |
| 2020 if (!tklass->is_loaded()) return false; // unloaded class | |
|
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2021 const TypeInstPtr* tinst; |
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2022 if (_elem->isa_narrowoop()) |
|
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2023 tinst = _elem->make_ptr()->isa_instptr(); |
|
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|
2024 else |
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2025 tinst = _elem->isa_instptr(); |
|
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2026 if (tinst) |
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2027 return tklass->as_instance_klass()->is_final(); |
|
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|
2028 const TypeAryPtr* tap; |
|
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|
2029 if (_elem->isa_narrowoop()) |
|
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|
2030 tap = _elem->make_ptr()->isa_aryptr(); |
|
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|
2031 else |
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|
2032 tap = _elem->isa_aryptr(); |
|
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|
2033 if (tap) |
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|
2034 return tap->ary()->ary_must_be_exact(); |
| 0 | 2035 return false; |
| 2036 } | |
| 2037 | |
|
6179
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2038 //==============================TypeVect======================================= |
|
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|
2039 // Convenience common pre-built types. |
|
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2040 const TypeVect *TypeVect::VECTS = NULL; // 32-bit vectors |
|
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|
2041 const TypeVect *TypeVect::VECTD = NULL; // 64-bit vectors |
|
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|
2042 const TypeVect *TypeVect::VECTX = NULL; // 128-bit vectors |
|
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2043 const TypeVect *TypeVect::VECTY = NULL; // 256-bit vectors |
|
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|
2044 |
|
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|
2045 //------------------------------make------------------------------------------- |
|
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|
2046 const TypeVect* TypeVect::make(const Type *elem, uint length) { |
|
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|
2047 BasicType elem_bt = elem->array_element_basic_type(); |
|
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|
2048 assert(is_java_primitive(elem_bt), "only primitive types in vector"); |
|
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2049 assert(length > 1 && is_power_of_2(length), "vector length is power of 2"); |
|
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|
2050 assert(Matcher::vector_size_supported(elem_bt, length), "length in range"); |
|
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|
2051 int size = length * type2aelembytes(elem_bt); |
|
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2052 switch (Matcher::vector_ideal_reg(size)) { |
|
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|
2053 case Op_VecS: |
|
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2054 return (TypeVect*)(new TypeVectS(elem, length))->hashcons(); |
|
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|
2055 case Op_VecD: |
|
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|
2056 case Op_RegD: |
|
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|
2057 return (TypeVect*)(new TypeVectD(elem, length))->hashcons(); |
|
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|
2058 case Op_VecX: |
|
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2059 return (TypeVect*)(new TypeVectX(elem, length))->hashcons(); |
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|
2060 case Op_VecY: |
|
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2061 return (TypeVect*)(new TypeVectY(elem, length))->hashcons(); |
|
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|
2062 } |
|
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|
2063 ShouldNotReachHere(); |
|
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|
2064 return NULL; |
|
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|
2065 } |
|
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|
2066 |
|
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|
2067 //------------------------------meet------------------------------------------- |
|
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|
2068 // Compute the MEET of two types. It returns a new Type object. |
|
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|
2069 const Type *TypeVect::xmeet( const Type *t ) const { |
|
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|
2070 // Perform a fast test for common case; meeting the same types together. |
|
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|
2071 if( this == t ) return this; // Meeting same type-rep? |
|
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|
2072 |
|
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|
2073 // Current "this->_base" is Vector |
|
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|
2074 switch (t->base()) { // switch on original type |
|
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|
2075 |
|
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|
2076 case Bottom: // Ye Olde Default |
|
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|
2077 return t; |
|
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|
2078 |
|
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|
2079 default: // All else is a mistake |
|
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|
2080 typerr(t); |
|
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|
2081 |
|
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|
2082 case VectorS: |
|
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|
2083 case VectorD: |
|
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|
2084 case VectorX: |
|
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|
2085 case VectorY: { // Meeting 2 vectors? |
|
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|
2086 const TypeVect* v = t->is_vect(); |
|
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|
2087 assert( base() == v->base(), ""); |
|
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2088 assert(length() == v->length(), ""); |
|
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2089 assert(element_basic_type() == v->element_basic_type(), ""); |
|
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2090 return TypeVect::make(_elem->xmeet(v->_elem), _length); |
|
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|
2091 } |
|
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|
2092 case Top: |
|
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|
2093 break; |
|
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|
2094 } |
|
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|
2095 return this; |
|
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2096 } |
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2097 |
|
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2098 //------------------------------xdual------------------------------------------ |
|
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2099 // Dual: compute field-by-field dual |
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2100 const Type *TypeVect::xdual() const { |
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2101 return new TypeVect(base(), _elem->dual(), _length); |
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2102 } |
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2103 |
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2104 //------------------------------eq--------------------------------------------- |
|
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2105 // Structural equality check for Type representations |
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2106 bool TypeVect::eq(const Type *t) const { |
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2107 const TypeVect *v = t->is_vect(); |
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2108 return (_elem == v->_elem) && (_length == v->_length); |
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2109 } |
|
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2110 |
|
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2111 //------------------------------hash------------------------------------------- |
|
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2112 // Type-specific hashing function. |
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2113 int TypeVect::hash(void) const { |
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2114 return (intptr_t)_elem + (intptr_t)_length; |
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2115 } |
|
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2116 |
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2117 //------------------------------singleton-------------------------------------- |
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2118 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple |
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2119 // constants (Ldi nodes). Vector is singleton if all elements are the same |
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2120 // constant value (when vector is created with Replicate code). |
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2121 bool TypeVect::singleton(void) const { |
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2122 // There is no Con node for vectors yet. |
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2123 // return _elem->singleton(); |
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2124 return false; |
|
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2125 } |
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2126 |
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2127 bool TypeVect::empty(void) const { |
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2128 return _elem->empty(); |
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2129 } |
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2130 |
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2131 //------------------------------dump2------------------------------------------ |
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2132 #ifndef PRODUCT |
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2133 void TypeVect::dump2(Dict &d, uint depth, outputStream *st) const { |
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2134 switch (base()) { |
|
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2135 case VectorS: |
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2136 st->print("vectors["); break; |
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2137 case VectorD: |
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2138 st->print("vectord["); break; |
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2139 case VectorX: |
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2140 st->print("vectorx["); break; |
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2141 case VectorY: |
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2142 st->print("vectory["); break; |
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2143 default: |
|
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2144 ShouldNotReachHere(); |
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2145 } |
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2146 st->print("%d]:{", _length); |
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2147 _elem->dump2(d, depth, st); |
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2148 st->print("}"); |
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2149 } |
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2150 #endif |
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2151 |
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2152 |
| 0 | 2153 //============================================================================= |
| 2154 // Convenience common pre-built types. | |
| 2155 const TypePtr *TypePtr::NULL_PTR; | |
| 2156 const TypePtr *TypePtr::NOTNULL; | |
| 2157 const TypePtr *TypePtr::BOTTOM; | |
| 2158 | |
| 2159 //------------------------------meet------------------------------------------- | |
| 2160 // Meet over the PTR enum | |
| 2161 const TypePtr::PTR TypePtr::ptr_meet[TypePtr::lastPTR][TypePtr::lastPTR] = { | |
| 2162 // TopPTR, AnyNull, Constant, Null, NotNull, BotPTR, | |
| 2163 { /* Top */ TopPTR, AnyNull, Constant, Null, NotNull, BotPTR,}, | |
| 2164 { /* AnyNull */ AnyNull, AnyNull, Constant, BotPTR, NotNull, BotPTR,}, | |
| 2165 { /* Constant*/ Constant, Constant, Constant, BotPTR, NotNull, BotPTR,}, | |
| 2166 { /* Null */ Null, BotPTR, BotPTR, Null, BotPTR, BotPTR,}, | |
| 2167 { /* NotNull */ NotNull, NotNull, NotNull, BotPTR, NotNull, BotPTR,}, | |
| 2168 { /* BotPTR */ BotPTR, BotPTR, BotPTR, BotPTR, BotPTR, BotPTR,} | |
| 2169 }; | |
| 2170 | |
| 2171 //------------------------------make------------------------------------------- | |
| 2172 const TypePtr *TypePtr::make( TYPES t, enum PTR ptr, int offset ) { | |
| 2173 return (TypePtr*)(new TypePtr(t,ptr,offset))->hashcons(); | |
| 2174 } | |
| 2175 | |
| 2176 //------------------------------cast_to_ptr_type------------------------------- | |
| 2177 const Type *TypePtr::cast_to_ptr_type(PTR ptr) const { | |
| 2178 assert(_base == AnyPtr, "subclass must override cast_to_ptr_type"); | |
| 2179 if( ptr == _ptr ) return this; | |
| 2180 return make(_base, ptr, _offset); | |
| 2181 } | |
| 2182 | |
| 2183 //------------------------------get_con---------------------------------------- | |
| 2184 intptr_t TypePtr::get_con() const { | |
| 2185 assert( _ptr == Null, "" ); | |
| 2186 return _offset; | |
| 2187 } | |
| 2188 | |
| 2189 //------------------------------meet------------------------------------------- | |
| 2190 // Compute the MEET of two types. It returns a new Type object. | |
| 2191 const Type *TypePtr::xmeet( const Type *t ) const { | |
| 2192 // Perform a fast test for common case; meeting the same types together. | |
| 2193 if( this == t ) return this; // Meeting same type-rep? | |
| 2194 | |
| 2195 // Current "this->_base" is AnyPtr | |
| 2196 switch (t->base()) { // switch on original type | |
| 2197 case Int: // Mixing ints & oops happens when javac | |
| 2198 case Long: // reuses local variables | |
| 2199 case FloatTop: | |
| 2200 case FloatCon: | |
| 2201 case FloatBot: | |
| 2202 case DoubleTop: | |
| 2203 case DoubleCon: | |
| 2204 case DoubleBot: | |
|
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2205 case NarrowOop: |
|
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2206 case NarrowKlass: |
| 0 | 2207 case Bottom: // Ye Olde Default |
| 2208 return Type::BOTTOM; | |
| 2209 case Top: | |
| 2210 return this; | |
| 2211 | |
| 2212 case AnyPtr: { // Meeting to AnyPtrs | |
| 2213 const TypePtr *tp = t->is_ptr(); | |
| 2214 return make( AnyPtr, meet_ptr(tp->ptr()), meet_offset(tp->offset()) ); | |
| 2215 } | |
| 2216 case RawPtr: // For these, flip the call around to cut down | |
| 2217 case OopPtr: | |
| 2218 case InstPtr: // on the cases I have to handle. | |
|
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2219 case AryPtr: |
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2220 case MetadataPtr: |
| 0 | 2221 case KlassPtr: |
| 2222 return t->xmeet(this); // Call in reverse direction | |
| 2223 default: // All else is a mistake | |
| 2224 typerr(t); | |
| 2225 | |
| 2226 } | |
| 2227 return this; | |
| 2228 } | |
| 2229 | |
| 2230 //------------------------------meet_offset------------------------------------ | |
| 2231 int TypePtr::meet_offset( int offset ) const { | |
| 2232 // Either is 'TOP' offset? Return the other offset! | |
| 2233 if( _offset == OffsetTop ) return offset; | |
| 2234 if( offset == OffsetTop ) return _offset; | |
| 2235 // If either is different, return 'BOTTOM' offset | |
| 2236 if( _offset != offset ) return OffsetBot; | |
| 2237 return _offset; | |
| 2238 } | |
| 2239 | |
| 2240 //------------------------------dual_offset------------------------------------ | |
| 2241 int TypePtr::dual_offset( ) const { | |
| 2242 if( _offset == OffsetTop ) return OffsetBot;// Map 'TOP' into 'BOTTOM' | |
| 2243 if( _offset == OffsetBot ) return OffsetTop;// Map 'BOTTOM' into 'TOP' | |
| 2244 return _offset; // Map everything else into self | |
| 2245 } | |
| 2246 | |
| 2247 //------------------------------xdual------------------------------------------ | |
| 2248 // Dual: compute field-by-field dual | |
| 2249 const TypePtr::PTR TypePtr::ptr_dual[TypePtr::lastPTR] = { | |
| 2250 BotPTR, NotNull, Constant, Null, AnyNull, TopPTR | |
| 2251 }; | |
| 2252 const Type *TypePtr::xdual() const { | |
| 2253 return new TypePtr( AnyPtr, dual_ptr(), dual_offset() ); | |
| 2254 } | |
| 2255 | |
|
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2256 //------------------------------xadd_offset------------------------------------ |
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2257 int TypePtr::xadd_offset( intptr_t offset ) const { |
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2258 // Adding to 'TOP' offset? Return 'TOP'! |
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2259 if( _offset == OffsetTop || offset == OffsetTop ) return OffsetTop; |
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2260 // Adding to 'BOTTOM' offset? Return 'BOTTOM'! |
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2261 if( _offset == OffsetBot || offset == OffsetBot ) return OffsetBot; |
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2262 // Addition overflows or "accidentally" equals to OffsetTop? Return 'BOTTOM'! |
|
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2263 offset += (intptr_t)_offset; |
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2264 if (offset != (int)offset || offset == OffsetTop) return OffsetBot; |
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2265 |
|
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2266 // assert( _offset >= 0 && _offset+offset >= 0, "" ); |
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2267 // It is possible to construct a negative offset during PhaseCCP |
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2268 |
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2269 return (int)offset; // Sum valid offsets |
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2270 } |
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2271 |
| 0 | 2272 //------------------------------add_offset------------------------------------- |
|
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2273 const TypePtr *TypePtr::add_offset( intptr_t offset ) const { |
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2274 return make( AnyPtr, _ptr, xadd_offset(offset) ); |
| 0 | 2275 } |
| 2276 | |
| 2277 //------------------------------eq--------------------------------------------- | |
| 2278 // Structural equality check for Type representations | |
| 2279 bool TypePtr::eq( const Type *t ) const { | |
| 2280 const TypePtr *a = (const TypePtr*)t; | |
| 2281 return _ptr == a->ptr() && _offset == a->offset(); | |
| 2282 } | |
| 2283 | |
| 2284 //------------------------------hash------------------------------------------- | |
| 2285 // Type-specific hashing function. | |
| 2286 int TypePtr::hash(void) const { | |
| 2287 return _ptr + _offset; | |
| 2288 } | |
| 2289 | |
| 2290 //------------------------------dump2------------------------------------------ | |
| 2291 const char *const TypePtr::ptr_msg[TypePtr::lastPTR] = { | |
| 2292 "TopPTR","AnyNull","Constant","NULL","NotNull","BotPTR" | |
| 2293 }; | |
| 2294 | |
| 2295 #ifndef PRODUCT | |
| 2296 void TypePtr::dump2( Dict &d, uint depth, outputStream *st ) const { | |
| 2297 if( _ptr == Null ) st->print("NULL"); | |
| 2298 else st->print("%s *", ptr_msg[_ptr]); | |
| 2299 if( _offset == OffsetTop ) st->print("+top"); | |
| 2300 else if( _offset == OffsetBot ) st->print("+bot"); | |
| 2301 else if( _offset ) st->print("+%d", _offset); | |
| 2302 } | |
| 2303 #endif | |
| 2304 | |
| 2305 //------------------------------singleton-------------------------------------- | |
| 2306 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
| 2307 // constants | |
| 2308 bool TypePtr::singleton(void) const { | |
| 2309 // TopPTR, Null, AnyNull, Constant are all singletons | |
| 2310 return (_offset != OffsetBot) && !below_centerline(_ptr); | |
| 2311 } | |
| 2312 | |
| 2313 bool TypePtr::empty(void) const { | |
| 2314 return (_offset == OffsetTop) || above_centerline(_ptr); | |
| 2315 } | |
| 2316 | |
| 2317 //============================================================================= | |
| 2318 // Convenience common pre-built types. | |
| 2319 const TypeRawPtr *TypeRawPtr::BOTTOM; | |
| 2320 const TypeRawPtr *TypeRawPtr::NOTNULL; | |
| 2321 | |
| 2322 //------------------------------make------------------------------------------- | |
| 2323 const TypeRawPtr *TypeRawPtr::make( enum PTR ptr ) { | |
| 2324 assert( ptr != Constant, "what is the constant?" ); | |
| 2325 assert( ptr != Null, "Use TypePtr for NULL" ); | |
| 2326 return (TypeRawPtr*)(new TypeRawPtr(ptr,0))->hashcons(); | |
| 2327 } | |
| 2328 | |
| 2329 const TypeRawPtr *TypeRawPtr::make( address bits ) { | |
| 2330 assert( bits, "Use TypePtr for NULL" ); | |
| 2331 return (TypeRawPtr*)(new TypeRawPtr(Constant,bits))->hashcons(); | |
