Mercurial > hg > graal-jvmci-8
annotate src/share/vm/opto/type.cpp @ 24234:ea6f94ab283b default tip
Added tag jvmci-0.36 for changeset 8128b98d4736
author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
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date | Mon, 18 Sep 2017 18:49:45 +0200 |
parents | f13e777eb255 |
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rev | line source |
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0 | 1 /* |
23614 | 2 * Copyright (c) 1997, 2016, 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 | |
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44 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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45 |
0 | 46 // Portions of code courtesy of Clifford Click |
47 | |
48 // Optimization - Graph Style | |
49 | |
50 // Dictionary of types shared among compilations. | |
51 Dict* Type::_shared_type_dict = NULL; | |
52 | |
53 // Array which maps compiler types to Basic Types | |
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54 Type::TypeInfo Type::_type_info[Type::lastype] = { |
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55 { Bad, T_ILLEGAL, "bad", false, Node::NotAMachineReg, relocInfo::none }, // Bad |
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56 { Control, T_ILLEGAL, "control", false, 0, relocInfo::none }, // Control |
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57 { Bottom, T_VOID, "top", false, 0, relocInfo::none }, // Top |
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58 { Bad, T_INT, "int:", false, Op_RegI, relocInfo::none }, // Int |
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59 { Bad, T_LONG, "long:", false, Op_RegL, relocInfo::none }, // Long |
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60 { Half, T_VOID, "half", false, 0, relocInfo::none }, // Half |
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61 { Bad, T_NARROWOOP, "narrowoop:", false, Op_RegN, relocInfo::none }, // NarrowOop |
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62 { Bad, T_NARROWKLASS,"narrowklass:", false, Op_RegN, relocInfo::none }, // NarrowKlass |
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63 { Bad, T_ILLEGAL, "tuple:", false, Node::NotAMachineReg, relocInfo::none }, // Tuple |
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64 { Bad, T_ARRAY, "array:", false, Node::NotAMachineReg, relocInfo::none }, // Array |
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65 |
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66 #ifdef SPARC |
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67 { Bad, T_ILLEGAL, "vectors:", false, 0, relocInfo::none }, // VectorS |
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68 { Bad, T_ILLEGAL, "vectord:", false, Op_RegD, relocInfo::none }, // VectorD |
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69 { Bad, T_ILLEGAL, "vectorx:", false, 0, relocInfo::none }, // VectorX |
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70 { Bad, T_ILLEGAL, "vectory:", false, 0, relocInfo::none }, // VectorY |
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71 #elif defined(PPC64) |
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72 { Bad, T_ILLEGAL, "vectors:", false, 0, relocInfo::none }, // VectorS |
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73 { Bad, T_ILLEGAL, "vectord:", false, Op_RegL, relocInfo::none }, // VectorD |
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74 { Bad, T_ILLEGAL, "vectorx:", false, 0, relocInfo::none }, // VectorX |
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75 { Bad, T_ILLEGAL, "vectory:", false, 0, relocInfo::none }, // VectorY |
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76 #else // all other |
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77 { Bad, T_ILLEGAL, "vectors:", false, Op_VecS, relocInfo::none }, // VectorS |
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78 { Bad, T_ILLEGAL, "vectord:", false, Op_VecD, relocInfo::none }, // VectorD |
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79 { Bad, T_ILLEGAL, "vectorx:", false, Op_VecX, relocInfo::none }, // VectorX |
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80 { Bad, T_ILLEGAL, "vectory:", false, Op_VecY, relocInfo::none }, // VectorY |
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81 #endif |
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82 { Bad, T_ADDRESS, "anyptr:", false, Op_RegP, relocInfo::none }, // AnyPtr |
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83 { Bad, T_ADDRESS, "rawptr:", false, Op_RegP, relocInfo::none }, // RawPtr |
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84 { Bad, T_OBJECT, "oop:", true, Op_RegP, relocInfo::oop_type }, // OopPtr |
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85 { Bad, T_OBJECT, "inst:", true, Op_RegP, relocInfo::oop_type }, // InstPtr |
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86 { Bad, T_OBJECT, "ary:", true, Op_RegP, relocInfo::oop_type }, // AryPtr |
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87 { Bad, T_METADATA, "metadata:", false, Op_RegP, relocInfo::metadata_type }, // MetadataPtr |
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88 { Bad, T_METADATA, "klass:", false, Op_RegP, relocInfo::metadata_type }, // KlassPtr |
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89 { Bad, T_OBJECT, "func", false, 0, relocInfo::none }, // Function |
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90 { Abio, T_ILLEGAL, "abIO", false, 0, relocInfo::none }, // Abio |
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91 { Return_Address, T_ADDRESS, "return_address",false, Op_RegP, relocInfo::none }, // Return_Address |
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92 { Memory, T_ILLEGAL, "memory", false, 0, relocInfo::none }, // Memory |
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93 { FloatBot, T_FLOAT, "float_top", false, Op_RegF, relocInfo::none }, // FloatTop |
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94 { FloatCon, T_FLOAT, "ftcon:", false, Op_RegF, relocInfo::none }, // FloatCon |
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95 { FloatTop, T_FLOAT, "float", false, Op_RegF, relocInfo::none }, // FloatBot |
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96 { DoubleBot, T_DOUBLE, "double_top", false, Op_RegD, relocInfo::none }, // DoubleTop |
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97 { DoubleCon, T_DOUBLE, "dblcon:", false, Op_RegD, relocInfo::none }, // DoubleCon |
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98 { DoubleTop, T_DOUBLE, "double", false, Op_RegD, relocInfo::none }, // DoubleBot |
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99 { Top, T_ILLEGAL, "bottom", false, 0, relocInfo::none } // Bottom |
0 | 100 }; |
101 | |
102 // Map ideal registers (machine types) to ideal types | |
103 const Type *Type::mreg2type[_last_machine_leaf]; | |
104 | |
105 // Map basic types to canonical Type* pointers. | |
106 const Type* Type:: _const_basic_type[T_CONFLICT+1]; | |
107 | |
108 // Map basic types to constant-zero Types. | |
109 const Type* Type:: _zero_type[T_CONFLICT+1]; | |
110 | |
111 // Map basic types to array-body alias types. | |
112 const TypeAryPtr* TypeAryPtr::_array_body_type[T_CONFLICT+1]; | |
113 | |
114 //============================================================================= | |
115 // Convenience common pre-built types. | |
116 const Type *Type::ABIO; // State-of-machine only | |
117 const Type *Type::BOTTOM; // All values | |
118 const Type *Type::CONTROL; // Control only | |
119 const Type *Type::DOUBLE; // All doubles | |
120 const Type *Type::FLOAT; // All floats | |
121 const Type *Type::HALF; // Placeholder half of doublewide type | |
122 const Type *Type::MEMORY; // Abstract store only | |
123 const Type *Type::RETURN_ADDRESS; | |
124 const Type *Type::TOP; // No values in set | |
125 | |
126 //------------------------------get_const_type--------------------------- | |
127 const Type* Type::get_const_type(ciType* type) { | |
128 if (type == NULL) { | |
129 return NULL; | |
130 } else if (type->is_primitive_type()) { | |
131 return get_const_basic_type(type->basic_type()); | |
132 } else { | |
133 return TypeOopPtr::make_from_klass(type->as_klass()); | |
134 } | |
135 } | |
136 | |
137 //---------------------------array_element_basic_type--------------------------------- | |
138 // Mapping to the array element's basic type. | |
139 BasicType Type::array_element_basic_type() const { | |
140 BasicType bt = basic_type(); | |
141 if (bt == T_INT) { | |
142 if (this == TypeInt::INT) return T_INT; | |
143 if (this == TypeInt::CHAR) return T_CHAR; | |
144 if (this == TypeInt::BYTE) return T_BYTE; | |
145 if (this == TypeInt::BOOL) return T_BOOLEAN; | |
146 if (this == TypeInt::SHORT) return T_SHORT; | |
147 return T_VOID; | |
148 } | |
149 return bt; | |
150 } | |
151 | |
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152 // For two instance arrays of same dimension, return the base element types. |
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153 // Otherwise or if the arrays have different dimensions, return NULL. |
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154 void Type::get_arrays_base_elements(const Type *a1, const Type *a2, |
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155 const TypeInstPtr **e1, const TypeInstPtr **e2) { |
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156 |
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157 if (e1) *e1 = NULL; |
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158 if (e2) *e2 = NULL; |
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159 const TypeAryPtr* a1tap = (a1 == NULL) ? NULL : a1->isa_aryptr(); |
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160 const TypeAryPtr* a2tap = (a2 == NULL) ? NULL : a2->isa_aryptr(); |
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161 |
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162 if (a1tap != NULL && a2tap != NULL) { |
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163 // Handle multidimensional arrays |
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164 const TypePtr* a1tp = a1tap->elem()->make_ptr(); |
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165 const TypePtr* a2tp = a2tap->elem()->make_ptr(); |
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166 while (a1tp && a1tp->isa_aryptr() && a2tp && a2tp->isa_aryptr()) { |
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167 a1tap = a1tp->is_aryptr(); |
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168 a2tap = a2tp->is_aryptr(); |
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169 a1tp = a1tap->elem()->make_ptr(); |
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170 a2tp = a2tap->elem()->make_ptr(); |
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171 } |
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172 if (a1tp && a1tp->isa_instptr() && a2tp && a2tp->isa_instptr()) { |
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173 if (e1) *e1 = a1tp->is_instptr(); |
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174 if (e2) *e2 = a2tp->is_instptr(); |
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175 } |
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176 } |
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177 } |
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178 |
0 | 179 //---------------------------get_typeflow_type--------------------------------- |
180 // Import a type produced by ciTypeFlow. | |
181 const Type* Type::get_typeflow_type(ciType* type) { | |
182 switch (type->basic_type()) { | |
183 | |
184 case ciTypeFlow::StateVector::T_BOTTOM: | |
185 assert(type == ciTypeFlow::StateVector::bottom_type(), ""); | |
186 return Type::BOTTOM; | |
187 | |
188 case ciTypeFlow::StateVector::T_TOP: | |
189 assert(type == ciTypeFlow::StateVector::top_type(), ""); | |
190 return Type::TOP; | |
191 | |
192 case ciTypeFlow::StateVector::T_NULL: | |
193 assert(type == ciTypeFlow::StateVector::null_type(), ""); | |
194 return TypePtr::NULL_PTR; | |
195 | |
196 case ciTypeFlow::StateVector::T_LONG2: | |
197 // The ciTypeFlow pass pushes a long, then the half. | |
198 // We do the same. | |
199 assert(type == ciTypeFlow::StateVector::long2_type(), ""); | |
200 return TypeInt::TOP; | |
201 | |
202 case ciTypeFlow::StateVector::T_DOUBLE2: | |
203 // The ciTypeFlow pass pushes double, then the half. | |
204 // Our convention is the same. | |
205 assert(type == ciTypeFlow::StateVector::double2_type(), ""); | |
206 return Type::TOP; | |
207 | |
208 case T_ADDRESS: | |
209 assert(type->is_return_address(), ""); | |
210 return TypeRawPtr::make((address)(intptr_t)type->as_return_address()->bci()); | |
211 | |
212 default: | |
213 // make sure we did not mix up the cases: | |
214 assert(type != ciTypeFlow::StateVector::bottom_type(), ""); | |
215 assert(type != ciTypeFlow::StateVector::top_type(), ""); | |
216 assert(type != ciTypeFlow::StateVector::null_type(), ""); | |
217 assert(type != ciTypeFlow::StateVector::long2_type(), ""); | |
218 assert(type != ciTypeFlow::StateVector::double2_type(), ""); | |
219 assert(!type->is_return_address(), ""); | |
220 | |
221 return Type::get_const_type(type); | |
222 } | |
223 } | |
224 | |
225 | |
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226 //-----------------------make_from_constant------------------------------------ |
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227 const Type* Type::make_from_constant(ciConstant constant, |
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228 bool require_constant, bool is_autobox_cache) { |
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229 switch (constant.basic_type()) { |
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230 case T_BOOLEAN: return TypeInt::make(constant.as_boolean()); |
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231 case T_CHAR: return TypeInt::make(constant.as_char()); |
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232 case T_BYTE: return TypeInt::make(constant.as_byte()); |
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233 case T_SHORT: return TypeInt::make(constant.as_short()); |
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234 case T_INT: return TypeInt::make(constant.as_int()); |
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235 case T_LONG: return TypeLong::make(constant.as_long()); |
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236 case T_FLOAT: return TypeF::make(constant.as_float()); |
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237 case T_DOUBLE: return TypeD::make(constant.as_double()); |
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238 case T_ARRAY: |
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239 case T_OBJECT: |
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240 { |
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241 // cases: |
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242 // can_be_constant = (oop not scavengable || ScavengeRootsInCode != 0) |
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243 // should_be_constant = (oop not scavengable || ScavengeRootsInCode >= 2) |
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244 // An oop is not scavengable if it is in the perm gen. |
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245 ciObject* oop_constant = constant.as_object(); |
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246 if (oop_constant->is_null_object()) { |
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247 return Type::get_zero_type(T_OBJECT); |
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248 } else if (require_constant || oop_constant->should_be_constant()) { |
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249 return TypeOopPtr::make_from_constant(oop_constant, require_constant, is_autobox_cache); |
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250 } |
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251 } |
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252 } |
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253 // Fall through to failure |
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254 return NULL; |
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255 } |
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256 |
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257 |
0 | 258 //------------------------------make------------------------------------------- |
259 // Create a simple Type, with default empty symbol sets. Then hashcons it | |
260 // and look for an existing copy in the type dictionary. | |
261 const Type *Type::make( enum TYPES t ) { | |
262 return (new Type(t))->hashcons(); | |
263 } | |
223 | 264 |
0 | 265 //------------------------------cmp-------------------------------------------- |
266 int Type::cmp( const Type *const t1, const Type *const t2 ) { | |
267 if( t1->_base != t2->_base ) | |
268 return 1; // Missed badly | |
269 assert(t1 != t2 || t1->eq(t2), "eq must be reflexive"); | |
270 return !t1->eq(t2); // Return ZERO if equal | |
271 } | |
272 | |
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273 const Type* Type::maybe_remove_speculative(bool include_speculative) const { |
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274 if (!include_speculative) { |
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275 return remove_speculative(); |
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276 } |
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277 return this; |
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278 } |
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279 |
0 | 280 //------------------------------hash------------------------------------------- |
281 int Type::uhash( const Type *const t ) { | |
282 return t->hash(); | |
283 } | |
284 | |
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285 #define SMALLINT ((juint)3) // a value too insignificant to consider widening |
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286 |
0 | 287 //--------------------------Initialize_shared---------------------------------- |
288 void Type::Initialize_shared(Compile* current) { | |
289 // This method does not need to be locked because the first system | |
290 // compilations (stub compilations) occur serially. If they are | |
291 // changed to proceed in parallel, then this section will need | |
292 // locking. | |
293 | |
294 Arena* save = current->type_arena(); | |
20360 | 295 Arena* shared_type_arena = new (mtCompiler)Arena(mtCompiler); |
0 | 296 |
297 current->set_type_arena(shared_type_arena); | |
298 _shared_type_dict = | |
299 new (shared_type_arena) Dict( (CmpKey)Type::cmp, (Hash)Type::uhash, | |
300 shared_type_arena, 128 ); | |
301 current->set_type_dict(_shared_type_dict); | |
302 | |
303 // Make shared pre-built types. | |
304 CONTROL = make(Control); // Control only | |
305 TOP = make(Top); // No values in set | |
306 MEMORY = make(Memory); // Abstract store only | |
307 ABIO = make(Abio); // State-of-machine only | |
308 RETURN_ADDRESS=make(Return_Address); | |
309 FLOAT = make(FloatBot); // All floats | |
310 DOUBLE = make(DoubleBot); // All doubles | |
311 BOTTOM = make(Bottom); // Everything | |
312 HALF = make(Half); // Placeholder half of doublewide type | |
313 | |
314 TypeF::ZERO = TypeF::make(0.0); // Float 0 (positive zero) | |
315 TypeF::ONE = TypeF::make(1.0); // Float 1 | |
316 | |
317 TypeD::ZERO = TypeD::make(0.0); // Double 0 (positive zero) | |
318 TypeD::ONE = TypeD::make(1.0); // Double 1 | |
319 | |
320 TypeInt::MINUS_1 = TypeInt::make(-1); // -1 | |
321 TypeInt::ZERO = TypeInt::make( 0); // 0 | |
322 TypeInt::ONE = TypeInt::make( 1); // 1 | |
323 TypeInt::BOOL = TypeInt::make(0,1, WidenMin); // 0 or 1, FALSE or TRUE. | |
324 TypeInt::CC = TypeInt::make(-1, 1, WidenMin); // -1, 0 or 1, condition codes | |
325 TypeInt::CC_LT = TypeInt::make(-1,-1, WidenMin); // == TypeInt::MINUS_1 | |
326 TypeInt::CC_GT = TypeInt::make( 1, 1, WidenMin); // == TypeInt::ONE | |
327 TypeInt::CC_EQ = TypeInt::make( 0, 0, WidenMin); // == TypeInt::ZERO | |
328 TypeInt::CC_LE = TypeInt::make(-1, 0, WidenMin); | |
329 TypeInt::CC_GE = TypeInt::make( 0, 1, WidenMin); // == TypeInt::BOOL | |
330 TypeInt::BYTE = TypeInt::make(-128,127, WidenMin); // Bytes | |
624 | 331 TypeInt::UBYTE = TypeInt::make(0, 255, WidenMin); // Unsigned Bytes |
0 | 332 TypeInt::CHAR = TypeInt::make(0,65535, WidenMin); // Java chars |
333 TypeInt::SHORT = TypeInt::make(-32768,32767, WidenMin); // Java shorts | |
334 TypeInt::POS = TypeInt::make(0,max_jint, WidenMin); // Non-neg values | |
335 TypeInt::POS1 = TypeInt::make(1,max_jint, WidenMin); // Positive values | |
336 TypeInt::INT = TypeInt::make(min_jint,max_jint, WidenMax); // 32-bit integers | |
337 TypeInt::SYMINT = TypeInt::make(-max_jint,max_jint,WidenMin); // symmetric range | |
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338 TypeInt::TYPE_DOMAIN = TypeInt::INT; |
0 | 339 // CmpL is overloaded both as the bytecode computation returning |
340 // a trinary (-1,0,+1) integer result AND as an efficient long | |
341 // compare returning optimizer ideal-type flags. | |
342 assert( TypeInt::CC_LT == TypeInt::MINUS_1, "types must match for CmpL to work" ); | |
343 assert( TypeInt::CC_GT == TypeInt::ONE, "types must match for CmpL to work" ); | |
344 assert( TypeInt::CC_EQ == TypeInt::ZERO, "types must match for CmpL to work" ); | |
345 assert( TypeInt::CC_GE == TypeInt::BOOL, "types must match for CmpL to work" ); | |
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346 assert( (juint)(TypeInt::CC->_hi - TypeInt::CC->_lo) <= SMALLINT, "CC is truly small"); |
0 | 347 |
348 TypeLong::MINUS_1 = TypeLong::make(-1); // -1 | |
349 TypeLong::ZERO = TypeLong::make( 0); // 0 | |
350 TypeLong::ONE = TypeLong::make( 1); // 1 | |
351 TypeLong::POS = TypeLong::make(0,max_jlong, WidenMin); // Non-neg values | |
352 TypeLong::LONG = TypeLong::make(min_jlong,max_jlong,WidenMax); // 64-bit integers | |
353 TypeLong::INT = TypeLong::make((jlong)min_jint,(jlong)max_jint,WidenMin); | |
354 TypeLong::UINT = TypeLong::make(0,(jlong)max_juint,WidenMin); | |
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355 TypeLong::TYPE_DOMAIN = TypeLong::LONG; |
0 | 356 |
357 const Type **fboth =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
358 fboth[0] = Type::CONTROL; | |
359 fboth[1] = Type::CONTROL; | |
360 TypeTuple::IFBOTH = TypeTuple::make( 2, fboth ); | |
361 | |
362 const Type **ffalse =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
363 ffalse[0] = Type::CONTROL; | |
364 ffalse[1] = Type::TOP; | |
365 TypeTuple::IFFALSE = TypeTuple::make( 2, ffalse ); | |
366 | |
367 const Type **fneither =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
368 fneither[0] = Type::TOP; | |
369 fneither[1] = Type::TOP; | |
370 TypeTuple::IFNEITHER = TypeTuple::make( 2, fneither ); | |
371 | |
372 const Type **ftrue =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
373 ftrue[0] = Type::TOP; | |
374 ftrue[1] = Type::CONTROL; | |
375 TypeTuple::IFTRUE = TypeTuple::make( 2, ftrue ); | |
376 | |
377 const Type **floop =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
378 floop[0] = Type::CONTROL; | |
379 floop[1] = TypeInt::INT; | |
380 TypeTuple::LOOPBODY = TypeTuple::make( 2, floop ); | |
381 | |
382 TypePtr::NULL_PTR= TypePtr::make( AnyPtr, TypePtr::Null, 0 ); | |
383 TypePtr::NOTNULL = TypePtr::make( AnyPtr, TypePtr::NotNull, OffsetBot ); | |
384 TypePtr::BOTTOM = TypePtr::make( AnyPtr, TypePtr::BotPTR, OffsetBot ); | |
385 | |
386 TypeRawPtr::BOTTOM = TypeRawPtr::make( TypePtr::BotPTR ); | |
387 TypeRawPtr::NOTNULL= TypeRawPtr::make( TypePtr::NotNull ); | |
388 | |
389 const Type **fmembar = TypeTuple::fields(0); | |
390 TypeTuple::MEMBAR = TypeTuple::make(TypeFunc::Parms+0, fmembar); | |
391 | |
392 const Type **fsc = (const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
393 fsc[0] = TypeInt::CC; | |
394 fsc[1] = Type::MEMORY; | |
395 TypeTuple::STORECONDITIONAL = TypeTuple::make(2, fsc); | |
396 | |
397 TypeInstPtr::NOTNULL = TypeInstPtr::make(TypePtr::NotNull, current->env()->Object_klass()); | |
398 TypeInstPtr::BOTTOM = TypeInstPtr::make(TypePtr::BotPTR, current->env()->Object_klass()); | |
399 TypeInstPtr::MIRROR = TypeInstPtr::make(TypePtr::NotNull, current->env()->Class_klass()); | |
400 TypeInstPtr::MARK = TypeInstPtr::make(TypePtr::BotPTR, current->env()->Object_klass(), | |
401 false, 0, oopDesc::mark_offset_in_bytes()); | |
402 TypeInstPtr::KLASS = TypeInstPtr::make(TypePtr::BotPTR, current->env()->Object_klass(), | |
403 false, 0, oopDesc::klass_offset_in_bytes()); | |
12966 | 404 TypeOopPtr::BOTTOM = TypeOopPtr::make(TypePtr::BotPTR, OffsetBot, TypeOopPtr::InstanceBot, NULL); |
0 | 405 |
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406 TypeMetadataPtr::BOTTOM = TypeMetadataPtr::make(TypePtr::BotPTR, NULL, OffsetBot); |
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407 |
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408 TypeNarrowOop::NULL_PTR = TypeNarrowOop::make( TypePtr::NULL_PTR ); |
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409 TypeNarrowOop::BOTTOM = TypeNarrowOop::make( TypeInstPtr::BOTTOM ); |
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410 |
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411 TypeNarrowKlass::NULL_PTR = TypeNarrowKlass::make( TypePtr::NULL_PTR ); |
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412 |
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413 mreg2type[Op_Node] = Type::BOTTOM; |
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414 mreg2type[Op_Set ] = 0; |
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415 mreg2type[Op_RegN] = TypeNarrowOop::BOTTOM; |
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416 mreg2type[Op_RegI] = TypeInt::INT; |
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417 mreg2type[Op_RegP] = TypePtr::BOTTOM; |
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418 mreg2type[Op_RegF] = Type::FLOAT; |
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419 mreg2type[Op_RegD] = Type::DOUBLE; |
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420 mreg2type[Op_RegL] = TypeLong::LONG; |
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421 mreg2type[Op_RegFlags] = TypeInt::CC; |
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422 |
1761 | 423 TypeAryPtr::RANGE = TypeAryPtr::make( TypePtr::BotPTR, TypeAry::make(Type::BOTTOM,TypeInt::POS), NULL /* current->env()->Object_klass() */, false, arrayOopDesc::length_offset_in_bytes()); |
163 | 424 |
425 TypeAryPtr::NARROWOOPS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeNarrowOop::BOTTOM, TypeInt::POS), NULL /*ciArrayKlass::make(o)*/, false, Type::OffsetBot); | |
426 | |
427 #ifdef _LP64 | |
428 if (UseCompressedOops) { | |
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429 assert(TypeAryPtr::NARROWOOPS->is_ptr_to_narrowoop(), "array of narrow oops must be ptr to narrow oop"); |
163 | 430 TypeAryPtr::OOPS = TypeAryPtr::NARROWOOPS; |
431 } else | |
432 #endif | |
433 { | |
434 // There is no shared klass for Object[]. See note in TypeAryPtr::klass(). | |
435 TypeAryPtr::OOPS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInstPtr::BOTTOM,TypeInt::POS), NULL /*ciArrayKlass::make(o)*/, false, Type::OffsetBot); | |
436 } | |
0 | 437 TypeAryPtr::BYTES = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInt::BYTE ,TypeInt::POS), ciTypeArrayKlass::make(T_BYTE), true, Type::OffsetBot); |
438 TypeAryPtr::SHORTS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInt::SHORT ,TypeInt::POS), ciTypeArrayKlass::make(T_SHORT), true, Type::OffsetBot); | |
439 TypeAryPtr::CHARS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInt::CHAR ,TypeInt::POS), ciTypeArrayKlass::make(T_CHAR), true, Type::OffsetBot); | |
440 TypeAryPtr::INTS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInt::INT ,TypeInt::POS), ciTypeArrayKlass::make(T_INT), true, Type::OffsetBot); | |
441 TypeAryPtr::LONGS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeLong::LONG ,TypeInt::POS), ciTypeArrayKlass::make(T_LONG), true, Type::OffsetBot); | |
442 TypeAryPtr::FLOATS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(Type::FLOAT ,TypeInt::POS), ciTypeArrayKlass::make(T_FLOAT), true, Type::OffsetBot); | |
443 TypeAryPtr::DOUBLES = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(Type::DOUBLE ,TypeInt::POS), ciTypeArrayKlass::make(T_DOUBLE), true, Type::OffsetBot); | |
444 | |
163 | 445 // Nobody should ask _array_body_type[T_NARROWOOP]. Use NULL as assert. |
446 TypeAryPtr::_array_body_type[T_NARROWOOP] = NULL; | |
0 | 447 TypeAryPtr::_array_body_type[T_OBJECT] = TypeAryPtr::OOPS; |
163 | 448 TypeAryPtr::_array_body_type[T_ARRAY] = TypeAryPtr::OOPS; // arrays are stored in oop arrays |
0 | 449 TypeAryPtr::_array_body_type[T_BYTE] = TypeAryPtr::BYTES; |
450 TypeAryPtr::_array_body_type[T_BOOLEAN] = TypeAryPtr::BYTES; // boolean[] is a byte array | |
451 TypeAryPtr::_array_body_type[T_SHORT] = TypeAryPtr::SHORTS; | |
452 TypeAryPtr::_array_body_type[T_CHAR] = TypeAryPtr::CHARS; | |
453 TypeAryPtr::_array_body_type[T_INT] = TypeAryPtr::INTS; | |
454 TypeAryPtr::_array_body_type[T_LONG] = TypeAryPtr::LONGS; | |
455 TypeAryPtr::_array_body_type[T_FLOAT] = TypeAryPtr::FLOATS; | |
456 TypeAryPtr::_array_body_type[T_DOUBLE] = TypeAryPtr::DOUBLES; | |
457 | |
458 TypeKlassPtr::OBJECT = TypeKlassPtr::make( TypePtr::NotNull, current->env()->Object_klass(), 0 ); | |
459 TypeKlassPtr::OBJECT_OR_NULL = TypeKlassPtr::make( TypePtr::BotPTR, current->env()->Object_klass(), 0 ); | |
460 | |
461 const Type **fi2c = TypeTuple::fields(2); | |
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462 fi2c[TypeFunc::Parms+0] = TypeInstPtr::BOTTOM; // Method* |
0 | 463 fi2c[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // argument pointer |
464 TypeTuple::START_I2C = TypeTuple::make(TypeFunc::Parms+2, fi2c); | |
465 | |
466 const Type **intpair = TypeTuple::fields(2); | |
467 intpair[0] = TypeInt::INT; | |
468 intpair[1] = TypeInt::INT; | |
469 TypeTuple::INT_PAIR = TypeTuple::make(2, intpair); | |
470 | |
471 const Type **longpair = TypeTuple::fields(2); | |
472 longpair[0] = TypeLong::LONG; | |
473 longpair[1] = TypeLong::LONG; | |
474 TypeTuple::LONG_PAIR = TypeTuple::make(2, longpair); | |
475 | |
12323 | 476 const Type **intccpair = TypeTuple::fields(2); |
477 intccpair[0] = TypeInt::INT; | |
478 intccpair[1] = TypeInt::CC; | |
479 TypeTuple::INT_CC_PAIR = TypeTuple::make(2, intccpair); | |
480 | |
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481 const Type **longccpair = TypeTuple::fields(2); |
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482 longccpair[0] = TypeLong::LONG; |
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483 longccpair[1] = TypeInt::CC; |
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484 TypeTuple::LONG_CC_PAIR = TypeTuple::make(2, longccpair); |
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485 |
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486 _const_basic_type[T_NARROWOOP] = TypeNarrowOop::BOTTOM; |
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487 _const_basic_type[T_NARROWKLASS] = Type::BOTTOM; |
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488 _const_basic_type[T_BOOLEAN] = TypeInt::BOOL; |
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489 _const_basic_type[T_CHAR] = TypeInt::CHAR; |
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490 _const_basic_type[T_BYTE] = TypeInt::BYTE; |
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491 _const_basic_type[T_SHORT] = TypeInt::SHORT; |
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492 _const_basic_type[T_INT] = TypeInt::INT; |
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493 _const_basic_type[T_LONG] = TypeLong::LONG; |
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494 _const_basic_type[T_FLOAT] = Type::FLOAT; |
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495 _const_basic_type[T_DOUBLE] = Type::DOUBLE; |
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496 _const_basic_type[T_OBJECT] = TypeInstPtr::BOTTOM; |
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497 _const_basic_type[T_ARRAY] = TypeInstPtr::BOTTOM; // there is no separate bottom for arrays |
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498 _const_basic_type[T_VOID] = TypePtr::NULL_PTR; // reflection represents void this way |
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499 _const_basic_type[T_ADDRESS] = TypeRawPtr::BOTTOM; // both interpreter return addresses & random raw ptrs |
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500 _const_basic_type[T_CONFLICT] = Type::BOTTOM; // why not? |
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501 |
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502 _zero_type[T_NARROWOOP] = TypeNarrowOop::NULL_PTR; |
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503 _zero_type[T_NARROWKLASS] = TypeNarrowKlass::NULL_PTR; |
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504 _zero_type[T_BOOLEAN] = TypeInt::ZERO; // false == 0 |
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505 _zero_type[T_CHAR] = TypeInt::ZERO; // '\0' == 0 |
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506 _zero_type[T_BYTE] = TypeInt::ZERO; // 0x00 == 0 |
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507 _zero_type[T_SHORT] = TypeInt::ZERO; // 0x0000 == 0 |
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508 _zero_type[T_INT] = TypeInt::ZERO; |
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509 _zero_type[T_LONG] = TypeLong::ZERO; |
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510 _zero_type[T_FLOAT] = TypeF::ZERO; |
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511 _zero_type[T_DOUBLE] = TypeD::ZERO; |
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512 _zero_type[T_OBJECT] = TypePtr::NULL_PTR; |
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513 _zero_type[T_ARRAY] = TypePtr::NULL_PTR; // null array is null oop |
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514 _zero_type[T_ADDRESS] = TypePtr::NULL_PTR; // raw pointers use the same null |
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515 _zero_type[T_VOID] = Type::TOP; // the only void value is no value at all |
0 | 516 |
517 // get_zero_type() should not happen for T_CONFLICT | |
518 _zero_type[T_CONFLICT]= NULL; | |
519 | |
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520 // Vector predefined types, it needs initialized _const_basic_type[]. |
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521 if (Matcher::vector_size_supported(T_BYTE,4)) { |
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522 TypeVect::VECTS = TypeVect::make(T_BYTE,4); |
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523 } |
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524 if (Matcher::vector_size_supported(T_FLOAT,2)) { |
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525 TypeVect::VECTD = TypeVect::make(T_FLOAT,2); |
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526 } |
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527 if (Matcher::vector_size_supported(T_FLOAT,4)) { |
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528 TypeVect::VECTX = TypeVect::make(T_FLOAT,4); |
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529 } |
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530 if (Matcher::vector_size_supported(T_FLOAT,8)) { |
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531 TypeVect::VECTY = TypeVect::make(T_FLOAT,8); |
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532 } |
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533 mreg2type[Op_VecS] = TypeVect::VECTS; |
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534 mreg2type[Op_VecD] = TypeVect::VECTD; |
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535 mreg2type[Op_VecX] = TypeVect::VECTX; |
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536 mreg2type[Op_VecY] = TypeVect::VECTY; |
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537 |
0 | 538 // Restore working type arena. |
539 current->set_type_arena(save); | |
540 current->set_type_dict(NULL); | |
541 } | |
542 | |
543 //------------------------------Initialize------------------------------------- | |
544 void Type::Initialize(Compile* current) { | |
545 assert(current->type_arena() != NULL, "must have created type arena"); | |
546 | |
547 if (_shared_type_dict == NULL) { | |
548 Initialize_shared(current); | |
549 } | |
550 | |
551 Arena* type_arena = current->type_arena(); | |
552 | |
553 // Create the hash-cons'ing dictionary with top-level storage allocation | |
554 Dict *tdic = new (type_arena) Dict( (CmpKey)Type::cmp,(Hash)Type::uhash, type_arena, 128 ); | |
555 current->set_type_dict(tdic); | |
556 | |
557 // Transfer the shared types. | |
558 DictI i(_shared_type_dict); | |
559 for( ; i.test(); ++i ) { | |
560 Type* t = (Type*)i._value; | |
561 tdic->Insert(t,t); // New Type, insert into Type table | |
562 } | |
563 } | |
564 | |
565 //------------------------------hashcons--------------------------------------- | |
566 // Do the hash-cons trick. If the Type already exists in the type table, | |
567 // delete the current Type and return the existing Type. Otherwise stick the | |
568 // current Type in the Type table. | |
569 const Type *Type::hashcons(void) { | |
570 debug_only(base()); // Check the assertion in Type::base(). | |
571 // Look up the Type in the Type dictionary | |
572 Dict *tdic = type_dict(); | |
573 Type* old = (Type*)(tdic->Insert(this, this, false)); | |
574 if( old ) { // Pre-existing Type? | |
575 if( old != this ) // Yes, this guy is not the pre-existing? | |
576 delete this; // Yes, Nuke this guy | |
577 assert( old->_dual, "" ); | |
578 return old; // Return pre-existing | |
579 } | |
580 | |
581 // Every type has a dual (to make my lattice symmetric). | |
582 // Since we just discovered a new Type, compute its dual right now. | |
583 assert( !_dual, "" ); // No dual yet | |
584 _dual = xdual(); // Compute the dual | |
585 if( cmp(this,_dual)==0 ) { // Handle self-symmetric | |
586 _dual = this; | |
587 return this; | |
588 } | |
589 assert( !_dual->_dual, "" ); // No reverse dual yet | |
590 assert( !(*tdic)[_dual], "" ); // Dual not in type system either | |
591 // New Type, insert into Type table | |
592 tdic->Insert((void*)_dual,(void*)_dual); | |
593 ((Type*)_dual)->_dual = this; // Finish up being symmetric | |
594 #ifdef ASSERT | |
595 Type *dual_dual = (Type*)_dual->xdual(); | |
596 assert( eq(dual_dual), "xdual(xdual()) should be identity" ); | |
597 delete dual_dual; | |
598 #endif | |
599 return this; // Return new Type | |
600 } | |
601 | |
602 //------------------------------eq--------------------------------------------- | |
603 // Structural equality check for Type representations | |
604 bool Type::eq( const Type * ) const { | |
605 return true; // Nothing else can go wrong | |
606 } | |
607 | |
608 //------------------------------hash------------------------------------------- | |
609 // Type-specific hashing function. | |
610 int Type::hash(void) const { | |
611 return _base; | |
612 } | |
613 | |
614 //------------------------------is_finite-------------------------------------- | |
615 // Has a finite value | |
616 bool Type::is_finite() const { | |
617 return false; | |
618 } | |
619 | |
620 //------------------------------is_nan----------------------------------------- | |
621 // Is not a number (NaN) | |
622 bool Type::is_nan() const { | |
623 return false; | |
624 } | |
625 | |
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626 //----------------------interface_vs_oop--------------------------------------- |
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627 #ifdef ASSERT |
12966 | 628 bool Type::interface_vs_oop_helper(const Type *t) const { |
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629 bool result = false; |
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630 |
992 | 631 const TypePtr* this_ptr = this->make_ptr(); // In case it is narrow_oop |
632 const TypePtr* t_ptr = t->make_ptr(); | |
633 if( this_ptr == NULL || t_ptr == NULL ) | |
634 return result; | |
635 | |
636 const TypeInstPtr* this_inst = this_ptr->isa_instptr(); | |
637 const TypeInstPtr* t_inst = t_ptr->isa_instptr(); | |
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638 if( this_inst && this_inst->is_loaded() && t_inst && t_inst->is_loaded() ) { |
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639 bool this_interface = this_inst->klass()->is_interface(); |
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640 bool t_interface = t_inst->klass()->is_interface(); |
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641 result = this_interface ^ t_interface; |
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642 } |
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643 |
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644 return result; |
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645 } |
12966 | 646 |
647 bool Type::interface_vs_oop(const Type *t) const { | |
648 if (interface_vs_oop_helper(t)) { | |
649 return true; | |
650 } | |
651 // Now check the speculative parts as well | |
652 const TypeOopPtr* this_spec = isa_oopptr() != NULL ? isa_oopptr()->speculative() : NULL; | |
653 const TypeOopPtr* t_spec = t->isa_oopptr() != NULL ? t->isa_oopptr()->speculative() : NULL; | |
654 if (this_spec != NULL && t_spec != NULL) { | |
655 if (this_spec->interface_vs_oop_helper(t_spec)) { | |
656 return true; | |
657 } | |
658 return false; | |
659 } | |
660 if (this_spec != NULL && this_spec->interface_vs_oop_helper(t)) { | |
661 return true; | |
662 } | |
663 if (t_spec != NULL && interface_vs_oop_helper(t_spec)) { | |
664 return true; | |
665 } | |
666 return false; | |
667 } | |
668 | |
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669 #endif |
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670 |
0 | 671 //------------------------------meet------------------------------------------- |
672 // Compute the MEET of two types. NOT virtual. It enforces that meet is | |
673 // commutative and the lattice is symmetric. | |
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674 const Type *Type::meet_helper(const Type *t, bool include_speculative) const { |
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675 if (isa_narrowoop() && t->isa_narrowoop()) { |
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676 const Type* result = make_ptr()->meet_helper(t->make_ptr(), include_speculative); |
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677 return result->make_narrowoop(); |
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678 } |
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679 if (isa_narrowklass() && t->isa_narrowklass()) { |
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680 const Type* result = make_ptr()->meet_helper(t->make_ptr(), include_speculative); |
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681 return result->make_narrowklass(); |
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682 } |
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683 |
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684 const Type *this_t = maybe_remove_speculative(include_speculative); |
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685 t = t->maybe_remove_speculative(include_speculative); |
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686 |
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687 const Type *mt = this_t->xmeet(t); |
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688 if (isa_narrowoop() || t->isa_narrowoop()) return mt; |
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689 if (isa_narrowklass() || t->isa_narrowklass()) return mt; |
0 | 690 #ifdef ASSERT |
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691 assert(mt == t->xmeet(this_t), "meet not commutative"); |
0 | 692 const Type* dual_join = mt->_dual; |
693 const Type *t2t = dual_join->xmeet(t->_dual); | |
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694 const Type *t2this = dual_join->xmeet(this_t->_dual); |
0 | 695 |
696 // Interface meet Oop is Not Symmetric: | |
697 // Interface:AnyNull meet Oop:AnyNull == Interface:AnyNull | |
698 // Interface:NotNull meet Oop:NotNull == java/lang/Object:NotNull | |
820
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699 |
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700 if( !interface_vs_oop(t) && (t2t != t->_dual || t2this != this_t->_dual) ) { |
0 | 701 tty->print_cr("=== Meet Not Symmetric ==="); |
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702 tty->print("t = "); t->dump(); tty->cr(); |
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703 tty->print("this= "); this_t->dump(); tty->cr(); |
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704 tty->print("mt=(t meet this)= "); mt->dump(); tty->cr(); |
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705 |
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706 tty->print("t_dual= "); t->_dual->dump(); tty->cr(); |
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707 tty->print("this_dual= "); this_t->_dual->dump(); tty->cr(); |
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708 tty->print("mt_dual= "); mt->_dual->dump(); tty->cr(); |
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709 |
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710 tty->print("mt_dual meet t_dual= "); t2t ->dump(); tty->cr(); |
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711 tty->print("mt_dual meet this_dual= "); t2this ->dump(); tty->cr(); |
0 | 712 |
713 fatal("meet not symmetric" ); | |
714 } | |
715 #endif | |
716 return mt; | |
717 } | |
718 | |
719 //------------------------------xmeet------------------------------------------ | |
720 // Compute the MEET of two types. It returns a new Type object. | |
721 const Type *Type::xmeet( const Type *t ) const { | |
722 // Perform a fast test for common case; meeting the same types together. | |
723 if( this == t ) return this; // Meeting same type-rep? | |
724 | |
725 // Meeting TOP with anything? | |
726 if( _base == Top ) return t; | |
727 | |
728 // Meeting BOTTOM with anything? | |
729 if( _base == Bottom ) return BOTTOM; | |
730 | |
731 // Current "this->_base" is one of: Bad, Multi, Control, Top, | |
732 // Abio, Abstore, Floatxxx, Doublexxx, Bottom, lastype. | |
733 switch (t->base()) { // Switch on original type | |
734 | |
735 // Cut in half the number of cases I must handle. Only need cases for when | |
736 // the given enum "t->type" is less than or equal to the local enum "type". | |
737 case FloatCon: | |
738 case DoubleCon: | |
739 case Int: | |
740 case Long: | |
741 return t->xmeet(this); | |
742 | |
743 case OopPtr: | |
744 return t->xmeet(this); | |
745 | |
746 case InstPtr: | |
747 return t->xmeet(this); | |
748 | |
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749 case MetadataPtr: |
0 | 750 case KlassPtr: |
751 return t->xmeet(this); | |
752 | |
753 case AryPtr: | |
754 return t->xmeet(this); | |
755 | |
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756 case NarrowOop: |
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757 return t->xmeet(this); |
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758 |
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759 case NarrowKlass: |
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760 return t->xmeet(this); |
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761 |
0 | 762 case Bad: // Type check |
763 default: // Bogus type not in lattice | |
764 typerr(t); | |
765 return Type::BOTTOM; | |
766 | |
767 case Bottom: // Ye Olde Default | |
768 return t; | |
769 | |
770 case FloatTop: | |
771 if( _base == FloatTop ) return this; | |
772 case FloatBot: // Float | |
773 if( _base == FloatBot || _base == FloatTop ) return FLOAT; | |
774 if( _base == DoubleTop || _base == DoubleBot ) return Type::BOTTOM; | |
775 typerr(t); | |
776 return Type::BOTTOM; | |
777 | |
778 case DoubleTop: | |
779 if( _base == DoubleTop ) return this; | |
780 case DoubleBot: // Double | |
781 if( _base == DoubleBot || _base == DoubleTop ) return DOUBLE; | |
782 if( _base == FloatTop || _base == FloatBot ) return Type::BOTTOM; | |
783 typerr(t); | |
784 return Type::BOTTOM; | |
785 | |
786 // These next few cases must match exactly or it is a compile-time error. | |
787 case Control: // Control of code | |
788 case Abio: // State of world outside of program | |
789 case Memory: | |
790 if( _base == t->_base ) return this; | |
791 typerr(t); | |
792 return Type::BOTTOM; | |
793 | |
794 case Top: // Top of the lattice | |
795 return this; | |
796 } | |
797 | |
798 // The type is unchanged | |
799 return this; | |
800 } | |
801 | |
802 //-----------------------------filter------------------------------------------ | |
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803 const Type *Type::filter_helper(const Type *kills, bool include_speculative) const { |
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804 const Type* ft = join_helper(kills, include_speculative); |
0 | 805 if (ft->empty()) |
806 return Type::TOP; // Canonical empty value | |
807 return ft; | |
808 } | |
809 | |
810 //------------------------------xdual------------------------------------------ | |
811 // Compute dual right now. | |
812 const Type::TYPES Type::dual_type[Type::lastype] = { | |
813 Bad, // Bad | |
814 Control, // Control | |
815 Bottom, // Top | |
816 Bad, // Int - handled in v-call | |
817 Bad, // Long - handled in v-call | |
818 Half, // Half | |
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819 Bad, // NarrowOop - handled in v-call |
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820 Bad, // NarrowKlass - handled in v-call |
0 | 821 |
822 Bad, // Tuple - handled in v-call | |
823 Bad, // Array - handled in v-call | |
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824 Bad, // VectorS - handled in v-call |
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825 Bad, // VectorD - handled in v-call |
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826 Bad, // VectorX - handled in v-call |
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827 Bad, // VectorY - handled in v-call |
0 | 828 |
829 Bad, // AnyPtr - handled in v-call | |
830 Bad, // RawPtr - handled in v-call | |
831 Bad, // OopPtr - handled in v-call | |
832 Bad, // InstPtr - handled in v-call | |
833 Bad, // AryPtr - handled in v-call | |
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834 |
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835 Bad, // MetadataPtr - handled in v-call |
0 | 836 Bad, // KlassPtr - handled in v-call |
837 | |
838 Bad, // Function - handled in v-call | |
839 Abio, // Abio | |
840 Return_Address,// Return_Address | |
841 Memory, // Memory | |
842 FloatBot, // FloatTop | |
843 FloatCon, // FloatCon | |
844 FloatTop, // FloatBot | |
845 DoubleBot, // DoubleTop | |
846 DoubleCon, // DoubleCon | |
847 DoubleTop, // DoubleBot | |
848 Top // Bottom | |
849 }; | |
850 | |
851 const Type *Type::xdual() const { | |
852 // Note: the base() accessor asserts the sanity of _base. | |
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853 assert(_type_info[base()].dual_type != Bad, "implement with v-call"); |
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854 return new Type(_type_info[_base].dual_type); |
0 | 855 } |
856 | |
857 //------------------------------has_memory------------------------------------- | |
858 bool Type::has_memory() const { | |
859 Type::TYPES tx = base(); | |
860 if (tx == Memory) return true; | |
861 if (tx == Tuple) { | |
862 const TypeTuple *t = is_tuple(); | |
863 for (uint i=0; i < t->cnt(); i++) { | |
864 tx = t->field_at(i)->base(); | |
865 if (tx == Memory) return true; | |
866 } | |
867 } | |
868 return false; | |
869 } | |
870 | |
871 #ifndef PRODUCT | |
872 //------------------------------dump2------------------------------------------ | |
873 void Type::dump2( Dict &d, uint depth, outputStream *st ) const { | |
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874 st->print("%s", _type_info[_base].msg); |
0 | 875 } |
876 | |
877 //------------------------------dump------------------------------------------- | |
878 void Type::dump_on(outputStream *st) const { | |
879 ResourceMark rm; | |
880 Dict d(cmpkey,hashkey); // Stop recursive type dumping | |
881 dump2(d,1, st); | |
163 | 882 if (is_ptr_to_narrowoop()) { |
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883 st->print(" [narrow]"); |
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884 } else if (is_ptr_to_narrowklass()) { |
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885 st->print(" [narrowklass]"); |
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886 } |
0 | 887 } |
888 #endif | |
889 | |
890 //------------------------------singleton-------------------------------------- | |
891 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
892 // constants (Ldi nodes). Singletons are integer, float or double constants. | |
893 bool Type::singleton(void) const { | |
894 return _base == Top || _base == Half; | |
895 } | |
896 | |
897 //------------------------------empty------------------------------------------ | |
898 // TRUE if Type is a type with no values, FALSE otherwise. | |
899 bool Type::empty(void) const { | |
900 switch (_base) { | |
901 case DoubleTop: | |
902 case FloatTop: | |
903 case Top: | |
904 return true; | |
905 | |
906 case Half: | |
907 case Abio: | |
908 case Return_Address: | |
909 case Memory: | |
910 case Bottom: | |
911 case FloatBot: | |
912 case DoubleBot: | |
913 return false; // never a singleton, therefore never empty | |
914 } | |
915 | |
916 ShouldNotReachHere(); | |
917 return false; | |
918 } | |
919 | |
920 //------------------------------dump_stats------------------------------------- | |
921 // Dump collected statistics to stderr | |
922 #ifndef PRODUCT | |
923 void Type::dump_stats() { | |
924 tty->print("Types made: %d\n", type_dict()->Size()); | |
925 } | |
926 #endif | |
927 | |
928 //------------------------------typerr----------------------------------------- | |
929 void Type::typerr( const Type *t ) const { | |
930 #ifndef PRODUCT | |
931 tty->print("\nError mixing types: "); | |
932 dump(); | |
933 tty->print(" and "); | |
934 t->dump(); | |
935 tty->print("\n"); | |
936 #endif | |
937 ShouldNotReachHere(); | |
938 } | |
939 | |
940 | |
941 //============================================================================= | |
942 // Convenience common pre-built types. | |
943 const TypeF *TypeF::ZERO; // Floating point zero | |
944 const TypeF *TypeF::ONE; // Floating point one | |
945 | |
946 //------------------------------make------------------------------------------- | |
947 // Create a float constant | |
948 const TypeF *TypeF::make(float f) { | |
949 return (TypeF*)(new TypeF(f))->hashcons(); | |
950 } | |
951 | |
952 //------------------------------meet------------------------------------------- | |
953 // Compute the MEET of two types. It returns a new Type object. | |
954 const Type *TypeF::xmeet( const Type *t ) const { | |
955 // Perform a fast test for common case; meeting the same types together. | |
956 if( this == t ) return this; // Meeting same type-rep? | |
957 | |
958 // Current "this->_base" is FloatCon | |
959 switch (t->base()) { // Switch on original type | |
960 case AnyPtr: // Mixing with oops happens when javac | |
961 case RawPtr: // reuses local variables | |
962 case OopPtr: | |
963 case InstPtr: | |
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964 case AryPtr: |
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965 case MetadataPtr: |
0 | 966 case KlassPtr: |
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967 case NarrowOop: |
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968 case NarrowKlass: |
0 | 969 case Int: |
970 case Long: | |
971 case DoubleTop: | |
972 case DoubleCon: | |
973 case DoubleBot: | |
974 case Bottom: // Ye Olde Default | |
975 return Type::BOTTOM; | |
976 | |
977 case FloatBot: | |
978 return t; | |
979 | |
980 default: // All else is a mistake | |
981 typerr(t); | |
982 | |
983 case FloatCon: // Float-constant vs Float-constant? | |
984 if( jint_cast(_f) != jint_cast(t->getf()) ) // unequal constants? | |
985 // must compare bitwise as positive zero, negative zero and NaN have | |
986 // all the same representation in C++ | |
987 return FLOAT; // Return generic float | |
988 // Equal constants | |
989 case Top: | |
990 case FloatTop: | |
991 break; // Return the float constant | |
992 } | |
993 return this; // Return the float constant | |
994 } | |
995 | |
996 //------------------------------xdual------------------------------------------ | |
997 // Dual: symmetric | |
998 const Type *TypeF::xdual() const { | |
999 return this; | |
1000 } | |
1001 | |
1002 //------------------------------eq--------------------------------------------- | |
1003 // Structural equality check for Type representations | |
1004 bool TypeF::eq( const Type *t ) const { | |
1005 if( g_isnan(_f) || | |
1006 g_isnan(t->getf()) ) { | |
1007 // One or both are NANs. If both are NANs return true, else false. | |
1008 return (g_isnan(_f) && g_isnan(t->getf())); | |
1009 } | |
1010 if (_f == t->getf()) { | |
1011 // (NaN is impossible at this point, since it is not equal even to itself) | |
1012 if (_f == 0.0) { | |
1013 // difference between positive and negative zero | |
1014 if (jint_cast(_f) != jint_cast(t->getf())) return false; | |
1015 } | |
1016 return true; | |
1017 } | |
1018 return false; | |
1019 } | |
1020 | |
1021 //------------------------------hash------------------------------------------- | |
1022 // Type-specific hashing function. | |
1023 int TypeF::hash(void) const { | |
1024 return *(int*)(&_f); | |
1025 } | |
1026 | |
1027 //------------------------------is_finite-------------------------------------- | |
1028 // Has a finite value | |
1029 bool TypeF::is_finite() const { | |
1030 return g_isfinite(getf()) != 0; | |
1031 } | |
1032 | |
1033 //------------------------------is_nan----------------------------------------- | |
1034 // Is not a number (NaN) | |
1035 bool TypeF::is_nan() const { | |
1036 return g_isnan(getf()) != 0; | |
1037 } | |
1038 | |
1039 //------------------------------dump2------------------------------------------ | |
1040 // Dump float constant Type | |
1041 #ifndef PRODUCT | |
1042 void TypeF::dump2( Dict &d, uint depth, outputStream *st ) const { | |
1043 Type::dump2(d,depth, st); | |
1044 st->print("%f", _f); | |
1045 } | |
1046 #endif | |
1047 | |
1048 //------------------------------singleton-------------------------------------- | |
1049 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
1050 // constants (Ldi nodes). Singletons are integer, float or double constants | |
1051 // or a single symbol. | |
1052 bool TypeF::singleton(void) const { | |
1053 return true; // Always a singleton | |
1054 } | |
1055 | |
1056 bool TypeF::empty(void) const { | |
1057 return false; // always exactly a singleton | |
1058 } | |
1059 | |
1060 //============================================================================= | |
1061 // Convenience common pre-built types. | |
1062 const TypeD *TypeD::ZERO; // Floating point zero | |
1063 const TypeD *TypeD::ONE; // Floating point one | |
1064 | |
1065 //------------------------------make------------------------------------------- | |
1066 const TypeD *TypeD::make(double d) { | |
1067 return (TypeD*)(new TypeD(d))->hashcons(); | |
1068 } | |
1069 | |
1070 //------------------------------meet------------------------------------------- | |
1071 // Compute the MEET of two types. It returns a new Type object. | |
1072 const Type *TypeD::xmeet( const Type *t ) const { | |
1073 // Perform a fast test for common case; meeting the same types together. | |
1074 if( this == t ) return this; // Meeting same type-rep? | |
1075 | |
1076 // Current "this->_base" is DoubleCon | |
1077 switch (t->base()) { // Switch on original type | |
1078 case AnyPtr: // Mixing with oops happens when javac | |
1079 case RawPtr: // reuses local variables | |
1080 case OopPtr: | |
1081 case InstPtr: | |
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1082 case AryPtr: |
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1083 case MetadataPtr: |
0 | 1084 case KlassPtr: |
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1085 case NarrowOop: |
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1086 case NarrowKlass: |
0 | 1087 case Int: |
1088 case Long: | |
1089 case FloatTop: | |
1090 case FloatCon: | |
1091 case FloatBot: | |
1092 case Bottom: // Ye Olde Default | |
1093 return Type::BOTTOM; | |
1094 | |
1095 case DoubleBot: | |
1096 return t; | |
1097 | |
1098 default: // All else is a mistake | |
1099 typerr(t); | |
1100 | |
1101 case DoubleCon: // Double-constant vs Double-constant? | |
1102 if( jlong_cast(_d) != jlong_cast(t->getd()) ) // unequal constants? (see comment in TypeF::xmeet) | |
1103 return DOUBLE; // Return generic double | |
1104 case Top: | |
1105 case DoubleTop: | |
1106 break; | |
1107 } | |
1108 return this; // Return the double constant | |
1109 } | |
1110 | |
1111 //------------------------------xdual------------------------------------------ | |
1112 // Dual: symmetric | |
1113 const Type *TypeD::xdual() const { | |
1114 return this; | |
1115 } | |
1116 | |
1117 //------------------------------eq--------------------------------------------- | |
1118 // Structural equality check for Type representations | |
1119 bool TypeD::eq( const Type *t ) const { | |
1120 if( g_isnan(_d) || | |
1121 g_isnan(t->getd()) ) { | |
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1122 // it is important, when two different NaNs are used in one method, the NaNs are treated |
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1123 // as different NaNs (as C1 does) |
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1124 jdouble td = t->getd(); |
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1125 return *((jlong*)(&_d)) == *(jlong*)(&td); |
0 | 1126 } |
1127 if (_d == t->getd()) { | |
1128 // (NaN is impossible at this point, since it is not equal even to itself) | |
1129 if (_d == 0.0) { | |
1130 // difference between positive and negative zero | |
1131 if (jlong_cast(_d) != jlong_cast(t->getd())) return false; | |
1132 } | |
1133 return true; | |
1134 } | |
1135 return false; | |
1136 } | |
1137 | |
1138 //------------------------------hash------------------------------------------- | |
1139 // Type-specific hashing function. | |
1140 int TypeD::hash(void) const { | |
1141 return *(int*)(&_d); | |
1142 } | |
1143 | |
1144 //------------------------------is_finite-------------------------------------- | |
1145 // Has a finite value | |
1146 bool TypeD::is_finite() const { | |
1147 return g_isfinite(getd()) != 0; | |
1148 } | |
1149 | |
1150 //------------------------------is_nan----------------------------------------- | |
1151 // Is not a number (NaN) | |
1152 bool TypeD::is_nan() const { | |
1153 return g_isnan(getd()) != 0; | |
1154 } | |
1155 | |
1156 //------------------------------dump2------------------------------------------ | |
1157 // Dump double constant Type | |
1158 #ifndef PRODUCT | |
1159 void TypeD::dump2( Dict &d, uint depth, outputStream *st ) const { | |
1160 Type::dump2(d,depth,st); | |
1161 st->print("%f", _d); | |
1162 } | |
1163 #endif | |
1164 | |
1165 //------------------------------singleton-------------------------------------- | |
1166 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
1167 // constants (Ldi nodes). Singletons are integer, float or double constants | |
1168 // or a single symbol. | |
1169 bool TypeD::singleton(void) const { | |
1170 return true; // Always a singleton | |
1171 } | |
1172 | |
1173 bool TypeD::empty(void) const { | |
1174 return false; // always exactly a singleton | |
1175 } | |
1176 | |
1177 //============================================================================= | |
1178 // Convience common pre-built types. | |
1179 const TypeInt *TypeInt::MINUS_1;// -1 | |
1180 const TypeInt *TypeInt::ZERO; // 0 | |
1181 const TypeInt *TypeInt::ONE; // 1 | |
1182 const TypeInt *TypeInt::BOOL; // 0 or 1, FALSE or TRUE. | |
1183 const TypeInt *TypeInt::CC; // -1,0 or 1, condition codes | |
1184 const TypeInt *TypeInt::CC_LT; // [-1] == MINUS_1 | |
1185 const TypeInt *TypeInt::CC_GT; // [1] == ONE | |
1186 const TypeInt *TypeInt::CC_EQ; // [0] == ZERO | |
1187 const TypeInt *TypeInt::CC_LE; // [-1,0] | |
1188 const TypeInt *TypeInt::CC_GE; // [0,1] == BOOL (!) | |
1189 const TypeInt *TypeInt::BYTE; // Bytes, -128 to 127 | |
624 | 1190 const TypeInt *TypeInt::UBYTE; // Unsigned Bytes, 0 to 255 |
0 | 1191 const TypeInt *TypeInt::CHAR; // Java chars, 0-65535 |
1192 const TypeInt *TypeInt::SHORT; // Java shorts, -32768-32767 | |
1193 const TypeInt *TypeInt::POS; // Positive 32-bit integers or zero | |
1194 const TypeInt *TypeInt::POS1; // Positive 32-bit integers | |
1195 const TypeInt *TypeInt::INT; // 32-bit integers | |
1196 const TypeInt *TypeInt::SYMINT; // symmetric range [-max_jint..max_jint] | |
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1197 const TypeInt *TypeInt::TYPE_DOMAIN; // alias for TypeInt::INT |
0 | 1198 |
1199 //------------------------------TypeInt---------------------------------------- | |
1200 TypeInt::TypeInt( jint lo, jint hi, int w ) : Type(Int), _lo(lo), _hi(hi), _widen(w) { | |
1201 } | |
1202 | |
1203 //------------------------------make------------------------------------------- | |
1204 const TypeInt *TypeInt::make( jint lo ) { | |
1205 return (TypeInt*)(new TypeInt(lo,lo,WidenMin))->hashcons(); | |
1206 } | |
1207 | |
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1208 static int normalize_int_widen( jint lo, jint hi, int w ) { |
0 | 1209 // Certain normalizations keep us sane when comparing types. |
1210 // The 'SMALLINT' covers constants and also CC and its relatives. | |
1211 if (lo <= hi) { | |
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1212 if (((juint)hi - lo) <= SMALLINT) w = Type::WidenMin; |
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1213 if (((juint)hi - lo) >= max_juint) w = Type::WidenMax; // TypeInt::INT |
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1214 } else { |
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1215 if (((juint)lo - hi) <= SMALLINT) w = Type::WidenMin; |
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1216 if (((juint)lo - hi) >= max_juint) w = Type::WidenMin; // dual TypeInt::INT |
0 | 1217 } |
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1218 return w; |
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1219 } |
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1220 |
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1221 const TypeInt *TypeInt::make( jint lo, jint hi, int w ) { |
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1222 w = normalize_int_widen(lo, hi, w); |
0 | 1223 return (TypeInt*)(new TypeInt(lo,hi,w))->hashcons(); |
1224 } | |
1225 | |
1226 //------------------------------meet------------------------------------------- | |
1227 // Compute the MEET of two types. It returns a new Type representation object | |
1228 // with reference count equal to the number of Types pointing at it. | |