| 2332 } | |
| 2333 | |
| 2334 //------------------------------cast_to_ptr_type------------------------------- | |
| 2335 const Type *TypeRawPtr::cast_to_ptr_type(PTR ptr) const { | |
| 2336 assert( ptr != Constant, "what is the constant?" ); | |
| 2337 assert( ptr != Null, "Use TypePtr for NULL" ); | |
| 2338 assert( _bits==0, "Why cast a constant address?"); | |
| 2339 if( ptr == _ptr ) return this; | |
| 2340 return make(ptr); | |
| 2341 } | |
| 2342 | |
| 2343 //------------------------------get_con---------------------------------------- | |
| 2344 intptr_t TypeRawPtr::get_con() const { | |
| 2345 assert( _ptr == Null || _ptr == Constant, "" ); | |
| 2346 return (intptr_t)_bits; | |
| 2347 } | |
| 2348 | |
| 2349 //------------------------------meet------------------------------------------- | |
| 2350 // Compute the MEET of two types. It returns a new Type object. | |
| 2351 const Type *TypeRawPtr::xmeet( const Type *t ) const { | |
| 2352 // Perform a fast test for common case; meeting the same types together. | |
| 2353 if( this == t ) return this; // Meeting same type-rep? | |
| 2354 | |
| 2355 // Current "this->_base" is RawPtr | |
| 2356 switch( t->base() ) { // switch on original type | |
| 2357 case Bottom: // Ye Olde Default | |
| 2358 return t; | |
| 2359 case Top: | |
| 2360 return this; | |
| 2361 case AnyPtr: // Meeting to AnyPtrs | |
| 2362 break; | |
| 2363 case RawPtr: { // might be top, bot, any/not or constant | |
| 2364 enum PTR tptr = t->is_ptr()->ptr(); | |
| 2365 enum PTR ptr = meet_ptr( tptr ); | |
| 2366 if( ptr == Constant ) { // Cannot be equal constants, so... | |
| 2367 if( tptr == Constant && _ptr != Constant) return t; | |
| 2368 if( _ptr == Constant && tptr != Constant) return this; | |
| 2369 ptr = NotNull; // Fall down in lattice | |
| 2370 } | |
| 2371 return make( ptr ); | |
| 2372 } | |
| 2373 | |
| 2374 case OopPtr: | |
| 2375 case InstPtr: | |
|
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2376 case AryPtr: |
|
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2377 case MetadataPtr: |
| 0 | 2378 case KlassPtr: |
| 2379 return TypePtr::BOTTOM; // Oop meet raw is not well defined | |
| 2380 default: // All else is a mistake | |
| 2381 typerr(t); | |
| 2382 } | |
| 2383 | |
| 2384 // Found an AnyPtr type vs self-RawPtr type | |
| 2385 const TypePtr *tp = t->is_ptr(); | |
| 2386 switch (tp->ptr()) { | |
| 2387 case TypePtr::TopPTR: return this; | |
| 2388 case TypePtr::BotPTR: return t; | |
| 2389 case TypePtr::Null: | |
| 2390 if( _ptr == TypePtr::TopPTR ) return t; | |
| 2391 return TypeRawPtr::BOTTOM; | |
| 2392 case TypePtr::NotNull: return TypePtr::make( AnyPtr, meet_ptr(TypePtr::NotNull), tp->meet_offset(0) ); | |
| 2393 case TypePtr::AnyNull: | |
| 2394 if( _ptr == TypePtr::Constant) return this; | |
| 2395 return make( meet_ptr(TypePtr::AnyNull) ); | |
| 2396 default: ShouldNotReachHere(); | |
| 2397 } | |
| 2398 return this; | |
| 2399 } | |
| 2400 | |
| 2401 //------------------------------xdual------------------------------------------ | |
| 2402 // Dual: compute field-by-field dual | |
| 2403 const Type *TypeRawPtr::xdual() const { | |
| 2404 return new TypeRawPtr( dual_ptr(), _bits ); | |
| 2405 } | |
| 2406 | |
| 2407 //------------------------------add_offset------------------------------------- | |
|
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2408 const TypePtr *TypeRawPtr::add_offset( intptr_t offset ) const { |
| 0 | 2409 if( offset == OffsetTop ) return BOTTOM; // Undefined offset-> undefined pointer |
| 2410 if( offset == OffsetBot ) return BOTTOM; // Unknown offset-> unknown pointer | |
| 2411 if( offset == 0 ) return this; // No change | |
| 2412 switch (_ptr) { | |
| 2413 case TypePtr::TopPTR: | |
| 2414 case TypePtr::BotPTR: | |
| 2415 case TypePtr::NotNull: | |
| 2416 return this; | |
| 2417 case TypePtr::Null: | |
|
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|
2418 case TypePtr::Constant: { |
|
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|
2419 address bits = _bits+offset; |
|
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2420 if ( bits == 0 ) return TypePtr::NULL_PTR; |
|
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|
2421 return make( bits ); |
|
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|
2422 } |
| 0 | 2423 default: ShouldNotReachHere(); |
| 2424 } | |
| 2425 return NULL; // Lint noise | |
| 2426 } | |
| 2427 | |
| 2428 //------------------------------eq--------------------------------------------- | |
| 2429 // Structural equality check for Type representations | |
| 2430 bool TypeRawPtr::eq( const Type *t ) const { | |
| 2431 const TypeRawPtr *a = (const TypeRawPtr*)t; | |
| 2432 return _bits == a->_bits && TypePtr::eq(t); | |
| 2433 } | |
| 2434 | |
| 2435 //------------------------------hash------------------------------------------- | |
| 2436 // Type-specific hashing function. | |
| 2437 int TypeRawPtr::hash(void) const { | |
| 2438 return (intptr_t)_bits + TypePtr::hash(); | |
| 2439 } | |
| 2440 | |
| 2441 //------------------------------dump2------------------------------------------ | |
| 2442 #ifndef PRODUCT | |
| 2443 void TypeRawPtr::dump2( Dict &d, uint depth, outputStream *st ) const { | |
| 2444 if( _ptr == Constant ) | |
| 2445 st->print(INTPTR_FORMAT, _bits); | |
| 2446 else | |
| 2447 st->print("rawptr:%s", ptr_msg[_ptr]); | |
| 2448 } | |
| 2449 #endif | |
| 2450 | |
| 2451 //============================================================================= | |
| 2452 // Convenience common pre-built type. | |
| 2453 const TypeOopPtr *TypeOopPtr::BOTTOM; | |
| 2454 | |
| 163 | 2455 //------------------------------TypeOopPtr------------------------------------- |
| 12966 | 2456 TypeOopPtr::TypeOopPtr(TYPES t, PTR ptr, ciKlass* k, bool xk, ciObject* o, int offset, int instance_id, const TypeOopPtr* speculative) |
| 163 | 2457 : TypePtr(t, ptr, offset), |
| 2458 _const_oop(o), _klass(k), | |
| 2459 _klass_is_exact(xk), | |
| 2460 _is_ptr_to_narrowoop(false), | |
|
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|
2461 _is_ptr_to_narrowklass(false), |
| 10278 | 2462 _is_ptr_to_boxed_value(false), |
| 12966 | 2463 _instance_id(instance_id), |
| 2464 _speculative(speculative) { | |
| 10278 | 2465 if (Compile::current()->eliminate_boxing() && (t == InstPtr) && |
| 2466 (offset > 0) && xk && (k != 0) && k->is_instance_klass()) { | |
| 2467 _is_ptr_to_boxed_value = k->as_instance_klass()->is_boxed_value_offset(offset); | |
| 2468 } | |
| 163 | 2469 #ifdef _LP64 |
|
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2470 if (_offset != 0) { |
|
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2471 if (_offset == oopDesc::klass_offset_in_bytes()) { |
|
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|
2472 _is_ptr_to_narrowklass = UseCompressedClassPointers; |
|
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2473 } else if (klass() == NULL) { |
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2474 // Array with unknown body type |
| 163 | 2475 assert(this->isa_aryptr(), "only arrays without klass"); |
|
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2476 _is_ptr_to_narrowoop = UseCompressedOops; |
| 163 | 2477 } else if (this->isa_aryptr()) { |
|
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2478 _is_ptr_to_narrowoop = (UseCompressedOops && klass()->is_obj_array_klass() && |
| 163 | 2479 _offset != arrayOopDesc::length_offset_in_bytes()); |
| 2480 } else if (klass()->is_instance_klass()) { | |
| 2481 ciInstanceKlass* ik = klass()->as_instance_klass(); | |
| 2482 ciField* field = NULL; | |
| 2483 if (this->isa_klassptr()) { | |
|
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2484 // Perm objects don't use compressed references |
| 163 | 2485 } else if (_offset == OffsetBot || _offset == OffsetTop) { |
| 2486 // unsafe access | |
|
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|
2487 _is_ptr_to_narrowoop = UseCompressedOops; |
| 163 | 2488 } else { // exclude unsafe ops |
| 2489 assert(this->isa_instptr(), "must be an instance ptr."); | |
|
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2490 |
|
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2491 if (klass() == ciEnv::current()->Class_klass() && |
|
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2492 (_offset == java_lang_Class::klass_offset_in_bytes() || |
|
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2493 _offset == java_lang_Class::array_klass_offset_in_bytes())) { |
|
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2494 // Special hidden fields from the Class. |
|
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|
2495 assert(this->isa_instptr(), "must be an instance ptr."); |
|
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2496 _is_ptr_to_narrowoop = false; |
|
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|
2497 } else if (klass() == ciEnv::current()->Class_klass() && |
|
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|
2498 _offset >= InstanceMirrorKlass::offset_of_static_fields()) { |
|
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|
2499 // Static fields |
|
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|
2500 assert(o != NULL, "must be constant"); |
|
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|
2501 ciInstanceKlass* k = o->as_instance()->java_lang_Class_klass()->as_instance_klass(); |
|
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|
2502 ciField* field = k->get_field_by_offset(_offset, true); |
|
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|
2503 assert(field != NULL, "missing field"); |
| 163 | 2504 BasicType basic_elem_type = field->layout_type(); |
|
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2505 _is_ptr_to_narrowoop = UseCompressedOops && (basic_elem_type == T_OBJECT || |
|
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|
2506 basic_elem_type == T_ARRAY); |
| 163 | 2507 } else { |
|
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|
2508 // Instance fields which contains a compressed oop references. |
|
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|
2509 field = ik->get_field_by_offset(_offset, false); |
|
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|
2510 if (field != NULL) { |
|
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2511 BasicType basic_elem_type = field->layout_type(); |
|
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2512 _is_ptr_to_narrowoop = UseCompressedOops && (basic_elem_type == T_OBJECT || |
|
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|
2513 basic_elem_type == T_ARRAY); |
|
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|
2514 } else if (klass()->equals(ciEnv::current()->Object_klass())) { |
|
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2515 // Compile::find_alias_type() cast exactness on all types to verify |
|
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|
2516 // that it does not affect alias type. |
|
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|
2517 _is_ptr_to_narrowoop = UseCompressedOops; |
|
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|
2518 } else { |
|
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|
2519 // Type for the copy start in LibraryCallKit::inline_native_clone(). |
|
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|
2520 _is_ptr_to_narrowoop = UseCompressedOops; |
|
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|
2521 } |
| 163 | 2522 } |
| 2523 } | |
| 2524 } | |
| 2525 } | |
| 2526 #endif | |
| 2527 } | |
| 2528 | |
| 0 | 2529 //------------------------------make------------------------------------------- |
| 2530 const TypeOopPtr *TypeOopPtr::make(PTR ptr, | |
| 12966 | 2531 int offset, int instance_id, const TypeOopPtr* speculative) { |
| 0 | 2532 assert(ptr != Constant, "no constant generic pointers"); |
|
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|
2533 ciKlass* k = Compile::current()->env()->Object_klass(); |
| 0 | 2534 bool xk = false; |
| 2535 ciObject* o = NULL; | |
| 12966 | 2536 return (TypeOopPtr*)(new TypeOopPtr(OopPtr, ptr, k, xk, o, offset, instance_id, speculative))->hashcons(); |
| 0 | 2537 } |
| 2538 | |
| 2539 | |
| 2540 //------------------------------cast_to_ptr_type------------------------------- | |
| 2541 const Type *TypeOopPtr::cast_to_ptr_type(PTR ptr) const { | |
| 2542 assert(_base == OopPtr, "subclass must override cast_to_ptr_type"); | |
| 2543 if( ptr == _ptr ) return this; | |
| 12966 | 2544 return make(ptr, _offset, _instance_id, _speculative); |
| 0 | 2545 } |
| 2546 | |
| 247 | 2547 //-----------------------------cast_to_instance_id---------------------------- |
| 223 | 2548 const TypeOopPtr *TypeOopPtr::cast_to_instance_id(int instance_id) const { |
| 0 | 2549 // There are no instances of a general oop. |
| 2550 // Return self unchanged. | |
| 2551 return this; | |
| 2552 } | |
| 2553 | |
| 2554 //-----------------------------cast_to_exactness------------------------------- | |
| 2555 const Type *TypeOopPtr::cast_to_exactness(bool klass_is_exact) const { | |
| 2556 // There is no such thing as an exact general oop. | |
| 2557 // Return self unchanged. | |
| 2558 return this; | |
| 2559 } | |
| 2560 | |
| 2561 | |
| 2562 //------------------------------as_klass_type---------------------------------- | |
| 2563 // Return the klass type corresponding to this instance or array type. | |
| 2564 // It is the type that is loaded from an object of this type. | |
| 2565 const TypeKlassPtr* TypeOopPtr::as_klass_type() const { | |
| 2566 ciKlass* k = klass(); | |
| 2567 bool xk = klass_is_exact(); | |
|
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2568 if (k == NULL) |
| 0 | 2569 return TypeKlassPtr::OBJECT; |
| 2570 else | |
| 2571 return TypeKlassPtr::make(xk? Constant: NotNull, k, 0); | |
| 2572 } | |
| 2573 | |
| 12966 | 2574 const Type *TypeOopPtr::xmeet(const Type *t) const { |
| 2575 const Type* res = xmeet_helper(t); | |
| 2576 if (res->isa_oopptr() == NULL) { | |
| 2577 return res; | |
| 2578 } | |
| 2579 | |
|
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|
2580 const TypeOopPtr* res_oopptr = res->is_oopptr(); |
|
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|
2581 if (res_oopptr->speculative() != NULL) { |
| 12966 | 2582 // type->speculative() == NULL means that speculation is no better |
| 2583 // than type, i.e. type->speculative() == type. So there are 2 | |
| 2584 // ways to represent the fact that we have no useful speculative | |
| 2585 // data and we should use a single one to be able to test for | |
| 2586 // equality between types. Check whether type->speculative() == | |
| 2587 // type and set speculative to NULL if it is the case. | |
| 2588 if (res_oopptr->remove_speculative() == res_oopptr->speculative()) { | |
| 2589 return res_oopptr->remove_speculative(); | |
| 2590 } | |
| 2591 } | |
| 2592 | |
| 2593 return res; | |
| 2594 } | |
| 0 | 2595 |
| 2596 //------------------------------meet------------------------------------------- | |
| 2597 // Compute the MEET of two types. It returns a new Type object. | |
| 12966 | 2598 const Type *TypeOopPtr::xmeet_helper(const Type *t) const { |
| 0 | 2599 // Perform a fast test for common case; meeting the same types together. |
| 2600 if( this == t ) return this; // Meeting same type-rep? | |
| 2601 | |
| 2602 // Current "this->_base" is OopPtr | |
| 2603 switch (t->base()) { // switch on original type | |
| 2604 | |
| 2605 case Int: // Mixing ints & oops happens when javac | |
| 2606 case Long: // reuses local variables | |
| 2607 case FloatTop: | |
| 2608 case FloatCon: | |
| 2609 case FloatBot: | |
| 2610 case DoubleTop: | |
| 2611 case DoubleCon: | |
| 2612 case DoubleBot: | |
|
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|
2613 case NarrowOop: |
|
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|
2614 case NarrowKlass: |
| 0 | 2615 case Bottom: // Ye Olde Default |
| 2616 return Type::BOTTOM; | |
| 2617 case Top: | |
| 2618 return this; | |
| 2619 | |
| 2620 default: // All else is a mistake | |
| 2621 typerr(t); | |
| 2622 | |
| 2623 case RawPtr: | |
|
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2624 case MetadataPtr: |
|
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2625 case KlassPtr: |
| 0 | 2626 return TypePtr::BOTTOM; // Oop meet raw is not well defined |
| 2627 | |
| 2628 case AnyPtr: { | |
| 2629 // Found an AnyPtr type vs self-OopPtr type | |
| 2630 const TypePtr *tp = t->is_ptr(); | |
| 2631 int offset = meet_offset(tp->offset()); | |
| 2632 PTR ptr = meet_ptr(tp->ptr()); | |
| 2633 switch (tp->ptr()) { | |
| 2634 case Null: | |
| 2635 if (ptr == Null) return TypePtr::make(AnyPtr, ptr, offset); | |
| 2636 // else fall through: | |
| 2637 case TopPTR: | |
| 992 | 2638 case AnyNull: { |
| 2639 int instance_id = meet_instance_id(InstanceTop); | |
| 12966 | 2640 const TypeOopPtr* speculative = _speculative; |
| 2641 return make(ptr, offset, instance_id, speculative); | |
| 992 | 2642 } |
| 0 | 2643 case BotPTR: |
| 2644 case NotNull: | |
| 2645 return TypePtr::make(AnyPtr, ptr, offset); | |
| 2646 default: typerr(t); | |
| 2647 } | |
| 2648 } | |
| 2649 | |
| 2650 case OopPtr: { // Meeting to other OopPtrs | |
| 2651 const TypeOopPtr *tp = t->is_oopptr(); | |
|
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|
2652 int instance_id = meet_instance_id(tp->instance_id()); |
|
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|
2653 const TypeOopPtr* speculative = xmeet_speculative(tp); |
| 12966 | 2654 return make(meet_ptr(tp->ptr()), meet_offset(tp->offset()), instance_id, speculative); |
| 0 | 2655 } |
| 2656 | |
| 2657 case InstPtr: // For these, flip the call around to cut down | |
| 2658 case AryPtr: | |
| 2659 return t->xmeet(this); // Call in reverse direction | |
| 2660 | |
| 2661 } // End of switch | |
| 2662 return this; // Return the double constant | |
| 2663 } | |
| 2664 | |
| 2665 | |
| 2666 //------------------------------xdual------------------------------------------ | |
| 2667 // Dual of a pure heap pointer. No relevant klass or oop information. | |
| 2668 const Type *TypeOopPtr::xdual() const { | |
|
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2669 assert(klass() == Compile::current()->env()->Object_klass(), "no klasses here"); |
| 0 | 2670 assert(const_oop() == NULL, "no constants here"); |
| 12966 | 2671 return new TypeOopPtr(_base, dual_ptr(), klass(), klass_is_exact(), const_oop(), dual_offset(), dual_instance_id(), dual_speculative()); |
| 0 | 2672 } |
| 2673 | |
| 2674 //--------------------------make_from_klass_common----------------------------- | |
| 2675 // Computes the element-type given a klass. | |
| 2676 const TypeOopPtr* TypeOopPtr::make_from_klass_common(ciKlass *klass, bool klass_change, bool try_for_exact) { | |
| 2677 if (klass->is_instance_klass()) { | |
| 2678 Compile* C = Compile::current(); | |
| 2679 Dependencies* deps = C->dependencies(); | |
| 2680 assert((deps != NULL) == (C->method() != NULL && C->method()->code_size() > 0), "sanity"); | |
| 2681 // Element is an instance | |
| 2682 bool klass_is_exact = false; | |
| 2683 if (klass->is_loaded()) { | |
| 2684 // Try to set klass_is_exact. | |
| 2685 ciInstanceKlass* ik = klass->as_instance_klass(); | |
| 2686 klass_is_exact = ik->is_final(); | |
| 2687 if (!klass_is_exact && klass_change | |
| 2688 && deps != NULL && UseUniqueSubclasses) { | |
| 2689 ciInstanceKlass* sub = ik->unique_concrete_subklass(); | |
| 2690 if (sub != NULL) { | |
| 2691 deps->assert_abstract_with_unique_concrete_subtype(ik, sub); | |
| 2692 klass = ik = sub; | |
| 2693 klass_is_exact = sub->is_final(); | |
| 2694 } | |
| 2695 } | |
| 2696 if (!klass_is_exact && try_for_exact | |
| 2697 && deps != NULL && UseExactTypes) { | |
| 2698 if (!ik->is_interface() && !ik->has_subklass()) { | |
| 2699 // Add a dependence; if concrete subclass added we need to recompile | |
| 2700 deps->assert_leaf_type(ik); | |
| 2701 klass_is_exact = true; | |
| 2702 } | |
| 2703 } | |
| 2704 } | |
| 2705 return TypeInstPtr::make(TypePtr::BotPTR, klass, klass_is_exact, NULL, 0); | |
| 2706 } else if (klass->is_obj_array_klass()) { | |
| 2707 // Element is an object array. Recursively call ourself. | |
| 2708 const TypeOopPtr *etype = TypeOopPtr::make_from_klass_common(klass->as_obj_array_klass()->element_klass(), false, try_for_exact); | |
| 2709 bool xk = etype->klass_is_exact(); | |
| 2710 const TypeAry* arr0 = TypeAry::make(etype, TypeInt::POS); | |
| 2711 // We used to pass NotNull in here, asserting that the sub-arrays | |
| 2712 // are all not-null. This is not true in generally, as code can | |
| 2713 // slam NULLs down in the subarrays. | |
| 2714 const TypeAryPtr* arr = TypeAryPtr::make(TypePtr::BotPTR, arr0, klass, xk, 0); | |
| 2715 return arr; | |
| 2716 } else if (klass->is_type_array_klass()) { | |
| 2717 // Element is an typeArray | |
| 2718 const Type* etype = get_const_basic_type(klass->as_type_array_klass()->element_type()); | |
| 2719 const TypeAry* arr0 = TypeAry::make(etype, TypeInt::POS); | |
| 2720 // We used to pass NotNull in here, asserting that the array pointer | |
| 2721 // is not-null. That was not true in general. | |
| 2722 const TypeAryPtr* arr = TypeAryPtr::make(TypePtr::BotPTR, arr0, klass, true, 0); | |
| 2723 return arr; | |
| 2724 } else { | |
| 2725 ShouldNotReachHere(); | |
| 2726 return NULL; | |
| 2727 } | |
| 2728 } | |
| 2729 | |
| 2730 //------------------------------make_from_constant----------------------------- | |
| 2731 // Make a java pointer from an oop constant | |
| 10278 | 2732 const TypeOopPtr* TypeOopPtr::make_from_constant(ciObject* o, |