1229 // Caller should wrap a Types around it. | |
1230 const Type *TypeInt::xmeet( const Type *t ) const { | |
1231 // Perform a fast test for common case; meeting the same types together. | |
1232 if( this == t ) return this; // Meeting same type? | |
1233 | |
1234 // Currently "this->_base" is a TypeInt | |
1235 switch (t->base()) { // Switch on original type | |
1236 case AnyPtr: // Mixing with oops happens when javac | |
1237 case RawPtr: // reuses local variables | |
1238 case OopPtr: | |
1239 case InstPtr: | |
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1240 case AryPtr: |
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1241 case MetadataPtr: |
0 | 1242 case KlassPtr: |
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1243 case NarrowOop: |
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1244 case NarrowKlass: |
0 | 1245 case Long: |
1246 case FloatTop: | |
1247 case FloatCon: | |
1248 case FloatBot: | |
1249 case DoubleTop: | |
1250 case DoubleCon: | |
1251 case DoubleBot: | |
1252 case Bottom: // Ye Olde Default | |
1253 return Type::BOTTOM; | |
1254 default: // All else is a mistake | |
1255 typerr(t); | |
1256 case Top: // No change | |
1257 return this; | |
1258 case Int: // Int vs Int? | |
1259 break; | |
1260 } | |
1261 | |
1262 // Expand covered set | |
1263 const TypeInt *r = t->is_int(); | |
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1264 return make( MIN2(_lo,r->_lo), MAX2(_hi,r->_hi), MAX2(_widen,r->_widen) ); |
0 | 1265 } |
1266 | |
1267 //------------------------------xdual------------------------------------------ | |
1268 // Dual: reverse hi & lo; flip widen | |
1269 const Type *TypeInt::xdual() const { | |
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1270 int w = normalize_int_widen(_hi,_lo, WidenMax-_widen); |
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1271 return new TypeInt(_hi,_lo,w); |
0 | 1272 } |
1273 | |
1274 //------------------------------widen------------------------------------------ | |
1275 // Only happens for optimistic top-down optimizations. | |
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1276 const Type *TypeInt::widen( const Type *old, const Type* limit ) const { |
0 | 1277 // Coming from TOP or such; no widening |
1278 if( old->base() != Int ) return this; | |
1279 const TypeInt *ot = old->is_int(); | |
1280 | |
1281 // If new guy is equal to old guy, no widening | |
1282 if( _lo == ot->_lo && _hi == ot->_hi ) | |
1283 return old; | |
1284 | |
1285 // If new guy contains old, then we widened | |
1286 if( _lo <= ot->_lo && _hi >= ot->_hi ) { | |
1287 // New contains old | |
1288 // If new guy is already wider than old, no widening | |
1289 if( _widen > ot->_widen ) return this; | |
1290 // If old guy was a constant, do not bother | |
1291 if (ot->_lo == ot->_hi) return this; | |
1292 // Now widen new guy. | |
1293 // Check for widening too far | |
1294 if (_widen == WidenMax) { | |
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1295 int max = max_jint; |
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1296 int min = min_jint; |
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1297 if (limit->isa_int()) { |
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1298 max = limit->is_int()->_hi; |
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1299 min = limit->is_int()->_lo; |
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1300 } |
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1301 if (min < _lo && _hi < max) { |
0 | 1302 // If neither endpoint is extremal yet, push out the endpoint |
1303 // which is closer to its respective limit. | |
1304 if (_lo >= 0 || // easy common case | |
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1305 (juint)(_lo - min) >= (juint)(max - _hi)) { |
0 | 1306 // Try to widen to an unsigned range type of 31 bits: |
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1307 return make(_lo, max, WidenMax); |
0 | 1308 } else { |
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1309 return make(min, _hi, WidenMax); |
0 | 1310 } |
1311 } | |
1312 return TypeInt::INT; | |
1313 } | |
1314 // Returned widened new guy | |
1315 return make(_lo,_hi,_widen+1); | |
1316 } | |
1317 | |
1318 // If old guy contains new, then we probably widened too far & dropped to | |
1319 // bottom. Return the wider fellow. | |
1320 if ( ot->_lo <= _lo && ot->_hi >= _hi ) | |
1321 return old; | |
1322 | |
1323 //fatal("Integer value range is not subset"); | |
1324 //return this; | |
1325 return TypeInt::INT; | |
1326 } | |
1327 | |
1328 //------------------------------narrow--------------------------------------- | |
1329 // Only happens for pessimistic optimizations. | |
1330 const Type *TypeInt::narrow( const Type *old ) const { | |
1331 if (_lo >= _hi) return this; // already narrow enough | |
1332 if (old == NULL) return this; | |
1333 const TypeInt* ot = old->isa_int(); | |
1334 if (ot == NULL) return this; | |
1335 jint olo = ot->_lo; | |
1336 jint ohi = ot->_hi; | |
1337 | |
1338 // If new guy is equal to old guy, no narrowing | |
1339 if (_lo == olo && _hi == ohi) return old; | |
1340 | |
1341 // If old guy was maximum range, allow the narrowing | |
1342 if (olo == min_jint && ohi == max_jint) return this; | |
1343 | |
1344 if (_lo < olo || _hi > ohi) | |
1345 return this; // doesn't narrow; pretty wierd | |
1346 | |
1347 // The new type narrows the old type, so look for a "death march". | |
1348 // See comments on PhaseTransform::saturate. | |
1349 juint nrange = _hi - _lo; | |
1350 juint orange = ohi - olo; | |
1351 if (nrange < max_juint - 1 && nrange > (orange >> 1) + (SMALLINT*2)) { | |
1352 // Use the new type only if the range shrinks a lot. | |
1353 // We do not want the optimizer computing 2^31 point by point. | |
1354 return old; | |
1355 } | |
1356 | |
1357 return this; | |
1358 } | |
1359 | |
1360 //-----------------------------filter------------------------------------------ | |
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1361 const Type *TypeInt::filter_helper(const Type *kills, bool include_speculative) const { |
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1362 const TypeInt* ft = join_helper(kills, include_speculative)->isa_int(); |
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1363 if (ft == NULL || ft->empty()) |
0 | 1364 return Type::TOP; // Canonical empty value |
1365 if (ft->_widen < this->_widen) { | |
1366 // Do not allow the value of kill->_widen to affect the outcome. | |
1367 // The widen bits must be allowed to run freely through the graph. | |
1368 ft = TypeInt::make(ft->_lo, ft->_hi, this->_widen); | |
1369 } | |
1370 return ft; | |
1371 } | |
1372 | |
1373 //------------------------------eq--------------------------------------------- | |
1374 // Structural equality check for Type representations | |
1375 bool TypeInt::eq( const Type *t ) const { | |
1376 const TypeInt *r = t->is_int(); // Handy access | |
1377 return r->_lo == _lo && r->_hi == _hi && r->_widen == _widen; | |
1378 } | |
1379 | |
1380 //------------------------------hash------------------------------------------- | |
1381 // Type-specific hashing function. | |
1382 int TypeInt::hash(void) const { | |
1383 return _lo+_hi+_widen+(int)Type::Int; | |
1384 } | |
1385 | |
1386 //------------------------------is_finite-------------------------------------- | |
1387 // Has a finite value | |
1388 bool TypeInt::is_finite() const { | |
1389 return true; | |
1390 } | |
1391 | |
1392 //------------------------------dump2------------------------------------------ | |
1393 // Dump TypeInt | |
1394 #ifndef PRODUCT | |
1395 static const char* intname(char* buf, jint n) { | |
1396 if (n == min_jint) | |
1397 return "min"; | |
1398 else if (n < min_jint + 10000) | |
1399 sprintf(buf, "min+" INT32_FORMAT, n - min_jint); | |
1400 else if (n == max_jint) | |
1401 return "max"; | |
1402 else if (n > max_jint - 10000) | |
1403 sprintf(buf, "max-" INT32_FORMAT, max_jint - n); | |
1404 else | |
1405 sprintf(buf, INT32_FORMAT, n); | |
1406 return buf; | |
1407 } | |
1408 | |
1409 void TypeInt::dump2( Dict &d, uint depth, outputStream *st ) const { | |
1410 char buf[40], buf2[40]; | |
1411 if (_lo == min_jint && _hi == max_jint) | |
1412 st->print("int"); | |
1413 else if (is_con()) | |
1414 st->print("int:%s", intname(buf, get_con())); | |
1415 else if (_lo == BOOL->_lo && _hi == BOOL->_hi) | |
1416 st->print("bool"); | |
1417 else if (_lo == BYTE->_lo && _hi == BYTE->_hi) | |
1418 st->print("byte"); | |
1419 else if (_lo == CHAR->_lo && _hi == CHAR->_hi) | |
1420 st->print("char"); | |
1421 else if (_lo == SHORT->_lo && _hi == SHORT->_hi) | |
1422 st->print("short"); | |
1423 else if (_hi == max_jint) | |
1424 st->print("int:>=%s", intname(buf, _lo)); | |
1425 else if (_lo == min_jint) | |
1426 st->print("int:<=%s", intname(buf, _hi)); | |
1427 else | |
1428 st->print("int:%s..%s", intname(buf, _lo), intname(buf2, _hi)); | |
1429 | |
1430 if (_widen != 0 && this != TypeInt::INT) | |
1431 st->print(":%.*s", _widen, "wwww"); | |
1432 } | |
1433 #endif | |
1434 | |
1435 //------------------------------singleton-------------------------------------- | |
1436 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
1437 // constants. | |
1438 bool TypeInt::singleton(void) const { | |
1439 return _lo >= _hi; | |
1440 } | |
1441 | |
1442 bool TypeInt::empty(void) const { | |
1443 return _lo > _hi; | |
1444 } | |
1445 | |
1446 //============================================================================= | |
1447 // Convenience common pre-built types. | |
1448 const TypeLong *TypeLong::MINUS_1;// -1 | |
1449 const TypeLong *TypeLong::ZERO; // 0 | |
1450 const TypeLong *TypeLong::ONE; // 1 | |
1451 const TypeLong *TypeLong::POS; // >=0 | |
1452 const TypeLong *TypeLong::LONG; // 64-bit integers | |
1453 const TypeLong *TypeLong::INT; // 32-bit subrange | |
1454 const TypeLong *TypeLong::UINT; // 32-bit unsigned subrange | |
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1455 const TypeLong *TypeLong::TYPE_DOMAIN; // alias for TypeLong::LONG |
0 | 1456 |
1457 //------------------------------TypeLong--------------------------------------- | |
1458 TypeLong::TypeLong( jlong lo, jlong hi, int w ) : Type(Long), _lo(lo), _hi(hi), _widen(w) { | |
1459 } | |
1460 | |
1461 //------------------------------make------------------------------------------- | |
1462 const TypeLong *TypeLong::make( jlong lo ) { | |
1463 return (TypeLong*)(new TypeLong(lo,lo,WidenMin))->hashcons(); | |
1464 } | |
1465 | |
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1466 static int normalize_long_widen( jlong lo, jlong hi, int w ) { |
0 | 1467 // Certain normalizations keep us sane when comparing types. |
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1468 // The 'SMALLINT' covers constants. |
0 | 1469 if (lo <= hi) { |
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1470 if (((julong)hi - lo) <= SMALLINT) w = Type::WidenMin; |
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1471 if (((julong)hi - lo) >= max_julong) w = Type::WidenMax; // TypeLong::LONG |
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1472 } else { |
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1473 if (((julong)lo - hi) <= SMALLINT) w = Type::WidenMin; |
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1474 if (((julong)lo - hi) >= max_julong) w = Type::WidenMin; // dual TypeLong::LONG |
0 | 1475 } |
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1476 return w; |
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1477 } |
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1478 |
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1479 const TypeLong *TypeLong::make( jlong lo, jlong hi, int w ) { |
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1480 w = normalize_long_widen(lo, hi, w); |
0 | 1481 return (TypeLong*)(new TypeLong(lo,hi,w))->hashcons(); |
1482 } | |
1483 | |
1484 | |
1485 //------------------------------meet------------------------------------------- | |
1486 // Compute the MEET of two types. It returns a new Type representation object | |
1487 // with reference count equal to the number of Types pointing at it. | |
1488 // Caller should wrap a Types around it. | |
1489 const Type *TypeLong::xmeet( const Type *t ) const { | |
1490 // Perform a fast test for common case; meeting the same types together. | |
1491 if( this == t ) return this; // Meeting same type? | |
1492 | |
1493 // Currently "this->_base" is a TypeLong | |
1494 switch (t->base()) { // Switch on original type | |
1495 case AnyPtr: // Mixing with oops happens when javac | |
1496 case RawPtr: // reuses local variables | |
1497 case OopPtr: | |
1498 case InstPtr: | |
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1499 case AryPtr: |
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1500 case MetadataPtr: |
0 | 1501 case KlassPtr: |
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1502 case NarrowOop: |
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1503 case NarrowKlass: |
0 | 1504 case Int: |
1505 case FloatTop: | |
1506 case FloatCon: | |
1507 case FloatBot: | |
1508 case DoubleTop: | |
1509 case DoubleCon: | |
1510 case DoubleBot: | |
1511 case Bottom: // Ye Olde Default | |
1512 return Type::BOTTOM; | |
1513 default: // All else is a mistake | |
1514 typerr(t); | |
1515 case Top: // No change | |
1516 return this; | |
1517 case Long: // Long vs Long? | |
1518 break; | |
1519 } | |
1520 | |
1521 // Expand covered set | |
1522 const TypeLong *r = t->is_long(); // Turn into a TypeLong | |
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1523 return make( MIN2(_lo,r->_lo), MAX2(_hi,r->_hi), MAX2(_widen,r->_widen) ); |
0 | 1524 } |
1525 | |
1526 //------------------------------xdual------------------------------------------ | |
1527 // Dual: reverse hi & lo; flip widen | |
1528 const Type *TypeLong::xdual() const { | |
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1529 int w = normalize_long_widen(_hi,_lo, WidenMax-_widen); |
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1530 return new TypeLong(_hi,_lo,w); |
0 | 1531 } |
1532 | |
1533 //------------------------------widen------------------------------------------ | |
1534 // Only happens for optimistic top-down optimizations. | |
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1535 const Type *TypeLong::widen( const Type *old, const Type* limit ) const { |
0 | 1536 // Coming from TOP or such; no widening |
1537 if( old->base() != Long ) return this; | |
1538 const TypeLong *ot = old->is_long(); | |
1539 | |
1540 // If new guy is equal to old guy, no widening | |
1541 if( _lo == ot->_lo && _hi == ot->_hi ) | |
1542 return old; | |
1543 | |
1544 // If new guy contains old, then we widened | |
1545 if( _lo <= ot->_lo && _hi >= ot->_hi ) { | |
1546 // New contains old | |
1547 // If new guy is already wider than old, no widening | |
1548 if( _widen > ot->_widen ) return this; | |
1549 // If old guy was a constant, do not bother | |
1550 if (ot->_lo == ot->_hi) return this; | |
1551 // Now widen new guy. | |
1552 // Check for widening too far | |
1553 if (_widen == WidenMax) { | |
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|
1554 jlong max = max_jlong; |
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1555 jlong min = min_jlong; |
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1556 if (limit->isa_long()) { |
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1557 max = limit->is_long()->_hi; |
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1558 min = limit->is_long()->_lo; |
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1559 } |
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1560 if (min < _lo && _hi < max) { |
0 | 1561 // If neither endpoint is extremal yet, push out the endpoint |
1562 // which is closer to its respective limit. | |
1563 if (_lo >= 0 || // easy common case | |
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1564 (julong)(_lo - min) >= (julong)(max - _hi)) { |
0 | 1565 // Try to widen to an unsigned range type of 32/63 bits: |
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1566 if (max >= max_juint && _hi < max_juint) |
0 | 1567 return make(_lo, max_juint, WidenMax); |
1568 else | |
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1569 return make(_lo, max, WidenMax); |
0 | 1570 } else { |
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1571 return make(min, _hi, WidenMax); |
0 | 1572 } |
1573 } | |
1574 return TypeLong::LONG; | |
1575 } | |
1576 // Returned widened new guy | |
1577 return make(_lo,_hi,_widen+1); | |
1578 } | |
1579 | |
1580 // If old guy contains new, then we probably widened too far & dropped to | |
1581 // bottom. Return the wider fellow. | |
1582 if ( ot->_lo <= _lo && ot->_hi >= _hi ) | |
1583 return old; | |
1584 | |
1585 // fatal("Long value range is not subset"); | |
1586 // return this; | |
1587 return TypeLong::LONG; | |
1588 } | |
1589 | |
1590 //------------------------------narrow---------------------------------------- | |
1591 // Only happens for pessimistic optimizations. | |
1592 const Type *TypeLong::narrow( const Type *old ) const { | |
1593 if (_lo >= _hi) return this; // already narrow enough | |
1594 if (old == NULL) return this; | |
1595 const TypeLong* ot = old->isa_long(); | |
1596 if (ot == NULL) return this; | |
1597 jlong olo = ot->_lo; | |
1598 jlong ohi = ot->_hi; | |
1599 | |
1600 // If new guy is equal to old guy, no narrowing | |
1601 if (_lo == olo && _hi == ohi) return old; | |
1602 | |
1603 // If old guy was maximum range, allow the narrowing | |
1604 if (olo == min_jlong && ohi == max_jlong) return this; | |
1605 | |
1606 if (_lo < olo || _hi > ohi) | |
1607 return this; // doesn't narrow; pretty wierd | |
1608 | |
1609 // The new type narrows the old type, so look for a "death march". | |
1610 // See comments on PhaseTransform::saturate. | |
1611 julong nrange = _hi - _lo; | |
1612 julong orange = ohi - olo; | |
1613 if (nrange < max_julong - 1 && nrange > (orange >> 1) + (SMALLINT*2)) { | |
1614 // Use the new type only if the range shrinks a lot. | |
1615 // We do not want the optimizer computing 2^31 point by point. | |
1616 return old; | |
1617 } | |
1618 | |
1619 return this; | |
1620 } | |
1621 | |
1622 //-----------------------------filter------------------------------------------ | |
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1623 const Type *TypeLong::filter_helper(const Type *kills, bool include_speculative) const { |
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1624 const TypeLong* ft = join_helper(kills, include_speculative)->isa_long(); |
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|
1625 if (ft == NULL || ft->empty()) |
0 | 1626 return Type::TOP; // Canonical empty value |
1627 if (ft->_widen < this->_widen) { | |
1628 // Do not allow the value of kill->_widen to affect the outcome. | |
1629 // The widen bits must be allowed to run freely through the graph. | |
1630 ft = TypeLong::make(ft->_lo, ft->_hi, this->_widen); | |
1631 } | |
1632 return ft; | |
1633 } | |
1634 | |
1635 //------------------------------eq--------------------------------------------- | |
1636 // Structural equality check for Type representations | |
1637 bool TypeLong::eq( const Type *t ) const { | |
1638 const TypeLong *r = t->is_long(); // Handy access | |
1639 return r->_lo == _lo && r->_hi == _hi && r->_widen == _widen; | |
1640 } | |
1641 | |
1642 //------------------------------hash------------------------------------------- | |
1643 // Type-specific hashing function. | |
1644 int TypeLong::hash(void) const { | |
1645 return (int)(_lo+_hi+_widen+(int)Type::Long); | |
1646 } | |
1647 | |
1648 //------------------------------is_finite-------------------------------------- | |
1649 // Has a finite value | |
1650 bool TypeLong::is_finite() const { | |
1651 return true; | |
1652 } | |
1653 | |
1654 //------------------------------dump2------------------------------------------ | |
1655 // Dump TypeLong | |
1656 #ifndef PRODUCT | |
1657 static const char* longnamenear(jlong x, const char* xname, char* buf, jlong n) { | |
1658 if (n > x) { | |
1659 if (n >= x + 10000) return NULL; | |
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|
1660 sprintf(buf, "%s+" JLONG_FORMAT, xname, n - x); |
0 | 1661 } else if (n < x) { |
1662 if (n <= x - 10000) return NULL; | |
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|
1663 sprintf(buf, "%s-" JLONG_FORMAT, xname, x - n); |
0 | 1664 } else { |
1665 return xname; | |
1666 } | |
1667 return buf; | |
1668 } | |
1669 | |
1670 static const char* longname(char* buf, jlong n) { | |
1671 const char* str; | |
1672 if (n == min_jlong) | |
1673 return "min"; | |
1674 else if (n < min_jlong + 10000) | |
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|
1675 sprintf(buf, "min+" JLONG_FORMAT, n - min_jlong); |
0 | 1676 else if (n == max_jlong) |
1677 return "max"; | |
1678 else if (n > max_jlong - 10000) | |
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|
1679 sprintf(buf, "max-" JLONG_FORMAT, max_jlong - n); |
0 | 1680 else if ((str = longnamenear(max_juint, "maxuint", buf, n)) != NULL) |
1681 return str; | |
1682 else if ((str = longnamenear(max_jint, "maxint", buf, n)) != NULL) | |
1683 return str; | |
1684 else if ((str = longnamenear(min_jint, "minint", buf, n)) != NULL) | |
1685 return str; | |
1686 else | |
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|
1687 sprintf(buf, JLONG_FORMAT, n); |
0 | 1688 return buf; |
1689 } | |
1690 | |
1691 void TypeLong::dump2( Dict &d, uint depth, outputStream *st ) const { | |
1692 char buf[80], buf2[80]; | |
1693 if (_lo == min_jlong && _hi == max_jlong) | |
1694 st->print("long"); | |
1695 else if (is_con()) | |
1696 st->print("long:%s", longname(buf, get_con())); | |
1697 else if (_hi == max_jlong) | |
1698 st->print("long:>=%s", longname(buf, _lo)); | |
1699 else if (_lo == min_jlong) | |
1700 st->print("long:<=%s", longname(buf, _hi)); | |
1701 else | |
1702 st->print("long:%s..%s", longname(buf, _lo), longname(buf2, _hi)); | |
1703 | |
1704 if (_widen != 0 && this != TypeLong::LONG) | |
1705 st->print(":%.*s", _widen, "wwww"); | |
1706 } | |
1707 #endif | |
1708 | |
1709 //------------------------------singleton-------------------------------------- | |
1710 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
1711 // constants | |
1712 bool TypeLong::singleton(void) const { | |
1713 return _lo >= _hi; | |
1714 } | |
1715 | |
1716 bool TypeLong::empty(void) const { | |
1717 return _lo > _hi; | |
1718 } | |
1719 | |
1720 //============================================================================= | |
1721 // Convenience common pre-built types. | |
1722 const TypeTuple *TypeTuple::IFBOTH; // Return both arms of IF as reachable | |
1723 const TypeTuple *TypeTuple::IFFALSE; | |
1724 const TypeTuple *TypeTuple::IFTRUE; | |
1725 const TypeTuple *TypeTuple::IFNEITHER; | |
1726 const TypeTuple *TypeTuple::LOOPBODY; | |
1727 const TypeTuple *TypeTuple::MEMBAR; | |
1728 const TypeTuple *TypeTuple::STORECONDITIONAL; | |
1729 const TypeTuple *TypeTuple::START_I2C; | |
1730 const TypeTuple *TypeTuple::INT_PAIR; | |
1731 const TypeTuple *TypeTuple::LONG_PAIR; | |
12323 | 1732 const TypeTuple *TypeTuple::INT_CC_PAIR; |
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1733 const TypeTuple *TypeTuple::LONG_CC_PAIR; |
0 | 1734 |
1735 | |
1736 //------------------------------make------------------------------------------- | |
1737 // Make a TypeTuple from the range of a method signature | |
1738 const TypeTuple *TypeTuple::make_range(ciSignature* sig) { | |
1739 ciType* return_type = sig->return_type(); | |
1740 uint total_fields = TypeFunc::Parms + return_type->size(); | |
1741 const Type **field_array = fields(total_fields); | |
1742 switch (return_type->basic_type()) { | |
1743 case T_LONG: | |
1744 field_array[TypeFunc::Parms] = TypeLong::LONG; | |
1745 field_array[TypeFunc::Parms+1] = Type::HALF; | |
1746 break; | |
1747 case T_DOUBLE: | |
1748 field_array[TypeFunc::Parms] = Type::DOUBLE; | |
1749 field_array[TypeFunc::Parms+1] = Type::HALF; | |
1750 break; | |
1751 case T_OBJECT: | |
1752 case T_ARRAY: | |
1753 case T_BOOLEAN: | |
1754 case T_CHAR: | |
1755 case T_FLOAT: | |
1756 case T_BYTE: | |
1757 case T_SHORT: | |
1758 case T_INT: | |
1759 field_array[TypeFunc::Parms] = get_const_type(return_type); | |
1760 break; | |
1761 case T_VOID: | |
1762 break; | |
1763 default: | |
1764 ShouldNotReachHere(); | |
1765 } | |
1766 return (TypeTuple*)(new TypeTuple(total_fields,field_array))->hashcons(); | |
1767 } | |
1768 | |
1769 // Make a TypeTuple from the domain of a method signature | |
1770 const TypeTuple *TypeTuple::make_domain(ciInstanceKlass* recv, ciSignature* sig) { | |
1771 uint total_fields = TypeFunc::Parms + sig->size(); | |
1772 | |
1773 uint pos = TypeFunc::Parms; | |
1774 const Type **field_array; | |
1775 if (recv != NULL) { | |
1776 total_fields++; | |
1777 field_array = fields(total_fields); | |
1778 // Use get_const_type here because it respects UseUniqueSubclasses: | |
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|
1779 field_array[pos++] = get_const_type(recv)->join_speculative(TypePtr::NOTNULL); |
0 | 1780 } else { |
1781 field_array = fields(total_fields); | |
1782 } | |
1783 | |
1784 int i = 0; | |
1785 while (pos < total_fields) { | |
1786 ciType* type = sig->type_at(i); | |
1787 | |
1788 switch (type->basic_type()) { | |
1789 case T_LONG: | |
1790 field_array[pos++] = TypeLong::LONG; | |
1791 field_array[pos++] = Type::HALF; | |
1792 break; | |
1793 case T_DOUBLE: | |
1794 field_array[pos++] = Type::DOUBLE; | |
1795 field_array[pos++] = Type::HALF; | |
1796 break; | |
1797 case T_OBJECT: | |
1798 case T_ARRAY: | |
23614 | 1799 case T_FLOAT: |
1800 case T_INT: | |
1801 field_array[pos++] = get_const_type(type); | |
1802 break; | |
0 | 1803 case T_BOOLEAN: |
1804 case T_CHAR: | |
1805 case T_BYTE: | |
1806 case T_SHORT: | |
23614 | 1807 field_array[pos++] = TypeInt::INT; |
0 | 1808 break; |
1809 default: | |
1810 ShouldNotReachHere(); | |
1811 } | |
1812 i++; | |
1813 } | |
1814 return (TypeTuple*)(new TypeTuple(total_fields,field_array))->hashcons(); | |
1815 } | |
1816 | |
1817 const TypeTuple *TypeTuple::make( uint cnt, const Type **fields ) { | |
1818 return (TypeTuple*)(new TypeTuple(cnt,fields))->hashcons(); | |
1819 } | |
1820 | |
1821 //------------------------------fields----------------------------------------- | |
1822 // Subroutine call type with space allocated for argument types | |
1823 const Type **TypeTuple::fields( uint arg_cnt ) { | |
1824 const Type **flds = (const Type **)(Compile::current()->type_arena()->Amalloc_4((TypeFunc::Parms+arg_cnt)*sizeof(Type*) )); | |
1825 flds[TypeFunc::Control ] = Type::CONTROL; | |
1826 flds[TypeFunc::I_O ] = Type::ABIO; | |
1827 flds[TypeFunc::Memory ] = Type::MEMORY; | |
1828 flds[TypeFunc::FramePtr ] = TypeRawPtr::BOTTOM; | |
1829 flds[TypeFunc::ReturnAdr] = Type::RETURN_ADDRESS; | |
1830 | |
1831 return flds; | |
1832 } | |
1833 | |
1834 //------------------------------meet------------------------------------------- | |
1835 // Compute the MEET of two types. It returns a new Type object. | |
1836 const Type *TypeTuple::xmeet( const Type *t ) const { | |
1837 // Perform a fast test for common case; meeting the same types together. | |
1838 if( this == t ) return this; // Meeting same type-rep? | |
1839 | |
1840 // Current "this->_base" is Tuple | |
1841 switch (t->base()) { // switch on original type | |
1842 | |
1843 case Bottom: // Ye Olde Default | |
1844 return t; | |
1845 | |
1846 default: // All else is a mistake | |
1847 typerr(t); | |
1848 | |
1849 case Tuple: { // Meeting 2 signatures? | |
1850 const TypeTuple *x = t->is_tuple(); | |
1851 assert( _cnt == x->_cnt, "" ); | |
1852 const Type **fields = (const Type **)(Compile::current()->type_arena()->Amalloc_4( _cnt*sizeof(Type*) )); | |
1853 for( uint i=0; i<_cnt; i++ ) | |
1854 fields[i] = field_at(i)->xmeet( x->field_at(i) ); | |
1855 return TypeTuple::make(_cnt,fields); | |
1856 } | |
1857 case Top: | |
1858 break; | |
1859 } | |
1860 return this; // Return the double constant | |
1861 } | |
1862 | |
1863 //------------------------------xdual------------------------------------------ | |
1864 // Dual: compute field-by-field dual | |
1865 const Type *TypeTuple::xdual() const { | |
1866 const Type **fields = (const Type **)(Compile::current()->type_arena()->Amalloc_4( _cnt*sizeof(Type*) )); | |
1867 for( uint i=0; i<_cnt; i++ ) | |
1868 fields[i] = _fields[i]->dual(); | |
1869 return new TypeTuple(_cnt,fields); | |
1870 } | |
1871 | |
1872 //------------------------------eq--------------------------------------------- | |
1873 // Structural equality check for Type representations | |
1874 bool TypeTuple::eq( const Type *t ) const { | |
1875 const TypeTuple *s = (const TypeTuple *)t; | |
1876 if (_cnt != s->_cnt) return false; // Unequal field counts | |
1877 for (uint i = 0; i < _cnt; i++) | |
1878 if (field_at(i) != s->field_at(i)) // POINTER COMPARE! NO RECURSION! | |
1879 return false; // Missed | |
1880 return true; | |
1881 } | |
1882 | |
1883 //------------------------------hash------------------------------------------- | |
1884 // Type-specific hashing function. | |
1885 int TypeTuple::hash(void) const { | |
1886 intptr_t sum = _cnt; | |
1887 for( uint i=0; i<_cnt; i++ ) | |
1888 sum += (intptr_t)_fields[i]; // Hash on pointers directly | |
1889 return sum; | |
1890 } | |
1891 | |
1892 //------------------------------dump2------------------------------------------ | |
1893 // Dump signature Type | |
1894 #ifndef PRODUCT | |
1895 void TypeTuple::dump2( Dict &d, uint depth, outputStream *st ) const { | |
1896 st->print("{"); | |
1897 if( !depth || d[this] ) { // Check for recursive print | |
1898 st->print("...}"); | |
1899 return; | |
1900 } | |
1901 d.Insert((void*)this, (void*)this); // Stop recursion | |
1902 if( _cnt ) { | |
1903 uint i; | |
1904 for( i=0; i<_cnt-1; i++ ) { | |
1905 st->print("%d:", i); | |
1906 _fields[i]->dump2(d, depth-1, st); | |
1907 st->print(", "); | |
1908 } | |
1909 st->print("%d:", i); | |
1910 _fields[i]->dump2(d, depth-1, st); | |
1911 } | |
1912 st->print("}"); | |
1913 } | |
1914 #endif | |
1915 | |
1916 //------------------------------singleton-------------------------------------- | |
1917 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
1918 // constants (Ldi nodes). Singletons are integer, float or double constants | |
1919 // or a single symbol. | |
1920 bool TypeTuple::singleton(void) const { | |
1921 return false; // Never a singleton | |
1922 } | |
1923 | |
1924 bool TypeTuple::empty(void) const { | |
1925 for( uint i=0; i<_cnt; i++ ) { | |
1926 if (_fields[i]->empty()) return true; | |
1927 } | |
1928 return false; | |
1929 } | |
1930 | |
1931 //============================================================================= | |
1932 // Convenience common pre-built types. | |
1933 | |
1934 inline const TypeInt* normalize_array_size(const TypeInt* size) { | |
1935 // Certain normalizations keep us sane when comparing types. | |
1936 // We do not want arrayOop variables to differ only by the wideness | |
1937 // of their index types. Pick minimum wideness, since that is the | |
1938 // forced wideness of small ranges anyway. | |
1939 if (size->_widen != Type::WidenMin) | |
1940 return TypeInt::make(size->_lo, size->_hi, Type::WidenMin); | |
1941 else | |
1942 return size; | |
1943 } | |
1944 | |
1945 //------------------------------make------------------------------------------- | |
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1946 const TypeAry* TypeAry::make(const Type* elem, const TypeInt* size, bool stable) { |
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1947 if (UseCompressedOops && elem->isa_oopptr()) { |
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1948 elem = elem->make_narrowoop(); |
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1949 } |
0 | 1950 size = normalize_array_size(size); |
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1951 return (TypeAry*)(new TypeAry(elem,size,stable))->hashcons(); |
0 | 1952 } |
1953 | |
1954 //------------------------------meet------------------------------------------- | |
1955 // Compute the MEET of two types. It returns a new Type object. | |
1956 const Type *TypeAry::xmeet( const Type *t ) const { | |
1957 // Perform a fast test for common case; meeting the same types together. | |
1958 if( this == t ) return this; // Meeting same type-rep? | |
1959 | |
1960 // Current "this->_base" is Ary | |
1961 switch (t->base()) { // switch on original type | |
1962 | |
1963 case Bottom: // Ye Olde Default | |
1964 return t; | |
1965 | |
1966 default: // All else is a mistake | |
1967 typerr(t); | |
1968 | |
1969 case Array: { // Meeting 2 arrays? | |
1970 const TypeAry *a = t->is_ary(); | |
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1971 return TypeAry::make(_elem->meet_speculative(a->_elem), |
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1972 _size->xmeet(a->_size)->is_int(), |
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1973 _stable & a->_stable); |
0 | 1974 } |
1975 case Top: | |
1976 break; | |
1977 } | |
1978 return this; // Return the double constant | |
1979 } | |
1980 | |
1981 //------------------------------xdual------------------------------------------ | |
1982 // Dual: compute field-by-field dual | |
1983 const Type *TypeAry::xdual() const { | |
1984 const TypeInt* size_dual = _size->dual()->is_int(); | |
1985 size_dual = normalize_array_size(size_dual); | |
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1986 return new TypeAry(_elem->dual(), size_dual, !_stable); |
0 | 1987 } |
1988 | |
1989 //------------------------------eq--------------------------------------------- | |
1990 // Structural equality check for Type representations | |
1991 bool TypeAry::eq( const Type *t ) const { | |
1992 const TypeAry *a = (const TypeAry*)t; | |
1993 return _elem == a->_elem && | |
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1994 _stable == a->_stable && |
0 | 1995 _size == a->_size; |
1996 } | |
1997 | |
1998 //------------------------------hash------------------------------------------- | |
1999 // Type-specific hashing function. | |
2000 int TypeAry::hash(void) const { | |
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2001 return (intptr_t)_elem + (intptr_t)_size + (_stable ? 43 : 0); |
0 | 2002 } |
2003 | |
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2004 /** |
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2005 * Return same type without a speculative part in the element |
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2006 */ |
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2007 const Type* TypeAry::remove_speculative() const { |
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2008 return make(_elem->remove_speculative(), _size, _stable); |
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2009 } |
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2010 |
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2011 //----------------------interface_vs_oop--------------------------------------- |
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2012 #ifdef ASSERT |
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2013 bool TypeAry::interface_vs_oop_helper(const Type *t) const { |
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2014 const TypeAry* t_ary = t->is_ary(); |
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2015 if (t_ary) { |
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2016 const TypePtr* this_ptr = _elem->make_ptr(); // In case we have narrow_oops |
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2017 const TypePtr* t_ptr = t_ary->_elem->make_ptr(); |
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2018 if(this_ptr != NULL && t_ptr != NULL) { |
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2019 return this_ptr->interface_vs_oop(t_ptr); |
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2020 } |
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2021 } |
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2022 return Type::interface_vs_oop_helper(t); |
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2023 } |
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2024 #endif |
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2025 |
0 | 2026 //------------------------------dump2------------------------------------------ |
2027 #ifndef PRODUCT | |
2028 void TypeAry::dump2( Dict &d, uint depth, outputStream *st ) const { | |
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2029 if (_stable) st->print("stable:"); |
0 | 2030 _elem->dump2(d, depth, st); |
2031 st->print("["); | |
2032 _size->dump2(d, depth, st); | |
2033 st->print("]"); | |
2034 } | |
2035 #endif | |
2036 | |
2037 //------------------------------singleton-------------------------------------- | |
2038 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
2039 // constants (Ldi nodes). Singletons are integer, float or double constants | |
2040 // or a single symbol. | |
2041 bool TypeAry::singleton(void) const { | |
2042 return false; // Never a singleton | |
2043 } | |
2044 | |
2045 bool TypeAry::empty(void) const { | |
2046 return _elem->empty() || _size->empty(); | |
2047 } | |
2048 | |
2049 //--------------------------ary_must_be_exact---------------------------------- | |
2050 bool TypeAry::ary_must_be_exact() const { | |
2051 if (!UseExactTypes) return false; | |
2052 // This logic looks at the element type of an array, and returns true | |
2053 // if the element type is either a primitive or a final instance class. | |
2054 // In such cases, an array built on this ary must have no subclasses. | |
2055 if (_elem == BOTTOM) return false; // general array not exact | |
2056 if (_elem == TOP ) return false; // inverted general array not exact | |
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2057 const TypeOopPtr* toop = NULL; |
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2058 if (UseCompressedOops && _elem->isa_narrowoop()) { |
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2059 toop = _elem->make_ptr()->isa_oopptr(); |
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2060 } else { |
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2061 toop = _elem->isa_oopptr(); |
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2062 } |
0 | 2063 if (!toop) return true; // a primitive type, like int |
2064 ciKlass* tklass = toop->klass(); | |
2065 if (tklass == NULL) return false; // unloaded class | |
2066 if (!tklass->is_loaded()) return false; // unloaded class | |
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2067 const TypeInstPtr* tinst; |
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2068 if (_elem->isa_narrowoop()) |
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2069 tinst = _elem->make_ptr()->isa_instptr(); |
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2070 else |
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2071 tinst = _elem->isa_instptr(); |
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2072 if (tinst) |
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2073 return tklass->as_instance_klass()->is_final(); |
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2074 const TypeAryPtr* tap; |
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2075 if (_elem->isa_narrowoop()) |
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2076 tap = _elem->make_ptr()->isa_aryptr(); |
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2077 else |
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2078 tap = _elem->isa_aryptr(); |
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2079 if (tap) |
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2080 return tap->ary()->ary_must_be_exact(); |
0 | 2081 return false; |
2082 } | |
2083 | |
6179
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2084 //==============================TypeVect======================================= |
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2085 // Convenience common pre-built types. |
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2086 const TypeVect *TypeVect::VECTS = NULL; // 32-bit vectors |
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2087 const TypeVect *TypeVect::VECTD = NULL; // 64-bit vectors |
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2088 const TypeVect *TypeVect::VECTX = NULL; // 128-bit vectors |
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2089 const TypeVect *TypeVect::VECTY = NULL; // 256-bit vectors |
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2090 |
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2091 //------------------------------make------------------------------------------- |
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2092 const TypeVect* TypeVect::make(const Type *elem, uint length) { |
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2093 BasicType elem_bt = elem->array_element_basic_type(); |
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2094 assert(is_java_primitive(elem_bt), "only primitive types in vector"); |
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2095 assert(length > 1 && is_power_of_2(length), "vector length is power of 2"); |
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2096 assert(Matcher::vector_size_supported(elem_bt, length), "length in range"); |
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2097 int size = length * type2aelembytes(elem_bt); |
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2098 switch (Matcher::vector_ideal_reg(size)) { |
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2099 case Op_VecS: |
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2100 return (TypeVect*)(new TypeVectS(elem, length))->hashcons(); |
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2101 case Op_RegL: |
6179
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2102 case Op_VecD: |
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2103 case Op_RegD: |
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2104 return (TypeVect*)(new TypeVectD(elem, length))->hashcons(); |
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2105 case Op_VecX: |
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2106 return (TypeVect*)(new TypeVectX(elem, length))->hashcons(); |
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2107 case Op_VecY: |
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2108 return (TypeVect*)(new TypeVectY(elem, length))->hashcons(); |
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2109 } |
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2110 ShouldNotReachHere(); |
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2111 return NULL; |
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2112 } |
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2113 |
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2114 //------------------------------meet------------------------------------------- |
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2115 // Compute the MEET of two types. It returns a new Type object. |
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2116 const Type *TypeVect::xmeet( const Type *t ) const { |
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2117 // Perform a fast test for common case; meeting the same types together. |
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2118 if( this == t ) return this; // Meeting same type-rep? |
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2119 |
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2120 // Current "this->_base" is Vector |
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2121 switch (t->base()) { // switch on original type |
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2122 |
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2123 case Bottom: // Ye Olde Default |
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2124 return t; |
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2125 |
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2126 default: // All else is a mistake |
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2127 typerr(t); |
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2128 |
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2129 case VectorS: |
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2130 case VectorD: |
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2131 case VectorX: |
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2132 case VectorY: { // Meeting 2 vectors? |
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2133 const TypeVect* v = t->is_vect(); |
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2134 assert( base() == v->base(), ""); |
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2135 assert(length() == v->length(), ""); |
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2136 assert(element_basic_type() == v->element_basic_type(), ""); |
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2137 return TypeVect::make(_elem->xmeet(v->_elem), _length); |
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2138 } |
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2139 case Top: |
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2140 break; |
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2141 } |
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2142 return this; |
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2143 } |
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2144 |
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2145 //------------------------------xdual------------------------------------------ |
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2146 // Dual: compute field-by-field dual |
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2147 const Type *TypeVect::xdual() const { |
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2148 return new TypeVect(base(), _elem->dual(), _length); |
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2149 } |
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2150 |
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2151 //------------------------------eq--------------------------------------------- |
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2152 // Structural equality check for Type representations |
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2153 bool TypeVect::eq(const Type *t) const { |
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2154 const TypeVect *v = t->is_vect(); |
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2155 return (_elem == v->_elem) && (_length == v->_length); |
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2156 } |
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2157 |
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2158 //------------------------------hash------------------------------------------- |
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2159 // Type-specific hashing function. |
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2160 int TypeVect::hash(void) const { |
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2161 return (intptr_t)_elem + (intptr_t)_length; |
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2162 } |
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2163 |
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2164 //------------------------------singleton-------------------------------------- |
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2165 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple |
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2166 // constants (Ldi nodes). Vector is singleton if all elements are the same |
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2167 // constant value (when vector is created with Replicate code). |
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2168 bool TypeVect::singleton(void) const { |
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2169 // There is no Con node for vectors yet. |
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2170 // return _elem->singleton(); |
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2171 return false; |
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2172 } |
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2173 |
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2174 bool TypeVect::empty(void) const { |
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2175 return _elem->empty(); |
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2176 } |
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2177 |
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2178 //------------------------------dump2------------------------------------------ |
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2179 #ifndef PRODUCT |
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2180 void TypeVect::dump2(Dict &d, uint depth, outputStream *st) const { |
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2181 switch (base()) { |
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2182 case VectorS: |
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2183 st->print("vectors["); break; |
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2184 case VectorD: |
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2185 st->print("vectord["); break; |
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2186 case VectorX: |
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2187 st->print("vectorx["); break; |
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2188 case VectorY: |
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2189 st->print("vectory["); break; |
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2190 default: |
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2191 ShouldNotReachHere(); |
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2192 } |
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2193 st->print("%d]:{", _length); |
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2194 _elem->dump2(d, depth, st); |
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2195 st->print("}"); |
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2196 } |
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2197 #endif |
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2198 |
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2199 |
0 | 2200 //============================================================================= |
2201 // Convenience common pre-built types. | |
2202 const TypePtr *TypePtr::NULL_PTR; | |
2203 const TypePtr *TypePtr::NOTNULL; | |
2204 const TypePtr *TypePtr::BOTTOM; | |
2205 | |
2206 //------------------------------meet------------------------------------------- | |
2207 // Meet over the PTR enum | |
2208 const TypePtr::PTR TypePtr::ptr_meet[TypePtr::lastPTR][TypePtr::lastPTR] = { | |
2209 // TopPTR, AnyNull, Constant, Null, NotNull, BotPTR, | |
2210 { /* Top */ TopPTR, AnyNull, Constant, Null, NotNull, BotPTR,}, | |
2211 { /* AnyNull */ AnyNull, AnyNull, Constant, BotPTR, NotNull, BotPTR,}, | |
2212 { /* Constant*/ Constant, Constant, Constant, BotPTR, NotNull, BotPTR,}, | |
2213 { /* Null */ Null, BotPTR, BotPTR, Null, BotPTR, BotPTR,}, | |
2214 { /* NotNull */ NotNull, NotNull, NotNull, BotPTR, NotNull, BotPTR,}, | |
2215 { /* BotPTR */ BotPTR, BotPTR, BotPTR, BotPTR, BotPTR, BotPTR,} | |
2216 }; | |
2217 | |
2218 //------------------------------make------------------------------------------- | |
2219 const TypePtr *TypePtr::make( TYPES t, enum PTR ptr, int offset ) { | |
2220 return (TypePtr*)(new TypePtr(t,ptr,offset))->hashcons(); | |
2221 } | |
2222 | |
2223 //------------------------------cast_to_ptr_type------------------------------- | |
2224 const Type *TypePtr::cast_to_ptr_type(PTR ptr) const { | |
2225 assert(_base == AnyPtr, "subclass must override cast_to_ptr_type"); | |
2226 if( ptr == _ptr ) return this; | |
2227 return make(_base, ptr, _offset); | |
2228 } | |
2229 | |
2230 //------------------------------get_con---------------------------------------- | |
2231 intptr_t TypePtr::get_con() const { | |
2232 assert( _ptr == Null, "" ); | |
2233 return _offset; | |
2234 } | |
2235 | |
2236 //------------------------------meet------------------------------------------- | |
2237 // Compute the MEET of two types. It returns a new Type object. | |
2238 const Type *TypePtr::xmeet( const Type *t ) const { | |
2239 // Perform a fast test for common case; meeting the same types together. | |
2240 if( this == t ) return this; // Meeting same type-rep? | |
2241 | |
2242 // Current "this->_base" is AnyPtr | |
2243 switch (t->base()) { // switch on original type | |
2244 case Int: // Mixing ints & oops happens when javac | |
2245 case Long: // reuses local variables | |
2246 case FloatTop: | |
2247 case FloatCon: | |
2248 case FloatBot: | |
2249 case DoubleTop: | |
2250 case DoubleCon: | |
2251 case DoubleBot: | |
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2252 case NarrowOop: |
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2253 case NarrowKlass: |
0 | 2254 case Bottom: // Ye Olde Default |
2255 return Type::BOTTOM; | |
2256 case Top: | |
2257 return this; | |
2258 | |
2259 case AnyPtr: { // Meeting to AnyPtrs | |
2260 const TypePtr *tp = t->is_ptr(); | |
2261 return make( AnyPtr, meet_ptr(tp->ptr()), meet_offset(tp->offset()) ); | |
2262 } | |
2263 case RawPtr: // For these, flip the call around to cut down | |
2264 case OopPtr: | |
2265 case InstPtr: // on the cases I have to handle. | |
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2266 case AryPtr: |
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2267 case MetadataPtr: |
0 | 2268 case KlassPtr: |
2269 return t->xmeet(this); // Call in reverse direction | |
2270 default: // All else is a mistake | |
2271 typerr(t); | |
2272 | |
2273 } | |
2274 return this; | |
2275 } | |
2276 | |
2277 //------------------------------meet_offset------------------------------------ | |
2278 int TypePtr::meet_offset( int offset ) const { | |
2279 // Either is 'TOP' offset? Return the other offset! | |
2280 if( _offset == OffsetTop ) return offset; | |
2281 if( offset == OffsetTop ) return _offset; | |
2282 // If either is different, return 'BOTTOM' offset | |
2283 if( _offset != offset ) return OffsetBot; | |
2284 return _offset; | |
2285 } | |
2286 | |
2287 //------------------------------dual_offset------------------------------------ | |
2288 int TypePtr::dual_offset( ) const { | |
2289 if( _offset == OffsetTop ) return OffsetBot;// Map 'TOP' into 'BOTTOM' | |
2290 if( _offset == OffsetBot ) return OffsetTop;// Map 'BOTTOM' into 'TOP' | |
2291 return _offset; // Map everything else into self | |
2292 } | |
2293 | |
2294 //------------------------------xdual------------------------------------------ | |
2295 // Dual: compute field-by-field dual | |
2296 const TypePtr::PTR TypePtr::ptr_dual[TypePtr::lastPTR] = { | |
2297 BotPTR, NotNull, Constant, Null, AnyNull, TopPTR | |
2298 }; | |
2299 const Type *TypePtr::xdual() const { | |
2300 return new TypePtr( AnyPtr, dual_ptr(), dual_offset() ); | |
2301 } | |
2302 | |
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2303 //------------------------------xadd_offset------------------------------------ |
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2304 int TypePtr::xadd_offset( intptr_t offset ) const { |
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2305 // Adding to 'TOP' offset? Return 'TOP'! |
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2306 if( _offset == OffsetTop || offset == OffsetTop ) return OffsetTop; |
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2307 // Adding to 'BOTTOM' offset? Return 'BOTTOM'! |
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2308 if( _offset == OffsetBot || offset == OffsetBot ) return OffsetBot; |
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2309 // Addition overflows or "accidentally" equals to OffsetTop? Return 'BOTTOM'! |
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2310 offset += (intptr_t)_offset; |
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2311 if (offset != (int)offset || offset == OffsetTop) return OffsetBot; |
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2312 |
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2313 // assert( _offset >= 0 && _offset+offset >= 0, "" ); |
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2314 // It is possible to construct a negative offset during PhaseCCP |
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2315 |
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2316 return (int)offset; // Sum valid offsets |
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2317 } |
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2318 |
0 | 2319 //------------------------------add_offset------------------------------------- |
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2320 const TypePtr *TypePtr::add_offset( intptr_t offset ) const { |
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2321 return make( AnyPtr, _ptr, xadd_offset(offset) ); |
0 | 2322 } |
2323 | |
2324 //------------------------------eq--------------------------------------------- | |
2325 // Structural equality check for Type representations | |
2326 bool TypePtr::eq( const Type *t ) const { | |
2327 const TypePtr *a = (const TypePtr*)t; | |
2328 return _ptr == a->ptr() && _offset == a->offset(); | |
2329 } | |
2330 | |
2331 //------------------------------hash------------------------------------------- | |
2332 // Type-specific hashing function. | |
2333 int TypePtr::hash(void) const { | |
2334 return _ptr + _offset; | |
2335 } | |
2336 | |
2337 //------------------------------dump2------------------------------------------ | |
2338 const char *const TypePtr::ptr_msg[TypePtr::lastPTR] = { | |
2339 "TopPTR","AnyNull","Constant","NULL","NotNull","BotPTR" | |
2340 }; | |
2341 | |
2342 #ifndef PRODUCT | |
2343 void TypePtr::dump2( Dict &d, uint depth, outputStream *st ) const { | |
2344 if( _ptr == Null ) st->print("NULL"); | |
2345 else st->print("%s *", ptr_msg[_ptr]); | |
2346 if( _offset == OffsetTop ) st->print("+top"); | |
2347 else if( _offset == OffsetBot ) st->print("+bot"); | |
2348 else if( _offset ) st->print("+%d", _offset); | |
2349 } | |
2350 #endif | |
2351 | |
2352 //------------------------------singleton-------------------------------------- | |
2353 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
2354 // constants | |
2355 bool TypePtr::singleton(void) const { | |
2356 // TopPTR, Null, AnyNull, Constant are all singletons | |
2357 return (_offset != OffsetBot) && !below_centerline(_ptr); | |
2358 } | |
2359 | |
2360 bool TypePtr::empty(void) const { | |
2361 return (_offset == OffsetTop) || above_centerline(_ptr); | |
2362 } | |
2363 | |
2364 //============================================================================= | |
2365 // Convenience common pre-built types. | |
2366 const TypeRawPtr *TypeRawPtr::BOTTOM; | |
2367 const TypeRawPtr *TypeRawPtr::NOTNULL; | |
2368 | |
2369 //------------------------------make------------------------------------------- | |
2370 const TypeRawPtr *TypeRawPtr::make( enum PTR ptr ) { | |
2371 assert( ptr != Constant, "what is the constant?" ); | |
2372 assert( ptr != Null, "Use TypePtr for NULL" ); | |
2373 return (TypeRawPtr*)(new TypeRawPtr(ptr,0))->hashcons(); | |
2374 } | |
2375 | |
2376 const TypeRawPtr *TypeRawPtr::make( address bits ) { | |
2377 assert( bits, "Use TypePtr for NULL" ); | |
2378 return (TypeRawPtr*)(new TypeRawPtr(Constant,bits))->hashcons(); | |
2379 } | |
2380 | |
2381 //------------------------------cast_to_ptr_type------------------------------- | |
2382 const Type *TypeRawPtr::cast_to_ptr_type(PTR ptr) const { | |
2383 assert( ptr != Constant, "what is the constant?" ); | |
2384 assert( ptr != Null, "Use TypePtr for NULL" ); | |
2385 assert( _bits==0, "Why cast a constant address?"); | |
2386 if( ptr == _ptr ) return this; | |
2387 return make(ptr); | |
2388 } | |
2389 | |
2390 //------------------------------get_con---------------------------------------- | |
2391 intptr_t TypeRawPtr::get_con() const { | |
2392 assert( _ptr == Null || _ptr == Constant, "" ); | |
2393 return (intptr_t)_bits; | |
2394 } | |
2395 | |
2396 //------------------------------meet------------------------------------------- | |
2397 // Compute the MEET of two types. It returns a new Type object. | |
2398 const Type *TypeRawPtr::xmeet( const Type *t ) const { | |
2399 // Perform a fast test for common case; meeting the same types together. | |
2400 if( this == t ) return this; // Meeting same type-rep? | |
2401 | |
2402 // Current "this->_base" is RawPtr | |
2403 switch( t->base() ) { // switch on original type | |
2404 case Bottom: // Ye Olde Default | |
2405 return t; | |
2406 case Top: | |
2407 return this; | |
2408 case AnyPtr: // Meeting to AnyPtrs | |
2409 break; | |
2410 case RawPtr: { // might be top, bot, any/not or constant | |
2411 enum PTR tptr = t->is_ptr()->ptr(); | |
2412 enum PTR ptr = meet_ptr( tptr ); | |
2413 if( ptr == Constant ) { // Cannot be equal constants, so... | |
2414 if( tptr == Constant && _ptr != Constant) return t; | |
2415 if( _ptr == Constant && tptr != Constant) return this; | |
2416 ptr = NotNull; // Fall down in lattice | |
2417 } | |
2418 return make( ptr ); | |
2419 } | |
2420 | |
2421 case OopPtr: | |
2422 case InstPtr: | |
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2423 case AryPtr: |
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2424 case MetadataPtr: |
0 | 2425 case KlassPtr: |
2426 return TypePtr::BOTTOM; // Oop meet raw is not well defined | |
2427 default: // All else is a mistake | |
2428 typerr(t); | |
2429 } | |
2430 | |
2431 // Found an AnyPtr type vs self-RawPtr type | |
2432 const TypePtr *tp = t->is_ptr(); | |
2433 switch (tp->ptr()) { | |
2434 case TypePtr::TopPTR: return this; | |
2435 case TypePtr::BotPTR: return t; | |
2436 case TypePtr::Null: | |
2437 if( _ptr == TypePtr::TopPTR ) return t; | |
2438 return TypeRawPtr::BOTTOM; | |
2439 case TypePtr::NotNull: return TypePtr::make( AnyPtr, meet_ptr(TypePtr::NotNull), tp->meet_offset(0) ); | |
2440 case TypePtr::AnyNull: | |
2441 if( _ptr == TypePtr::Constant) return this; | |
2442 return make( meet_ptr(TypePtr::AnyNull) ); | |
2443 default: ShouldNotReachHere(); | |
2444 } | |
2445 return this; | |
2446 } | |
2447 | |
2448 //------------------------------xdual------------------------------------------ | |
2449 // Dual: compute field-by-field dual | |
2450 const Type *TypeRawPtr::xdual() const { | |
2451 return new TypeRawPtr( dual_ptr(), _bits ); | |
2452 } | |
2453 | |
2454 //------------------------------add_offset------------------------------------- | |
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2455 const TypePtr *TypeRawPtr::add_offset( intptr_t offset ) const { |
0 | 2456 if( offset == OffsetTop ) return BOTTOM; // Undefined offset-> undefined pointer |
2457 if( offset == OffsetBot ) return BOTTOM; // Unknown offset-> unknown pointer | |
2458 if( offset == 0 ) return this; // No change | |
2459 switch (_ptr) { | |
2460 case TypePtr::TopPTR: | |
2461 case TypePtr::BotPTR: | |
2462 case TypePtr::NotNull: | |
2463 return this; | |
2464 case TypePtr::Null: | |
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2465 case TypePtr::Constant: { |
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2466 address bits = _bits+offset; |
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2467 if ( bits == 0 ) return TypePtr::NULL_PTR; |
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2468 return make( bits ); |
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2469 } |
0 | 2470 default: ShouldNotReachHere(); |
2471 } | |
2472 return NULL; // Lint noise | |
2473 } | |
2474 | |
2475 //------------------------------eq--------------------------------------------- | |
2476 // Structural equality check for Type representations | |
2477 bool TypeRawPtr::eq( const Type *t ) const { | |
2478 const TypeRawPtr *a = (const TypeRawPtr*)t; | |
2479 return _bits == a->_bits && TypePtr::eq(t); | |
2480 } | |
2481 | |
2482 //------------------------------hash------------------------------------------- | |
2483 // Type-specific hashing function. | |
2484 int TypeRawPtr::hash(void) const { | |
2485 return (intptr_t)_bits + TypePtr::hash(); | |
2486 } | |
2487 | |
2488 //------------------------------dump2------------------------------------------ | |
2489 #ifndef PRODUCT | |
2490 void TypeRawPtr::dump2( Dict &d, uint depth, outputStream *st ) const { | |
2491 if( _ptr == Constant ) | |
2492 st->print(INTPTR_FORMAT, _bits); | |
2493 else | |
2494 st->print("rawptr:%s", ptr_msg[_ptr]); | |
2495 } | |
2496 #endif | |
2497 | |
2498 //============================================================================= | |
2499 // Convenience common pre-built type. | |
2500 const TypeOopPtr *TypeOopPtr::BOTTOM; | |
2501 | |
163 | 2502 //------------------------------TypeOopPtr------------------------------------- |
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2503 TypeOopPtr::TypeOopPtr(TYPES t, PTR ptr, ciKlass* k, bool xk, ciObject* o, int offset, int instance_id, const TypeOopPtr* speculative, int inline_depth) |
163 | 2504 : TypePtr(t, ptr, offset), |
2505 _const_oop(o), _klass(k), | |
2506 _klass_is_exact(xk), | |
2507 _is_ptr_to_narrowoop(false), | |
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2508 _is_ptr_to_narrowklass(false), |
10278 | 2509 _is_ptr_to_boxed_value(false), |
12966 | 2510 _instance_id(instance_id), |
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2511 _speculative(speculative), |
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2512 _inline_depth(inline_depth){ |
10278 | 2513 if (Compile::current()->eliminate_boxing() && (t == InstPtr) && |
2514 (offset > 0) && xk && (k != 0) && k->is_instance_klass()) { | |
2515 _is_ptr_to_boxed_value = k->as_instance_klass()->is_boxed_value_offset(offset); | |
2516 } | |
163 | 2517 #ifdef _LP64 |
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2518 if (_offset != 0) { |
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2519 if (_offset == oopDesc::klass_offset_in_bytes()) { |
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2520 _is_ptr_to_narrowklass = UseCompressedClassPointers; |
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2521 } else if (klass() == NULL) { |
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2522 // Array with unknown body type |
163 | 2523 assert(this->isa_aryptr(), "only arrays without klass"); |
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2524 _is_ptr_to_narrowoop = UseCompressedOops; |
163 | 2525 } else if (this->isa_aryptr()) { |
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2526 _is_ptr_to_narrowoop = (UseCompressedOops && klass()->is_obj_array_klass() && |
163 | 2527 _offset != arrayOopDesc::length_offset_in_bytes()); |
2528 } else if (klass()->is_instance_klass()) { | |
2529 ciInstanceKlass* ik = klass()->as_instance_klass(); | |
2530 ciField* field = NULL; | |
2531 if (this->isa_klassptr()) { | |
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2532 // Perm objects don't use compressed references |
163 | 2533 } else if (_offset == OffsetBot || _offset == OffsetTop) { |