| 2733 bool require_constant, | |
| 2734 bool is_autobox_cache) { | |
| 2735 assert(!o->is_null_object(), "null object not yet handled here."); | |
| 2736 ciKlass* klass = o->klass(); | |
| 2737 if (klass->is_instance_klass()) { | |
| 2738 // Element is an instance | |
| 2739 if (require_constant) { | |
| 2740 if (!o->can_be_constant()) return NULL; | |
| 2741 } else if (!o->should_be_constant()) { | |
| 2742 return TypeInstPtr::make(TypePtr::NotNull, klass, true, NULL, 0); | |
| 2743 } | |
| 2744 return TypeInstPtr::make(o); | |
| 2745 } else if (klass->is_obj_array_klass()) { | |
| 2746 // Element is an object array. Recursively call ourself. | |
| 2747 const TypeOopPtr *etype = | |
|
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2748 TypeOopPtr::make_from_klass_raw(klass->as_obj_array_klass()->element_klass()); |
| 10278 | 2749 if (is_autobox_cache) { |
| 2750 // The pointers in the autobox arrays are always non-null. | |
| 2751 etype = etype->cast_to_ptr_type(TypePtr::NotNull)->is_oopptr(); | |
| 2752 } | |
| 2753 const TypeAry* arr0 = TypeAry::make(etype, TypeInt::make(o->as_array()->length())); | |
| 2754 // We used to pass NotNull in here, asserting that the sub-arrays | |
| 2755 // are all not-null. This is not true in generally, as code can | |
| 2756 // slam NULLs down in the subarrays. | |
| 2757 if (require_constant) { | |
| 2758 if (!o->can_be_constant()) return NULL; | |
| 2759 } else if (!o->should_be_constant()) { | |
| 2760 return TypeAryPtr::make(TypePtr::NotNull, arr0, klass, true, 0); | |
| 2761 } | |
| 12966 | 2762 const TypeAryPtr* arr = TypeAryPtr::make(TypePtr::Constant, o, arr0, klass, true, 0, InstanceBot, NULL, is_autobox_cache); |
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2763 return arr; |
| 10278 | 2764 } else if (klass->is_type_array_klass()) { |
| 2765 // Element is an typeArray | |
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2766 const Type* etype = |
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2767 (Type*)get_const_basic_type(klass->as_type_array_klass()->element_type()); |
| 10278 | 2768 const TypeAry* arr0 = TypeAry::make(etype, TypeInt::make(o->as_array()->length())); |
| 2769 // We used to pass NotNull in here, asserting that the array pointer | |
| 2770 // is not-null. That was not true in general. | |
| 2771 if (require_constant) { | |
| 2772 if (!o->can_be_constant()) return NULL; | |
| 2773 } else if (!o->should_be_constant()) { | |
| 2774 return TypeAryPtr::make(TypePtr::NotNull, arr0, klass, true, 0); | |
| 2775 } | |
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2776 const TypeAryPtr* arr = TypeAryPtr::make(TypePtr::Constant, o, arr0, klass, true, 0); |
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2777 return arr; |
| 0 | 2778 } |
| 2779 | |
|
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2780 fatal("unhandled object type"); |
| 0 | 2781 return NULL; |
| 2782 } | |
| 2783 | |
| 2784 //------------------------------get_con---------------------------------------- | |
| 2785 intptr_t TypeOopPtr::get_con() const { | |
| 2786 assert( _ptr == Null || _ptr == Constant, "" ); | |
| 2787 assert( _offset >= 0, "" ); | |
| 2788 | |
| 2789 if (_offset != 0) { | |
| 2790 // After being ported to the compiler interface, the compiler no longer | |
| 2791 // directly manipulates the addresses of oops. Rather, it only has a pointer | |
| 2792 // to a handle at compile time. This handle is embedded in the generated | |
| 2793 // code and dereferenced at the time the nmethod is made. Until that time, | |
| 2794 // it is not reasonable to do arithmetic with the addresses of oops (we don't | |
| 2795 // have access to the addresses!). This does not seem to currently happen, | |
| 605 | 2796 // but this assertion here is to help prevent its occurence. |
| 0 | 2797 tty->print_cr("Found oop constant with non-zero offset"); |
| 2798 ShouldNotReachHere(); | |
| 2799 } | |
| 2800 | |
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2801 return (intptr_t)const_oop()->constant_encoding(); |
| 0 | 2802 } |
| 2803 | |
| 2804 | |
| 2805 //-----------------------------filter------------------------------------------ | |
| 2806 // Do not allow interface-vs.-noninterface joins to collapse to top. | |
|
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2807 const Type *TypeOopPtr::filter_helper(const Type *kills, bool include_speculative) const { |
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2808 |
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2809 const Type* ft = join_helper(kills, include_speculative); |
| 0 | 2810 const TypeInstPtr* ftip = ft->isa_instptr(); |
| 2811 const TypeInstPtr* ktip = kills->isa_instptr(); | |
| 2812 | |
| 2813 if (ft->empty()) { | |
| 2814 // Check for evil case of 'this' being a class and 'kills' expecting an | |
| 2815 // interface. This can happen because the bytecodes do not contain | |
| 2816 // enough type info to distinguish a Java-level interface variable | |
| 2817 // from a Java-level object variable. If we meet 2 classes which | |
| 2818 // both implement interface I, but their meet is at 'j/l/O' which | |
| 2819 // doesn't implement I, we have no way to tell if the result should | |
| 2820 // be 'I' or 'j/l/O'. Thus we'll pick 'j/l/O'. If this then flows | |
| 2821 // into a Phi which "knows" it's an Interface type we'll have to | |
| 2822 // uplift the type. | |
| 2823 if (!empty() && ktip != NULL && ktip->is_loaded() && ktip->klass()->is_interface()) | |
| 2824 return kills; // Uplift to interface | |
| 2825 | |
| 2826 return Type::TOP; // Canonical empty value | |
| 2827 } | |
| 2828 | |
| 2829 // If we have an interface-typed Phi or cast and we narrow to a class type, | |
| 2830 // the join should report back the class. However, if we have a J/L/Object | |
| 2831 // class-typed Phi and an interface flows in, it's possible that the meet & | |
| 2832 // join report an interface back out. This isn't possible but happens | |
| 2833 // because the type system doesn't interact well with interfaces. | |
| 2834 if (ftip != NULL && ktip != NULL && | |
| 2835 ftip->is_loaded() && ftip->klass()->is_interface() && | |
| 2836 ktip->is_loaded() && !ktip->klass()->is_interface()) { | |
| 2837 // Happens in a CTW of rt.jar, 320-341, no extra flags | |
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2838 assert(!ftip->klass_is_exact(), "interface could not be exact"); |
| 0 | 2839 return ktip->cast_to_ptr_type(ftip->ptr()); |
| 2840 } | |
| 2841 | |
| 2842 return ft; | |
| 2843 } | |
| 2844 | |
| 2845 //------------------------------eq--------------------------------------------- | |
| 2846 // Structural equality check for Type representations | |
| 2847 bool TypeOopPtr::eq( const Type *t ) const { | |
| 2848 const TypeOopPtr *a = (const TypeOopPtr*)t; | |
| 2849 if (_klass_is_exact != a->_klass_is_exact || | |
| 12966 | 2850 _instance_id != a->_instance_id || |
| 2851 !eq_speculative(a)) return false; | |
| 0 | 2852 ciObject* one = const_oop(); |
| 2853 ciObject* two = a->const_oop(); | |
| 2854 if (one == NULL || two == NULL) { | |
| 2855 return (one == two) && TypePtr::eq(t); | |
| 2856 } else { | |
| 2857 return one->equals(two) && TypePtr::eq(t); | |
| 2858 } | |
| 2859 } | |
| 2860 | |
| 2861 //------------------------------hash------------------------------------------- | |
| 2862 // Type-specific hashing function. | |
| 2863 int TypeOopPtr::hash(void) const { | |
| 2864 return | |
| 2865 (const_oop() ? const_oop()->hash() : 0) + | |
| 2866 _klass_is_exact + | |
| 2867 _instance_id + | |
| 12966 | 2868 hash_speculative() + |
| 0 | 2869 TypePtr::hash(); |
| 2870 } | |
| 2871 | |
| 2872 //------------------------------dump2------------------------------------------ | |
| 2873 #ifndef PRODUCT | |
| 2874 void TypeOopPtr::dump2( Dict &d, uint depth, outputStream *st ) const { | |
| 2875 st->print("oopptr:%s", ptr_msg[_ptr]); | |
| 2876 if( _klass_is_exact ) st->print(":exact"); | |
| 2877 if( const_oop() ) st->print(INTPTR_FORMAT, const_oop()); | |
| 2878 switch( _offset ) { | |
| 2879 case OffsetTop: st->print("+top"); break; | |
| 2880 case OffsetBot: st->print("+any"); break; | |
| 2881 case 0: break; | |
| 2882 default: st->print("+%d",_offset); break; | |
| 2883 } | |
| 223 | 2884 if (_instance_id == InstanceTop) |
| 2885 st->print(",iid=top"); | |
| 2886 else if (_instance_id != InstanceBot) | |
| 0 | 2887 st->print(",iid=%d",_instance_id); |
| 12966 | 2888 |
| 2889 dump_speculative(st); | |
| 2890 } | |
| 2891 | |
| 2892 /** | |
| 2893 *dump the speculative part of the type | |
| 2894 */ | |
| 2895 void TypeOopPtr::dump_speculative(outputStream *st) const { | |
| 2896 if (_speculative != NULL) { | |
| 2897 st->print(" (speculative="); | |
| 2898 _speculative->dump_on(st); | |
| 2899 st->print(")"); | |
| 2900 } | |
| 0 | 2901 } |
| 2902 #endif | |
| 2903 | |
| 2904 //------------------------------singleton-------------------------------------- | |
| 2905 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
| 2906 // constants | |
| 2907 bool TypeOopPtr::singleton(void) const { | |
| 2908 // detune optimizer to not generate constant oop + constant offset as a constant! | |
| 2909 // TopPTR, Null, AnyNull, Constant are all singletons | |
| 2910 return (_offset == 0) && !below_centerline(_ptr); | |
| 2911 } | |
| 2912 | |
| 2913 //------------------------------add_offset------------------------------------- | |
| 12966 | 2914 const TypePtr *TypeOopPtr::add_offset(intptr_t offset) const { |
| 2915 return make(_ptr, xadd_offset(offset), _instance_id, add_offset_speculative(offset)); | |
| 2916 } | |
| 2917 | |
| 2918 /** | |
| 2919 * Return same type without a speculative part | |
| 2920 */ | |
|
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2921 const Type* TypeOopPtr::remove_speculative() const { |
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2922 if (_speculative == NULL) { |
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2923 return this; |
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2924 } |
| 12966 | 2925 return make(_ptr, _offset, _instance_id, NULL); |
| 0 | 2926 } |
| 2927 | |
| 223 | 2928 //------------------------------meet_instance_id-------------------------------- |
| 2929 int TypeOopPtr::meet_instance_id( int instance_id ) const { | |
| 2930 // Either is 'TOP' instance? Return the other instance! | |
| 2931 if( _instance_id == InstanceTop ) return instance_id; | |
| 2932 if( instance_id == InstanceTop ) return _instance_id; | |
| 2933 // If either is different, return 'BOTTOM' instance | |
| 2934 if( _instance_id != instance_id ) return InstanceBot; | |
| 2935 return _instance_id; | |
| 0 | 2936 } |
| 2937 | |
| 223 | 2938 //------------------------------dual_instance_id-------------------------------- |
| 2939 int TypeOopPtr::dual_instance_id( ) const { | |
| 2940 if( _instance_id == InstanceTop ) return InstanceBot; // Map TOP into BOTTOM | |
| 2941 if( _instance_id == InstanceBot ) return InstanceTop; // Map BOTTOM into TOP | |
| 2942 return _instance_id; // Map everything else into self | |
| 2943 } | |
| 2944 | |
| 12966 | 2945 /** |
| 2946 * meet of the speculative parts of 2 types | |
| 2947 * | |
| 2948 * @param other type to meet with | |
| 2949 */ | |
|
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2950 const TypeOopPtr* TypeOopPtr::xmeet_speculative(const TypeOopPtr* other) const { |
| 12966 | 2951 bool this_has_spec = (_speculative != NULL); |
| 2952 bool other_has_spec = (other->speculative() != NULL); | |
| 2953 | |
| 2954 if (!this_has_spec && !other_has_spec) { | |
| 2955 return NULL; | |
| 2956 } | |
| 2957 | |
| 2958 // If we are at a point where control flow meets and one branch has | |
| 2959 // a speculative type and the other has not, we meet the speculative | |
| 2960 // type of one branch with the actual type of the other. If the | |
| 2961 // actual type is exact and the speculative is as well, then the | |
| 2962 // result is a speculative type which is exact and we can continue | |
| 2963 // speculation further. | |
| 2964 const TypeOopPtr* this_spec = _speculative; | |
| 2965 const TypeOopPtr* other_spec = other->speculative(); | |
| 2966 | |
| 2967 if (!this_has_spec) { | |
| 2968 this_spec = this; | |
| 2969 } | |
| 2970 | |
| 2971 if (!other_has_spec) { | |
| 2972 other_spec = other; | |
| 2973 } | |
| 2974 | |
|
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2975 return this_spec->meet_speculative(other_spec)->is_oopptr(); |
| 12966 | 2976 } |
| 2977 | |
| 2978 /** | |
| 2979 * dual of the speculative part of the type | |
| 2980 */ | |
| 2981 const TypeOopPtr* TypeOopPtr::dual_speculative() const { | |
| 2982 if (_speculative == NULL) { | |
| 2983 return NULL; | |
| 2984 } | |
| 2985 return _speculative->dual()->is_oopptr(); | |
| 2986 } | |
| 2987 | |
| 2988 /** | |
| 2989 * add offset to the speculative part of the type | |
| 2990 * | |
| 2991 * @param offset offset to add | |
| 2992 */ | |
| 2993 const TypeOopPtr* TypeOopPtr::add_offset_speculative(intptr_t offset) const { | |
| 2994 if (_speculative == NULL) { | |
| 2995 return NULL; | |
| 2996 } | |
| 2997 return _speculative->add_offset(offset)->is_oopptr(); | |
| 2998 } | |
| 2999 | |
| 3000 /** | |
| 3001 * Are the speculative parts of 2 types equal? | |
| 3002 * | |
| 3003 * @param other type to compare this one to | |
| 3004 */ | |
| 3005 bool TypeOopPtr::eq_speculative(const TypeOopPtr* other) const { | |
| 3006 if (_speculative == NULL || other->speculative() == NULL) { | |
| 3007 return _speculative == other->speculative(); | |
| 3008 } | |
| 3009 | |
| 3010 if (_speculative->base() != other->speculative()->base()) { | |
| 3011 return false; | |
| 3012 } | |
| 3013 | |
| 3014 return _speculative->eq(other->speculative()); | |
| 3015 } | |
| 3016 | |
| 3017 /** | |
| 3018 * Hash of the speculative part of the type | |
| 3019 */ | |
| 3020 int TypeOopPtr::hash_speculative() const { | |
| 3021 if (_speculative == NULL) { | |
| 3022 return 0; | |
| 3023 } | |
| 3024 | |
| 3025 return _speculative->hash(); | |
| 3026 } | |
| 3027 | |
| 223 | 3028 |
| 0 | 3029 //============================================================================= |
| 3030 // Convenience common pre-built types. | |
| 3031 const TypeInstPtr *TypeInstPtr::NOTNULL; | |
| 3032 const TypeInstPtr *TypeInstPtr::BOTTOM; | |
| 3033 const TypeInstPtr *TypeInstPtr::MIRROR; | |
| 3034 const TypeInstPtr *TypeInstPtr::MARK; | |
| 3035 const TypeInstPtr *TypeInstPtr::KLASS; | |
| 3036 | |
| 3037 //------------------------------TypeInstPtr------------------------------------- | |
| 12966 | 3038 TypeInstPtr::TypeInstPtr(PTR ptr, ciKlass* k, bool xk, ciObject* o, int off, int instance_id, const TypeOopPtr* speculative) |
| 3039 : TypeOopPtr(InstPtr, ptr, k, xk, o, off, instance_id, speculative), _name(k->name()) { | |
| 0 | 3040 assert(k != NULL && |
| 3041 (k->is_loaded() || o == NULL), | |
| 3042 "cannot have constants with non-loaded klass"); | |
| 3043 }; | |
| 3044 | |
| 3045 //------------------------------make------------------------------------------- | |
| 3046 const TypeInstPtr *TypeInstPtr::make(PTR ptr, | |
| 3047 ciKlass* k, | |
| 3048 bool xk, | |
| 3049 ciObject* o, | |
| 3050 int offset, | |
| 12966 | 3051 int instance_id, |
| 3052 const TypeOopPtr* speculative) { | |
|
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3053 assert( !k->is_loaded() || k->is_instance_klass(), "Must be for instance"); |
| 0 | 3054 // Either const_oop() is NULL or else ptr is Constant |
| 3055 assert( (!o && ptr != Constant) || (o && ptr == Constant), | |
| 3056 "constant pointers must have a value supplied" ); | |
| 3057 // Ptr is never Null | |
| 3058 assert( ptr != Null, "NULL pointers are not typed" ); | |
| 3059 | |
| 247 | 3060 assert(instance_id <= 0 || xk || !UseExactTypes, "instances are always exactly typed"); |
| 0 | 3061 if (!UseExactTypes) xk = false; |
| 3062 if (ptr == Constant) { | |
| 3063 // Note: This case includes meta-object constants, such as methods. | |
| 3064 xk = true; | |
| 3065 } else if (k->is_loaded()) { | |
| 3066 ciInstanceKlass* ik = k->as_instance_klass(); | |
| 3067 if (!xk && ik->is_final()) xk = true; // no inexact final klass | |
| 3068 if (xk && ik->is_interface()) xk = false; // no exact interface | |
| 3069 } | |
| 3070 | |
| 3071 // Now hash this baby | |
| 3072 TypeInstPtr *result = | |
| 12966 | 3073 (TypeInstPtr*)(new TypeInstPtr(ptr, k, xk, o ,offset, instance_id, speculative))->hashcons(); |
| 0 | 3074 |
| 3075 return result; | |
| 3076 } | |
| 3077 | |
| 10278 | 3078 /** |
| 3079 * Create constant type for a constant boxed value | |
| 3080 */ | |
| 3081 const Type* TypeInstPtr::get_const_boxed_value() const { | |
| 3082 assert(is_ptr_to_boxed_value(), "should be called only for boxed value"); | |
| 3083 assert((const_oop() != NULL), "should be called only for constant object"); | |
| 3084 ciConstant constant = const_oop()->as_instance()->field_value_by_offset(offset()); | |
| 3085 BasicType bt = constant.basic_type(); | |
| 3086 switch (bt) { | |
| 3087 case T_BOOLEAN: return TypeInt::make(constant.as_boolean()); | |
| 3088 case T_INT: return TypeInt::make(constant.as_int()); | |
| 3089 case T_CHAR: return TypeInt::make(constant.as_char()); | |
| 3090 case T_BYTE: return TypeInt::make(constant.as_byte()); | |
| 3091 case T_SHORT: return TypeInt::make(constant.as_short()); | |
| 3092 case T_FLOAT: return TypeF::make(constant.as_float()); | |
| 3093 case T_DOUBLE: return TypeD::make(constant.as_double()); | |
| 3094 case T_LONG: return TypeLong::make(constant.as_long()); | |
| 3095 default: break; | |
| 3096 } | |
| 3097 fatal(err_msg_res("Invalid boxed value type '%s'", type2name(bt))); | |
| 3098 return NULL; | |
| 3099 } | |
| 0 | 3100 |
| 3101 //------------------------------cast_to_ptr_type------------------------------- | |
| 3102 const Type *TypeInstPtr::cast_to_ptr_type(PTR ptr) const { | |
| 3103 if( ptr == _ptr ) return this; | |
| 3104 // Reconstruct _sig info here since not a problem with later lazy | |
| 3105 // construction, _sig will show up on demand. | |
| 12966 | 3106 return make(ptr, klass(), klass_is_exact(), const_oop(), _offset, _instance_id, _speculative); |
| 0 | 3107 } |
| 3108 | |
| 3109 | |
| 3110 //-----------------------------cast_to_exactness------------------------------- | |
| 3111 const Type *TypeInstPtr::cast_to_exactness(bool klass_is_exact) const { | |
| 3112 if( klass_is_exact == _klass_is_exact ) return this; | |
| 3113 if (!UseExactTypes) return this; | |
| 3114 if (!_klass->is_loaded()) return this; | |
| 3115 ciInstanceKlass* ik = _klass->as_instance_klass(); | |
| 3116 if( (ik->is_final() || _const_oop) ) return this; // cannot clear xk | |
| 3117 if( ik->is_interface() ) return this; // cannot set xk | |
| 12966 | 3118 return make(ptr(), klass(), klass_is_exact, const_oop(), _offset, _instance_id, _speculative); |
| 0 | 3119 } |
| 3120 | |
| 247 | 3121 //-----------------------------cast_to_instance_id---------------------------- |
| 223 | 3122 const TypeOopPtr *TypeInstPtr::cast_to_instance_id(int instance_id) const { |
| 3123 if( instance_id == _instance_id ) return this; | |
| 12966 | 3124 return make(_ptr, klass(), _klass_is_exact, const_oop(), _offset, instance_id, _speculative); |
| 0 | 3125 } |
| 3126 | |
| 3127 //------------------------------xmeet_unloaded--------------------------------- | |
| 3128 // Compute the MEET of two InstPtrs when at least one is unloaded. | |
| 3129 // Assume classes are different since called after check for same name/class-loader | |
| 3130 const TypeInstPtr *TypeInstPtr::xmeet_unloaded(const TypeInstPtr *tinst) const { | |
| 3131 int off = meet_offset(tinst->offset()); | |
| 3132 PTR ptr = meet_ptr(tinst->ptr()); | |
| 992 | 3133 int instance_id = meet_instance_id(tinst->instance_id()); |
|
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3134 const TypeOopPtr* speculative = xmeet_speculative(tinst); |
| 0 | 3135 |
| 3136 const TypeInstPtr *loaded = is_loaded() ? this : tinst; | |
| 3137 const TypeInstPtr *unloaded = is_loaded() ? tinst : this; | |
| 3138 if( loaded->klass()->equals(ciEnv::current()->Object_klass()) ) { | |
| 3139 // | |
| 3140 // Meet unloaded class with java/lang/Object | |
| 3141 // | |
| 3142 // Meet | |
| 3143 // | Unloaded Class | |
| 3144 // Object | TOP | AnyNull | Constant | NotNull | BOTTOM | | |
| 3145 // =================================================================== | |
| 3146 // TOP | ..........................Unloaded......................| | |
| 3147 // AnyNull | U-AN |................Unloaded......................| | |
| 3148 // Constant | ... O-NN .................................. | O-BOT | | |
| 3149 // NotNull | ... O-NN .................................. | O-BOT | | |
| 3150 // BOTTOM | ........................Object-BOTTOM ..................| | |
| 3151 // | |
| 3152 assert(loaded->ptr() != TypePtr::Null, "insanity check"); | |
| 3153 // | |
| 3154 if( loaded->ptr() == TypePtr::TopPTR ) { return unloaded; } | |
| 12966 | 3155 else if (loaded->ptr() == TypePtr::AnyNull) { return TypeInstPtr::make(ptr, unloaded->klass(), false, NULL, off, instance_id, speculative); } |
| 0 | 3156 else if (loaded->ptr() == TypePtr::BotPTR ) { return TypeInstPtr::BOTTOM; } |
| 3157 else if (loaded->ptr() == TypePtr::Constant || loaded->ptr() == TypePtr::NotNull) { | |
| 3158 if (unloaded->ptr() == TypePtr::BotPTR ) { return TypeInstPtr::BOTTOM; } | |
| 3159 else { return TypeInstPtr::NOTNULL; } | |
| 3160 } | |
| 3161 else if( unloaded->ptr() == TypePtr::TopPTR ) { return unloaded; } | |
| 3162 | |
| 3163 return unloaded->cast_to_ptr_type(TypePtr::AnyNull)->is_instptr(); | |