2534 // unsafe access | |
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2535 _is_ptr_to_narrowoop = UseCompressedOops; |
163 | 2536 } else { // exclude unsafe ops |
2537 assert(this->isa_instptr(), "must be an instance ptr."); | |
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2538 |
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2539 if (klass() == ciEnv::current()->Class_klass() && |
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2540 (_offset == java_lang_Class::klass_offset_in_bytes() || |
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2541 _offset == java_lang_Class::array_klass_offset_in_bytes())) { |
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2542 // Special hidden fields from the Class. |
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2543 assert(this->isa_instptr(), "must be an instance ptr."); |
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2544 _is_ptr_to_narrowoop = false; |
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2545 } else if (klass() == ciEnv::current()->Class_klass() && |
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2546 _offset >= InstanceMirrorKlass::offset_of_static_fields()) { |
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2547 // Static fields |
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2548 assert(o != NULL, "must be constant"); |
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2549 ciInstanceKlass* k = o->as_instance()->java_lang_Class_klass()->as_instance_klass(); |
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2550 ciField* field = k->get_field_by_offset(_offset, true); |
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2551 assert(field != NULL, "missing field"); |
163 | 2552 BasicType basic_elem_type = field->layout_type(); |
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2553 _is_ptr_to_narrowoop = UseCompressedOops && (basic_elem_type == T_OBJECT || |
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2554 basic_elem_type == T_ARRAY); |
163 | 2555 } else { |
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2556 // Instance fields which contains a compressed oop references. |
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2557 field = ik->get_field_by_offset(_offset, false); |
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2558 if (field != NULL) { |
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2559 BasicType basic_elem_type = field->layout_type(); |
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2560 _is_ptr_to_narrowoop = UseCompressedOops && (basic_elem_type == T_OBJECT || |
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2561 basic_elem_type == T_ARRAY); |
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2562 } else if (klass()->equals(ciEnv::current()->Object_klass())) { |
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2563 // Compile::find_alias_type() cast exactness on all types to verify |
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2564 // that it does not affect alias type. |
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2565 _is_ptr_to_narrowoop = UseCompressedOops; |
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2566 } else { |
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2567 // Type for the copy start in LibraryCallKit::inline_native_clone(). |
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2568 _is_ptr_to_narrowoop = UseCompressedOops; |
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2569 } |
163 | 2570 } |
2571 } | |
2572 } | |
2573 } | |
2574 #endif | |
2575 } | |
2576 | |
0 | 2577 //------------------------------make------------------------------------------- |
2578 const TypeOopPtr *TypeOopPtr::make(PTR ptr, | |
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2579 int offset, int instance_id, const TypeOopPtr* speculative, int inline_depth) { |
0 | 2580 assert(ptr != Constant, "no constant generic pointers"); |
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2581 ciKlass* k = Compile::current()->env()->Object_klass(); |
0 | 2582 bool xk = false; |
2583 ciObject* o = NULL; | |
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2584 return (TypeOopPtr*)(new TypeOopPtr(OopPtr, ptr, k, xk, o, offset, instance_id, speculative, inline_depth))->hashcons(); |
0 | 2585 } |
2586 | |
2587 | |
2588 //------------------------------cast_to_ptr_type------------------------------- | |
2589 const Type *TypeOopPtr::cast_to_ptr_type(PTR ptr) const { | |
2590 assert(_base == OopPtr, "subclass must override cast_to_ptr_type"); | |
2591 if( ptr == _ptr ) return this; | |
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2592 return make(ptr, _offset, _instance_id, _speculative, _inline_depth); |
0 | 2593 } |
2594 | |
247 | 2595 //-----------------------------cast_to_instance_id---------------------------- |
223 | 2596 const TypeOopPtr *TypeOopPtr::cast_to_instance_id(int instance_id) const { |
0 | 2597 // There are no instances of a general oop. |
2598 // Return self unchanged. | |
2599 return this; | |
2600 } | |
2601 | |
2602 //-----------------------------cast_to_exactness------------------------------- | |
2603 const Type *TypeOopPtr::cast_to_exactness(bool klass_is_exact) const { | |
2604 // There is no such thing as an exact general oop. | |
2605 // Return self unchanged. | |
2606 return this; | |
2607 } | |
2608 | |
2609 | |
2610 //------------------------------as_klass_type---------------------------------- | |
2611 // Return the klass type corresponding to this instance or array type. | |
2612 // It is the type that is loaded from an object of this type. | |
2613 const TypeKlassPtr* TypeOopPtr::as_klass_type() const { | |
2614 ciKlass* k = klass(); | |
2615 bool xk = klass_is_exact(); | |
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2616 if (k == NULL) |
0 | 2617 return TypeKlassPtr::OBJECT; |
2618 else | |
2619 return TypeKlassPtr::make(xk? Constant: NotNull, k, 0); | |
2620 } | |
2621 | |
12966 | 2622 const Type *TypeOopPtr::xmeet(const Type *t) const { |
2623 const Type* res = xmeet_helper(t); | |
2624 if (res->isa_oopptr() == NULL) { | |
2625 return res; | |
2626 } | |
2627 | |
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2628 const TypeOopPtr* res_oopptr = res->is_oopptr(); |
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2629 if (res_oopptr->speculative() != NULL) { |
12966 | 2630 // type->speculative() == NULL means that speculation is no better |
2631 // than type, i.e. type->speculative() == type. So there are 2 | |
2632 // ways to represent the fact that we have no useful speculative | |
2633 // data and we should use a single one to be able to test for | |
2634 // equality between types. Check whether type->speculative() == | |
2635 // type and set speculative to NULL if it is the case. | |
2636 if (res_oopptr->remove_speculative() == res_oopptr->speculative()) { | |
2637 return res_oopptr->remove_speculative(); | |
2638 } | |
2639 } | |
2640 | |
2641 return res; | |
2642 } | |
0 | 2643 |
2644 //------------------------------meet------------------------------------------- | |
2645 // Compute the MEET of two types. It returns a new Type object. | |
12966 | 2646 const Type *TypeOopPtr::xmeet_helper(const Type *t) const { |
0 | 2647 // Perform a fast test for common case; meeting the same types together. |
2648 if( this == t ) return this; // Meeting same type-rep? | |
2649 | |
2650 // Current "this->_base" is OopPtr | |
2651 switch (t->base()) { // switch on original type | |
2652 | |
2653 case Int: // Mixing ints & oops happens when javac | |
2654 case Long: // reuses local variables | |
2655 case FloatTop: | |
2656 case FloatCon: | |
2657 case FloatBot: | |
2658 case DoubleTop: | |
2659 case DoubleCon: | |
2660 case DoubleBot: | |
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2661 case NarrowOop: |
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2662 case NarrowKlass: |
0 | 2663 case Bottom: // Ye Olde Default |
2664 return Type::BOTTOM; | |
2665 case Top: | |
2666 return this; | |
2667 | |
2668 default: // All else is a mistake | |
2669 typerr(t); | |
2670 | |
2671 case RawPtr: | |
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2672 case MetadataPtr: |
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2673 case KlassPtr: |
0 | 2674 return TypePtr::BOTTOM; // Oop meet raw is not well defined |
2675 | |
2676 case AnyPtr: { | |
2677 // Found an AnyPtr type vs self-OopPtr type | |
2678 const TypePtr *tp = t->is_ptr(); | |
2679 int offset = meet_offset(tp->offset()); | |
2680 PTR ptr = meet_ptr(tp->ptr()); | |
2681 switch (tp->ptr()) { | |
2682 case Null: | |
2683 if (ptr == Null) return TypePtr::make(AnyPtr, ptr, offset); | |
2684 // else fall through: | |
2685 case TopPTR: | |
992 | 2686 case AnyNull: { |
2687 int instance_id = meet_instance_id(InstanceTop); | |
12966 | 2688 const TypeOopPtr* speculative = _speculative; |
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2689 return make(ptr, offset, instance_id, speculative, _inline_depth); |
992 | 2690 } |
0 | 2691 case BotPTR: |
2692 case NotNull: | |
2693 return TypePtr::make(AnyPtr, ptr, offset); | |
2694 default: typerr(t); | |
2695 } | |
2696 } | |
2697 | |
2698 case OopPtr: { // Meeting to other OopPtrs | |
2699 const TypeOopPtr *tp = t->is_oopptr(); | |
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2700 int instance_id = meet_instance_id(tp->instance_id()); |
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2701 const TypeOopPtr* speculative = xmeet_speculative(tp); |
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2702 int depth = meet_inline_depth(tp->inline_depth()); |
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2703 return make(meet_ptr(tp->ptr()), meet_offset(tp->offset()), instance_id, speculative, depth); |
0 | 2704 } |
2705 | |
2706 case InstPtr: // For these, flip the call around to cut down | |
2707 case AryPtr: | |
2708 return t->xmeet(this); // Call in reverse direction | |
2709 | |
2710 } // End of switch | |
2711 return this; // Return the double constant | |
2712 } | |
2713 | |
2714 | |
2715 //------------------------------xdual------------------------------------------ | |
2716 // Dual of a pure heap pointer. No relevant klass or oop information. | |
2717 const Type *TypeOopPtr::xdual() const { | |
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2718 assert(klass() == Compile::current()->env()->Object_klass(), "no klasses here"); |
0 | 2719 assert(const_oop() == NULL, "no constants here"); |
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2720 return new TypeOopPtr(_base, dual_ptr(), klass(), klass_is_exact(), const_oop(), dual_offset(), dual_instance_id(), dual_speculative(), dual_inline_depth()); |
0 | 2721 } |
2722 | |
2723 //--------------------------make_from_klass_common----------------------------- | |
2724 // Computes the element-type given a klass. | |
2725 const TypeOopPtr* TypeOopPtr::make_from_klass_common(ciKlass *klass, bool klass_change, bool try_for_exact) { | |
2726 if (klass->is_instance_klass()) { | |
2727 Compile* C = Compile::current(); | |
2728 Dependencies* deps = C->dependencies(); | |
2729 assert((deps != NULL) == (C->method() != NULL && C->method()->code_size() > 0), "sanity"); | |
2730 // Element is an instance | |
2731 bool klass_is_exact = false; | |
2732 if (klass->is_loaded()) { | |
2733 // Try to set klass_is_exact. | |
2734 ciInstanceKlass* ik = klass->as_instance_klass(); | |
2735 klass_is_exact = ik->is_final(); | |
2736 if (!klass_is_exact && klass_change | |
2737 && deps != NULL && UseUniqueSubclasses) { | |
2738 ciInstanceKlass* sub = ik->unique_concrete_subklass(); | |
2739 if (sub != NULL) { | |
2740 deps->assert_abstract_with_unique_concrete_subtype(ik, sub); | |
2741 klass = ik = sub; | |
2742 klass_is_exact = sub->is_final(); | |
2743 } | |
2744 } | |
2745 if (!klass_is_exact && try_for_exact | |
2746 && deps != NULL && UseExactTypes) { | |
2747 if (!ik->is_interface() && !ik->has_subklass()) { | |
2748 // Add a dependence; if concrete subclass added we need to recompile | |
2749 deps->assert_leaf_type(ik); | |
2750 klass_is_exact = true; | |
2751 } | |
2752 } | |
2753 } | |
2754 return TypeInstPtr::make(TypePtr::BotPTR, klass, klass_is_exact, NULL, 0); | |
2755 } else if (klass->is_obj_array_klass()) { | |
2756 // Element is an object array. Recursively call ourself. | |
2757 const TypeOopPtr *etype = TypeOopPtr::make_from_klass_common(klass->as_obj_array_klass()->element_klass(), false, try_for_exact); | |
2758 bool xk = etype->klass_is_exact(); | |
2759 const TypeAry* arr0 = TypeAry::make(etype, TypeInt::POS); | |
2760 // We used to pass NotNull in here, asserting that the sub-arrays | |
2761 // are all not-null. This is not true in generally, as code can | |
2762 // slam NULLs down in the subarrays. | |
2763 const TypeAryPtr* arr = TypeAryPtr::make(TypePtr::BotPTR, arr0, klass, xk, 0); | |
2764 return arr; | |
2765 } else if (klass->is_type_array_klass()) { | |
2766 // Element is an typeArray | |
2767 const Type* etype = get_const_basic_type(klass->as_type_array_klass()->element_type()); | |
2768 const TypeAry* arr0 = TypeAry::make(etype, TypeInt::POS); | |
2769 // We used to pass NotNull in here, asserting that the array pointer | |
2770 // is not-null. That was not true in general. | |
2771 const TypeAryPtr* arr = TypeAryPtr::make(TypePtr::BotPTR, arr0, klass, true, 0); | |
2772 return arr; | |
2773 } else { | |
2774 ShouldNotReachHere(); | |
2775 return NULL; | |
2776 } | |
2777 } | |
2778 | |
2779 //------------------------------make_from_constant----------------------------- | |
2780 // Make a java pointer from an oop constant | |
10278 | 2781 const TypeOopPtr* TypeOopPtr::make_from_constant(ciObject* o, |
2782 bool require_constant, | |
2783 bool is_autobox_cache) { | |
2784 assert(!o->is_null_object(), "null object not yet handled here."); | |
2785 ciKlass* klass = o->klass(); | |
2786 if (klass->is_instance_klass()) { | |
2787 // Element is an instance | |
2788 if (require_constant) { | |
2789 if (!o->can_be_constant()) return NULL; | |
2790 } else if (!o->should_be_constant()) { | |
2791 return TypeInstPtr::make(TypePtr::NotNull, klass, true, NULL, 0); | |
2792 } | |
2793 return TypeInstPtr::make(o); | |
2794 } else if (klass->is_obj_array_klass()) { | |
2795 // Element is an object array. Recursively call ourself. | |
2796 const TypeOopPtr *etype = | |
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2797 TypeOopPtr::make_from_klass_raw(klass->as_obj_array_klass()->element_klass()); |
10278 | 2798 if (is_autobox_cache) { |
2799 // The pointers in the autobox arrays are always non-null. | |
2800 etype = etype->cast_to_ptr_type(TypePtr::NotNull)->is_oopptr(); | |
2801 } | |
2802 const TypeAry* arr0 = TypeAry::make(etype, TypeInt::make(o->as_array()->length())); | |
2803 // We used to pass NotNull in here, asserting that the sub-arrays | |
2804 // are all not-null. This is not true in generally, as code can | |
2805 // slam NULLs down in the subarrays. | |
2806 if (require_constant) { | |
2807 if (!o->can_be_constant()) return NULL; | |
2808 } else if (!o->should_be_constant()) { | |
2809 return TypeAryPtr::make(TypePtr::NotNull, arr0, klass, true, 0); | |
2810 } | |
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2811 const TypeAryPtr* arr = TypeAryPtr::make(TypePtr::Constant, o, arr0, klass, true, 0, InstanceBot, NULL, InlineDepthBottom, is_autobox_cache); |
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2812 return arr; |
10278 | 2813 } else if (klass->is_type_array_klass()) { |
2814 // Element is an typeArray | |
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2815 const Type* etype = |
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2816 (Type*)get_const_basic_type(klass->as_type_array_klass()->element_type()); |
10278 | 2817 const TypeAry* arr0 = TypeAry::make(etype, TypeInt::make(o->as_array()->length())); |
2818 // We used to pass NotNull in here, asserting that the array pointer | |
2819 // is not-null. That was not true in general. | |
2820 if (require_constant) { | |
2821 if (!o->can_be_constant()) return NULL; | |
2822 } else if (!o->should_be_constant()) { | |
2823 return TypeAryPtr::make(TypePtr::NotNull, arr0, klass, true, 0); | |
2824 } | |
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2825 const TypeAryPtr* arr = TypeAryPtr::make(TypePtr::Constant, o, arr0, klass, true, 0); |
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2826 return arr; |
0 | 2827 } |
2828 | |
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2829 fatal("unhandled object type"); |
0 | 2830 return NULL; |
2831 } | |
2832 | |
2833 //------------------------------get_con---------------------------------------- | |
2834 intptr_t TypeOopPtr::get_con() const { | |
2835 assert( _ptr == Null || _ptr == Constant, "" ); | |
2836 assert( _offset >= 0, "" ); | |
2837 | |
2838 if (_offset != 0) { | |
2839 // After being ported to the compiler interface, the compiler no longer | |
2840 // directly manipulates the addresses of oops. Rather, it only has a pointer | |
2841 // to a handle at compile time. This handle is embedded in the generated | |
2842 // code and dereferenced at the time the nmethod is made. Until that time, | |
2843 // it is not reasonable to do arithmetic with the addresses of oops (we don't | |
2844 // have access to the addresses!). This does not seem to currently happen, | |
605 | 2845 // but this assertion here is to help prevent its occurence. |
0 | 2846 tty->print_cr("Found oop constant with non-zero offset"); |
2847 ShouldNotReachHere(); | |
2848 } | |
2849 | |
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2850 return (intptr_t)const_oop()->constant_encoding(); |
0 | 2851 } |
2852 | |
2853 | |
2854 //-----------------------------filter------------------------------------------ | |
2855 // Do not allow interface-vs.-noninterface joins to collapse to top. | |
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2856 const Type *TypeOopPtr::filter_helper(const Type *kills, bool include_speculative) const { |
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2857 |
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2858 const Type* ft = join_helper(kills, include_speculative); |
0 | 2859 const TypeInstPtr* ftip = ft->isa_instptr(); |
2860 const TypeInstPtr* ktip = kills->isa_instptr(); | |
2861 | |
2862 if (ft->empty()) { | |
2863 // Check for evil case of 'this' being a class and 'kills' expecting an | |
2864 // interface. This can happen because the bytecodes do not contain | |
2865 // enough type info to distinguish a Java-level interface variable | |
2866 // from a Java-level object variable. If we meet 2 classes which | |
2867 // both implement interface I, but their meet is at 'j/l/O' which | |
2868 // doesn't implement I, we have no way to tell if the result should | |
2869 // be 'I' or 'j/l/O'. Thus we'll pick 'j/l/O'. If this then flows | |
2870 // into a Phi which "knows" it's an Interface type we'll have to | |
2871 // uplift the type. | |
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2872 if (!empty()) { |
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2873 if (ktip != NULL && ktip->is_loaded() && ktip->klass()->is_interface()) { |
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2874 return kills; // Uplift to interface |
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2875 } |
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2876 // Also check for evil cases of 'this' being a class array |
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2877 // and 'kills' expecting an array of interfaces. |
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2878 Type::get_arrays_base_elements(ft, kills, NULL, &ktip); |
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2879 if (ktip != NULL && ktip->is_loaded() && ktip->klass()->is_interface()) { |
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2880 return kills; // Uplift to array of interface |
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2881 } |
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2882 } |
0 | 2883 |
2884 return Type::TOP; // Canonical empty value | |
2885 } | |
2886 | |
2887 // If we have an interface-typed Phi or cast and we narrow to a class type, | |
2888 // the join should report back the class. However, if we have a J/L/Object | |
2889 // class-typed Phi and an interface flows in, it's possible that the meet & | |
2890 // join report an interface back out. This isn't possible but happens | |
2891 // because the type system doesn't interact well with interfaces. | |
2892 if (ftip != NULL && ktip != NULL && | |
2893 ftip->is_loaded() && ftip->klass()->is_interface() && | |
2894 ktip->is_loaded() && !ktip->klass()->is_interface()) { | |
2895 // Happens in a CTW of rt.jar, 320-341, no extra flags | |
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2896 assert(!ftip->klass_is_exact(), "interface could not be exact"); |
0 | 2897 return ktip->cast_to_ptr_type(ftip->ptr()); |
2898 } | |
2899 | |
2900 return ft; | |
2901 } | |
2902 | |
2903 //------------------------------eq--------------------------------------------- | |
2904 // Structural equality check for Type representations | |
2905 bool TypeOopPtr::eq( const Type *t ) const { | |
2906 const TypeOopPtr *a = (const TypeOopPtr*)t; | |
2907 if (_klass_is_exact != a->_klass_is_exact || | |
12966 | 2908 _instance_id != a->_instance_id || |
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2909 !eq_speculative(a) || |
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2910 _inline_depth != a->_inline_depth) return false; |
0 | 2911 ciObject* one = const_oop(); |
2912 ciObject* two = a->const_oop(); | |
2913 if (one == NULL || two == NULL) { | |
2914 return (one == two) && TypePtr::eq(t); | |
2915 } else { | |
2916 return one->equals(two) && TypePtr::eq(t); | |
2917 } | |
2918 } | |
2919 | |
2920 //------------------------------hash------------------------------------------- | |
2921 // Type-specific hashing function. | |
2922 int TypeOopPtr::hash(void) const { | |
2923 return | |
2924 (const_oop() ? const_oop()->hash() : 0) + | |
2925 _klass_is_exact + | |
2926 _instance_id + | |
12966 | 2927 hash_speculative() + |
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2928 _inline_depth + |
0 | 2929 TypePtr::hash(); |
2930 } | |
2931 | |
2932 //------------------------------dump2------------------------------------------ | |
2933 #ifndef PRODUCT | |
2934 void TypeOopPtr::dump2( Dict &d, uint depth, outputStream *st ) const { | |
2935 st->print("oopptr:%s", ptr_msg[_ptr]); | |
2936 if( _klass_is_exact ) st->print(":exact"); | |
2937 if( const_oop() ) st->print(INTPTR_FORMAT, const_oop()); | |
2938 switch( _offset ) { | |
2939 case OffsetTop: st->print("+top"); break; | |
2940 case OffsetBot: st->print("+any"); break; | |
2941 case 0: break; | |
2942 default: st->print("+%d",_offset); break; | |
2943 } | |
223 | 2944 if (_instance_id == InstanceTop) |
2945 st->print(",iid=top"); | |
2946 else if (_instance_id != InstanceBot) | |
0 | 2947 st->print(",iid=%d",_instance_id); |
12966 | 2948 |
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2949 dump_inline_depth(st); |
12966 | 2950 dump_speculative(st); |
2951 } | |
2952 | |
2953 /** | |
2954 *dump the speculative part of the type | |
2955 */ | |
2956 void TypeOopPtr::dump_speculative(outputStream *st) const { | |
2957 if (_speculative != NULL) { | |
2958 st->print(" (speculative="); | |
2959 _speculative->dump_on(st); | |
2960 st->print(")"); | |
2961 } | |
0 | 2962 } |
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2963 |
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2964 void TypeOopPtr::dump_inline_depth(outputStream *st) const { |
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2965 if (_inline_depth != InlineDepthBottom) { |
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2966 if (_inline_depth == InlineDepthTop) { |
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2967 st->print(" (inline_depth=InlineDepthTop)"); |
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2968 } else { |
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2969 st->print(" (inline_depth=%d)", _inline_depth); |
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2970 } |
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2971 } |
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2972 } |
0 | 2973 #endif |
2974 | |
2975 //------------------------------singleton-------------------------------------- | |
2976 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
2977 // constants | |
2978 bool TypeOopPtr::singleton(void) const { | |
2979 // detune optimizer to not generate constant oop + constant offset as a constant! | |
2980 // TopPTR, Null, AnyNull, Constant are all singletons | |
2981 return (_offset == 0) && !below_centerline(_ptr); | |
2982 } | |
2983 | |
2984 //------------------------------add_offset------------------------------------- | |
12966 | 2985 const TypePtr *TypeOopPtr::add_offset(intptr_t offset) const { |
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2986 return make(_ptr, xadd_offset(offset), _instance_id, add_offset_speculative(offset), _inline_depth); |
12966 | 2987 } |
2988 | |
2989 /** | |
2990 * Return same type without a speculative part | |
2991 */ | |
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2992 const Type* TypeOopPtr::remove_speculative() const { |
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2993 if (_speculative == NULL) { |
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2994 return this; |
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2995 } |
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2996 assert(_inline_depth == InlineDepthTop || _inline_depth == InlineDepthBottom, "non speculative type shouldn't have inline depth"); |
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2997 return make(_ptr, _offset, _instance_id, NULL, _inline_depth); |
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2998 } |
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2999 |
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3000 /** |
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3001 * Return same type but with a different inline depth (used for speculation) |
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3002 * |
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3003 * @param depth depth to meet with |
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3004 */ |
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3005 const TypeOopPtr* TypeOopPtr::with_inline_depth(int depth) const { |
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3006 if (!UseInlineDepthForSpeculativeTypes) { |
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3007 return this; |
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3008 } |
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3009 return make(_ptr, _offset, _instance_id, _speculative, depth); |
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3010 } |
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3011 |
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3012 /** |
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3013 * Check whether new profiling would improve speculative type |
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3014 * |
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3015 * @param exact_kls class from profiling |
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3016 * @param inline_depth inlining depth of profile point |
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3017 * |
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3018 * @return true if type profile is valuable |
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3019 */ |
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3020 bool TypeOopPtr::would_improve_type(ciKlass* exact_kls, int inline_depth) const { |
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3021 // no way to improve an already exact type |
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3022 if (klass_is_exact()) { |
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3023 return false; |
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3024 } |
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3025 // no profiling? |
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3026 if (exact_kls == NULL) { |
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3027 return false; |
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3028 } |
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3029 // no speculative type or non exact speculative type? |
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3030 if (speculative_type() == NULL) { |
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3031 return true; |
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3032 } |
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3033 // If the node already has an exact speculative type keep it, |
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3034 // unless it was provided by profiling that is at a deeper |
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3035 // inlining level. Profiling at a higher inlining depth is |
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3036 // expected to be less accurate. |
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3037 if (_speculative->inline_depth() == InlineDepthBottom) { |
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3038 return false; |
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3039 } |
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3040 assert(_speculative->inline_depth() != InlineDepthTop, "can't do the comparison"); |
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3041 return inline_depth < _speculative->inline_depth(); |
0 | 3042 } |
3043 | |
223 | 3044 //------------------------------meet_instance_id-------------------------------- |
3045 int TypeOopPtr::meet_instance_id( int instance_id ) const { | |
3046 // Either is 'TOP' instance? Return the other instance! | |
3047 if( _instance_id == InstanceTop ) return instance_id; | |
3048 if( instance_id == InstanceTop ) return _instance_id; | |
3049 // If either is different, return 'BOTTOM' instance | |
3050 if( _instance_id != instance_id ) return InstanceBot; | |
3051 return _instance_id; | |
0 | 3052 } |
3053 | |
223 | 3054 //------------------------------dual_instance_id-------------------------------- |
3055 int TypeOopPtr::dual_instance_id( ) const { | |
3056 if( _instance_id == InstanceTop ) return InstanceBot; // Map TOP into BOTTOM | |
3057 if( _instance_id == InstanceBot ) return InstanceTop; // Map BOTTOM into TOP | |
3058 return _instance_id; // Map everything else into self | |
3059 } | |
3060 | |
12966 | 3061 /** |
3062 * meet of the speculative parts of 2 types | |
3063 * | |
3064 * @param other type to meet with | |
3065 */ | |
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3066 const TypeOopPtr* TypeOopPtr::xmeet_speculative(const TypeOopPtr* other) const { |
12966 | 3067 bool this_has_spec = (_speculative != NULL); |
3068 bool other_has_spec = (other->speculative() != NULL); | |
3069 | |
3070 if (!this_has_spec && !other_has_spec) { | |
3071 return NULL; | |
3072 } | |
3073 | |
3074 // If we are at a point where control flow meets and one branch has | |
3075 // a speculative type and the other has not, we meet the speculative | |
3076 // type of one branch with the actual type of the other. If the | |
3077 // actual type is exact and the speculative is as well, then the | |
3078 // result is a speculative type which is exact and we can continue | |
3079 // speculation further. | |
3080 const TypeOopPtr* this_spec = _speculative; | |
3081 const TypeOopPtr* other_spec = other->speculative(); | |
3082 | |
3083 if (!this_has_spec) { | |
3084 this_spec = this; | |
3085 } | |
3086 | |
3087 if (!other_has_spec) { | |
3088 other_spec = other; | |
3089 } | |
3090 | |
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3091 return this_spec->meet_speculative(other_spec)->is_oopptr(); |
12966 | 3092 } |
3093 | |
3094 /** | |
3095 * dual of the speculative part of the type | |
3096 */ | |
3097 const TypeOopPtr* TypeOopPtr::dual_speculative() const { | |
3098 if (_speculative == NULL) { | |
3099 return NULL; | |
3100 } | |
3101 return _speculative->dual()->is_oopptr(); | |
3102 } | |
3103 | |
3104 /** | |
3105 * add offset to the speculative part of the type | |
3106 * | |
3107 * @param offset offset to add | |
3108 */ | |
3109 const TypeOopPtr* TypeOopPtr::add_offset_speculative(intptr_t offset) const { | |
3110 if (_speculative == NULL) { | |
3111 return NULL; | |
3112 } | |
3113 return _speculative->add_offset(offset)->is_oopptr(); | |
3114 } | |
3115 | |
3116 /** | |
3117 * Are the speculative parts of 2 types equal? | |
3118 * | |
3119 * @param other type to compare this one to | |
3120 */ | |
3121 bool TypeOopPtr::eq_speculative(const TypeOopPtr* other) const { | |
3122 if (_speculative == NULL || other->speculative() == NULL) { | |
3123 return _speculative == other->speculative(); | |
3124 } | |
3125 | |
3126 if (_speculative->base() != other->speculative()->base()) { | |
3127 return false; | |
3128 } | |
3129 | |
3130 return _speculative->eq(other->speculative()); | |
3131 } | |
3132 | |
3133 /** | |
3134 * Hash of the speculative part of the type | |
3135 */ | |
3136 int TypeOopPtr::hash_speculative() const { | |
3137 if (_speculative == NULL) { | |
3138 return 0; | |
3139 } | |
3140 | |
3141 return _speculative->hash(); | |
3142 } | |
3143 | |
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3144 /** |
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3145 * dual of the inline depth for this type (used for speculation) |