| 3164 } | |
| 3165 | |
| 3166 // Both are unloaded, not the same class, not Object | |
| 3167 // Or meet unloaded with a different loaded class, not java/lang/Object | |
| 3168 if( ptr != TypePtr::BotPTR ) { | |
| 3169 return TypeInstPtr::NOTNULL; | |
| 3170 } | |
| 3171 return TypeInstPtr::BOTTOM; | |
| 3172 } | |
| 3173 | |
| 3174 | |
| 3175 //------------------------------meet------------------------------------------- | |
| 3176 // Compute the MEET of two types. It returns a new Type object. | |
| 12966 | 3177 const Type *TypeInstPtr::xmeet_helper(const Type *t) const { |
| 0 | 3178 // Perform a fast test for common case; meeting the same types together. |
| 3179 if( this == t ) return this; // Meeting same type-rep? | |
| 3180 | |
| 3181 // Current "this->_base" is Pointer | |
| 3182 switch (t->base()) { // switch on original type | |
| 3183 | |
| 3184 case Int: // Mixing ints & oops happens when javac | |
| 3185 case Long: // reuses local variables | |
| 3186 case FloatTop: | |
| 3187 case FloatCon: | |
| 3188 case FloatBot: | |
| 3189 case DoubleTop: | |
| 3190 case DoubleCon: | |
| 3191 case DoubleBot: | |
|
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3192 case NarrowOop: |
|
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3193 case NarrowKlass: |
| 0 | 3194 case Bottom: // Ye Olde Default |
| 3195 return Type::BOTTOM; | |
| 3196 case Top: | |
| 3197 return this; | |
| 3198 | |
| 3199 default: // All else is a mistake | |
| 3200 typerr(t); | |
| 3201 | |
|
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3202 case MetadataPtr: |
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3203 case KlassPtr: |
| 0 | 3204 case RawPtr: return TypePtr::BOTTOM; |
| 3205 | |
| 3206 case AryPtr: { // All arrays inherit from Object class | |
| 3207 const TypeAryPtr *tp = t->is_aryptr(); | |
| 3208 int offset = meet_offset(tp->offset()); | |
| 3209 PTR ptr = meet_ptr(tp->ptr()); | |
| 223 | 3210 int instance_id = meet_instance_id(tp->instance_id()); |
|
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3211 const TypeOopPtr* speculative = xmeet_speculative(tp); |
| 0 | 3212 switch (ptr) { |
| 3213 case TopPTR: | |
| 3214 case AnyNull: // Fall 'down' to dual of object klass | |
| 12966 | 3215 // For instances when a subclass meets a superclass we fall |
| 3216 // below the centerline when the superclass is exact. We need to | |
| 3217 // do the same here. | |
| 3218 if (klass()->equals(ciEnv::current()->Object_klass()) && !klass_is_exact()) { | |
| 3219 return TypeAryPtr::make(ptr, tp->ary(), tp->klass(), tp->klass_is_exact(), offset, instance_id, speculative); | |
| 0 | 3220 } else { |
| 3221 // cannot subclass, so the meet has to fall badly below the centerline | |
| 3222 ptr = NotNull; | |
| 223 | 3223 instance_id = InstanceBot; |
| 12966 | 3224 return TypeInstPtr::make( ptr, ciEnv::current()->Object_klass(), false, NULL, offset, instance_id, speculative); |
| 0 | 3225 } |
| 3226 case Constant: | |
| 3227 case NotNull: | |
| 3228 case BotPTR: // Fall down to object klass | |
| 3229 // LCA is object_klass, but if we subclass from the top we can do better | |
| 3230 if( above_centerline(_ptr) ) { // if( _ptr == TopPTR || _ptr == AnyNull ) | |
| 3231 // If 'this' (InstPtr) is above the centerline and it is Object class | |
| 605 | 3232 // then we can subclass in the Java class hierarchy. |
| 12966 | 3233 // For instances when a subclass meets a superclass we fall |
| 3234 // below the centerline when the superclass is exact. We need | |
| 3235 // to do the same here. | |
| 3236 if (klass()->equals(ciEnv::current()->Object_klass()) && !klass_is_exact()) { | |
| 0 | 3237 // that is, tp's array type is a subtype of my klass |
|
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|
3238 return TypeAryPtr::make(ptr, (ptr == Constant ? tp->const_oop() : NULL), |
| 12966 | 3239 tp->ary(), tp->klass(), tp->klass_is_exact(), offset, instance_id, speculative); |
| 0 | 3240 } |
| 3241 } | |
| 3242 // The other case cannot happen, since I cannot be a subtype of an array. | |
| 3243 // The meet falls down to Object class below centerline. | |
| 3244 if( ptr == Constant ) | |
| 3245 ptr = NotNull; | |
| 223 | 3246 instance_id = InstanceBot; |
| 12966 | 3247 return make(ptr, ciEnv::current()->Object_klass(), false, NULL, offset, instance_id, speculative); |
| 0 | 3248 default: typerr(t); |
| 3249 } | |
| 3250 } | |
| 3251 | |
| 3252 case OopPtr: { // Meeting to OopPtrs | |
| 3253 // Found a OopPtr type vs self-InstPtr type | |
|
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3254 const TypeOopPtr *tp = t->is_oopptr(); |
| 0 | 3255 int offset = meet_offset(tp->offset()); |
| 3256 PTR ptr = meet_ptr(tp->ptr()); | |
| 3257 switch (tp->ptr()) { | |
| 3258 case TopPTR: | |
| 223 | 3259 case AnyNull: { |
| 3260 int instance_id = meet_instance_id(InstanceTop); | |
|
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3261 const TypeOopPtr* speculative = xmeet_speculative(tp); |
| 0 | 3262 return make(ptr, klass(), klass_is_exact(), |
| 12966 | 3263 (ptr == Constant ? const_oop() : NULL), offset, instance_id, speculative); |
| 223 | 3264 } |
| 0 | 3265 case NotNull: |
|
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3266 case BotPTR: { |
|
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3267 int instance_id = meet_instance_id(tp->instance_id()); |
|
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3268 const TypeOopPtr* speculative = xmeet_speculative(tp); |
| 12966 | 3269 return TypeOopPtr::make(ptr, offset, instance_id, speculative); |
|
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|
3270 } |
| 0 | 3271 default: typerr(t); |
| 3272 } | |
| 3273 } | |
| 3274 | |
| 3275 case AnyPtr: { // Meeting to AnyPtrs | |
| 3276 // Found an AnyPtr type vs self-InstPtr type | |
| 3277 const TypePtr *tp = t->is_ptr(); | |
| 3278 int offset = meet_offset(tp->offset()); | |
| 3279 PTR ptr = meet_ptr(tp->ptr()); | |
| 3280 switch (tp->ptr()) { | |
| 3281 case Null: | |
| 12966 | 3282 if( ptr == Null ) return TypePtr::make(AnyPtr, ptr, offset); |
| 223 | 3283 // else fall through to AnyNull |
| 0 | 3284 case TopPTR: |
| 223 | 3285 case AnyNull: { |
| 3286 int instance_id = meet_instance_id(InstanceTop); | |
| 12966 | 3287 const TypeOopPtr* speculative = _speculative; |
| 3288 return make(ptr, klass(), klass_is_exact(), | |
| 3289 (ptr == Constant ? const_oop() : NULL), offset, instance_id, speculative); | |
| 223 | 3290 } |
| 0 | 3291 case NotNull: |
| 3292 case BotPTR: | |
| 12966 | 3293 return TypePtr::make(AnyPtr, ptr, offset); |
| 0 | 3294 default: typerr(t); |
| 3295 } | |
| 3296 } | |
| 3297 | |
| 3298 /* | |
| 3299 A-top } | |
| 3300 / | \ } Tops | |
| 3301 B-top A-any C-top } | |
| 3302 | / | \ | } Any-nulls | |
| 3303 B-any | C-any } | |
| 3304 | | | | |
| 3305 B-con A-con C-con } constants; not comparable across classes | |
| 3306 | | | | |
| 3307 B-not | C-not } | |
| 3308 | \ | / | } not-nulls | |
| 3309 B-bot A-not C-bot } | |
| 3310 \ | / } Bottoms | |
| 3311 A-bot } | |
| 3312 */ | |
| 3313 | |
| 3314 case InstPtr: { // Meeting 2 Oops? | |
| 3315 // Found an InstPtr sub-type vs self-InstPtr type | |
| 3316 const TypeInstPtr *tinst = t->is_instptr(); | |
| 3317 int off = meet_offset( tinst->offset() ); | |
| 3318 PTR ptr = meet_ptr( tinst->ptr() ); | |
| 223 | 3319 int instance_id = meet_instance_id(tinst->instance_id()); |
|
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3320 const TypeOopPtr* speculative = xmeet_speculative(tinst); |
| 0 | 3321 |
| 3322 // Check for easy case; klasses are equal (and perhaps not loaded!) | |
| 3323 // If we have constants, then we created oops so classes are loaded | |
| 3324 // and we can handle the constants further down. This case handles | |
| 3325 // both-not-loaded or both-loaded classes | |
| 3326 if (ptr != Constant && klass()->equals(tinst->klass()) && klass_is_exact() == tinst->klass_is_exact()) { | |
| 12966 | 3327 return make(ptr, klass(), klass_is_exact(), NULL, off, instance_id, speculative); |
| 0 | 3328 } |
| 3329 | |
| 3330 // Classes require inspection in the Java klass hierarchy. Must be loaded. | |
| 3331 ciKlass* tinst_klass = tinst->klass(); | |
| 3332 ciKlass* this_klass = this->klass(); | |
| 3333 bool tinst_xk = tinst->klass_is_exact(); | |
| 3334 bool this_xk = this->klass_is_exact(); | |
| 3335 if (!tinst_klass->is_loaded() || !this_klass->is_loaded() ) { | |
| 3336 // One of these classes has not been loaded | |
| 3337 const TypeInstPtr *unloaded_meet = xmeet_unloaded(tinst); | |
| 3338 #ifndef PRODUCT | |
| 3339 if( PrintOpto && Verbose ) { | |
| 3340 tty->print("meet of unloaded classes resulted in: "); unloaded_meet->dump(); tty->cr(); | |
| 3341 tty->print(" this == "); this->dump(); tty->cr(); | |
| 3342 tty->print(" tinst == "); tinst->dump(); tty->cr(); | |
| 3343 } | |
| 3344 #endif | |
| 3345 return unloaded_meet; | |
| 3346 } | |
| 3347 | |
| 3348 // Handle mixing oops and interfaces first. | |
| 12966 | 3349 if( this_klass->is_interface() && !(tinst_klass->is_interface() || |
| 3350 tinst_klass == ciEnv::current()->Object_klass())) { | |
| 0 | 3351 ciKlass *tmp = tinst_klass; // Swap interface around |
| 3352 tinst_klass = this_klass; | |
| 3353 this_klass = tmp; | |
| 3354 bool tmp2 = tinst_xk; | |
| 3355 tinst_xk = this_xk; | |
| 3356 this_xk = tmp2; | |
| 3357 } | |
| 3358 if (tinst_klass->is_interface() && | |
| 3359 !(this_klass->is_interface() || | |
| 3360 // Treat java/lang/Object as an honorary interface, | |
| 3361 // because we need a bottom for the interface hierarchy. | |
| 3362 this_klass == ciEnv::current()->Object_klass())) { | |
| 3363 // Oop meets interface! | |
| 3364 | |
| 3365 // See if the oop subtypes (implements) interface. | |
| 3366 ciKlass *k; | |
| 3367 bool xk; | |
| 3368 if( this_klass->is_subtype_of( tinst_klass ) ) { | |
| 3369 // Oop indeed subtypes. Now keep oop or interface depending | |
| 3370 // on whether we are both above the centerline or either is | |
| 3371 // below the centerline. If we are on the centerline | |
| 3372 // (e.g., Constant vs. AnyNull interface), use the constant. | |
| 3373 k = below_centerline(ptr) ? tinst_klass : this_klass; | |
| 3374 // If we are keeping this_klass, keep its exactness too. | |
| 3375 xk = below_centerline(ptr) ? tinst_xk : this_xk; | |
| 3376 } else { // Does not implement, fall to Object | |
| 3377 // Oop does not implement interface, so mixing falls to Object | |
| 3378 // just like the verifier does (if both are above the | |
| 3379 // centerline fall to interface) | |
| 3380 k = above_centerline(ptr) ? tinst_klass : ciEnv::current()->Object_klass(); | |
| 3381 xk = above_centerline(ptr) ? tinst_xk : false; | |
| 3382 // Watch out for Constant vs. AnyNull interface. | |
| 3383 if (ptr == Constant) ptr = NotNull; // forget it was a constant | |
| 247 | 3384 instance_id = InstanceBot; |
| 0 | 3385 } |
| 3386 ciObject* o = NULL; // the Constant value, if any | |
| 3387 if (ptr == Constant) { | |
| 3388 // Find out which constant. | |
| 3389 o = (this_klass == klass()) ? const_oop() : tinst->const_oop(); | |
| 3390 } | |
| 12966 | 3391 return make(ptr, k, xk, o, off, instance_id, speculative); |
| 0 | 3392 } |
| 3393 | |
| 3394 // Either oop vs oop or interface vs interface or interface vs Object | |
| 3395 | |
| 3396 // !!! Here's how the symmetry requirement breaks down into invariants: | |
| 3397 // If we split one up & one down AND they subtype, take the down man. | |
| 3398 // If we split one up & one down AND they do NOT subtype, "fall hard". | |
| 3399 // If both are up and they subtype, take the subtype class. | |
| 3400 // If both are up and they do NOT subtype, "fall hard". | |
| 3401 // If both are down and they subtype, take the supertype class. | |
| 3402 // If both are down and they do NOT subtype, "fall hard". | |
| 3403 // Constants treated as down. | |
| 3404 | |
| 3405 // Now, reorder the above list; observe that both-down+subtype is also | |
| 3406 // "fall hard"; "fall hard" becomes the default case: | |
| 3407 // If we split one up & one down AND they subtype, take the down man. | |
| 3408 // If both are up and they subtype, take the subtype class. | |
| 3409 | |
| 3410 // If both are down and they subtype, "fall hard". | |
| 3411 // If both are down and they do NOT subtype, "fall hard". | |
| 3412 // If both are up and they do NOT subtype, "fall hard". | |
| 3413 // If we split one up & one down AND they do NOT subtype, "fall hard". | |
| 3414 | |
| 3415 // If a proper subtype is exact, and we return it, we return it exactly. | |
| 3416 // If a proper supertype is exact, there can be no subtyping relationship! | |
| 3417 // If both types are equal to the subtype, exactness is and-ed below the | |
| 3418 // centerline and or-ed above it. (N.B. Constants are always exact.) | |
| 3419 | |
| 3420 // Check for subtyping: | |
| 3421 ciKlass *subtype = NULL; | |
| 3422 bool subtype_exact = false; | |
| 3423 if( tinst_klass->equals(this_klass) ) { | |
| 3424 subtype = this_klass; | |
| 3425 subtype_exact = below_centerline(ptr) ? (this_xk & tinst_xk) : (this_xk | tinst_xk); | |
| 3426 } else if( !tinst_xk && this_klass->is_subtype_of( tinst_klass ) ) { | |
| 3427 subtype = this_klass; // Pick subtyping class | |
| 3428 subtype_exact = this_xk; | |
| 3429 } else if( !this_xk && tinst_klass->is_subtype_of( this_klass ) ) { | |
| 3430 subtype = tinst_klass; // Pick subtyping class | |
| 3431 subtype_exact = tinst_xk; | |
| 3432 } | |
| 3433 | |
| 3434 if( subtype ) { | |
| 3435 if( above_centerline(ptr) ) { // both are up? | |
| 3436 this_klass = tinst_klass = subtype; | |
| 3437 this_xk = tinst_xk = subtype_exact; | |
| 3438 } else if( above_centerline(this ->_ptr) && !above_centerline(tinst->_ptr) ) { | |
| 3439 this_klass = tinst_klass; // tinst is down; keep down man | |
| 3440 this_xk = tinst_xk; | |
| 3441 } else if( above_centerline(tinst->_ptr) && !above_centerline(this ->_ptr) ) { | |
| 3442 tinst_klass = this_klass; // this is down; keep down man | |
| 3443 tinst_xk = this_xk; | |
| 3444 } else { | |
| 3445 this_xk = subtype_exact; // either they are equal, or we'll do an LCA | |
| 3446 } | |
| 3447 } | |
| 3448 | |
| 3449 // Check for classes now being equal | |
| 3450 if (tinst_klass->equals(this_klass)) { | |
| 3451 // If the klasses are equal, the constants may still differ. Fall to | |
| 3452 // NotNull if they do (neither constant is NULL; that is a special case | |
| 3453 // handled elsewhere). | |
| 3454 ciObject* o = NULL; // Assume not constant when done | |
| 3455 ciObject* this_oop = const_oop(); | |
| 3456 ciObject* tinst_oop = tinst->const_oop(); | |
| 3457 if( ptr == Constant ) { | |
| 3458 if (this_oop != NULL && tinst_oop != NULL && | |
| 3459 this_oop->equals(tinst_oop) ) | |
| 3460 o = this_oop; | |
| 3461 else if (above_centerline(this ->_ptr)) | |
| 3462 o = tinst_oop; | |
| 3463 else if (above_centerline(tinst ->_ptr)) | |
| 3464 o = this_oop; | |
| 3465 else | |
| 3466 ptr = NotNull; | |
| 3467 } | |
| 12966 | 3468 return make(ptr, this_klass, this_xk, o, off, instance_id, speculative); |
| 0 | 3469 } // Else classes are not equal |
| 3470 | |
| 3471 // Since klasses are different, we require a LCA in the Java | |
| 3472 // class hierarchy - which means we have to fall to at least NotNull. | |
| 3473 if( ptr == TopPTR || ptr == AnyNull || ptr == Constant ) | |
| 3474 ptr = NotNull; | |
| 247 | 3475 instance_id = InstanceBot; |
| 0 | 3476 |
| 3477 // Now we find the LCA of Java classes | |
| 3478 ciKlass* k = this_klass->least_common_ancestor(tinst_klass); | |
| 12966 | 3479 return make(ptr, k, false, NULL, off, instance_id, speculative); |
| 0 | 3480 } // End of case InstPtr |
| 3481 | |
| 3482 } // End of switch | |
| 3483 return this; // Return the double constant | |
| 3484 } | |
| 3485 | |
| 3486 | |
| 3487 //------------------------java_mirror_type-------------------------------------- | |
| 3488 ciType* TypeInstPtr::java_mirror_type() const { | |
| 3489 // must be a singleton type | |
| 3490 if( const_oop() == NULL ) return NULL; | |
| 3491 | |
| 3492 // must be of type java.lang.Class | |
| 3493 if( klass() != ciEnv::current()->Class_klass() ) return NULL; | |
| 3494 | |
| 3495 return const_oop()->as_instance()->java_mirror_type(); | |
| 3496 } | |
| 3497 | |
| 3498 | |
| 3499 //------------------------------xdual------------------------------------------ | |
| 3500 // Dual: do NOT dual on klasses. This means I do NOT understand the Java | |
| 605 | 3501 // inheritance mechanism. |
| 0 | 3502 const Type *TypeInstPtr::xdual() const { |
| 12966 | 3503 return new TypeInstPtr(dual_ptr(), klass(), klass_is_exact(), const_oop(), dual_offset(), dual_instance_id(), dual_speculative()); |
| 0 | 3504 } |
| 3505 | |
| 3506 //------------------------------eq--------------------------------------------- | |
| 3507 // Structural equality check for Type representations | |
| 3508 bool TypeInstPtr::eq( const Type *t ) const { | |
| 3509 const TypeInstPtr *p = t->is_instptr(); | |
| 3510 return | |
| 3511 klass()->equals(p->klass()) && | |
| 3512 TypeOopPtr::eq(p); // Check sub-type stuff | |
| 3513 } | |
| 3514 | |
| 3515 //------------------------------hash------------------------------------------- | |
| 3516 // Type-specific hashing function. | |
| 3517 int TypeInstPtr::hash(void) const { | |
| 3518 int hash = klass()->hash() + TypeOopPtr::hash(); | |
| 3519 return hash; | |
| 3520 } | |
| 3521 | |
| 3522 //------------------------------dump2------------------------------------------ | |
| 3523 // Dump oop Type | |
| 3524 #ifndef PRODUCT | |
| 3525 void TypeInstPtr::dump2( Dict &d, uint depth, outputStream *st ) const { | |
| 3526 // Print the name of the klass. | |
| 3527 klass()->print_name_on(st); | |
| 3528 | |
| 3529 switch( _ptr ) { | |
| 3530 case Constant: | |
| 3531 // TO DO: Make CI print the hex address of the underlying oop. | |
| 3532 if (WizardMode || Verbose) { | |
| 3533 const_oop()->print_oop(st); | |
| 3534 } | |
| 3535 case BotPTR: | |
| 3536 if (!WizardMode && !Verbose) { | |
| 3537 if( _klass_is_exact ) st->print(":exact"); | |
| 3538 break; | |
| 3539 } | |
| 3540 case TopPTR: | |
| 3541 case AnyNull: | |
| 3542 case NotNull: | |
| 3543 st->print(":%s", ptr_msg[_ptr]); | |
| 3544 if( _klass_is_exact ) st->print(":exact"); | |
| 3545 break; | |
| 3546 } | |
| 3547 | |
| 3548 if( _offset ) { // Dump offset, if any | |
| 3549 if( _offset == OffsetBot ) st->print("+any"); | |
| 3550 else if( _offset == OffsetTop ) st->print("+unknown"); | |
| 3551 else st->print("+%d", _offset); | |
| 3552 } | |
| 3553 | |
| 3554 st->print(" *"); | |
| 223 | 3555 if (_instance_id == InstanceTop) |
| 3556 st->print(",iid=top"); | |
| 3557 else if (_instance_id != InstanceBot) | |
| 0 | 3558 st->print(",iid=%d",_instance_id); |
| 12966 | 3559 |
| 3560 dump_speculative(st); | |
| 0 | 3561 } |
| 3562 #endif | |
| 3563 | |
| 3564 //------------------------------add_offset------------------------------------- | |
| 12966 | 3565 const TypePtr *TypeInstPtr::add_offset(intptr_t offset) const { |
| 3566 return make(_ptr, klass(), klass_is_exact(), const_oop(), xadd_offset(offset), _instance_id, add_offset_speculative(offset)); | |
| 3567 } | |
| 3568 | |
|
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|
3569 const Type *TypeInstPtr::remove_speculative() const { |
|
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|
3570 if (_speculative == NULL) { |
|
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|
3571 return this; |
|
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|
3572 } |
| 12966 | 3573 return make(_ptr, klass(), klass_is_exact(), const_oop(), _offset, _instance_id, NULL); |
| 0 | 3574 } |
| 3575 | |
| 3576 //============================================================================= | |
| 3577 // Convenience common pre-built types. | |
| 3578 const TypeAryPtr *TypeAryPtr::RANGE; | |
| 3579 const TypeAryPtr *TypeAryPtr::OOPS; | |
| 163 | 3580 const TypeAryPtr *TypeAryPtr::NARROWOOPS; |
| 0 | 3581 const TypeAryPtr *TypeAryPtr::BYTES; |
| 3582 const TypeAryPtr *TypeAryPtr::SHORTS; | |
| 3583 const TypeAryPtr *TypeAryPtr::CHARS; | |
| 3584 const TypeAryPtr *TypeAryPtr::INTS; | |
| 3585 const TypeAryPtr *TypeAryPtr::LONGS; | |
| 3586 const TypeAryPtr *TypeAryPtr::FLOATS; | |
| 3587 const TypeAryPtr *TypeAryPtr::DOUBLES; | |
| 3588 | |
| 3589 //------------------------------make------------------------------------------- | |
| 12966 | 3590 const TypeAryPtr *TypeAryPtr::make(PTR ptr, const TypeAry *ary, ciKlass* k, bool xk, int offset, int instance_id, const TypeOopPtr* speculative) { |
| 0 | 3591 assert(!(k == NULL && ary->_elem->isa_int()), |
| 3592 "integral arrays must be pre-equipped with a class"); | |
| 3593 if (!xk) xk = ary->ary_must_be_exact(); | |
| 247 | 3594 assert(instance_id <= 0 || xk || !UseExactTypes, "instances are always exactly typed"); |
| 0 | 3595 if (!UseExactTypes) xk = (ptr == Constant); |
| 12966 | 3596 return (TypeAryPtr*)(new TypeAryPtr(ptr, NULL, ary, k, xk, offset, instance_id, false, speculative))->hashcons(); |
| 0 | 3597 } |
| 3598 | |
| 3599 //------------------------------make------------------------------------------- | |
| 12966 | 3600 const TypeAryPtr *TypeAryPtr::make(PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk, int offset, int instance_id, const TypeOopPtr* speculative, bool is_autobox_cache) { |
| 0 | 3601 assert(!(k == NULL && ary->_elem->isa_int()), |
| 3602 "integral arrays must be pre-equipped with a class"); | |
| 3603 assert( (ptr==Constant && o) || (ptr!=Constant && !o), "" ); | |
| 3604 if (!xk) xk = (o != NULL) || ary->ary_must_be_exact(); | |