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3146 */ |
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3147 int TypeOopPtr::dual_inline_depth() const { |
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3148 return -inline_depth(); |
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3149 } |
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3150 |
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3151 /** |
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3152 * meet of 2 inline depth (used for speculation) |
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3153 * |
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3154 * @param depth depth to meet with |
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3155 */ |
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3156 int TypeOopPtr::meet_inline_depth(int depth) const { |
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3157 return MAX2(inline_depth(), depth); |
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3158 } |
223 | 3159 |
0 | 3160 //============================================================================= |
3161 // Convenience common pre-built types. | |
3162 const TypeInstPtr *TypeInstPtr::NOTNULL; | |
3163 const TypeInstPtr *TypeInstPtr::BOTTOM; | |
3164 const TypeInstPtr *TypeInstPtr::MIRROR; | |
3165 const TypeInstPtr *TypeInstPtr::MARK; | |
3166 const TypeInstPtr *TypeInstPtr::KLASS; | |
3167 | |
3168 //------------------------------TypeInstPtr------------------------------------- | |
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3169 TypeInstPtr::TypeInstPtr(PTR ptr, ciKlass* k, bool xk, ciObject* o, int off, int instance_id, const TypeOopPtr* speculative, int inline_depth) |
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3170 : TypeOopPtr(InstPtr, ptr, k, xk, o, off, instance_id, speculative, inline_depth), _name(k->name()) { |
0 | 3171 assert(k != NULL && |
3172 (k->is_loaded() || o == NULL), | |
3173 "cannot have constants with non-loaded klass"); | |
3174 }; | |
3175 | |
3176 //------------------------------make------------------------------------------- | |
3177 const TypeInstPtr *TypeInstPtr::make(PTR ptr, | |
3178 ciKlass* k, | |
3179 bool xk, | |
3180 ciObject* o, | |
3181 int offset, | |
12966 | 3182 int instance_id, |
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3183 const TypeOopPtr* speculative, |
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3184 int inline_depth) { |
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3185 assert( !k->is_loaded() || k->is_instance_klass(), "Must be for instance"); |
0 | 3186 // Either const_oop() is NULL or else ptr is Constant |
3187 assert( (!o && ptr != Constant) || (o && ptr == Constant), | |
3188 "constant pointers must have a value supplied" ); | |
3189 // Ptr is never Null | |
3190 assert( ptr != Null, "NULL pointers are not typed" ); | |
3191 | |
247 | 3192 assert(instance_id <= 0 || xk || !UseExactTypes, "instances are always exactly typed"); |
0 | 3193 if (!UseExactTypes) xk = false; |
3194 if (ptr == Constant) { | |
3195 // Note: This case includes meta-object constants, such as methods. | |
3196 xk = true; | |
3197 } else if (k->is_loaded()) { | |
3198 ciInstanceKlass* ik = k->as_instance_klass(); | |
3199 if (!xk && ik->is_final()) xk = true; // no inexact final klass | |
3200 if (xk && ik->is_interface()) xk = false; // no exact interface | |
3201 } | |
3202 | |
3203 // Now hash this baby | |
3204 TypeInstPtr *result = | |
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3205 (TypeInstPtr*)(new TypeInstPtr(ptr, k, xk, o ,offset, instance_id, speculative, inline_depth))->hashcons(); |
0 | 3206 |
3207 return result; | |
3208 } | |
3209 | |
10278 | 3210 /** |
3211 * Create constant type for a constant boxed value | |
3212 */ | |
3213 const Type* TypeInstPtr::get_const_boxed_value() const { | |
3214 assert(is_ptr_to_boxed_value(), "should be called only for boxed value"); | |
3215 assert((const_oop() != NULL), "should be called only for constant object"); | |
3216 ciConstant constant = const_oop()->as_instance()->field_value_by_offset(offset()); | |
3217 BasicType bt = constant.basic_type(); | |
3218 switch (bt) { | |
3219 case T_BOOLEAN: return TypeInt::make(constant.as_boolean()); | |
3220 case T_INT: return TypeInt::make(constant.as_int()); | |
3221 case T_CHAR: return TypeInt::make(constant.as_char()); | |
3222 case T_BYTE: return TypeInt::make(constant.as_byte()); | |
3223 case T_SHORT: return TypeInt::make(constant.as_short()); | |
3224 case T_FLOAT: return TypeF::make(constant.as_float()); | |
3225 case T_DOUBLE: return TypeD::make(constant.as_double()); | |
3226 case T_LONG: return TypeLong::make(constant.as_long()); | |
3227 default: break; | |
3228 } | |
3229 fatal(err_msg_res("Invalid boxed value type '%s'", type2name(bt))); | |
3230 return NULL; | |
3231 } | |
0 | 3232 |
3233 //------------------------------cast_to_ptr_type------------------------------- | |
3234 const Type *TypeInstPtr::cast_to_ptr_type(PTR ptr) const { | |
3235 if( ptr == _ptr ) return this; | |
3236 // Reconstruct _sig info here since not a problem with later lazy | |
3237 // construction, _sig will show up on demand. | |
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3238 return make(ptr, klass(), klass_is_exact(), const_oop(), _offset, _instance_id, _speculative, _inline_depth); |
0 | 3239 } |
3240 | |
3241 | |
3242 //-----------------------------cast_to_exactness------------------------------- | |
3243 const Type *TypeInstPtr::cast_to_exactness(bool klass_is_exact) const { | |
3244 if( klass_is_exact == _klass_is_exact ) return this; | |
3245 if (!UseExactTypes) return this; | |
3246 if (!_klass->is_loaded()) return this; | |
3247 ciInstanceKlass* ik = _klass->as_instance_klass(); | |
3248 if( (ik->is_final() || _const_oop) ) return this; // cannot clear xk | |
3249 if( ik->is_interface() ) return this; // cannot set xk | |
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3250 return make(ptr(), klass(), klass_is_exact, const_oop(), _offset, _instance_id, _speculative, _inline_depth); |
0 | 3251 } |
3252 | |
247 | 3253 //-----------------------------cast_to_instance_id---------------------------- |
223 | 3254 const TypeOopPtr *TypeInstPtr::cast_to_instance_id(int instance_id) const { |
3255 if( instance_id == _instance_id ) return this; | |
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3256 return make(_ptr, klass(), _klass_is_exact, const_oop(), _offset, instance_id, _speculative, _inline_depth); |
0 | 3257 } |
3258 | |
3259 //------------------------------xmeet_unloaded--------------------------------- | |
3260 // Compute the MEET of two InstPtrs when at least one is unloaded. | |
3261 // Assume classes are different since called after check for same name/class-loader | |
3262 const TypeInstPtr *TypeInstPtr::xmeet_unloaded(const TypeInstPtr *tinst) const { | |
3263 int off = meet_offset(tinst->offset()); | |
3264 PTR ptr = meet_ptr(tinst->ptr()); | |
992 | 3265 int instance_id = meet_instance_id(tinst->instance_id()); |
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3266 const TypeOopPtr* speculative = xmeet_speculative(tinst); |
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3267 int depth = meet_inline_depth(tinst->inline_depth()); |
0 | 3268 |
3269 const TypeInstPtr *loaded = is_loaded() ? this : tinst; | |
3270 const TypeInstPtr *unloaded = is_loaded() ? tinst : this; | |
3271 if( loaded->klass()->equals(ciEnv::current()->Object_klass()) ) { | |
3272 // | |
3273 // Meet unloaded class with java/lang/Object | |
3274 // | |
3275 // Meet | |
3276 // | Unloaded Class | |
3277 // Object | TOP | AnyNull | Constant | NotNull | BOTTOM | | |
3278 // =================================================================== | |
3279 // TOP | ..........................Unloaded......................| | |
3280 // AnyNull | U-AN |................Unloaded......................| | |
3281 // Constant | ... O-NN .................................. | O-BOT | | |
3282 // NotNull | ... O-NN .................................. | O-BOT | | |
3283 // BOTTOM | ........................Object-BOTTOM ..................| | |
3284 // | |
3285 assert(loaded->ptr() != TypePtr::Null, "insanity check"); | |
3286 // | |
3287 if( loaded->ptr() == TypePtr::TopPTR ) { return unloaded; } | |
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3288 else if (loaded->ptr() == TypePtr::AnyNull) { return TypeInstPtr::make(ptr, unloaded->klass(), false, NULL, off, instance_id, speculative, depth); } |
0 | 3289 else if (loaded->ptr() == TypePtr::BotPTR ) { return TypeInstPtr::BOTTOM; } |
3290 else if (loaded->ptr() == TypePtr::Constant || loaded->ptr() == TypePtr::NotNull) { | |
3291 if (unloaded->ptr() == TypePtr::BotPTR ) { return TypeInstPtr::BOTTOM; } | |
3292 else { return TypeInstPtr::NOTNULL; } | |
3293 } | |
3294 else if( unloaded->ptr() == TypePtr::TopPTR ) { return unloaded; } | |
3295 | |
3296 return unloaded->cast_to_ptr_type(TypePtr::AnyNull)->is_instptr(); | |
3297 } | |
3298 | |
3299 // Both are unloaded, not the same class, not Object | |
3300 // Or meet unloaded with a different loaded class, not java/lang/Object | |
3301 if( ptr != TypePtr::BotPTR ) { | |
3302 return TypeInstPtr::NOTNULL; | |
3303 } | |
3304 return TypeInstPtr::BOTTOM; | |
3305 } | |
3306 | |
3307 | |
3308 //------------------------------meet------------------------------------------- | |
3309 // Compute the MEET of two types. It returns a new Type object. | |
12966 | 3310 const Type *TypeInstPtr::xmeet_helper(const Type *t) const { |
0 | 3311 // Perform a fast test for common case; meeting the same types together. |
3312 if( this == t ) return this; // Meeting same type-rep? | |
3313 | |
3314 // Current "this->_base" is Pointer | |
3315 switch (t->base()) { // switch on original type | |
3316 | |
3317 case Int: // Mixing ints & oops happens when javac | |
3318 case Long: // reuses local variables | |
3319 case FloatTop: | |
3320 case FloatCon: | |
3321 case FloatBot: | |
3322 case DoubleTop: | |
3323 case DoubleCon: | |
3324 case DoubleBot: | |
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3325 case NarrowOop: |
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3326 case NarrowKlass: |
0 | 3327 case Bottom: // Ye Olde Default |
3328 return Type::BOTTOM; | |
3329 case Top: | |
3330 return this; | |
3331 | |
3332 default: // All else is a mistake | |
3333 typerr(t); | |
3334 | |
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3335 case MetadataPtr: |
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3336 case KlassPtr: |
0 | 3337 case RawPtr: return TypePtr::BOTTOM; |
3338 | |
3339 case AryPtr: { // All arrays inherit from Object class | |
3340 const TypeAryPtr *tp = t->is_aryptr(); | |
3341 int offset = meet_offset(tp->offset()); | |
3342 PTR ptr = meet_ptr(tp->ptr()); | |
223 | 3343 int instance_id = meet_instance_id(tp->instance_id()); |
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3344 const TypeOopPtr* speculative = xmeet_speculative(tp); |
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3345 int depth = meet_inline_depth(tp->inline_depth()); |
0 | 3346 switch (ptr) { |
3347 case TopPTR: | |
3348 case AnyNull: // Fall 'down' to dual of object klass | |
12966 | 3349 // For instances when a subclass meets a superclass we fall |
3350 // below the centerline when the superclass is exact. We need to | |
3351 // do the same here. | |
3352 if (klass()->equals(ciEnv::current()->Object_klass()) && !klass_is_exact()) { | |
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3353 return TypeAryPtr::make(ptr, tp->ary(), tp->klass(), tp->klass_is_exact(), offset, instance_id, speculative, depth); |
0 | 3354 } else { |
3355 // cannot subclass, so the meet has to fall badly below the centerline | |
3356 ptr = NotNull; | |
223 | 3357 instance_id = InstanceBot; |
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3358 return TypeInstPtr::make( ptr, ciEnv::current()->Object_klass(), false, NULL, offset, instance_id, speculative, depth); |
0 | 3359 } |
3360 case Constant: | |
3361 case NotNull: | |
3362 case BotPTR: // Fall down to object klass | |
3363 // LCA is object_klass, but if we subclass from the top we can do better | |
3364 if( above_centerline(_ptr) ) { // if( _ptr == TopPTR || _ptr == AnyNull ) | |
3365 // If 'this' (InstPtr) is above the centerline and it is Object class | |
605 | 3366 // then we can subclass in the Java class hierarchy. |
12966 | 3367 // For instances when a subclass meets a superclass we fall |
3368 // below the centerline when the superclass is exact. We need | |
3369 // to do the same here. | |
3370 if (klass()->equals(ciEnv::current()->Object_klass()) && !klass_is_exact()) { | |
0 | 3371 // that is, tp's array type is a subtype of my klass |
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3372 return TypeAryPtr::make(ptr, (ptr == Constant ? tp->const_oop() : NULL), |
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3373 tp->ary(), tp->klass(), tp->klass_is_exact(), offset, instance_id, speculative, depth); |
0 | 3374 } |
3375 } | |
3376 // The other case cannot happen, since I cannot be a subtype of an array. | |
3377 // The meet falls down to Object class below centerline. | |
3378 if( ptr == Constant ) | |
3379 ptr = NotNull; | |
223 | 3380 instance_id = InstanceBot; |
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3381 return make(ptr, ciEnv::current()->Object_klass(), false, NULL, offset, instance_id, speculative, depth); |
0 | 3382 default: typerr(t); |
3383 } | |
3384 } | |
3385 | |
3386 case OopPtr: { // Meeting to OopPtrs | |
3387 // Found a OopPtr type vs self-InstPtr type | |
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3388 const TypeOopPtr *tp = t->is_oopptr(); |
0 | 3389 int offset = meet_offset(tp->offset()); |
3390 PTR ptr = meet_ptr(tp->ptr()); | |
3391 switch (tp->ptr()) { | |
3392 case TopPTR: | |
223 | 3393 case AnyNull: { |
3394 int instance_id = meet_instance_id(InstanceTop); | |
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3395 const TypeOopPtr* speculative = xmeet_speculative(tp); |
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3396 int depth = meet_inline_depth(tp->inline_depth()); |
0 | 3397 return make(ptr, klass(), klass_is_exact(), |
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3398 (ptr == Constant ? const_oop() : NULL), offset, instance_id, speculative, depth); |
223 | 3399 } |
0 | 3400 case NotNull: |
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3401 case BotPTR: { |
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3402 int instance_id = meet_instance_id(tp->instance_id()); |
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3403 const TypeOopPtr* speculative = xmeet_speculative(tp); |
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3404 int depth = meet_inline_depth(tp->inline_depth()); |
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3405 return TypeOopPtr::make(ptr, offset, instance_id, speculative, depth); |
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3406 } |
0 | 3407 default: typerr(t); |
3408 } | |
3409 } | |
3410 | |
3411 case AnyPtr: { // Meeting to AnyPtrs | |
3412 // Found an AnyPtr type vs self-InstPtr type | |
3413 const TypePtr *tp = t->is_ptr(); | |
3414 int offset = meet_offset(tp->offset()); | |
3415 PTR ptr = meet_ptr(tp->ptr()); | |
3416 switch (tp->ptr()) { | |
3417 case Null: | |
12966 | 3418 if( ptr == Null ) return TypePtr::make(AnyPtr, ptr, offset); |
223 | 3419 // else fall through to AnyNull |
0 | 3420 case TopPTR: |
223 | 3421 case AnyNull: { |
3422 int instance_id = meet_instance_id(InstanceTop); | |
12966 | 3423 const TypeOopPtr* speculative = _speculative; |
3424 return make(ptr, klass(), klass_is_exact(), | |
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3425 (ptr == Constant ? const_oop() : NULL), offset, instance_id, speculative, _inline_depth); |
223 | 3426 } |
0 | 3427 case NotNull: |
3428 case BotPTR: | |
12966 | 3429 return TypePtr::make(AnyPtr, ptr, offset); |
0 | 3430 default: typerr(t); |
3431 } | |
3432 } | |
3433 | |
3434 /* | |
3435 A-top } | |
3436 / | \ } Tops | |
3437 B-top A-any C-top } | |
3438 | / | \ | } Any-nulls | |
3439 B-any | C-any } | |
3440 | | | | |
3441 B-con A-con C-con } constants; not comparable across classes | |
3442 | | | | |
3443 B-not | C-not } | |
3444 | \ | / | } not-nulls | |
3445 B-bot A-not C-bot } | |
3446 \ | / } Bottoms | |
3447 A-bot } | |
3448 */ | |
3449 | |
3450 case InstPtr: { // Meeting 2 Oops? | |
3451 // Found an InstPtr sub-type vs self-InstPtr type | |
3452 const TypeInstPtr *tinst = t->is_instptr(); | |
3453 int off = meet_offset( tinst->offset() ); | |
3454 PTR ptr = meet_ptr( tinst->ptr() ); | |
223 | 3455 int instance_id = meet_instance_id(tinst->instance_id()); |
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3456 const TypeOopPtr* speculative = xmeet_speculative(tinst); |
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3457 int depth = meet_inline_depth(tinst->inline_depth()); |
0 | 3458 |
3459 // Check for easy case; klasses are equal (and perhaps not loaded!) | |
3460 // If we have constants, then we created oops so classes are loaded | |
3461 // and we can handle the constants further down. This case handles | |
3462 // both-not-loaded or both-loaded classes | |
3463 if (ptr != Constant && klass()->equals(tinst->klass()) && klass_is_exact() == tinst->klass_is_exact()) { | |
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3464 return make(ptr, klass(), klass_is_exact(), NULL, off, instance_id, speculative, depth); |
0 | 3465 } |
3466 | |
3467 // Classes require inspection in the Java klass hierarchy. Must be loaded. | |
3468 ciKlass* tinst_klass = tinst->klass(); | |
3469 ciKlass* this_klass = this->klass(); | |
3470 bool tinst_xk = tinst->klass_is_exact(); | |
3471 bool this_xk = this->klass_is_exact(); | |
3472 if (!tinst_klass->is_loaded() || !this_klass->is_loaded() ) { | |
3473 // One of these classes has not been loaded | |
3474 const TypeInstPtr *unloaded_meet = xmeet_unloaded(tinst); | |
3475 #ifndef PRODUCT | |
3476 if( PrintOpto && Verbose ) { | |
3477 tty->print("meet of unloaded classes resulted in: "); unloaded_meet->dump(); tty->cr(); | |
3478 tty->print(" this == "); this->dump(); tty->cr(); | |
3479 tty->print(" tinst == "); tinst->dump(); tty->cr(); | |
3480 } | |
3481 #endif | |
3482 return unloaded_meet; | |
3483 } | |
3484 | |
3485 // Handle mixing oops and interfaces first. | |
12966 | 3486 if( this_klass->is_interface() && !(tinst_klass->is_interface() || |
3487 tinst_klass == ciEnv::current()->Object_klass())) { | |
0 | 3488 ciKlass *tmp = tinst_klass; // Swap interface around |
3489 tinst_klass = this_klass; | |
3490 this_klass = tmp; | |
3491 bool tmp2 = tinst_xk; | |
3492 tinst_xk = this_xk; | |
3493 this_xk = tmp2; | |
3494 } | |
3495 if (tinst_klass->is_interface() && | |
3496 !(this_klass->is_interface() || | |
3497 // Treat java/lang/Object as an honorary interface, | |
3498 // because we need a bottom for the interface hierarchy. | |
3499 this_klass == ciEnv::current()->Object_klass())) { | |
3500 // Oop meets interface! | |
3501 | |
3502 // See if the oop subtypes (implements) interface. | |
3503 ciKlass *k; | |
3504 bool xk; | |
3505 if( this_klass->is_subtype_of( tinst_klass ) ) { | |
3506 // Oop indeed subtypes. Now keep oop or interface depending | |
3507 // on whether we are both above the centerline or either is | |
3508 // below the centerline. If we are on the centerline | |
3509 // (e.g., Constant vs. AnyNull interface), use the constant. | |
3510 k = below_centerline(ptr) ? tinst_klass : this_klass; | |
3511 // If we are keeping this_klass, keep its exactness too. | |
3512 xk = below_centerline(ptr) ? tinst_xk : this_xk; | |
3513 } else { // Does not implement, fall to Object | |
3514 // Oop does not implement interface, so mixing falls to Object | |
3515 // just like the verifier does (if both are above the | |
3516 // centerline fall to interface) | |
3517 k = above_centerline(ptr) ? tinst_klass : ciEnv::current()->Object_klass(); | |
3518 xk = above_centerline(ptr) ? tinst_xk : false; | |
3519 // Watch out for Constant vs. AnyNull interface. | |
3520 if (ptr == Constant) ptr = NotNull; // forget it was a constant | |
247 | 3521 instance_id = InstanceBot; |
0 | 3522 } |
3523 ciObject* o = NULL; // the Constant value, if any | |
3524 if (ptr == Constant) { | |
3525 // Find out which constant. | |
3526 o = (this_klass == klass()) ? const_oop() : tinst->const_oop(); | |
3527 } | |
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3528 return make(ptr, k, xk, o, off, instance_id, speculative, depth); |
0 | 3529 } |
3530 | |
3531 // Either oop vs oop or interface vs interface or interface vs Object | |
3532 | |
3533 // !!! Here's how the symmetry requirement breaks down into invariants: | |
3534 // If we split one up & one down AND they subtype, take the down man. | |
3535 // If we split one up & one down AND they do NOT subtype, "fall hard". | |
3536 // If both are up and they subtype, take the subtype class. | |
3537 // If both are up and they do NOT subtype, "fall hard". | |
3538 // If both are down and they subtype, take the supertype class. | |
3539 // If both are down and they do NOT subtype, "fall hard". | |
3540 // Constants treated as down. | |
3541 | |
3542 // Now, reorder the above list; observe that both-down+subtype is also | |
3543 // "fall hard"; "fall hard" becomes the default case: | |
3544 // If we split one up & one down AND they subtype, take the down man. | |
3545 // If both are up and they subtype, take the subtype class. | |
3546 | |
3547 // If both are down and they subtype, "fall hard". | |
3548 // If both are down and they do NOT subtype, "fall hard". | |
3549 // If both are up and they do NOT subtype, "fall hard". | |
3550 // If we split one up & one down AND they do NOT subtype, "fall hard". | |
3551 | |
3552 // If a proper subtype is exact, and we return it, we return it exactly. | |
3553 // If a proper supertype is exact, there can be no subtyping relationship! | |
3554 // If both types are equal to the subtype, exactness is and-ed below the | |
3555 // centerline and or-ed above it. (N.B. Constants are always exact.) | |
3556 | |
3557 // Check for subtyping: | |
3558 ciKlass *subtype = NULL; | |
3559 bool subtype_exact = false; | |
3560 if( tinst_klass->equals(this_klass) ) { | |
3561 subtype = this_klass; | |
3562 subtype_exact = below_centerline(ptr) ? (this_xk & tinst_xk) : (this_xk | tinst_xk); | |
3563 } else if( !tinst_xk && this_klass->is_subtype_of( tinst_klass ) ) { | |
3564 subtype = this_klass; // Pick subtyping class | |
3565 subtype_exact = this_xk; | |
3566 } else if( !this_xk && tinst_klass->is_subtype_of( this_klass ) ) { | |
3567 subtype = tinst_klass; // Pick subtyping class | |
3568 subtype_exact = tinst_xk; | |
3569 } | |
3570 | |
3571 if( subtype ) { | |
3572 if( above_centerline(ptr) ) { // both are up? | |
3573 this_klass = tinst_klass = subtype; | |
3574 this_xk = tinst_xk = subtype_exact; | |
3575 } else if( above_centerline(this ->_ptr) && !above_centerline(tinst->_ptr) ) { | |
3576 this_klass = tinst_klass; // tinst is down; keep down man | |
3577 this_xk = tinst_xk; | |
3578 } else if( above_centerline(tinst->_ptr) && !above_centerline(this ->_ptr) ) { | |
3579 tinst_klass = this_klass; // this is down; keep down man | |
3580 tinst_xk = this_xk; | |
3581 } else { | |
3582 this_xk = subtype_exact; // either they are equal, or we'll do an LCA | |
3583 } | |
3584 } | |
3585 | |
3586 // Check for classes now being equal | |
3587 if (tinst_klass->equals(this_klass)) { | |
3588 // If the klasses are equal, the constants may still differ. Fall to | |
3589 // NotNull if they do (neither constant is NULL; that is a special case | |
3590 // handled elsewhere). | |
3591 ciObject* o = NULL; // Assume not constant when done | |
3592 ciObject* this_oop = const_oop(); | |
3593 ciObject* tinst_oop = tinst->const_oop(); | |
3594 if( ptr == Constant ) { | |
3595 if (this_oop != NULL && tinst_oop != NULL && | |
3596 this_oop->equals(tinst_oop) ) | |
3597 o = this_oop; | |
3598 else if (above_centerline(this ->_ptr)) | |
3599 o = tinst_oop; | |
3600 else if (above_centerline(tinst ->_ptr)) | |
3601 o = this_oop; | |
3602 else | |
3603 ptr = NotNull; | |
3604 } | |
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3605 return make(ptr, this_klass, this_xk, o, off, instance_id, speculative, depth); |
0 | 3606 } // Else classes are not equal |
3607 | |
3608 // Since klasses are different, we require a LCA in the Java | |
3609 // class hierarchy - which means we have to fall to at least NotNull. | |
3610 if( ptr == TopPTR || ptr == AnyNull || ptr == Constant ) | |
3611 ptr = NotNull; | |
247 | 3612 instance_id = InstanceBot; |
0 | 3613 |
3614 // Now we find the LCA of Java classes | |
3615 ciKlass* k = this_klass->least_common_ancestor(tinst_klass); | |
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3616 return make(ptr, k, false, NULL, off, instance_id, speculative, depth); |
0 | 3617 } // End of case InstPtr |
3618 | |
3619 } // End of switch | |
3620 return this; // Return the double constant | |
3621 } | |
3622 | |
3623 | |
3624 //------------------------java_mirror_type-------------------------------------- | |
3625 ciType* TypeInstPtr::java_mirror_type() const { | |
3626 // must be a singleton type | |
3627 if( const_oop() == NULL ) return NULL; | |
3628 | |
3629 // must be of type java.lang.Class | |
3630 if( klass() != ciEnv::current()->Class_klass() ) return NULL; | |
3631 | |
3632 return const_oop()->as_instance()->java_mirror_type(); | |
3633 } | |
3634 | |
3635 | |
3636 //------------------------------xdual------------------------------------------ | |
3637 // Dual: do NOT dual on klasses. This means I do NOT understand the Java | |
605 | 3638 // inheritance mechanism. |
0 | 3639 const Type *TypeInstPtr::xdual() const { |
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3640 return new TypeInstPtr(dual_ptr(), klass(), klass_is_exact(), const_oop(), dual_offset(), dual_instance_id(), dual_speculative(), dual_inline_depth()); |
0 | 3641 } |
3642 | |
3643 //------------------------------eq--------------------------------------------- | |
3644 // Structural equality check for Type representations | |
3645 bool TypeInstPtr::eq( const Type *t ) const { | |
3646 const TypeInstPtr *p = t->is_instptr(); | |
3647 return | |
3648 klass()->equals(p->klass()) && | |
3649 TypeOopPtr::eq(p); // Check sub-type stuff | |
3650 } | |
3651 | |
3652 //------------------------------hash------------------------------------------- | |
3653 // Type-specific hashing function. | |
3654 int TypeInstPtr::hash(void) const { | |
3655 int hash = klass()->hash() + TypeOopPtr::hash(); | |
3656 return hash; | |
3657 } | |
3658 | |
3659 //------------------------------dump2------------------------------------------ | |
3660 // Dump oop Type | |
3661 #ifndef PRODUCT | |
3662 void TypeInstPtr::dump2( Dict &d, uint depth, outputStream *st ) const { | |
3663 // Print the name of the klass. | |
3664 klass()->print_name_on(st); | |
3665 | |
3666 switch( _ptr ) { | |
3667 case Constant: | |
3668 // TO DO: Make CI print the hex address of the underlying oop. | |
3669 if (WizardMode || Verbose) { | |
3670 const_oop()->print_oop(st); | |
3671 } | |
3672 case BotPTR: | |
3673 if (!WizardMode && !Verbose) { | |
3674 if( _klass_is_exact ) st->print(":exact"); | |
3675 break; | |
3676 } | |
3677 case TopPTR: | |
3678 case AnyNull: | |
3679 case NotNull: | |
3680 st->print(":%s", ptr_msg[_ptr]); | |
3681 if( _klass_is_exact ) st->print(":exact"); | |
3682 break; | |
3683 } | |
3684 | |
3685 if( _offset ) { // Dump offset, if any | |
3686 if( _offset == OffsetBot ) st->print("+any"); | |
3687 else if( _offset == OffsetTop ) st->print("+unknown"); | |
3688 else st->print("+%d", _offset); | |
3689 } | |
3690 | |
3691 st->print(" *"); | |
223 | 3692 if (_instance_id == InstanceTop) |
3693 st->print(",iid=top"); | |
3694 else if (_instance_id != InstanceBot) | |
0 | 3695 st->print(",iid=%d",_instance_id); |
12966 | 3696 |
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3697 dump_inline_depth(st); |
12966 | 3698 dump_speculative(st); |
0 | 3699 } |
3700 #endif | |
3701 | |
3702 //------------------------------add_offset------------------------------------- | |
12966 | 3703 const TypePtr *TypeInstPtr::add_offset(intptr_t offset) const { |
3704 return make(_ptr, klass(), klass_is_exact(), const_oop(), xadd_offset(offset), _instance_id, add_offset_speculative(offset)); | |
3705 } | |
3706 | |
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3707 const Type *TypeInstPtr::remove_speculative() const { |
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3708 if (_speculative == NULL) { |
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3709 return this; |
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3710 } |
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|
3711 assert(_inline_depth == InlineDepthTop || _inline_depth == InlineDepthBottom, "non speculative type shouldn't have inline depth"); |
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3712 return make(_ptr, klass(), klass_is_exact(), const_oop(), _offset, _instance_id, NULL, _inline_depth); |
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|
3713 } |
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|
3714 |
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|
3715 const TypeOopPtr *TypeInstPtr::with_inline_depth(int depth) const { |
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3716 if (!UseInlineDepthForSpeculativeTypes) { |
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|
3717 return this; |
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|
3718 } |
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|
3719 return make(_ptr, klass(), klass_is_exact(), const_oop(), _offset, _instance_id, _speculative, depth); |
0 | 3720 } |
3721 | |
3722 //============================================================================= | |
3723 // Convenience common pre-built types. | |
3724 const TypeAryPtr *TypeAryPtr::RANGE; | |
3725 const TypeAryPtr *TypeAryPtr::OOPS; | |
163 | 3726 const TypeAryPtr *TypeAryPtr::NARROWOOPS; |
0 | 3727 const TypeAryPtr *TypeAryPtr::BYTES; |
3728 const TypeAryPtr *TypeAryPtr::SHORTS; | |
3729 const TypeAryPtr *TypeAryPtr::CHARS; | |
3730 const TypeAryPtr *TypeAryPtr::INTS; | |
3731 const TypeAryPtr *TypeAryPtr::LONGS; | |
3732 const TypeAryPtr *TypeAryPtr::FLOATS; | |
3733 const TypeAryPtr *TypeAryPtr::DOUBLES; | |
3734 | |
3735 //------------------------------make------------------------------------------- | |
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3736 const TypeAryPtr *TypeAryPtr::make(PTR ptr, const TypeAry *ary, ciKlass* k, bool xk, int offset, int instance_id, const TypeOopPtr* speculative, int inline_depth) { |
0 | 3737 assert(!(k == NULL && ary->_elem->isa_int()), |
3738 "integral arrays must be pre-equipped with a class"); | |
3739 if (!xk) xk = ary->ary_must_be_exact(); | |
247 | 3740 assert(instance_id <= 0 || xk || !UseExactTypes, "instances are always exactly typed"); |
0 | 3741 if (!UseExactTypes) xk = (ptr == Constant); |
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3742 return (TypeAryPtr*)(new TypeAryPtr(ptr, NULL, ary, k, xk, offset, instance_id, false, speculative, inline_depth))->hashcons(); |
0 | 3743 } |
3744 | |
3745 //------------------------------make------------------------------------------- | |
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3746 const TypeAryPtr *TypeAryPtr::make(PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk, int offset, int instance_id, const TypeOopPtr* speculative, int inline_depth, bool is_autobox_cache) { |
0 | 3747 assert(!(k == NULL && ary->_elem->isa_int()), |
3748 "integral arrays must be pre-equipped with a class"); | |
3749 assert( (ptr==Constant && o) || (ptr!=Constant && !o), "" ); | |
3750 if (!xk) xk = (o != NULL) || ary->ary_must_be_exact(); | |
247 | 3751 assert(instance_id <= 0 || xk || !UseExactTypes, "instances are always exactly typed"); |
0 | 3752 if (!UseExactTypes) xk = (ptr == Constant); |
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3753 return (TypeAryPtr*)(new TypeAryPtr(ptr, o, ary, k, xk, offset, instance_id, is_autobox_cache, speculative, inline_depth))->hashcons(); |
0 | 3754 } |
3755 | |
3756 //------------------------------cast_to_ptr_type------------------------------- | |
3757 const Type *TypeAryPtr::cast_to_ptr_type(PTR ptr) const { | |
3758 if( ptr == _ptr ) return this; | |
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3759 return make(ptr, const_oop(), _ary, klass(), klass_is_exact(), _offset, _instance_id, _speculative, _inline_depth); |
0 | 3760 } |
3761 | |
3762 | |
3763 //-----------------------------cast_to_exactness------------------------------- | |
3764 const Type *TypeAryPtr::cast_to_exactness(bool klass_is_exact) const { | |
3765 if( klass_is_exact == _klass_is_exact ) return this; | |
3766 if (!UseExactTypes) return this; | |
3767 if (_ary->ary_must_be_exact()) return this; // cannot clear xk | |
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3768 return make(ptr(), const_oop(), _ary, klass(), klass_is_exact, _offset, _instance_id, _speculative, _inline_depth); |
0 | 3769 } |
3770 | |
247 | 3771 //-----------------------------cast_to_instance_id---------------------------- |
223 | 3772 const TypeOopPtr *TypeAryPtr::cast_to_instance_id(int instance_id) const { |
3773 if( instance_id == _instance_id ) return this; | |
17731
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3774 return make(_ptr, const_oop(), _ary, klass(), _klass_is_exact, _offset, instance_id, _speculative, _inline_depth); |
0 | 3775 } |
3776 | |
3777 //-----------------------------narrow_size_type------------------------------- | |
3778 // Local cache for arrayOopDesc::max_array_length(etype), | |
3779 // which is kind of slow (and cached elsewhere by other users). | |
3780 static jint max_array_length_cache[T_CONFLICT+1]; | |
3781 static jint max_array_length(BasicType etype) { | |
3782 jint& cache = max_array_length_cache[etype]; | |
3783 jint res = cache; | |
3784 if (res == 0) { | |
3785 switch (etype) { | |
113
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3786 case T_NARROWOOP: |
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3787 etype = T_OBJECT; |
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3788 break; |
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|
3789 case T_NARROWKLASS: |
0 | 3790 case T_CONFLICT: |
3791 case T_ILLEGAL: | |
3792 case T_VOID: | |
3793 etype = T_BYTE; // will produce conservatively high value | |
3794 } | |
3795 cache = res = arrayOopDesc::max_array_length(etype); | |
3796 } | |
3797 return res; | |
3798 } | |
3799 | |
3800 // Narrow the given size type to the index range for the given array base type. | |
3801 // Return NULL if the resulting int type becomes empty. | |
366
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3802 const TypeInt* TypeAryPtr::narrow_size_type(const TypeInt* size) const { |
0 | 3803 jint hi = size->_hi; |
3804 jint lo = size->_lo; | |
3805 jint min_lo = 0; | |
366
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3806 jint max_hi = max_array_length(elem()->basic_type()); |
0 | 3807 //if (index_not_size) --max_hi; // type of a valid array index, FTR |
3808 bool chg = false; | |
10278 | 3809 if (lo < min_lo) { |
3810 lo = min_lo; | |
3811 if (size->is_con()) { | |
3812 hi = lo; | |
3813 } | |
3814 chg = true; | |
3815 } | |
3816 if (hi > max_hi) { | |
3817 hi = max_hi; | |
3818 if (size->is_con()) { | |
3819 lo = hi; | |
3820 } | |
3821 chg = true; | |
3822 } | |
605 | 3823 // Negative length arrays will produce weird intermediate dead fast-path code |
0 | 3824 if (lo > hi) |
366
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3825 return TypeInt::ZERO; |
0 | 3826 if (!chg) |
3827 return size; | |
3828 return TypeInt::make(lo, hi, Type::WidenMin); | |
3829 } | |
3830 | |
3831 //-------------------------------cast_to_size---------------------------------- | |
3832 const TypeAryPtr* TypeAryPtr::cast_to_size(const TypeInt* new_size) const { | |
3833 assert(new_size != NULL, ""); | |
366
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|
3834 new_size = narrow_size_type(new_size); |
0 | 3835 if (new_size == size()) return this; |
12190
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|
3836 const TypeAry* new_ary = TypeAry::make(elem(), new_size, is_stable()); |
17731
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|
3837 return make(ptr(), const_oop(), new_ary, klass(), klass_is_exact(), _offset, _instance_id, _speculative, _inline_depth); |
0 | 3838 } |
3839 | |
3840 | |
12190
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3841 //------------------------------cast_to_stable--------------------------------- |
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3842 const TypeAryPtr* TypeAryPtr::cast_to_stable(bool stable, int stable_dimension) const { |
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3843 if (stable_dimension <= 0 || (stable_dimension == 1 && stable == this->is_stable())) |
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|
3844 return this; |
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|
3845 |
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3846 const Type* elem = this->elem(); |
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|
3847 const TypePtr* elem_ptr = elem->make_ptr(); |
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|
3848 |
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|
3849 if (stable_dimension > 1 && elem_ptr != NULL && elem_ptr->isa_aryptr()) { |
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3850 // If this is widened from a narrow oop, TypeAry::make will re-narrow it. |
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|
3851 elem = elem_ptr = elem_ptr->is_aryptr()->cast_to_stable(stable, stable_dimension - 1); |
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|
3852 } |
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|
3853 |
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3854 const TypeAry* new_ary = TypeAry::make(elem, size(), stable); |
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|
3855 |
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|
3856 return make(ptr(), const_oop(), new_ary, klass(), klass_is_exact(), _offset, _instance_id); |
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|
3857 } |
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|
3858 |
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|
3859 //-----------------------------stable_dimension-------------------------------- |
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|
3860 int TypeAryPtr::stable_dimension() const { |
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|
3861 if (!is_stable()) return 0; |
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vlivanov
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changeset
|
3862 int dim = 1; |
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changeset
|
3863 const TypePtr* elem_ptr = elem()->make_ptr(); |
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|
3864 if (elem_ptr != NULL && elem_ptr->isa_aryptr()) |
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|
3865 dim += elem_ptr->is_aryptr()->stable_dimension(); |
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|
3866 return dim; |
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|
3867 } |
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|
3868 |
0 | 3869 //------------------------------eq--------------------------------------------- |
3870 // Structural equality check for Type representations | |
3871 bool TypeAryPtr::eq( const Type *t ) const { | |
3872 const TypeAryPtr *p = t->is_aryptr(); | |
3873 return | |
3874 _ary == p->_ary && // Check array | |
3875 TypeOopPtr::eq(p); // Check sub-parts | |
3876 } | |
3877 | |
3878 //------------------------------hash------------------------------------------- | |
3879 // Type-specific hashing function. | |
3880 int TypeAryPtr::hash(void) const { | |
3881 return (intptr_t)_ary + TypeOopPtr::hash(); | |
3882 } | |
3883 | |
3884 //------------------------------meet------------------------------------------- | |
3885 // Compute the MEET of two types. It returns a new Type object. | |
12966 | 3886 const Type *TypeAryPtr::xmeet_helper(const Type *t) const { |
0 | 3887 // Perform a fast test for common case; meeting the same types together. |
3888 if( this == t ) return this; // Meeting same type-rep? | |
3889 // Current "this->_base" is Pointer | |
3890 switch (t->base()) { // switch on original type | |
3891 | |
3892 // Mixing ints & oops happens when javac reuses local variables | |
3893 case Int: | |
3894 case Long: | |
3895 case FloatTop: | |
3896 case FloatCon: | |
3897 case FloatBot: | |
3898 case DoubleTop: | |
3899 case DoubleCon: | |
3900 case DoubleBot: | |
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3901 case NarrowOop: |
6848
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|
3902 case NarrowKlass: |
0 | 3903 case Bottom: // Ye Olde Default |
3904 return Type::BOTTOM; | |
3905 case Top: | |
3906 return this; | |
3907 | |
3908 default: // All else is a mistake | |
3909 typerr(t); | |
3910 | |
3911 case OopPtr: { // Meeting to OopPtrs | |
3912 // Found a OopPtr type vs self-AryPtr type | |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
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827
diff
changeset
|
3913 const TypeOopPtr *tp = t->is_oopptr(); |
0 | 3914 int offset = meet_offset(tp->offset()); |
3915 PTR ptr = meet_ptr(tp->ptr()); | |
17731
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|
3916 int depth = meet_inline_depth(tp->inline_depth()); |
0 | 3917 switch (tp->ptr()) { |
3918 case TopPTR: | |
223 | 3919 case AnyNull: { |
3920 int instance_id = meet_instance_id(InstanceTop); | |
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|
3921 const TypeOopPtr* speculative = xmeet_speculative(tp); |
223 | 3922 return make(ptr, (ptr == Constant ? const_oop() : NULL), |
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|
3923 _ary, _klass, _klass_is_exact, offset, instance_id, speculative, depth); |
223 | 3924 } |
0 | 3925 case BotPTR: |
958
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|
3926 case NotNull: { |
c7e94e8fff43
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827
diff
changeset
|
3927 int instance_id = meet_instance_id(tp->instance_id()); |
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|
3928 const TypeOopPtr* speculative = xmeet_speculative(tp); |
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|
3929 return TypeOopPtr::make(ptr, offset, instance_id, speculative, depth); |
958
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|
3930 } |
0 | 3931 default: ShouldNotReachHere(); |
3932 } | |
3933 } | |
3934 | |
3935 case AnyPtr: { // Meeting two AnyPtrs | |
3936 // Found an AnyPtr type vs self-AryPtr type | |
3937 const TypePtr *tp = t->is_ptr(); | |
3938 int offset = meet_offset(tp->offset()); | |
3939 PTR ptr = meet_ptr(tp->ptr()); | |
3940 switch (tp->ptr()) { | |
3941 case TopPTR: | |
3942 return this; | |
3943 case BotPTR: | |
3944 case NotNull: | |
3945 return TypePtr::make(AnyPtr, ptr, offset); | |
3946 case Null: | |
3947 if( ptr == Null ) return TypePtr::make(AnyPtr, ptr, offset); | |
223 | 3948 // else fall through to AnyNull |
3949 case AnyNull: { | |
3950 int instance_id = meet_instance_id(InstanceTop); | |
12966 | 3951 const TypeOopPtr* speculative = _speculative; |
3952 return make(ptr, (ptr == Constant ? const_oop() : NULL), | |
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|
3953 _ary, _klass, _klass_is_exact, offset, instance_id, speculative, _inline_depth); |
223 | 3954 } |
0 | 3955 default: ShouldNotReachHere(); |
3956 } | |
3957 } | |
3958 | |
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|
3959 case MetadataPtr: |
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|
3960 case KlassPtr: |
0 | 3961 case RawPtr: return TypePtr::BOTTOM; |
3962 | |
3963 case AryPtr: { // Meeting 2 references? | |
3964 const TypeAryPtr *tap = t->is_aryptr(); | |
3965 int off = meet_offset(tap->offset()); | |
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3966 const TypeAry *tary = _ary->meet_speculative(tap->_ary)->is_ary(); |
0 | 3967 PTR ptr = meet_ptr(tap->ptr()); |
223 | 3968 int instance_id = meet_instance_id(tap->instance_id()); |
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|
3969 const TypeOopPtr* speculative = xmeet_speculative(tap); |
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|
3970 int depth = meet_inline_depth(tap->inline_depth()); |
0 | 3971 ciKlass* lazy_klass = NULL; |
3972 if (tary->_elem->isa_int()) { | |
3973 // Integral array element types have irrelevant lattice relations. | |
3974 // It is the klass that determines array layout, not the element type. | |
3975 if (_klass == NULL) | |
3976 lazy_klass = tap->_klass; | |
3977 else if (tap->_klass == NULL || tap->_klass == _klass) { | |
3978 lazy_klass = _klass; | |
3979 } else { | |
3980 // Something like byte[int+] meets char[int+]. | |
3981 // This must fall to bottom, not (int[-128..65535])[int+]. | |
247 | 3982 instance_id = InstanceBot; |
12190
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
10278
diff
changeset
|
3983 tary = TypeAry::make(Type::BOTTOM, tary->_size, tary->_stable); |
0 | 3984 } |
2351 | 3985 } else // Non integral arrays. |
14228 | 3986 // Must fall to bottom if exact klasses in upper lattice |
3987 // are not equal or super klass is exact. | |
3988 if ((above_centerline(ptr) || ptr == Constant) && klass() != tap->klass() && | |
3989 // meet with top[] and bottom[] are processed further down: | |
3990 tap->_klass != NULL && this->_klass != NULL && | |
3991 // both are exact and not equal: | |
3992 ((tap->_klass_is_exact && this->_klass_is_exact) || | |
3993 // 'tap' is exact and super or unrelated: | |
3994 (tap->_klass_is_exact && !tap->klass()->is_subtype_of(klass())) || | |
3995 // 'this' is exact and super or unrelated: | |
3996 (this->_klass_is_exact && !klass()->is_subtype_of(tap->klass())))) { | |
22943
2163da41681e
8075587: Compilation of constant array containing different sub classes crashes the JVM
roland
parents:
20360
diff
changeset
|
3997 if (above_centerline(ptr)) { |
2163da41681e
8075587: Compilation of constant array containing different sub classes crashes the JVM
roland
parents:
20360
diff
changeset
|
3998 tary = TypeAry::make(Type::BOTTOM, tary->_size, tary->_stable); |
2163da41681e
8075587: Compilation of constant array containing different sub classes crashes the JVM
roland
parents:
20360
diff
changeset
|
3999 } |
12966 | 4000 return make(NotNull, NULL, tary, lazy_klass, false, off, InstanceBot); |
0 | 4001 } |
2351 | 4002 |
1765
114e6b93e9e1
6980978: assert(mt == t->xmeet(this)) failed: meet not commutative
kvn
parents:
1761
diff
changeset
|
4003 bool xk = false; |
0 | 4004 switch (tap->ptr()) { |
4005 case AnyNull: | |
4006 case TopPTR: | |
4007 // Compute new klass on demand, do not use tap->_klass | |
12966 | 4008 if (below_centerline(this->_ptr)) { |
4009 xk = this->_klass_is_exact; | |
4010 } else { | |
4011 xk = (tap->_klass_is_exact | this->_klass_is_exact); | |
4012 } | |
17731
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4013 return make(ptr, const_oop(), tary, lazy_klass, xk, off, instance_id, speculative, depth); |
0 | 4014 case Constant: { |
4015 ciObject* o = const_oop(); | |
4016 if( _ptr == Constant ) { | |
4017 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
|
4018 xk = (klass() == tap->klass()); |
0 | 4019 ptr = NotNull; |
4020 o = NULL; | |
247 | 4021 instance_id = InstanceBot; |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
958
diff
changeset
|
4022 } else { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
958
diff
changeset
|
4023 xk = true; |
0 | 4024 } |
12966 | 4025 } else if(above_centerline(_ptr)) { |
0 | 4026 o = tap->const_oop(); |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
958
diff
changeset
|
4027 xk = true; |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
958
diff
changeset
|
4028 } else { |
1765
114e6b93e9e1
6980978: assert(mt == t->xmeet(this)) failed: meet not commutative
kvn
parents:
1761
diff
changeset
|
4029 // Only precise for identical arrays |
114e6b93e9e1
6980978: assert(mt == t->xmeet(this)) failed: meet not commutative
kvn
parents:
1761
diff
changeset
|
4030 xk = this->_klass_is_exact && (klass() == tap->klass()); |
0 | 4031 } |
17731
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4032 return TypeAryPtr::make(ptr, o, tary, lazy_klass, xk, off, instance_id, speculative, depth); |
0 | 4033 } |
4034 case NotNull: | |
4035 case BotPTR: | |
4036 // Compute new klass on demand, do not use tap->_klass | |
4037 if (above_centerline(this->_ptr)) | |
4038 xk = tap->_klass_is_exact; | |
4039 else xk = (tap->_klass_is_exact & this->_klass_is_exact) && | |
4040 (klass() == tap->klass()); // Only precise for identical arrays | |
17731
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4041 return TypeAryPtr::make(ptr, NULL, tary, lazy_klass, xk, off, instance_id, speculative, depth); |
0 | 4042 default: ShouldNotReachHere(); |
4043 } | |
4044 } | |
4045 | |
4046 // All arrays inherit from Object class | |
4047 case InstPtr: { | |
4048 const TypeInstPtr *tp = t->is_instptr(); | |
4049 int offset = meet_offset(tp->offset()); | |
4050 PTR ptr = meet_ptr(tp->ptr()); | |
223 | 4051 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
|
4052 const TypeOopPtr* speculative = xmeet_speculative(tp); |
17731
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4053 int depth = meet_inline_depth(tp->inline_depth()); |
0 | 4054 switch (ptr) { |
4055 case TopPTR: | |
4056 case AnyNull: // Fall 'down' to dual of object klass | |
12966 | 4057 // For instances when a subclass meets a superclass we fall |
4058 // below the centerline when the superclass is exact. We need to | |
4059 // do the same here. | |
4060 if (tp->klass()->equals(ciEnv::current()->Object_klass()) && !tp->klass_is_exact()) { | |
17731
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4061 return TypeAryPtr::make(ptr, _ary, _klass, _klass_is_exact, offset, instance_id, speculative, depth); |
0 | 4062 } else { |
4063 // cannot subclass, so the meet has to fall badly below the centerline | |
4064 ptr = NotNull; | |
223 | 4065 instance_id = InstanceBot; |
17731
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4066 return TypeInstPtr::make(ptr, ciEnv::current()->Object_klass(), false, NULL,offset, instance_id, speculative, depth); |
0 | 4067 } |
4068 case Constant: | |
4069 case NotNull: | |
4070 case BotPTR: // Fall down to object klass | |
4071 // LCA is object_klass, but if we subclass from the top we can do better | |
4072 if (above_centerline(tp->ptr())) { | |
4073 // If 'tp' is above the centerline and it is Object class | |
605 | 4074 // then we can subclass in the Java class hierarchy. |
12966 | 4075 // For instances when a subclass meets a superclass we fall |
4076 // below the centerline when the superclass is exact. We need | |
4077 // to do the same here. | |
4078 if (tp->klass()->equals(ciEnv::current()->Object_klass()) && !tp->klass_is_exact()) { | |
0 | 4079 // that is, my array type is a subtype of 'tp' klass |
12966 | 4080 return make(ptr, (ptr == Constant ? const_oop() : NULL), |
17731
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4081 _ary, _klass, _klass_is_exact, offset, instance_id, speculative, depth); |
0 | 4082 } |
4083 } | |
4084 // The other case cannot happen, since t cannot be a subtype of an array. | |
4085 // The meet falls down to Object class below centerline. | |
4086 if( ptr == Constant ) | |
4087 ptr = NotNull; | |
223 | 4088 instance_id = InstanceBot; |
17731
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4089 return TypeInstPtr::make(ptr, ciEnv::current()->Object_klass(), false, NULL,offset, instance_id, speculative, depth); |
0 | 4090 default: typerr(t); |
4091 } | |
4092 } | |
4093 } | |
4094 return this; // Lint noise | |
4095 } | |
4096 | |
4097 //------------------------------xdual------------------------------------------ | |
4098 // Dual: compute field-by-field dual | |
4099 const Type *TypeAryPtr::xdual() const { | |
17731
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4100 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(), dual_inline_depth()); |
0 | 4101 } |
4102 | |
820
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4103 //----------------------interface_vs_oop--------------------------------------- |
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4104 #ifdef ASSERT |
23293
071a85b9e631
Fix interface_vs_oop assertion logic for array types
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
23286
diff
changeset
|
4105 bool TypeAryPtr::interface_vs_oop_helper(const Type *t) const { |
820
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4106 const TypeAryPtr* t_aryptr = t->isa_aryptr(); |
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4107 if (t_aryptr) { |
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4108 return _ary->interface_vs_oop(t_aryptr->_ary); |
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4109 } |
23293
071a85b9e631
Fix interface_vs_oop assertion logic for array types
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
23286
diff
changeset
|
4110 return Type::interface_vs_oop_helper(t); |
820
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4111 } |
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4112 #endif |
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4113 |
0 | 4114 //------------------------------dump2------------------------------------------ |
4115 #ifndef PRODUCT | |
4116 void TypeAryPtr::dump2( Dict &d, uint depth, outputStream *st ) const { | |
4117 _ary->dump2(d,depth,st); | |
4118 switch( _ptr ) { | |
4119 case Constant: | |
4120 const_oop()->print(st); | |
4121 break; | |
4122 case BotPTR: | |
4123 if (!WizardMode && !Verbose) { | |
4124 if( _klass_is_exact ) st->print(":exact"); | |
4125 break; | |
4126 } | |
4127 case TopPTR: | |
4128 case AnyNull: | |
4129 case NotNull: | |
4130 st->print(":%s", ptr_msg[_ptr]); | |
4131 if( _klass_is_exact ) st->print(":exact"); | |
4132 break; | |
4133 } | |
4134 | |
64
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4135 if( _offset != 0 ) { |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4136 int header_size = objArrayOopDesc::header_size() * wordSize; |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4137 if( _offset == OffsetTop ) st->print("+undefined"); |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4138 else if( _offset == OffsetBot ) st->print("+any"); |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4139 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
|
4140 else { |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4141 BasicType basic_elem_type = elem()->basic_type(); |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4142 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
|
4143 int elem_size = type2aelembytes(basic_elem_type); |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4144 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
|
4145 } |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4146 } |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4147 st->print(" *"); |
223 | 4148 if (_instance_id == InstanceTop) |
4149 st->print(",iid=top"); | |
4150 else if (_instance_id != InstanceBot) | |
0 | 4151 st->print(",iid=%d",_instance_id); |
12966 | 4152 |
17731
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4153 dump_inline_depth(st); |
12966 | 4154 dump_speculative(st); |
0 | 4155 } |
4156 #endif | |
4157 | |
4158 bool TypeAryPtr::empty(void) const { | |
4159 if (_ary->empty()) return true; | |
4160 return TypeOopPtr::empty(); | |
4161 } | |
4162 | |
4163 //------------------------------add_offset------------------------------------- | |
12966 | 4164 const TypePtr *TypeAryPtr::add_offset(intptr_t offset) const { |
17731
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4165 return make(_ptr, _const_oop, _ary, _klass, _klass_is_exact, xadd_offset(offset), _instance_id, add_offset_speculative(offset), _inline_depth); |
12966 | 4166 } |
4167 | |
14383
5ec7dace41a6
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents:
14228
diff
changeset
|
4168 const Type *TypeAryPtr::remove_speculative() const { |
17731
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4169 if (_speculative == NULL) { |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4170 return this; |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4171 } |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4172 assert(_inline_depth == InlineDepthTop || _inline_depth == InlineDepthBottom, "non speculative type shouldn't have inline depth"); |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4173 return make(_ptr, _const_oop, _ary->remove_speculative()->is_ary(), _klass, _klass_is_exact, _offset, _instance_id, NULL, _inline_depth); |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4174 } |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4175 |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4176 const TypeOopPtr *TypeAryPtr::with_inline_depth(int depth) const { |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4177 if (!UseInlineDepthForSpeculativeTypes) { |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4178 return this; |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4179 } |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4180 return make(_ptr, _const_oop, _ary->remove_speculative()->is_ary(), _klass, _klass_is_exact, _offset, _instance_id, _speculative, depth); |
12966 | 4181 } |
0 | 4182 |
4183 //============================================================================= | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4184 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4185 //------------------------------hash------------------------------------------- |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4186 // Type-specific hashing function. |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4187 int TypeNarrowPtr::hash(void) const { |
827
bf3489cc0aa0
6856025: assert(_base >= OopPtr && _base <= KlassPtr,"Not a Java pointer")
never
parents:
820
diff
changeset
|
4188 return _ptrtype->hash() + 7; |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4189 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4190 |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4191 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
|
4192 return _ptrtype->singleton(); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4193 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4194 |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4195 bool TypeNarrowPtr::empty(void) const { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4196 return _ptrtype->empty(); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4197 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4198 |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4199 intptr_t TypeNarrowPtr::get_con() const { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4200 return _ptrtype->get_con(); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4201 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4202 |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4203 bool TypeNarrowPtr::eq( const Type *t ) const { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4204 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
|
4205 if (tc != NULL) { |
827
bf3489cc0aa0
6856025: assert(_base >= OopPtr && _base <= KlassPtr,"Not a Java pointer")
never
parents:
820
diff
changeset
|
4206 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
|
4207 return false; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4208 } |
827
bf3489cc0aa0
6856025: assert(_base >= OopPtr && _base <= KlassPtr,"Not a Java pointer")
never
parents:
820
diff
changeset
|
4209 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
|
4210 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4211 return false; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4212 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4213 |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4214 const Type *TypeNarrowPtr::xdual() const { // Compute dual right now. |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4215 const TypePtr* odual = _ptrtype->dual()->is_ptr(); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4216 return make_same_narrowptr(odual); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4217 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4218 |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4219 |
14383
5ec7dace41a6
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents:
14228
diff
changeset
|
4220 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
|
4221 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
|
4222 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
|
4223 if (ft->empty()) |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4224 return Type::TOP; // Canonical empty value |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4225 if (ft->isa_ptr()) { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4226 return make_hash_same_narrowptr(ft->isa_ptr()); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4227 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4228 return ft; |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4229 } 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
|
4230 const Type* ft = _ptrtype->join_helper(kills, include_speculative); |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4231 if (ft->empty()) |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4232 return Type::TOP; // Canonical empty value |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4233 return ft; |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4234 } else { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4235 return Type::TOP; |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4236 } |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4237 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4238 |
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4239 //------------------------------xmeet------------------------------------------ |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4240 // 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
|
4241 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
|
4242 // 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
|
4243 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
|
4244 |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4245 if (t->base() == base()) { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4246 const Type* result = _ptrtype->xmeet(t->make_ptr()); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4247 if (result->isa_ptr()) { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4248 return make_hash_same_narrowptr(result->is_ptr()); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4249 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4250 return result; |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4251 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4252 |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4253 // 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
|
4254 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
|
4255 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4256 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
|
4257 case Long: // reuses local variables |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4258 case FloatTop: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4259 case FloatCon: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4260 case FloatBot: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4261 case DoubleTop: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4262 case DoubleCon: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4263 case DoubleBot: |
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4264 case AnyPtr: |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4265 case RawPtr: |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4266 case OopPtr: |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4267 case InstPtr: |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4268 case AryPtr: |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4269 case MetadataPtr: |
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4270 case KlassPtr: |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4271 case NarrowOop: |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4272 case NarrowKlass: |
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4273 |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4274 case Bottom: // Ye Olde Default |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4275 return Type::BOTTOM; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4276 case Top: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4277 return this; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4278 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4279 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
|
4280 typerr(t); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4281 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4282 } // End of switch |
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4283 |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4284 return this; |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4285 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4286 |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4287 #ifndef PRODUCT |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4288 void TypeNarrowPtr::dump2( Dict & d, uint depth, outputStream *st ) const { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4289 _ptrtype->dump2(d, depth, st); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4290 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4291 #endif |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4292 |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4293 const TypeNarrowOop *TypeNarrowOop::BOTTOM; |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4294 const TypeNarrowOop *TypeNarrowOop::NULL_PTR; |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4295 |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4296 |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4297 const TypeNarrowOop* TypeNarrowOop::make(const TypePtr* type) { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4298 return (const TypeNarrowOop*)(new TypeNarrowOop(type))->hashcons(); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4299 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4300 |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4301 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4302 #ifndef PRODUCT |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4303 void TypeNarrowOop::dump2( Dict & d, uint depth, outputStream *st ) const { |
417 | 4304 st->print("narrowoop: "); |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4305 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
|