| 247 | 3605 assert(instance_id <= 0 || xk || !UseExactTypes, "instances are always exactly typed"); |
| 0 | 3606 if (!UseExactTypes) xk = (ptr == Constant); |
| 12966 | 3607 return (TypeAryPtr*)(new TypeAryPtr(ptr, o, ary, k, xk, offset, instance_id, is_autobox_cache, speculative))->hashcons(); |
| 0 | 3608 } |
| 3609 | |
| 3610 //------------------------------cast_to_ptr_type------------------------------- | |
| 3611 const Type *TypeAryPtr::cast_to_ptr_type(PTR ptr) const { | |
| 3612 if( ptr == _ptr ) return this; | |
| 12966 | 3613 return make(ptr, const_oop(), _ary, klass(), klass_is_exact(), _offset, _instance_id, _speculative); |
| 0 | 3614 } |
| 3615 | |
| 3616 | |
| 3617 //-----------------------------cast_to_exactness------------------------------- | |
| 3618 const Type *TypeAryPtr::cast_to_exactness(bool klass_is_exact) const { | |
| 3619 if( klass_is_exact == _klass_is_exact ) return this; | |
| 3620 if (!UseExactTypes) return this; | |
| 3621 if (_ary->ary_must_be_exact()) return this; // cannot clear xk | |
| 12966 | 3622 return make(ptr(), const_oop(), _ary, klass(), klass_is_exact, _offset, _instance_id, _speculative); |
| 0 | 3623 } |
| 3624 | |
| 247 | 3625 //-----------------------------cast_to_instance_id---------------------------- |
| 223 | 3626 const TypeOopPtr *TypeAryPtr::cast_to_instance_id(int instance_id) const { |
| 3627 if( instance_id == _instance_id ) return this; | |
| 12966 | 3628 return make(_ptr, const_oop(), _ary, klass(), _klass_is_exact, _offset, instance_id, _speculative); |
| 0 | 3629 } |
| 3630 | |
| 3631 //-----------------------------narrow_size_type------------------------------- | |
| 3632 // Local cache for arrayOopDesc::max_array_length(etype), | |
| 3633 // which is kind of slow (and cached elsewhere by other users). | |
| 3634 static jint max_array_length_cache[T_CONFLICT+1]; | |
| 3635 static jint max_array_length(BasicType etype) { | |
| 3636 jint& cache = max_array_length_cache[etype]; | |
| 3637 jint res = cache; | |
| 3638 if (res == 0) { | |
| 3639 switch (etype) { | |
|
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|
3640 case T_NARROWOOP: |
|
ba764ed4b6f2
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64
diff
changeset
|
3641 etype = T_OBJECT; |
|
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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diff
changeset
|
3642 break; |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
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6735
diff
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|
3643 case T_NARROWKLASS: |
| 0 | 3644 case T_CONFLICT: |
| 3645 case T_ILLEGAL: | |
| 3646 case T_VOID: | |
| 3647 etype = T_BYTE; // will produce conservatively high value | |
| 3648 } | |
| 3649 cache = res = arrayOopDesc::max_array_length(etype); | |
| 3650 } | |
| 3651 return res; | |
| 3652 } | |
| 3653 | |
| 3654 // Narrow the given size type to the index range for the given array base type. | |
| 3655 // Return NULL if the resulting int type becomes empty. | |
|
366
8261ee795323
6711100: 64bit fastdebug server vm crashes with assert(_base == Int,"Not an Int")
rasbold
parents:
306
diff
changeset
|
3656 const TypeInt* TypeAryPtr::narrow_size_type(const TypeInt* size) const { |
| 0 | 3657 jint hi = size->_hi; |
| 3658 jint lo = size->_lo; | |
| 3659 jint min_lo = 0; | |
|
366
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306
diff
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|
3660 jint max_hi = max_array_length(elem()->basic_type()); |
| 0 | 3661 //if (index_not_size) --max_hi; // type of a valid array index, FTR |
| 3662 bool chg = false; | |
| 10278 | 3663 if (lo < min_lo) { |
| 3664 lo = min_lo; | |
| 3665 if (size->is_con()) { | |
| 3666 hi = lo; | |
| 3667 } | |
| 3668 chg = true; | |
| 3669 } | |
| 3670 if (hi > max_hi) { | |
| 3671 hi = max_hi; | |
| 3672 if (size->is_con()) { | |
| 3673 lo = hi; | |
| 3674 } | |
| 3675 chg = true; | |
| 3676 } | |
| 605 | 3677 // Negative length arrays will produce weird intermediate dead fast-path code |
| 0 | 3678 if (lo > hi) |
|
366
8261ee795323
6711100: 64bit fastdebug server vm crashes with assert(_base == Int,"Not an Int")
rasbold
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306
diff
changeset
|
3679 return TypeInt::ZERO; |
| 0 | 3680 if (!chg) |
| 3681 return size; | |
| 3682 return TypeInt::make(lo, hi, Type::WidenMin); | |
| 3683 } | |
| 3684 | |
| 3685 //-------------------------------cast_to_size---------------------------------- | |
| 3686 const TypeAryPtr* TypeAryPtr::cast_to_size(const TypeInt* new_size) const { | |
| 3687 assert(new_size != NULL, ""); | |
|
366
8261ee795323
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rasbold
parents:
306
diff
changeset
|
3688 new_size = narrow_size_type(new_size); |
| 0 | 3689 if (new_size == size()) return this; |
|
12190
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8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
10278
diff
changeset
|
3690 const TypeAry* new_ary = TypeAry::make(elem(), new_size, is_stable()); |
| 12966 | 3691 return make(ptr(), const_oop(), new_ary, klass(), klass_is_exact(), _offset, _instance_id, _speculative); |
| 0 | 3692 } |
| 3693 | |
| 3694 | |
|
12190
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10278
diff
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|
3695 //------------------------------cast_to_stable--------------------------------- |
|
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8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
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10278
diff
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|
3696 const TypeAryPtr* TypeAryPtr::cast_to_stable(bool stable, int stable_dimension) const { |
|
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
10278
diff
changeset
|
3697 if (stable_dimension <= 0 || (stable_dimension == 1 && stable == this->is_stable())) |
|
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
10278
diff
changeset
|
3698 return this; |
|
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
10278
diff
changeset
|
3699 |
|
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
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10278
diff
changeset
|
3700 const Type* elem = this->elem(); |
|
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
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10278
diff
changeset
|
3701 const TypePtr* elem_ptr = elem->make_ptr(); |
|
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
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10278
diff
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|
3702 |
|
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
10278
diff
changeset
|
3703 if (stable_dimension > 1 && elem_ptr != NULL && elem_ptr->isa_aryptr()) { |
|
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
10278
diff
changeset
|
3704 // If this is widened from a narrow oop, TypeAry::make will re-narrow it. |
|
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
10278
diff
changeset
|
3705 elem = elem_ptr = elem_ptr->is_aryptr()->cast_to_stable(stable, stable_dimension - 1); |
|
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
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10278
diff
changeset
|
3706 } |
|
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
10278
diff
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|
3707 |
|
edb5ab0f3fe5
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10278
diff
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|
3708 const TypeAry* new_ary = TypeAry::make(elem, size(), stable); |
|
edb5ab0f3fe5
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|
3709 |
|
edb5ab0f3fe5
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vlivanov
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10278
diff
changeset
|
3710 return make(ptr(), const_oop(), new_ary, klass(), klass_is_exact(), _offset, _instance_id); |
|
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diff
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|
3711 } |
|
edb5ab0f3fe5
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diff
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|
3712 |
|
edb5ab0f3fe5
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diff
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|
3713 //-----------------------------stable_dimension-------------------------------- |
|
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
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diff
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|
3714 int TypeAryPtr::stable_dimension() const { |
|
edb5ab0f3fe5
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vlivanov
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diff
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|
3715 if (!is_stable()) return 0; |
|
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
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10278
diff
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|
3716 int dim = 1; |
|
edb5ab0f3fe5
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vlivanov
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diff
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|
3717 const TypePtr* elem_ptr = elem()->make_ptr(); |
|
edb5ab0f3fe5
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diff
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|
3718 if (elem_ptr != NULL && elem_ptr->isa_aryptr()) |
|
edb5ab0f3fe5
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10278
diff
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|
3719 dim += elem_ptr->is_aryptr()->stable_dimension(); |
|
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
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10278
diff
changeset
|
3720 return dim; |
|
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
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10278
diff
changeset
|
3721 } |
|
edb5ab0f3fe5
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10278
diff
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|
3722 |
| 0 | 3723 //------------------------------eq--------------------------------------------- |
| 3724 // Structural equality check for Type representations | |
| 3725 bool TypeAryPtr::eq( const Type *t ) const { | |
| 3726 const TypeAryPtr *p = t->is_aryptr(); | |
| 3727 return | |
| 3728 _ary == p->_ary && // Check array | |
| 3729 TypeOopPtr::eq(p); // Check sub-parts | |
| 3730 } | |
| 3731 | |
| 3732 //------------------------------hash------------------------------------------- | |
| 3733 // Type-specific hashing function. | |
| 3734 int TypeAryPtr::hash(void) const { | |
| 3735 return (intptr_t)_ary + TypeOopPtr::hash(); | |
| 3736 } | |
| 3737 | |
| 3738 //------------------------------meet------------------------------------------- | |
| 3739 // Compute the MEET of two types. It returns a new Type object. | |
| 12966 | 3740 const Type *TypeAryPtr::xmeet_helper(const Type *t) const { |
| 0 | 3741 // Perform a fast test for common case; meeting the same types together. |
| 3742 if( this == t ) return this; // Meeting same type-rep? | |
| 3743 // Current "this->_base" is Pointer | |
| 3744 switch (t->base()) { // switch on original type | |
| 3745 | |
| 3746 // Mixing ints & oops happens when javac reuses local variables | |
| 3747 case Int: | |
| 3748 case Long: | |
| 3749 case FloatTop: | |
| 3750 case FloatCon: | |
| 3751 case FloatBot: | |
| 3752 case DoubleTop: | |
| 3753 case DoubleCon: | |
| 3754 case DoubleBot: | |
|
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|
3755 case NarrowOop: |
|
6848
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6735
diff
changeset
|
3756 case NarrowKlass: |
| 0 | 3757 case Bottom: // Ye Olde Default |
| 3758 return Type::BOTTOM; | |
| 3759 case Top: | |
| 3760 return this; | |
| 3761 | |
| 3762 default: // All else is a mistake | |
| 3763 typerr(t); | |
| 3764 | |
| 3765 case OopPtr: { // Meeting to OopPtrs | |
| 3766 // Found a OopPtr type vs self-AryPtr type | |
|
958
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6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
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827
diff
changeset
|
3767 const TypeOopPtr *tp = t->is_oopptr(); |
| 0 | 3768 int offset = meet_offset(tp->offset()); |
| 3769 PTR ptr = meet_ptr(tp->ptr()); | |
| 3770 switch (tp->ptr()) { | |
| 3771 case TopPTR: | |
| 223 | 3772 case AnyNull: { |
| 3773 int instance_id = meet_instance_id(InstanceTop); | |
|
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diff
changeset
|
3774 const TypeOopPtr* speculative = xmeet_speculative(tp); |
| 223 | 3775 return make(ptr, (ptr == Constant ? const_oop() : NULL), |
| 12966 | 3776 _ary, _klass, _klass_is_exact, offset, instance_id, speculative); |
| 223 | 3777 } |
| 0 | 3778 case BotPTR: |
|
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
827
diff
changeset
|
3779 case NotNull: { |
|
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
827
diff
changeset
|
3780 int instance_id = meet_instance_id(tp->instance_id()); |
|
14383
5ec7dace41a6
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents:
14228
diff
changeset
|
3781 const TypeOopPtr* speculative = xmeet_speculative(tp); |
| 12966 | 3782 return TypeOopPtr::make(ptr, offset, instance_id, speculative); |
|
958
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6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
827
diff
changeset
|
3783 } |
| 0 | 3784 default: ShouldNotReachHere(); |
| 3785 } | |
| 3786 } | |
| 3787 | |
| 3788 case AnyPtr: { // Meeting two AnyPtrs | |
| 3789 // Found an AnyPtr type vs self-AryPtr type | |
| 3790 const TypePtr *tp = t->is_ptr(); | |
| 3791 int offset = meet_offset(tp->offset()); | |
| 3792 PTR ptr = meet_ptr(tp->ptr()); | |
| 3793 switch (tp->ptr()) { | |
| 3794 case TopPTR: | |
| 3795 return this; | |
| 3796 case BotPTR: | |
| 3797 case NotNull: | |
| 3798 return TypePtr::make(AnyPtr, ptr, offset); | |
| 3799 case Null: | |
| 3800 if( ptr == Null ) return TypePtr::make(AnyPtr, ptr, offset); | |
| 223 | 3801 // else fall through to AnyNull |
| 3802 case AnyNull: { | |
| 3803 int instance_id = meet_instance_id(InstanceTop); | |
| 12966 | 3804 const TypeOopPtr* speculative = _speculative; |
| 3805 return make(ptr, (ptr == Constant ? const_oop() : NULL), | |
| 3806 _ary, _klass, _klass_is_exact, offset, instance_id, speculative); | |
| 223 | 3807 } |
| 0 | 3808 default: ShouldNotReachHere(); |
| 3809 } | |
| 3810 } | |
| 3811 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3812 case MetadataPtr: |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6198
diff
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|
3813 case KlassPtr: |
| 0 | 3814 case RawPtr: return TypePtr::BOTTOM; |
| 3815 | |
| 3816 case AryPtr: { // Meeting 2 references? | |
| 3817 const TypeAryPtr *tap = t->is_aryptr(); | |
| 3818 int off = meet_offset(tap->offset()); | |
|
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5ec7dace41a6
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roland
parents:
14228
diff
changeset
|
3819 const TypeAry *tary = _ary->meet_speculative(tap->_ary)->is_ary(); |
| 0 | 3820 PTR ptr = meet_ptr(tap->ptr()); |
| 223 | 3821 int instance_id = meet_instance_id(tap->instance_id()); |
|
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14228
diff
changeset
|
3822 const TypeOopPtr* speculative = xmeet_speculative(tap); |
| 0 | 3823 ciKlass* lazy_klass = NULL; |
| 3824 if (tary->_elem->isa_int()) { | |
| 3825 // Integral array element types have irrelevant lattice relations. | |
| 3826 // It is the klass that determines array layout, not the element type. | |
| 3827 if (_klass == NULL) | |
| 3828 lazy_klass = tap->_klass; | |
| 3829 else if (tap->_klass == NULL || tap->_klass == _klass) { | |
| 3830 lazy_klass = _klass; | |
| 3831 } else { | |
| 3832 // Something like byte[int+] meets char[int+]. | |
| 3833 // This must fall to bottom, not (int[-128..65535])[int+]. | |
| 247 | 3834 instance_id = InstanceBot; |
|
12190
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8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
10278
diff
changeset
|
3835 tary = TypeAry::make(Type::BOTTOM, tary->_size, tary->_stable); |
| 0 | 3836 } |
| 2351 | 3837 } else // Non integral arrays. |
| 14228 | 3838 // Must fall to bottom if exact klasses in upper lattice |
| 3839 // are not equal or super klass is exact. | |
| 3840 if ((above_centerline(ptr) || ptr == Constant) && klass() != tap->klass() && | |
| 3841 // meet with top[] and bottom[] are processed further down: | |
| 3842 tap->_klass != NULL && this->_klass != NULL && | |
| 3843 // both are exact and not equal: | |
| 3844 ((tap->_klass_is_exact && this->_klass_is_exact) || | |
| 3845 // 'tap' is exact and super or unrelated: | |
| 3846 (tap->_klass_is_exact && !tap->klass()->is_subtype_of(klass())) || | |
| 3847 // 'this' is exact and super or unrelated: | |
| 3848 (this->_klass_is_exact && !klass()->is_subtype_of(tap->klass())))) { | |
|
12190
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8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
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10278
diff
changeset
|
3849 tary = TypeAry::make(Type::BOTTOM, tary->_size, tary->_stable); |
| 12966 | 3850 return make(NotNull, NULL, tary, lazy_klass, false, off, InstanceBot); |
| 0 | 3851 } |
| 2351 | 3852 |
|
1765
114e6b93e9e1
6980978: assert(mt == t->xmeet(this)) failed: meet not commutative
kvn
parents:
1761
diff
changeset
|
3853 bool xk = false; |
| 0 | 3854 switch (tap->ptr()) { |
| 3855 case AnyNull: | |
| 3856 case TopPTR: | |
| 3857 // Compute new klass on demand, do not use tap->_klass | |
| 12966 | 3858 if (below_centerline(this->_ptr)) { |
| 3859 xk = this->_klass_is_exact; | |
| 3860 } else { | |
| 3861 xk = (tap->_klass_is_exact | this->_klass_is_exact); | |
| 3862 } | |
| 3863 return make(ptr, const_oop(), tary, lazy_klass, xk, off, instance_id, speculative); | |
| 0 | 3864 case Constant: { |
| 3865 ciObject* o = const_oop(); | |
| 3866 if( _ptr == Constant ) { | |
| 3867 if( tap->const_oop() != NULL && !o->equals(tap->const_oop()) ) { | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
958
diff
changeset
|
3868 xk = (klass() == tap->klass()); |
| 0 | 3869 ptr = NotNull; |
| 3870 o = NULL; | |
| 247 | 3871 instance_id = InstanceBot; |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
958
diff
changeset
|
3872 } else { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
958
diff
changeset
|
3873 xk = true; |
| 0 | 3874 } |
| 12966 | 3875 } else if(above_centerline(_ptr)) { |
| 0 | 3876 o = tap->const_oop(); |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
958
diff
changeset
|
3877 xk = true; |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
958
diff
changeset
|
3878 } else { |
|
1765
114e6b93e9e1
6980978: assert(mt == t->xmeet(this)) failed: meet not commutative
kvn
parents:
1761
diff
changeset
|
3879 // Only precise for identical arrays |
|
114e6b93e9e1
6980978: assert(mt == t->xmeet(this)) failed: meet not commutative
kvn
parents:
1761
diff
changeset
|
3880 xk = this->_klass_is_exact && (klass() == tap->klass()); |
| 0 | 3881 } |
| 12966 | 3882 return TypeAryPtr::make(ptr, o, tary, lazy_klass, xk, off, instance_id, speculative); |
| 0 | 3883 } |
| 3884 case NotNull: | |
| 3885 case BotPTR: | |
| 3886 // Compute new klass on demand, do not use tap->_klass | |
| 3887 if (above_centerline(this->_ptr)) | |
| 3888 xk = tap->_klass_is_exact; | |
| 3889 else xk = (tap->_klass_is_exact & this->_klass_is_exact) && | |
| 3890 (klass() == tap->klass()); // Only precise for identical arrays | |
| 12966 | 3891 return TypeAryPtr::make(ptr, NULL, tary, lazy_klass, xk, off, instance_id, speculative); |
| 0 | 3892 default: ShouldNotReachHere(); |
| 3893 } | |
| 3894 } | |
| 3895 | |
| 3896 // All arrays inherit from Object class | |
| 3897 case InstPtr: { | |
| 3898 const TypeInstPtr *tp = t->is_instptr(); | |
| 3899 int offset = meet_offset(tp->offset()); | |
| 3900 PTR ptr = meet_ptr(tp->ptr()); | |
| 223 | 3901 int instance_id = meet_instance_id(tp->instance_id()); |
|
14383
5ec7dace41a6
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents:
14228
diff
changeset
|
3902 const TypeOopPtr* speculative = xmeet_speculative(tp); |
| 0 | 3903 switch (ptr) { |
| 3904 case TopPTR: | |
| 3905 case AnyNull: // Fall 'down' to dual of object klass | |
| 12966 | 3906 // For instances when a subclass meets a superclass we fall |
| 3907 // below the centerline when the superclass is exact. We need to | |
| 3908 // do the same here. | |
| 3909 if (tp->klass()->equals(ciEnv::current()->Object_klass()) && !tp->klass_is_exact()) { | |
| 3910 return TypeAryPtr::make(ptr, _ary, _klass, _klass_is_exact, offset, instance_id, speculative); | |
| 0 | 3911 } else { |
| 3912 // cannot subclass, so the meet has to fall badly below the centerline | |
| 3913 ptr = NotNull; | |
| 223 | 3914 instance_id = InstanceBot; |
| 12966 | 3915 return TypeInstPtr::make(ptr, ciEnv::current()->Object_klass(), false, NULL,offset, instance_id, speculative); |
| 0 | 3916 } |
| 3917 case Constant: | |
| 3918 case NotNull: | |
| 3919 case BotPTR: // Fall down to object klass | |
| 3920 // LCA is object_klass, but if we subclass from the top we can do better | |
| 3921 if (above_centerline(tp->ptr())) { | |
| 3922 // If 'tp' is above the centerline and it is Object class | |
| 605 | 3923 // then we can subclass in the Java class hierarchy. |
| 12966 | 3924 // For instances when a subclass meets a superclass we fall |
| 3925 // below the centerline when the superclass is exact. We need | |
| 3926 // to do the same here. | |
| 3927 if (tp->klass()->equals(ciEnv::current()->Object_klass()) && !tp->klass_is_exact()) { | |
| 0 | 3928 // that is, my array type is a subtype of 'tp' klass |
| 12966 | 3929 return make(ptr, (ptr == Constant ? const_oop() : NULL), |
| 3930 _ary, _klass, _klass_is_exact, offset, instance_id, speculative); | |
| 0 | 3931 } |
| 3932 } | |
| 3933 // The other case cannot happen, since t cannot be a subtype of an array. | |
| 3934 // The meet falls down to Object class below centerline. | |
| 3935 if( ptr == Constant ) | |
| 3936 ptr = NotNull; | |
| 223 | 3937 instance_id = InstanceBot; |
| 12966 | 3938 return TypeInstPtr::make(ptr, ciEnv::current()->Object_klass(), false, NULL,offset, instance_id, speculative); |
| 0 | 3939 default: typerr(t); |
| 3940 } | |
| 3941 } | |
| 3942 } | |
| 3943 return this; // Lint noise | |
| 3944 } | |
| 3945 | |
| 3946 //------------------------------xdual------------------------------------------ | |
| 3947 // Dual: compute field-by-field dual | |
| 3948 const Type *TypeAryPtr::xdual() const { | |
| 12966 | 3949 return new TypeAryPtr(dual_ptr(), _const_oop, _ary->dual()->is_ary(),_klass, _klass_is_exact, dual_offset(), dual_instance_id(), is_autobox_cache(), dual_speculative()); |
| 0 | 3950 } |
| 3951 | |
|
820
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
3952 //----------------------interface_vs_oop--------------------------------------- |
|
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
3953 #ifdef ASSERT |
|
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
3954 bool TypeAryPtr::interface_vs_oop(const Type *t) const { |
|
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
3955 const TypeAryPtr* t_aryptr = t->isa_aryptr(); |
|
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
3956 if (t_aryptr) { |
|
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
3957 return _ary->interface_vs_oop(t_aryptr->_ary); |
|
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
3958 } |
|
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
3959 return false; |
|
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
3960 } |
|
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
3961 #endif |
|
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
3962 |
| 0 | 3963 //------------------------------dump2------------------------------------------ |
| 3964 #ifndef PRODUCT | |
| 3965 void TypeAryPtr::dump2( Dict &d, uint depth, outputStream *st ) const { | |
| 3966 _ary->dump2(d,depth,st); | |
| 3967 switch( _ptr ) { | |
| 3968 case Constant: | |
| 3969 const_oop()->print(st); | |
| 3970 break; | |
| 3971 case BotPTR: | |
| 3972 if (!WizardMode && !Verbose) { | |
| 3973 if( _klass_is_exact ) st->print(":exact"); | |
| 3974 break; | |
| 3975 } | |
| 3976 case TopPTR: | |
| 3977 case AnyNull: | |
| 3978 case NotNull: | |
| 3979 st->print(":%s", ptr_msg[_ptr]); | |
| 3980 if( _klass_is_exact ) st->print(":exact"); | |
| 3981 break; | |
| 3982 } | |
| 3983 | |
|
64
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
3984 if( _offset != 0 ) { |
|
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
3985 int header_size = objArrayOopDesc::header_size() * wordSize; |
|
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
3986 if( _offset == OffsetTop ) st->print("+undefined"); |
|
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
3987 else if( _offset == OffsetBot ) st->print("+any"); |
|
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
3988 else if( _offset < header_size ) st->print("+%d", _offset); |
|
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
3989 else { |
|
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
3990 BasicType basic_elem_type = elem()->basic_type(); |
|
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
3991 int array_base = arrayOopDesc::base_offset_in_bytes(basic_elem_type); |
|
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
3992 int elem_size = type2aelembytes(basic_elem_type); |
|
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
3993 st->print("[%d]", (_offset - array_base)/elem_size); |
|
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
3994 } |
|
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
3995 } |
|
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
3996 st->print(" *"); |
| 223 | 3997 if (_instance_id == InstanceTop) |
| 3998 st->print(",iid=top"); | |
| 3999 else if (_instance_id != InstanceBot) | |
| 0 | 4000 st->print(",iid=%d",_instance_id); |
| 12966 | 4001 |
| 4002 dump_speculative(st); | |
| 0 | 4003 } |
| 4004 #endif | |
| 4005 | |
| 4006 bool TypeAryPtr::empty(void) const { | |
| 4007 if (_ary->empty()) return true; | |
| 4008 return TypeOopPtr::empty(); | |
| 4009 } | |
| 4010 | |
| 4011 //------------------------------add_offset------------------------------------- | |
| 12966 | 4012 const TypePtr *TypeAryPtr::add_offset(intptr_t offset) const { |
| 4013 return make(_ptr, _const_oop, _ary, _klass, _klass_is_exact, xadd_offset(offset), _instance_id, add_offset_speculative(offset)); | |
| 4014 } | |
| 4015 | |
|
14383
5ec7dace41a6
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents:
14228
diff
changeset
|
4016 const Type *TypeAryPtr::remove_speculative() const { |
|
5ec7dace41a6
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents:
14228
diff
changeset
|
4017 return make(_ptr, _const_oop, _ary->remove_speculative()->is_ary(), _klass, _klass_is_exact, _offset, _instance_id, NULL); |
| 12966 | 4018 } |
| 0 | 4019 |
| 4020 //============================================================================= | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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64
diff
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|
4021 |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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64
diff
changeset
|
4022 //------------------------------hash------------------------------------------- |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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64
diff
changeset
|
4023 // Type-specific hashing function. |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4024 int TypeNarrowPtr::hash(void) const { |
|
827
bf3489cc0aa0
6856025: assert(_base >= OopPtr && _base <= KlassPtr,"Not a Java pointer")
never
parents:
820
diff
changeset
|
4025 return _ptrtype->hash() + 7; |
|
113
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coleenp
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64
diff
changeset
|
4026 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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64
diff
changeset
|
4027 |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4028 bool TypeNarrowPtr::singleton(void) const { // TRUE if type is a singleton |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4029 return _ptrtype->singleton(); |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4030 } |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4031 |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4032 bool TypeNarrowPtr::empty(void) const { |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4033 return _ptrtype->empty(); |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4034 } |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4035 |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4036 intptr_t TypeNarrowPtr::get_con() const { |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4037 return _ptrtype->get_con(); |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4038 } |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4039 |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4040 bool TypeNarrowPtr::eq( const Type *t ) const { |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4041 const TypeNarrowPtr* tc = isa_same_narrowptr(t); |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4042 if (tc != NULL) { |
|
827
bf3489cc0aa0
6856025: assert(_base >= OopPtr && _base <= KlassPtr,"Not a Java pointer")
never
parents:
820
diff
changeset
|
4043 if (_ptrtype->base() != tc->_ptrtype->base()) { |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4044 return false; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4045 } |
|
827
bf3489cc0aa0
6856025: assert(_base >= OopPtr && _base <= KlassPtr,"Not a Java pointer")
never
parents:
820
diff
changeset
|
4046 return tc->_ptrtype->eq(_ptrtype); |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4047 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4048 return false; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4049 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4050 |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4051 const Type *TypeNarrowPtr::xdual() const { // Compute dual right now. |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4052 const TypePtr* odual = _ptrtype->dual()->is_ptr(); |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4053 return make_same_narrowptr(odual); |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4054 } |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4055 |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4056 |
|
14383
5ec7dace41a6
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents:
14228
diff
changeset
|
4057 const Type *TypeNarrowPtr::filter_helper(const Type *kills, bool include_speculative) const { |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4058 if (isa_same_narrowptr(kills)) { |
|
14383
5ec7dace41a6
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents:
14228
diff
changeset
|
4059 const Type* ft =_ptrtype->filter_helper(is_same_narrowptr(kills)->_ptrtype, include_speculative); |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4060 if (ft->empty()) |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4061 return Type::TOP; // Canonical empty value |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4062 if (ft->isa_ptr()) { |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4063 return make_hash_same_narrowptr(ft->isa_ptr()); |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4064 } |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4065 return ft; |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4066 } else if (kills->isa_ptr()) { |
|
14383
5ec7dace41a6
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents:
14228
diff
changeset
|
4067 const Type* ft = _ptrtype->join_helper(kills, include_speculative); |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4068 if (ft->empty()) |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4069 return Type::TOP; // Canonical empty value |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4070 return ft; |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4071 } else { |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4072 return Type::TOP; |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4073 } |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4074 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4075 |
|
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4076 //------------------------------xmeet------------------------------------------ |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4077 // Compute the MEET of two types. It returns a new Type object. |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4078 const Type *TypeNarrowPtr::xmeet( const Type *t ) const { |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4079 // Perform a fast test for common case; meeting the same types together. |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4080 if( this == t ) return this; // Meeting same type-rep? |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4081 |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4082 if (t->base() == base()) { |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4083 const Type* result = _ptrtype->xmeet(t->make_ptr()); |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4084 if (result->isa_ptr()) { |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4085 return make_hash_same_narrowptr(result->is_ptr()); |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4086 } |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4087 return result; |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4088 } |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4089 |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4090 // Current "this->_base" is NarrowKlass or NarrowOop |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4091 switch (t->base()) { // switch on original type |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4092 |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4093 case Int: // Mixing ints & oops happens when javac |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4094 case Long: // reuses local variables |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4095 case FloatTop: |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4096 case FloatCon: |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4097 case FloatBot: |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4098 case DoubleTop: |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4099 case DoubleCon: |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4100 case DoubleBot: |
|
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4101 case AnyPtr: |
|
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4102 case RawPtr: |
|
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4103 case OopPtr: |
|
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4104 case InstPtr: |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4105 case AryPtr: |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4106 case MetadataPtr: |
|
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4107 case KlassPtr: |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4108 case NarrowOop: |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4109 case NarrowKlass: |
|
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4110 |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4111 case Bottom: // Ye Olde Default |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4112 return Type::BOTTOM; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4113 case Top: |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4114 return this; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4115 |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4116 default: // All else is a mistake |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4117 typerr(t); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4118 |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4119 } // End of switch |
|
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4120 |
|
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4121 return this; |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4122 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4123 |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4124 #ifndef PRODUCT |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4125 void TypeNarrowPtr::dump2( Dict & d, uint depth, outputStream *st ) const { |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4126 _ptrtype->dump2(d, depth, st); |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4127 } |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4128 #endif |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4129 |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4130 const TypeNarrowOop *TypeNarrowOop::BOTTOM; |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4131 const TypeNarrowOop *TypeNarrowOop::NULL_PTR; |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4132 |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4133 |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4134 const TypeNarrowOop* TypeNarrowOop::make(const TypePtr* type) { |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4135 return (const TypeNarrowOop*)(new TypeNarrowOop(type))->hashcons(); |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4136 } |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4137 |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4138 |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4139 #ifndef PRODUCT |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4140 void TypeNarrowOop::dump2( Dict & d, uint depth, outputStream *st ) const { |
| 417 | 4141 st->print("narrowoop: "); |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4142 TypeNarrowPtr::dump2(d, depth, st); |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4143 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4144 #endif |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4145 |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4146 const TypeNarrowKlass *TypeNarrowKlass::NULL_PTR; |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4147 |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4148 const TypeNarrowKlass* TypeNarrowKlass::make(const TypePtr* type) { |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4149 return (const TypeNarrowKlass*)(new TypeNarrowKlass(type))->hashcons(); |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4150 } |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4151 |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4152 #ifndef PRODUCT |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4153 void TypeNarrowKlass::dump2( Dict & d, uint depth, outputStream *st ) const { |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4154 st->print("narrowklass: "); |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4155 TypeNarrowPtr::dump2(d, depth, st); |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4156 } |
|
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4157 #endif |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4158 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4159 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4160 //------------------------------eq--------------------------------------------- |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4161 // Structural equality check for Type representations |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4162 bool TypeMetadataPtr::eq( const Type *t ) const { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4163 const TypeMetadataPtr *a = (const TypeMetadataPtr*)t; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4164 ciMetadata* one = metadata(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4165 ciMetadata* two = a->metadata(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4166 if (one == NULL || two == NULL) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
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|
4167 return (one == two) && TypePtr::eq(t); |
|
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|
4168 } else { |
|
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|
4169 return one->equals(two) && TypePtr::eq(t); |
|
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|
4170 } |
|
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|
4171 } |
|
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|
4172 |
|
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|
4173 //------------------------------hash------------------------------------------- |
|
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|
4174 // Type-specific hashing function. |
|
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|
4175 int TypeMetadataPtr::hash(void) const { |
|
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|
4176 return |
|
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|
4177 (metadata() ? metadata()->hash() : 0) + |
|
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diff
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|
4178 TypePtr::hash(); |
|
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|
4179 } |
|
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|
4180 |
|
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|
4181 //------------------------------singleton-------------------------------------- |
|
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|
4182 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple |
|
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|
4183 // constants |
|
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|
4184 bool TypeMetadataPtr::singleton(void) const { |
|
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|
4185 // detune optimizer to not generate constant metadta + constant offset as a constant! |
|
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|
4186 // TopPTR, Null, AnyNull, Constant are all singletons |
|
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|
4187 return (_offset == 0) && !below_centerline(_ptr); |
|
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|
4188 } |
|
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|
4189 |
|
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|
4190 //------------------------------add_offset------------------------------------- |
|
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|
4191 const TypePtr *TypeMetadataPtr::add_offset( intptr_t offset ) const { |
|
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|
4192 return make( _ptr, _metadata, xadd_offset(offset)); |
|
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|
4193 } |
|
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|
4194 |
|
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|
4195 //-----------------------------filter------------------------------------------ |
|
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|
4196 // Do not allow interface-vs.-noninterface joins to collapse to top. |
|
14383
5ec7dace41a6
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents:
14228
diff
changeset
|
4197 const Type *TypeMetadataPtr::filter_helper(const Type *kills, bool include_speculative) const { |
|
5ec7dace41a6
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents:
14228
diff
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|
4198 const TypeMetadataPtr* ft = join_helper(kills, include_speculative)->isa_metadataptr(); |
|
6725
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|
4199 if (ft == NULL || ft->empty()) |
|
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|
4200 return Type::TOP; // Canonical empty value |
|
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|
4201 return ft; |
|
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|
4202 } |
|
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changeset
|
4203 |
|
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|
4204 //------------------------------get_con---------------------------------------- |
|
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|
4205 intptr_t TypeMetadataPtr::get_con() const { |
|
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|
4206 assert( _ptr == Null || _ptr == Constant, "" ); |
|
da91efe96a93
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|
4207 assert( _offset >= 0, "" ); |
|
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changeset
|
4208 |
|
da91efe96a93
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|
4209 if (_offset != 0) { |
|
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|
4210 // After being ported to the compiler interface, the compiler no longer |
|
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|
4211 // directly manipulates the addresses of oops. Rather, it only has a pointer |
|
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|
4212 // to a handle at compile time. This handle is embedded in the generated |
|
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|
4213 // code and dereferenced at the time the nmethod is made. Until that time, |
|
da91efe96a93
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|
4214 // it is not reasonable to do arithmetic with the addresses of oops (we don't |
|
da91efe96a93
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|
4215 // have access to the addresses!). This does not seem to currently happen, |
|
da91efe96a93
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|
4216 // but this assertion here is to help prevent its occurence. |
|
da91efe96a93
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|
4217 tty->print_cr("Found oop constant with non-zero offset"); |
|
da91efe96a93
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|
4218 ShouldNotReachHere(); |
|
da91efe96a93
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|
4219 } |
|
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|
4220 |
|
da91efe96a93
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|
4221 return (intptr_t)metadata()->constant_encoding(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
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|
4222 } |
|
da91efe96a93
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diff
changeset
|
4223 |
|
da91efe96a93
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|
4224 //------------------------------cast_to_ptr_type------------------------------- |
|
da91efe96a93
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|
4225 const Type *TypeMetadataPtr::cast_to_ptr_type(PTR ptr) const { |
|
da91efe96a93
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|
4226 if( ptr == _ptr ) return this; |
|
da91efe96a93
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changeset
|
4227 return make(ptr, metadata(), _offset); |
|
da91efe96a93
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|
4228 } |
|
da91efe96a93
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diff
changeset
|
4229 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
4230 //------------------------------meet------------------------------------------- |
|
da91efe96a93
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changeset
|
4231 // Compute the MEET of two types. It returns a new Type object. |
|
da91efe96a93
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|
4232 const Type *TypeMetadataPtr::xmeet( const Type *t ) const { |
|
da91efe96a93
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|
4233 // Perform a fast test for common case; meeting the same types together. |
|
da91efe96a93
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changeset
|
4234 if( this == t ) return this; // Meeting same type-rep? |
|
da91efe96a93
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changeset
|
4235 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
4236 // Current "this->_base" is OopPtr |
|
da91efe96a93
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coleenp
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changeset
|
4237 switch (t->base()) { // switch on original type |
|
da91efe96a93
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diff
changeset
|
4238 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
4239 case Int: // Mixing ints & oops happens when javac |
|
da91efe96a93
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changeset
|
4240 case Long: // reuses local variables |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
4241 case FloatTop: |
|
da91efe96a93
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coleenp
parents:
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diff
changeset
|
4242 case FloatCon: |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4243 case FloatBot: |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
4244 case DoubleTop: |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4245 case DoubleCon: |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
4246 case DoubleBot: |
|
da91efe96a93
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diff
changeset
|
4247 case NarrowOop: |
|
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4248 case NarrowKlass: |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
4249 case Bottom: // Ye Olde Default |
|
da91efe96a93
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changeset
|
4250 return Type::BOTTOM; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
4251 case Top: |
|
da91efe96a93
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coleenp
parents:
6198
diff
changeset
|
4252 return this; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
4253 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
4254 default: // All else is a mistake |
|
da91efe96a93
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|
4255 typerr(t); |
|
da91efe96a93
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diff
changeset
|
4256 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
4257 case AnyPtr: { |
|
da91efe96a93
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diff
changeset
|
4258 // Found an AnyPtr type vs self-OopPtr type |
|
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|
4259 const TypePtr *tp = t->is_ptr(); |
|
da91efe96a93
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|
4260 int offset = meet_offset(tp->offset()); |
|
da91efe96a93
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|
4261 PTR ptr = meet_ptr(tp->ptr()); |
|
da91efe96a93
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diff
changeset
|
4262 switch (tp->ptr()) { |
|
da91efe96a93
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diff
changeset
|
4263 case Null: |
|
da91efe96a93
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changeset
|
4264 if (ptr == Null) return TypePtr::make(AnyPtr, ptr, offset); |
|
da91efe96a93
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diff
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|
4265 // else fall through: |
|
da91efe96a93
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coleenp
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diff
changeset
|
4266 case TopPTR: |
|
da91efe96a93
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diff
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|
4267 case AnyNull: { |
|
da91efe96a93
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changeset
|
4268 return make(ptr, NULL, offset); |
|
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coleenp
parents:
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diff
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|
4269 } |
|
da91efe96a93
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coleenp
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6198
diff
changeset
|
4270 case BotPTR: |
|
da91efe96a93
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coleenp
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diff
changeset
|
4271 case NotNull: |
|
da91efe96a93
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|
4272 return TypePtr::make(AnyPtr, ptr, offset); |
|
da91efe96a93
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|
4273 default: typerr(t); |
|
da91efe96a93
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diff
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|
4274 } |
|
da91efe96a93
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diff
changeset
|
4275 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
4276 |
|
da91efe96a93
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diff
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|
4277 case RawPtr: |
|
da91efe96a93
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diff
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|
4278 case KlassPtr: |
|
da91efe96a93
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diff
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|
4279 case OopPtr: |
|
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diff
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|
4280 case InstPtr: |
|
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diff
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|
4281 case AryPtr: |
|
da91efe96a93
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diff
changeset
|
4282 return TypePtr::BOTTOM; // Oop meet raw is not well defined |
|
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diff
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|
4283 |
| 6728 | 4284 case MetadataPtr: { |
| 4285 const TypeMetadataPtr *tp = t->is_metadataptr(); | |
| 4286 int offset = meet_offset(tp->offset()); | |
| 4287 PTR tptr = tp->ptr(); | |
| 4288 PTR ptr = meet_ptr(tptr); | |
| 4289 ciMetadata* md = (tptr == TopPTR) ? metadata() : tp->metadata(); | |
| 4290 if (tptr == TopPTR || _ptr == TopPTR || | |
| 4291 metadata()->equals(tp->metadata())) { | |
| 4292 return make(ptr, md, offset); | |
| 4293 } | |
| 4294 // metadata is different | |
| 4295 if( ptr == Constant ) { // Cannot be equal constants, so... | |
| 4296 if( tptr == Constant && _ptr != Constant) return t; | |
| 4297 if( _ptr == Constant && tptr != Constant) return this; | |
| 4298 ptr = NotNull; // Fall down in lattice | |
| 4299 } | |
| 4300 return make(ptr, NULL, offset); | |
|
6725
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6198
diff
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|
4301 break; |
| 6728 | 4302 } |
|
6725
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4303 } // End of switch |
|
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4304 return this; // Return the double constant |
|
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|
4305 } |
|
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|
4306 |
|
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4307 |
|
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|
4308 //------------------------------xdual------------------------------------------ |
|
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4309 // Dual of a pure metadata pointer. |
|
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4310 const Type *TypeMetadataPtr::xdual() const { |
|
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4311 return new TypeMetadataPtr(dual_ptr(), metadata(), dual_offset()); |
|
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4312 } |
|
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4313 |
|
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|
4314 //------------------------------dump2------------------------------------------ |
|
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|
4315 #ifndef PRODUCT |
|
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4316 void TypeMetadataPtr::dump2( Dict &d, uint depth, outputStream *st ) const { |
|
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4317 st->print("metadataptr:%s", ptr_msg[_ptr]); |
|
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4318 if( metadata() ) st->print(INTPTR_FORMAT, metadata()); |
|
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4319 switch( _offset ) { |
|
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4320 case OffsetTop: st->print("+top"); break; |
|
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4321 case OffsetBot: st->print("+any"); break; |
|
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4322 case 0: break; |
|
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4323 default: st->print("+%d",_offset); break; |
|
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4324 } |
|
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|
4325 } |
|
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|
4326 #endif |
|
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|
4327 |
|
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|
4328 |
|
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|
4329 //============================================================================= |
|
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4330 // Convenience common pre-built type. |
|
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4331 const TypeMetadataPtr *TypeMetadataPtr::BOTTOM; |
|
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4332 |
|
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4333 TypeMetadataPtr::TypeMetadataPtr(PTR ptr, ciMetadata* metadata, int offset): |
|
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4334 TypePtr(MetadataPtr, ptr, offset), _metadata(metadata) { |
|
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4335 } |
|
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|
4336 |
|
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4337 const TypeMetadataPtr* TypeMetadataPtr::make(ciMethod* m) { |
|
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4338 return make(Constant, m, 0); |
|
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4339 } |
|
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4340 const TypeMetadataPtr* TypeMetadataPtr::make(ciMethodData* m) { |
|
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4341 return make(Constant, m, 0); |
|
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|
4342 } |
|
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|
4343 |
|
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|
4344 //------------------------------make------------------------------------------- |
|
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|
4345 // Create a meta data constant |
|
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4346 const TypeMetadataPtr *TypeMetadataPtr::make(PTR ptr, ciMetadata* m, int offset) { |
|
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4347 assert(m == NULL || !m->is_klass(), "wrong type"); |
|
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4348 return (TypeMetadataPtr*)(new TypeMetadataPtr(ptr, m, offset))->hashcons(); |
|
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|
4349 } |
|
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|
4350 |
|
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|
4351 |
|
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|
4352 //============================================================================= |
| 0 | 4353 // Convenience common pre-built types. |
| 4354 | |
| 4355 // Not-null object klass or below | |
| 4356 const TypeKlassPtr *TypeKlassPtr::OBJECT; | |
| 4357 const TypeKlassPtr *TypeKlassPtr::OBJECT_OR_NULL; | |
| 4358 | |
|
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4359 //------------------------------TypeKlassPtr----------------------------------- |
| 0 | 4360 TypeKlassPtr::TypeKlassPtr( PTR ptr, ciKlass* klass, int offset ) |
|
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4361 : TypePtr(KlassPtr, ptr, offset), _klass(klass), _klass_is_exact(ptr == Constant) { |
| 0 | 4362 } |
| 4363 | |
| 4364 //------------------------------make------------------------------------------- | |
| 4365 // ptr to klass 'k', if Constant, or possibly to a sub-klass if not a Constant | |
| 4366 const TypeKlassPtr *TypeKlassPtr::make( PTR ptr, ciKlass* k, int offset ) { | |
| 4367 assert( k != NULL, "Expect a non-NULL klass"); | |
|
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|
4368 assert(k->is_instance_klass() || k->is_array_klass(), "Incorrect type of klass oop"); |
| 0 | 4369 TypeKlassPtr *r = |
| 4370 (TypeKlassPtr*)(new TypeKlassPtr(ptr, k, offset))->hashcons(); | |
| 4371 | |
| 4372 return r; | |
| 4373 } | |
| 4374 | |
| 4375 //------------------------------eq--------------------------------------------- | |
| 4376 // Structural equality check for Type representations | |
| 4377 bool TypeKlassPtr::eq( const Type *t ) const { | |
| 4378 const TypeKlassPtr *p = t->is_klassptr(); | |
| 4379 return | |
| 4380 klass()->equals(p->klass()) && | |
|
6725
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|
4381 TypePtr::eq(p); |
| 0 | 4382 } |
| 4383 | |
| 4384 //------------------------------hash------------------------------------------- | |
| 4385 // Type-specific hashing function. | |
| 4386 int TypeKlassPtr::hash(void) const { | |
|
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|
4387 return klass()->hash() + TypePtr::hash(); |
|
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|
4388 } |
|
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|
4389 |
|
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|
4390 //------------------------------singleton-------------------------------------- |
|
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|
4391 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple |
|
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|
4392 // constants |
|
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|
4393 bool TypeKlassPtr::singleton(void) const { |
|
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4394 // detune optimizer to not generate constant klass + constant offset as a constant! |
|
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|
4395 // TopPTR, Null, AnyNull, Constant are all singletons |
|
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|
4396 return (_offset == 0) && !below_centerline(_ptr); |
|
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|
4397 } |
| 0 | 4398 |
|
13014
6c2f07d1495f
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|
4399 // Do not allow interface-vs.-noninterface joins to collapse to top. |
|
14383
5ec7dace41a6
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
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diff
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|
4400 const Type *TypeKlassPtr::filter_helper(const Type *kills, bool include_speculative) const { |
|
13014
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|
4401 // logic here mirrors the one from TypeOopPtr::filter. See comments |
|
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|
4402 // there. |
|
14383
5ec7dace41a6
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|
4403 const Type* ft = join_helper(kills, include_speculative); |
|
13014
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|
4404 const TypeKlassPtr* ftkp = ft->isa_klassptr(); |
|
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|
4405 const TypeKlassPtr* ktkp = kills->isa_klassptr(); |
|
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|
4406 |
|
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|
4407 if (ft->empty()) { |
|
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|
4408 if (!empty() && ktkp != NULL && ktkp->klass()->is_loaded() && ktkp->klass()->is_interface()) |
|
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|
4409 return kills; // Uplift to interface |
|
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|
4410 |
|
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|
4411 return Type::TOP; // Canonical empty value |
|
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|
4412 } |
|
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|
4413 |
|
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|
4414 // Interface klass type could be exact in opposite to interface type, |
|
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|
4415 // return it here instead of incorrect Constant ptr J/L/Object (6894807). |
|
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|
4416 if (ftkp != NULL && ktkp != NULL && |
|
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|
4417 ftkp->is_loaded() && ftkp->klass()->is_interface() && |
|
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|
4418 !ftkp->klass_is_exact() && // Keep exact interface klass |
|
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|
4419 ktkp->is_loaded() && !ktkp->klass()->is_interface()) { |
|
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|
4420 return ktkp->cast_to_ptr_type(ftkp->ptr()); |
|
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|
4421 } |
|
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|
4422 |
|
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|
4423 return ft; |
|
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|
4424 } |
|
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|
4425 |
| 1761 | 4426 //----------------------compute_klass------------------------------------------ |
| 4427 // Compute the defining klass for this class | |
| 4428 ciKlass* TypeAryPtr::compute_klass(DEBUG_ONLY(bool verify)) const { | |
| 4429 // Compute _klass based on element type. | |
| 0 | 4430 ciKlass* k_ary = NULL; |
| 4431 const TypeInstPtr *tinst; | |
| 4432 const TypeAryPtr *tary; | |
|
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|
4433 const Type* el = elem(); |
|
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|
4434 if (el->isa_narrowoop()) { |
|
221
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|
4435 el = el->make_ptr(); |
|
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|
4436 } |
|
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|
4437 |
| 0 | 4438 // Get element klass |
|
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|
4439 if ((tinst = el->isa_instptr()) != NULL) { |
| 0 | 4440 // Compute array klass from element klass |
| 4441 k_ary = ciObjArrayKlass::make(tinst->klass()); | |
|
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|
4442 } else if ((tary = el->isa_aryptr()) != NULL) { |
| 0 | 4443 // Compute array klass from element klass |
| 4444 ciKlass* k_elem = tary->klass(); | |
| 4445 // If element type is something like bottom[], k_elem will be null. | |
| 4446 if (k_elem != NULL) | |
| 4447 k_ary = ciObjArrayKlass::make(k_elem); | |
|
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|
4448 } else if ((el->base() == Type::Top) || |
|
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|
4449 (el->base() == Type::Bottom)) { |
| 0 | 4450 // element type of Bottom occurs from meet of basic type |
| 4451 // and object; Top occurs when doing join on Bottom. | |
| 4452 // Leave k_ary at NULL. | |
| 4453 } else { | |
| 4454 // Cannot compute array klass directly from basic type, | |
| 4455 // since subtypes of TypeInt all have basic type T_INT. | |
| 1761 | 4456 #ifdef ASSERT |
| 4457 if (verify && el->isa_int()) { | |
| 4458 // Check simple cases when verifying klass. | |
| 4459 BasicType bt = T_ILLEGAL; | |
| 4460 if (el == TypeInt::BYTE) { | |
| 4461 bt = T_BYTE; | |
| 4462 } else if (el == TypeInt::SHORT) { | |
| 4463 bt = T_SHORT; | |
| 4464 } else if (el == TypeInt::CHAR) { | |
| 4465 bt = T_CHAR; | |
| 4466 } else if (el == TypeInt::INT) { | |
| 4467 bt = T_INT; | |
| 4468 } else { | |
| 4469 return _klass; // just return specified klass | |
| 4470 } | |
| 4471 return ciTypeArrayKlass::make(bt); | |
| 4472 } | |
| 4473 #endif | |
|
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|
4474 assert(!el->isa_int(), |
| 0 | 4475 "integral arrays must be pre-equipped with a class"); |
| 4476 // Compute array klass directly from basic type | |
|
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|
4477 k_ary = ciTypeArrayKlass::make(el->basic_type()); |
| 0 | 4478 } |
| 1761 | 4479 return k_ary; |
| 4480 } | |
| 4481 | |
| 4482 //------------------------------klass------------------------------------------ | |
| 4483 // Return the defining klass for this class | |
| 4484 ciKlass* TypeAryPtr::klass() const { | |
| 4485 if( _klass ) return _klass; // Return cached value, if possible | |
| 4486 | |
| 4487 // Oops, need to compute _klass and cache it | |
| 4488 ciKlass* k_ary = compute_klass(); | |
| 0 | 4489 |
|
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diff
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|
4490 if( this != TypeAryPtr::OOPS && this->dual() != TypeAryPtr::OOPS ) { |
| 0 | 4491 // The _klass field acts as a cache of the underlying |
| 4492 // ciKlass for this array type. In order to set the field, | |
| 4493 // we need to cast away const-ness. | |
| 4494 // | |
| 4495 // IMPORTANT NOTE: we *never* set the _klass field for the | |
| 4496 // type TypeAryPtr::OOPS. This Type is shared between all | |
| 4497 // active compilations. However, the ciKlass which represents | |
| 4498 // this Type is *not* shared between compilations, so caching | |
| 4499 // this value would result in fetching a dangling pointer. | |
| 4500 // | |
| 4501 // Recomputing the underlying ciKlass for each request is | |
| 4502 // a bit less efficient than caching, but calls to | |
| 4503 // TypeAryPtr::OOPS->klass() are not common enough to matter. | |
| 4504 ((TypeAryPtr*)this)->_klass = k_ary; | |
| 163 | 4505 if (UseCompressedOops && k_ary != NULL && k_ary->is_obj_array_klass() && |
| 4506 _offset != 0 && _offset != arrayOopDesc::length_offset_in_bytes()) { | |
| 4507 ((TypeAryPtr*)this)->_is_ptr_to_narrowoop = true; | |
| 4508 } | |
| 4509 } | |
| 0 | 4510 return k_ary; |
| 4511 } | |
| 4512 | |
| 4513 | |
| 4514 //------------------------------add_offset------------------------------------- | |
| 4515 // Access internals of klass object | |
|
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|
4516 const TypePtr *TypeKlassPtr::add_offset( intptr_t offset ) const { |
| 0 | 4517 return make( _ptr, klass(), xadd_offset(offset) ); |
| 4518 } | |
| 4519 | |
| 4520 //------------------------------cast_to_ptr_type------------------------------- | |
| 4521 const Type *TypeKlassPtr::cast_to_ptr_type(PTR ptr) const { | |
|
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|
4522 assert(_base == KlassPtr, "subclass must override cast_to_ptr_type"); |
| 0 | 4523 if( ptr == _ptr ) return this; |
| 4524 return make(ptr, _klass, _offset); | |
| 4525 } | |
| 4526 | |
| 4527 | |
| 4528 //-----------------------------cast_to_exactness------------------------------- | |
| 4529 const Type *TypeKlassPtr::cast_to_exactness(bool klass_is_exact) const { | |
| 4530 if( klass_is_exact == _klass_is_exact ) return this; | |
| 4531 if (!UseExactTypes) return this; | |
| 4532 return make(klass_is_exact ? Constant : NotNull, _klass, _offset); | |
| 4533 } | |
| 4534 | |
| 4535 | |
| 4536 //-----------------------------as_instance_type-------------------------------- | |
| 4537 // Corresponding type for an instance of the given class. | |
| 4538 // It will be NotNull, and exact if and only if the klass type is exact. | |
| 4539 const TypeOopPtr* TypeKlassPtr::as_instance_type() const { | |
| 4540 ciKlass* k = klass(); | |
| 4541 bool xk = klass_is_exact(); | |
| 4542 //return TypeInstPtr::make(TypePtr::NotNull, k, xk, NULL, 0); | |
| 4543 const TypeOopPtr* toop = TypeOopPtr::make_from_klass_raw(k); | |
|
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|
4544 guarantee(toop != NULL, "need type for given klass"); |
| 0 | 4545 toop = toop->cast_to_ptr_type(TypePtr::NotNull)->is_oopptr(); |
| 4546 return toop->cast_to_exactness(xk)->is_oopptr(); | |
| 4547 } | |
| 4548 | |
| 4549 | |
| 4550 //------------------------------xmeet------------------------------------------ | |
| 4551 // Compute the MEET of two types, return a new Type object. | |
| 4552 const Type *TypeKlassPtr::xmeet( const Type *t ) const { | |
| 4553 // Perform a fast test for common case; meeting the same types together. | |
| 4554 if( this == t ) return this; // Meeting same type-rep? | |
| 4555 | |
| 4556 // Current "this->_base" is Pointer | |
| 4557 switch (t->base()) { // switch on original type | |
| 4558 | |
| 4559 case Int: // Mixing ints & oops happens when javac | |
| 4560 case Long: // reuses local variables | |
| 4561 case FloatTop: | |
| 4562 case FloatCon: | |
| 4563 case FloatBot: | |
| 4564 case DoubleTop: | |
| 4565 case DoubleCon: | |
| 4566 case DoubleBot: | |
|
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4567 case NarrowOop: |
|
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|
4568 case NarrowKlass: |
| 0 | 4569 case Bottom: // Ye Olde Default |
| 4570 return Type::BOTTOM; | |
| 4571 case Top: | |
| 4572 return this; | |
| 4573 | |
| 4574 default: // All else is a mistake | |
| 4575 typerr(t); | |
| 4576 | |
| 4577 case AnyPtr: { // Meeting to AnyPtrs | |
| 4578 // Found an AnyPtr type vs self-KlassPtr type | |
| 4579 const TypePtr *tp = t->is_ptr(); | |
| 4580 int offset = meet_offset(tp->offset()); | |
| 4581 PTR ptr = meet_ptr(tp->ptr()); | |
| 4582 switch (tp->ptr()) { | |
| 4583 case TopPTR: | |
| 4584 return this; | |
| 4585 case Null: | |
| 4586 if( ptr == Null ) return TypePtr::make( AnyPtr, ptr, offset ); | |
| 4587 case AnyNull: | |
| 4588 return make( ptr, klass(), offset ); | |
| 4589 case BotPTR: | |
| 4590 case NotNull: | |
| 4591 return TypePtr::make(AnyPtr, ptr, offset); | |
| 4592 default: typerr(t); | |
| 4593 } | |
| 4594 } | |
| 4595 | |
|
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4596 case RawPtr: |
|
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4597 case MetadataPtr: |
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|
4598 case OopPtr: |
| 0 | 4599 case AryPtr: // Meet with AryPtr |
| 4600 case InstPtr: // Meet with InstPtr | |
|
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|
4601 return TypePtr::BOTTOM; |
| 0 | 4602 |
| 4603 // | |
| 4604 // A-top } | |
| 4605 // / | \ } Tops | |
| 4606 // B-top A-any C-top } | |
| 4607 // | / | \ | } Any-nulls | |
| 4608 // B-any | C-any } | |
| 4609 // | | | | |
| 4610 // B-con A-con C-con } constants; not comparable across classes | |
| 4611 // | | | | |
| 4612 // B-not | C-not } | |
| 4613 // | \ | / | } not-nulls | |
| 4614 // B-bot A-not C-bot } | |
| 4615 // \ | / } Bottoms | |
| 4616 // A-bot } | |
| 4617 // | |
| 4618 | |
| 4619 case KlassPtr: { // Meet two KlassPtr types | |
| 4620 const TypeKlassPtr *tkls = t->is_klassptr(); | |
| 4621 int off = meet_offset(tkls->offset()); | |
| 4622 PTR ptr = meet_ptr(tkls->ptr()); | |
| 4623 | |
| 4624 // Check for easy case; klasses are equal (and perhaps not loaded!) | |
| 4625 // If we have constants, then we created oops so classes are loaded | |
| 4626 // and we can handle the constants further down. This case handles | |
| 4627 // not-loaded classes | |
| 4628 if( ptr != Constant && tkls->klass()->equals(klass()) ) { | |
| 4629 return make( ptr, klass(), off ); | |
| 4630 } | |
| 4631 | |
| 4632 // Classes require inspection in the Java klass hierarchy. Must be loaded. | |
| 4633 ciKlass* tkls_klass = tkls->klass(); | |
| 4634 ciKlass* this_klass = this->klass(); | |
| 4635 assert( tkls_klass->is_loaded(), "This class should have been loaded."); | |
| 4636 assert( this_klass->is_loaded(), "This class should have been loaded."); | |
| 4637 | |
| 4638 // If 'this' type is above the centerline and is a superclass of the | |
| 4639 // other, we can treat 'this' as having the same type as the other. | |
| 4640 if ((above_centerline(this->ptr())) && | |
| 4641 tkls_klass->is_subtype_of(this_klass)) { | |
| 4642 this_klass = tkls_klass; | |
| 4643 } | |
| 4644 // If 'tinst' type is above the centerline and is a superclass of the | |
| 4645 // other, we can treat 'tinst' as having the same type as the other. | |
| 4646 if ((above_centerline(tkls->ptr())) && | |
| 4647 this_klass->is_subtype_of(tkls_klass)) { | |
| 4648 tkls_klass = this_klass; | |
| 4649 } | |
| 4650 | |
| 4651 // Check for classes now being equal | |
| 4652 if (tkls_klass->equals(this_klass)) { | |
| 4653 // If the klasses are equal, the constants may still differ. Fall to | |
| 4654 // NotNull if they do (neither constant is NULL; that is a special case | |
| 4655 // handled elsewhere). | |
| 4656 if( ptr == Constant ) { | |
|
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|
4657 if (this->_ptr == Constant && tkls->_ptr == Constant && |
|
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|
4658 this->klass()->equals(tkls->klass())); |
|
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|
4659 else if (above_centerline(this->ptr())); |
|
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|
4660 else if (above_centerline(tkls->ptr())); |
| 0 | 4661 else |
| 4662 ptr = NotNull; | |
| 4663 } | |
| 4664 return make( ptr, this_klass, off ); | |
| 4665 } // Else classes are not equal | |
| 4666 | |
| 4667 // Since klasses are different, we require the LCA in the Java | |
| 4668 // class hierarchy - which means we have to fall to at least NotNull. | |
| 4669 if( ptr == TopPTR || ptr == AnyNull || ptr == Constant ) | |
| 4670 ptr = NotNull; | |
| 4671 // Now we find the LCA of Java classes | |
| 4672 ciKlass* k = this_klass->least_common_ancestor(tkls_klass); | |
| 4673 return make( ptr, k, off ); | |
| 4674 } // End of case KlassPtr | |
| 4675 | |
| 4676 } // End of switch | |
| 4677 return this; // Return the double constant | |
| 4678 } | |
| 4679 | |
| 4680 //------------------------------xdual------------------------------------------ | |
| 4681 // Dual: compute field-by-field dual | |
| 4682 const Type *TypeKlassPtr::xdual() const { | |
| 4683 return new TypeKlassPtr( dual_ptr(), klass(), dual_offset() ); | |
| 4684 } | |
| 4685 | |
|
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|
4686 //------------------------------get_con---------------------------------------- |
|
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|
4687 intptr_t TypeKlassPtr::get_con() const { |
|
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|
4688 assert( _ptr == Null || _ptr == Constant, "" ); |
|
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diff
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|
4689 assert( _offset >= 0, "" ); |
|
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diff
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|
4690 |
|
da91efe96a93
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|
4691 if (_offset != 0) { |
|
da91efe96a93
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diff
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|
4692 // After being ported to the compiler interface, the compiler no longer |
|
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diff
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|
4693 // directly manipulates the addresses of oops. Rather, it only has a pointer |
|
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diff
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|
4694 // to a handle at compile time. This handle is embedded in the generated |
|
da91efe96a93
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diff
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|
4695 // code and dereferenced at the time the nmethod is made. Until that time, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6198
diff
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|
4696 // it is not reasonable to do arithmetic with the addresses of oops (we don't |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
4697 // have access to the addresses!). This does not seem to currently happen, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
4698 // but this assertion here is to help prevent its occurence. |
|
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diff
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|
4699 tty->print_cr("Found oop constant with non-zero offset"); |
|
da91efe96a93
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|
4700 ShouldNotReachHere(); |
|
da91efe96a93
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|
4701 } |
|
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|
4702 |
|
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|
4703 return (intptr_t)klass()->constant_encoding(); |
|
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|
4704 } |
| 0 | 4705 //------------------------------dump2------------------------------------------ |
| 4706 // Dump Klass Type | |
| 4707 #ifndef PRODUCT | |
| 4708 void TypeKlassPtr::dump2( Dict & d, uint depth, outputStream *st ) const { | |
| 4709 switch( _ptr ) { | |
| 4710 case Constant: | |
| 4711 st->print("precise "); | |
| 4712 case NotNull: | |
| 4713 { | |
| 4714 const char *name = klass()->name()->as_utf8(); | |
| 4715 if( name ) { | |
| 4716 st->print("klass %s: " INTPTR_FORMAT, name, klass()); | |
| 4717 } else { | |
| 4718 ShouldNotReachHere(); | |
| 4719 } | |
| 4720 } | |
| 4721 case BotPTR: | |
| 4722 if( !WizardMode && !Verbose && !_klass_is_exact ) break; | |
| 4723 case TopPTR: | |
| 4724 case AnyNull: | |
| 4725 st->print(":%s", ptr_msg[_ptr]); | |
| 4726 if( _klass_is_exact ) st->print(":exact"); | |
| 4727 break; | |
| 4728 } | |
| 4729 | |
| 4730 if( _offset ) { // Dump offset, if any | |
| 4731 if( _offset == OffsetBot ) { st->print("+any"); } | |
| 4732 else if( _offset == OffsetTop ) { st->print("+unknown"); } | |
| 4733 else { st->print("+%d", _offset); } | |
| 4734 } | |
| 4735 | |
| 4736 st->print(" *"); | |
| 4737 } | |
| 4738 #endif | |
| 4739 | |
| 4740 | |
| 4741 | |
| 4742 //============================================================================= | |
| 4743 // Convenience common pre-built types. | |
| 4744 | |
| 4745 //------------------------------make------------------------------------------- | |
| 4746 const TypeFunc *TypeFunc::make( const TypeTuple *domain, const TypeTuple *range ) { | |
| 4747 return (TypeFunc*)(new TypeFunc(domain,range))->hashcons(); | |
| 4748 } | |
| 4749 | |
| 4750 //------------------------------make------------------------------------------- | |
| 4751 const TypeFunc *TypeFunc::make(ciMethod* method) { | |
| 4752 Compile* C = Compile::current(); | |
| 4753 const TypeFunc* tf = C->last_tf(method); // check cache | |
| 4754 if (tf != NULL) return tf; // The hit rate here is almost 50%. | |
| 4755 const TypeTuple *domain; | |
|
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diff
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|
4756 if (method->is_static()) { |
| 0 | 4757 domain = TypeTuple::make_domain(NULL, method->signature()); |
| 4758 } else { | |
| 4759 domain = TypeTuple::make_domain(method->holder(), method->signature()); | |
| 4760 } | |
| 4761 const TypeTuple *range = TypeTuple::make_range(method->signature()); | |
| 4762 tf = TypeFunc::make(domain, range); | |
| 4763 C->set_last_tf(method, tf); // fill cache | |
| 4764 return tf; | |
| 4765 } | |
| 4766 | |
| 4767 //------------------------------meet------------------------------------------- | |
| 4768 // Compute the MEET of two types. It returns a new Type object. | |
| 4769 const Type *TypeFunc::xmeet( const Type *t ) const { | |
| 4770 // Perform a fast test for common case; meeting the same types together. | |
| 4771 if( this == t ) return this; // Meeting same type-rep? | |
| 4772 | |
| 4773 // Current "this->_base" is Func | |
| 4774 switch (t->base()) { // switch on original type | |
| 4775 | |
| 4776 case Bottom: // Ye Olde Default | |
| 4777 return t; | |
| 4778 | |
| 4779 default: // All else is a mistake | |
| 4780 typerr(t); | |
| 4781 | |
| 4782 case Top: | |
| 4783 break; | |
| 4784 } | |
| 4785 return this; // Return the double constant | |
| 4786 } | |
| 4787 | |
| 4788 //------------------------------xdual------------------------------------------ | |
| 4789 // Dual: compute field-by-field dual | |
| 4790 const Type *TypeFunc::xdual() const { | |
| 4791 return this; | |
| 4792 } | |
| 4793 | |
| 4794 //------------------------------eq--------------------------------------------- | |
| 4795 // Structural equality check for Type representations | |
| 4796 bool TypeFunc::eq( const Type *t ) const { | |
| 4797 const TypeFunc *a = (const TypeFunc*)t; | |
| 4798 return _domain == a->_domain && | |
| 4799 _range == a->_range; | |
| 4800 } | |
| 4801 | |
| 4802 //------------------------------hash------------------------------------------- | |
| 4803 // Type-specific hashing function. | |
| 4804 int TypeFunc::hash(void) const { | |
| 4805 return (intptr_t)_domain + (intptr_t)_range; | |
| 4806 } | |
| 4807 | |
| 4808 //------------------------------dump2------------------------------------------ | |
| 4809 // Dump Function Type | |
| 4810 #ifndef PRODUCT | |
| 4811 void TypeFunc::dump2( Dict &d, uint depth, outputStream *st ) const { | |
| 4812 if( _range->_cnt <= Parms ) | |
| 4813 st->print("void"); | |
| 4814 else { | |
| 4815 uint i; | |
| 4816 for (i = Parms; i < _range->_cnt-1; i++) { | |
| 4817 _range->field_at(i)->dump2(d,depth,st); | |
| 4818 st->print("/"); | |
| 4819 } | |
| 4820 _range->field_at(i)->dump2(d,depth,st); | |
| 4821 } | |
| 4822 st->print(" "); | |
| 4823 st->print("( "); | |
| 4824 if( !depth || d[this] ) { // Check for recursive dump | |
| 4825 st->print("...)"); | |
| 4826 return; | |
| 4827 } | |
| 4828 d.Insert((void*)this,(void*)this); // Stop recursion | |
| 4829 if (Parms < _domain->_cnt) | |
| 4830 _domain->field_at(Parms)->dump2(d,depth-1,st); | |
| 4831 for (uint i = Parms+1; i < _domain->_cnt; i++) { | |
| 4832 st->print(", "); | |
| 4833 _domain->field_at(i)->dump2(d,depth-1,st); | |
| 4834 } | |
| 4835 st->print(" )"); | |
| 4836 } | |
| 4837 #endif | |
| 4838 | |
| 4839 //------------------------------singleton-------------------------------------- | |
| 4840 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
| 4841 // constants (Ldi nodes). Singletons are integer, float or double constants | |
| 4842 // or a single symbol. | |
| 4843 bool TypeFunc::singleton(void) const { | |
| 4844 return false; // Never a singleton | |
| 4845 } | |
| 4846 | |
| 4847 bool TypeFunc::empty(void) const { | |
| 4848 return false; // Never empty | |
| 4849 } | |
| 4850 | |
| 4851 | |
| 4852 BasicType TypeFunc::return_type() const{ | |
| 4853 if (range()->cnt() == TypeFunc::Parms) { | |
| 4854 return T_VOID; | |
| 4855 } | |
| 4856 return range()->field_at(TypeFunc::Parms)->basic_type(); | |
| 4857 } |