4306 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4307 #endif |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4308 |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4309 const TypeNarrowKlass *TypeNarrowKlass::NULL_PTR; |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4310 |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4311 const TypeNarrowKlass* TypeNarrowKlass::make(const TypePtr* type) { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4312 return (const TypeNarrowKlass*)(new TypeNarrowKlass(type))->hashcons(); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4313 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4314 |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4315 #ifndef PRODUCT |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4316 void TypeNarrowKlass::dump2( Dict & d, uint depth, outputStream *st ) const { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4317 st->print("narrowklass: "); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4318 TypeNarrowPtr::dump2(d, depth, st); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4319 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4320 #endif |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4321 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4322 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4323 //------------------------------eq--------------------------------------------- |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4324 // Structural equality check for Type representations |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4325 bool TypeMetadataPtr::eq( const Type *t ) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4326 const TypeMetadataPtr *a = (const TypeMetadataPtr*)t; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4327 ciMetadata* one = metadata(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4328 ciMetadata* two = a->metadata(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4329 if (one == NULL || two == NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4330 return (one == two) && TypePtr::eq(t); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4331 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4332 return one->equals(two) && TypePtr::eq(t); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4333 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
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|
4334 } |
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|
4335 |
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|
4336 //------------------------------hash------------------------------------------- |
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|
4337 // Type-specific hashing function. |
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|
4338 int TypeMetadataPtr::hash(void) const { |
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|
4339 return |
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|
4340 (metadata() ? metadata()->hash() : 0) + |
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|
4341 TypePtr::hash(); |
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|
4342 } |
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|
4343 |
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|
4344 //------------------------------singleton-------------------------------------- |
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4345 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple |
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|
4346 // constants |
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4347 bool TypeMetadataPtr::singleton(void) const { |
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4348 // detune optimizer to not generate constant metadta + constant offset as a constant! |
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4349 // TopPTR, Null, AnyNull, Constant are all singletons |
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4350 return (_offset == 0) && !below_centerline(_ptr); |
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|
4351 } |
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|
4352 |
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|
4353 //------------------------------add_offset------------------------------------- |
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|
4354 const TypePtr *TypeMetadataPtr::add_offset( intptr_t offset ) const { |
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4355 return make( _ptr, _metadata, xadd_offset(offset)); |
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|
4356 } |
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|
4357 |
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|
4358 //-----------------------------filter------------------------------------------ |
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|
4359 // 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
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|
4360 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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|
4361 const TypeMetadataPtr* ft = join_helper(kills, include_speculative)->isa_metadataptr(); |
6725
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4362 if (ft == NULL || ft->empty()) |
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4363 return Type::TOP; // Canonical empty value |
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|
4364 return ft; |
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|
4365 } |
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|
4366 |
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|
4367 //------------------------------get_con---------------------------------------- |
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|
4368 intptr_t TypeMetadataPtr::get_con() const { |
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|
4369 assert( _ptr == Null || _ptr == Constant, "" ); |
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|
4370 assert( _offset >= 0, "" ); |
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|
4371 |
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|
4372 if (_offset != 0) { |
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|
4373 // After being ported to the compiler interface, the compiler no longer |
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4374 // directly manipulates the addresses of oops. Rather, it only has a pointer |
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4375 // to a handle at compile time. This handle is embedded in the generated |
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4376 // code and dereferenced at the time the nmethod is made. Until that time, |
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4377 // it is not reasonable to do arithmetic with the addresses of oops (we don't |
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4378 // have access to the addresses!). This does not seem to currently happen, |
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4379 // but this assertion here is to help prevent its occurence. |
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|
4380 tty->print_cr("Found oop constant with non-zero offset"); |
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|
4381 ShouldNotReachHere(); |
da91efe96a93
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parents:
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diff
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|
4382 } |
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diff
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|
4383 |
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|
4384 return (intptr_t)metadata()->constant_encoding(); |
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|
4385 } |
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|
4386 |
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|
4387 //------------------------------cast_to_ptr_type------------------------------- |
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|
4388 const Type *TypeMetadataPtr::cast_to_ptr_type(PTR ptr) const { |
da91efe96a93
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|
4389 if( ptr == _ptr ) return this; |
da91efe96a93
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|
4390 return make(ptr, metadata(), _offset); |
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diff
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|
4391 } |
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changeset
|
4392 |
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|
4393 //------------------------------meet------------------------------------------- |
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|
4394 // Compute the MEET of two types. It returns a new Type object. |
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|
4395 const Type *TypeMetadataPtr::xmeet( const Type *t ) const { |
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4396 // Perform a fast test for common case; meeting the same types together. |
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4397 if( this == t ) return this; // Meeting same type-rep? |
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changeset
|
4398 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
4399 // Current "this->_base" is OopPtr |
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|
4400 switch (t->base()) { // switch on original type |
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|
4401 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
4402 case Int: // Mixing ints & oops happens when javac |
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|
4403 case Long: // reuses local variables |
da91efe96a93
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diff
changeset
|
4404 case FloatTop: |
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diff
changeset
|
4405 case FloatCon: |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
4406 case FloatBot: |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
4407 case DoubleTop: |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
4408 case DoubleCon: |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
4409 case DoubleBot: |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
4410 case NarrowOop: |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4411 case NarrowKlass: |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
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|
4412 case Bottom: // Ye Olde Default |
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diff
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|
4413 return Type::BOTTOM; |
da91efe96a93
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diff
changeset
|
4414 case Top: |
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6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
4415 return this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
4416 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
4417 default: // All else is a mistake |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
4418 typerr(t); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
4419 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
4420 case AnyPtr: { |
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|
4421 // Found an AnyPtr type vs self-OopPtr type |
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|
4422 const TypePtr *tp = t->is_ptr(); |
da91efe96a93
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|
4423 int offset = meet_offset(tp->offset()); |
da91efe96a93
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|
4424 PTR ptr = meet_ptr(tp->ptr()); |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
4425 switch (tp->ptr()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
4426 case Null: |
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6964458: Reimplement class meta-data storage to use native memory
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|
4427 if (ptr == Null) return TypePtr::make(AnyPtr, ptr, offset); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
4428 // else fall through: |
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diff
changeset
|
4429 case TopPTR: |
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diff
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|
4430 case AnyNull: { |
17780 | 4431 return make(ptr, _metadata, offset); |
6725
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diff
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|
4432 } |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
4433 case BotPTR: |
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diff
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|
4434 case NotNull: |
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|
4435 return TypePtr::make(AnyPtr, ptr, offset); |
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diff
changeset
|
4436 default: typerr(t); |
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diff
changeset
|
4437 } |
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diff
changeset
|
4438 } |
da91efe96a93
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diff
changeset
|
4439 |
da91efe96a93
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changeset
|
4440 case RawPtr: |
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changeset
|
4441 case KlassPtr: |
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changeset
|
4442 case OopPtr: |
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|
4443 case InstPtr: |
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|
4444 case AryPtr: |
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|
4445 return TypePtr::BOTTOM; // Oop meet raw is not well defined |
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|
4446 |
6728 | 4447 case MetadataPtr: { |
4448 const TypeMetadataPtr *tp = t->is_metadataptr(); | |
4449 int offset = meet_offset(tp->offset()); | |
4450 PTR tptr = tp->ptr(); | |
4451 PTR ptr = meet_ptr(tptr); | |
4452 ciMetadata* md = (tptr == TopPTR) ? metadata() : tp->metadata(); | |
4453 if (tptr == TopPTR || _ptr == TopPTR || | |
4454 metadata()->equals(tp->metadata())) { | |
4455 return make(ptr, md, offset); | |
4456 } | |
4457 // metadata is different | |
4458 if( ptr == Constant ) { // Cannot be equal constants, so... | |
4459 if( tptr == Constant && _ptr != Constant) return t; | |
4460 if( _ptr == Constant && tptr != Constant) return this; | |
4461 ptr = NotNull; // Fall down in lattice | |
4462 } | |
4463 return make(ptr, NULL, offset); | |
6725
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diff
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|
4464 break; |
6728 | 4465 } |
6725
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diff
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|
4466 } // End of switch |
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coleenp
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diff
changeset
|
4467 return this; // Return the double constant |
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parents:
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diff
changeset
|
4468 } |
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diff
changeset
|
4469 |
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diff
changeset
|
4470 |
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diff
changeset
|
4471 //------------------------------xdual------------------------------------------ |
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diff
changeset
|
4472 // Dual of a pure metadata pointer. |
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changeset
|
4473 const Type *TypeMetadataPtr::xdual() const { |
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diff
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|
4474 return new TypeMetadataPtr(dual_ptr(), metadata(), dual_offset()); |
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diff
changeset
|
4475 } |
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|
4476 |
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4477 //------------------------------dump2------------------------------------------ |
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4478 #ifndef PRODUCT |
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4479 void TypeMetadataPtr::dump2( Dict &d, uint depth, outputStream *st ) const { |
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4480 st->print("metadataptr:%s", ptr_msg[_ptr]); |
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4481 if( metadata() ) st->print(INTPTR_FORMAT, metadata()); |
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4482 switch( _offset ) { |
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4483 case OffsetTop: st->print("+top"); break; |
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4484 case OffsetBot: st->print("+any"); break; |
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4485 case 0: break; |
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4486 default: st->print("+%d",_offset); break; |
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4487 } |
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4488 } |
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4489 #endif |
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4490 |
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4491 |
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4492 //============================================================================= |
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4493 // Convenience common pre-built type. |
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4494 const TypeMetadataPtr *TypeMetadataPtr::BOTTOM; |
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4495 |
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4496 TypeMetadataPtr::TypeMetadataPtr(PTR ptr, ciMetadata* metadata, int offset): |
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4497 TypePtr(MetadataPtr, ptr, offset), _metadata(metadata) { |
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4498 } |
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4499 |
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4500 const TypeMetadataPtr* TypeMetadataPtr::make(ciMethod* m) { |
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4501 return make(Constant, m, 0); |
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4502 } |
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4503 const TypeMetadataPtr* TypeMetadataPtr::make(ciMethodData* m) { |
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4504 return make(Constant, m, 0); |
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4505 } |
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4506 |
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4507 //------------------------------make------------------------------------------- |
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4508 // Create a meta data constant |
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4509 const TypeMetadataPtr *TypeMetadataPtr::make(PTR ptr, ciMetadata* m, int offset) { |
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4510 assert(m == NULL || !m->is_klass(), "wrong type"); |
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4511 return (TypeMetadataPtr*)(new TypeMetadataPtr(ptr, m, offset))->hashcons(); |
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4512 } |
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4513 |
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4514 |
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4515 //============================================================================= |
0 | 4516 // Convenience common pre-built types. |
4517 | |
4518 // Not-null object klass or below | |
4519 const TypeKlassPtr *TypeKlassPtr::OBJECT; | |
4520 const TypeKlassPtr *TypeKlassPtr::OBJECT_OR_NULL; | |
4521 | |
6725
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4522 //------------------------------TypeKlassPtr----------------------------------- |
0 | 4523 TypeKlassPtr::TypeKlassPtr( PTR ptr, ciKlass* klass, int offset ) |
6725
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4524 : TypePtr(KlassPtr, ptr, offset), _klass(klass), _klass_is_exact(ptr == Constant) { |
0 | 4525 } |
4526 | |
4527 //------------------------------make------------------------------------------- | |
4528 // ptr to klass 'k', if Constant, or possibly to a sub-klass if not a Constant | |
4529 const TypeKlassPtr *TypeKlassPtr::make( PTR ptr, ciKlass* k, int offset ) { | |
4530 assert( k != NULL, "Expect a non-NULL klass"); | |
6725
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4531 assert(k->is_instance_klass() || k->is_array_klass(), "Incorrect type of klass oop"); |
0 | 4532 TypeKlassPtr *r = |
4533 (TypeKlassPtr*)(new TypeKlassPtr(ptr, k, offset))->hashcons(); | |
4534 | |
4535 return r; | |
4536 } | |
4537 | |
4538 //------------------------------eq--------------------------------------------- | |
4539 // Structural equality check for Type representations | |
4540 bool TypeKlassPtr::eq( const Type *t ) const { | |
4541 const TypeKlassPtr *p = t->is_klassptr(); | |
4542 return | |
4543 klass()->equals(p->klass()) && | |
6725
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4544 TypePtr::eq(p); |
0 | 4545 } |
4546 | |
4547 //------------------------------hash------------------------------------------- | |
4548 // Type-specific hashing function. | |
4549 int TypeKlassPtr::hash(void) const { | |
6725
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4550 return klass()->hash() + TypePtr::hash(); |
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4551 } |
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4552 |
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4553 //------------------------------singleton-------------------------------------- |
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4554 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple |
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4555 // constants |
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4556 bool TypeKlassPtr::singleton(void) const { |
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4557 // detune optimizer to not generate constant klass + constant offset as a constant! |
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4558 // TopPTR, Null, AnyNull, Constant are all singletons |
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4559 return (_offset == 0) && !below_centerline(_ptr); |
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4560 } |
0 | 4561 |
13014
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4562 // Do not allow interface-vs.-noninterface joins to collapse to top. |
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4563 const Type *TypeKlassPtr::filter_helper(const Type *kills, bool include_speculative) const { |
13014
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4564 // logic here mirrors the one from TypeOopPtr::filter. See comments |
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4565 // there. |
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4566 const Type* ft = join_helper(kills, include_speculative); |
13014
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4567 const TypeKlassPtr* ftkp = ft->isa_klassptr(); |
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4568 const TypeKlassPtr* ktkp = kills->isa_klassptr(); |
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4569 |
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4570 if (ft->empty()) { |
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4571 if (!empty() && ktkp != NULL && ktkp->klass()->is_loaded() && ktkp->klass()->is_interface()) |
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4572 return kills; // Uplift to interface |
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4573 |
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4574 return Type::TOP; // Canonical empty value |
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4575 } |
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4576 |
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4577 // Interface klass type could be exact in opposite to interface type, |
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4578 // return it here instead of incorrect Constant ptr J/L/Object (6894807). |
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4579 if (ftkp != NULL && ktkp != NULL && |
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4580 ftkp->is_loaded() && ftkp->klass()->is_interface() && |
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4581 !ftkp->klass_is_exact() && // Keep exact interface klass |
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4582 ktkp->is_loaded() && !ktkp->klass()->is_interface()) { |
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4583 return ktkp->cast_to_ptr_type(ftkp->ptr()); |
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4584 } |
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4585 |
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4586 return ft; |
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4587 } |
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4588 |
1761 | 4589 //----------------------compute_klass------------------------------------------ |
4590 // Compute the defining klass for this class | |
4591 ciKlass* TypeAryPtr::compute_klass(DEBUG_ONLY(bool verify)) const { | |
4592 // Compute _klass based on element type. | |
0 | 4593 ciKlass* k_ary = NULL; |
4594 const TypeInstPtr *tinst; | |
4595 const TypeAryPtr *tary; | |
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4596 const Type* el = elem(); |
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4597 if (el->isa_narrowoop()) { |
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4598 el = el->make_ptr(); |
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4599 } |
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4600 |
0 | 4601 // Get element klass |
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4602 if ((tinst = el->isa_instptr()) != NULL) { |
0 | 4603 // Compute array klass from element klass |
4604 k_ary = ciObjArrayKlass::make(tinst->klass()); | |
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4605 } else if ((tary = el->isa_aryptr()) != NULL) { |
0 | 4606 // Compute array klass from element klass |
4607 ciKlass* k_elem = tary->klass(); | |
4608 // If element type is something like bottom[], k_elem will be null. | |
4609 if (k_elem != NULL) | |
4610 k_ary = ciObjArrayKlass::make(k_elem); | |
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4611 } else if ((el->base() == Type::Top) || |
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4612 (el->base() == Type::Bottom)) { |
0 | 4613 // element type of Bottom occurs from meet of basic type |
4614 // and object; Top occurs when doing join on Bottom. | |
4615 // Leave k_ary at NULL. | |
4616 } else { | |
4617 // Cannot compute array klass directly from basic type, | |
4618 // since subtypes of TypeInt all have basic type T_INT. | |
1761 | 4619 #ifdef ASSERT |
4620 if (verify && el->isa_int()) { | |
4621 // Check simple cases when verifying klass. | |
4622 BasicType bt = T_ILLEGAL; | |
4623 if (el == TypeInt::BYTE) { | |
4624 bt = T_BYTE; | |
4625 } else if (el == TypeInt::SHORT) { | |
4626 bt = T_SHORT; | |
4627 } else if (el == TypeInt::CHAR) { | |
4628 bt = T_CHAR; | |
4629 } else if (el == TypeInt::INT) { | |
4630 bt = T_INT; | |
4631 } else { | |
4632 return _klass; // just return specified klass | |
4633 } | |
4634 return ciTypeArrayKlass::make(bt); | |
4635 } | |
4636 #endif | |
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4637 assert(!el->isa_int(), |
0 | 4638 "integral arrays must be pre-equipped with a class"); |
4639 // Compute array klass directly from basic type | |
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4640 k_ary = ciTypeArrayKlass::make(el->basic_type()); |
0 | 4641 } |
1761 | 4642 return k_ary; |
4643 } | |
4644 | |
4645 //------------------------------klass------------------------------------------ | |
4646 // Return the defining klass for this class | |
4647 ciKlass* TypeAryPtr::klass() const { | |
4648 if( _klass ) return _klass; // Return cached value, if possible | |
4649 | |
4650 // Oops, need to compute _klass and cache it | |
4651 ciKlass* k_ary = compute_klass(); | |
0 | 4652 |
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4653 if( this != TypeAryPtr::OOPS && this->dual() != TypeAryPtr::OOPS ) { |
0 | 4654 // The _klass field acts as a cache of the underlying |
4655 // ciKlass for this array type. In order to set the field, | |
4656 // we need to cast away const-ness. | |
4657 // | |
4658 // IMPORTANT NOTE: we *never* set the _klass field for the | |
4659 // type TypeAryPtr::OOPS. This Type is shared between all | |
4660 // active compilations. However, the ciKlass which represents | |
4661 // this Type is *not* shared between compilations, so caching | |
4662 // this value would result in fetching a dangling pointer. | |
4663 // | |
4664 // Recomputing the underlying ciKlass for each request is | |
4665 // a bit less efficient than caching, but calls to | |
4666 // TypeAryPtr::OOPS->klass() are not common enough to matter. | |
4667 ((TypeAryPtr*)this)->_klass = k_ary; | |
163 | 4668 if (UseCompressedOops && k_ary != NULL && k_ary->is_obj_array_klass() && |
4669 _offset != 0 && _offset != arrayOopDesc::length_offset_in_bytes()) { | |
4670 ((TypeAryPtr*)this)->_is_ptr_to_narrowoop = true; | |
4671 } | |
4672 } | |
0 | 4673 return k_ary; |
4674 } | |
4675 | |
4676 | |
4677 //------------------------------add_offset------------------------------------- | |
4678 // Access internals of klass object | |
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4679 const TypePtr *TypeKlassPtr::add_offset( intptr_t offset ) const { |
0 | 4680 return make( _ptr, klass(), xadd_offset(offset) ); |
4681 } | |
4682 | |
4683 //------------------------------cast_to_ptr_type------------------------------- | |
4684 const Type *TypeKlassPtr::cast_to_ptr_type(PTR ptr) const { | |
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4685 assert(_base == KlassPtr, "subclass must override cast_to_ptr_type"); |
0 | 4686 if( ptr == _ptr ) return this; |
4687 return make(ptr, _klass, _offset); | |
4688 } | |
4689 | |
4690 | |
4691 //-----------------------------cast_to_exactness------------------------------- | |
4692 const Type *TypeKlassPtr::cast_to_exactness(bool klass_is_exact) const { | |
4693 if( klass_is_exact == _klass_is_exact ) return this; | |
4694 if (!UseExactTypes) return this; | |
4695 return make(klass_is_exact ? Constant : NotNull, _klass, _offset); | |
4696 } | |
4697 | |
4698 | |
4699 //-----------------------------as_instance_type-------------------------------- | |
4700 // Corresponding type for an instance of the given class. | |
4701 // It will be NotNull, and exact if and only if the klass type is exact. | |
4702 const TypeOopPtr* TypeKlassPtr::as_instance_type() const { | |
4703 ciKlass* k = klass(); | |
4704 bool xk = klass_is_exact(); | |
4705 //return TypeInstPtr::make(TypePtr::NotNull, k, xk, NULL, 0); | |
4706 const TypeOopPtr* toop = TypeOopPtr::make_from_klass_raw(k); | |
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4707 guarantee(toop != NULL, "need type for given klass"); |
0 | 4708 toop = toop->cast_to_ptr_type(TypePtr::NotNull)->is_oopptr(); |
4709 return toop->cast_to_exactness(xk)->is_oopptr(); | |
4710 } | |
4711 | |
4712 | |
4713 //------------------------------xmeet------------------------------------------ | |
4714 // Compute the MEET of two types, return a new Type object. | |
4715 const Type *TypeKlassPtr::xmeet( const Type *t ) const { | |
4716 // Perform a fast test for common case; meeting the same types together. | |
4717 if( this == t ) return this; // Meeting same type-rep? | |
4718 | |
4719 // Current "this->_base" is Pointer | |
4720 switch (t->base()) { // switch on original type | |
4721 | |
4722 case Int: // Mixing ints & oops happens when javac | |
4723 case Long: // reuses local variables | |
4724 case FloatTop: | |
4725 case FloatCon: | |
4726 case FloatBot: | |
4727 case DoubleTop: | |
4728 case DoubleCon: | |
4729 case DoubleBot: | |
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4730 case NarrowOop: |
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4731 case NarrowKlass: |
0 | 4732 case Bottom: // Ye Olde Default |
4733 return Type::BOTTOM; | |
4734 case Top: | |
4735 return this; | |
4736 | |
4737 default: // All else is a mistake | |
4738 typerr(t); | |
4739 | |
4740 case AnyPtr: { // Meeting to AnyPtrs | |
4741 // Found an AnyPtr type vs self-KlassPtr type | |
4742 const TypePtr *tp = t->is_ptr(); | |
4743 int offset = meet_offset(tp->offset()); | |
4744 PTR ptr = meet_ptr(tp->ptr()); | |
4745 switch (tp->ptr()) { | |
4746 case TopPTR: | |
4747 return this; | |
4748 case Null: | |
4749 if( ptr == Null ) return TypePtr::make( AnyPtr, ptr, offset ); | |
4750 case AnyNull: | |
4751 return make( ptr, klass(), offset ); | |
4752 case BotPTR: | |
4753 case NotNull: | |
4754 return TypePtr::make(AnyPtr, ptr, offset); | |
4755 default: typerr(t); | |
4756 } | |
4757 } | |
4758 | |
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4759 case RawPtr: |
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4760 case MetadataPtr: |
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4761 case OopPtr: |
0 | 4762 case AryPtr: // Meet with AryPtr |
4763 case InstPtr: // Meet with InstPtr | |
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4764 return TypePtr::BOTTOM; |
0 | 4765 |
4766 // | |
4767 // A-top } | |
4768 // / | \ } Tops | |
4769 // B-top A-any C-top } | |
4770 // | / | \ | } Any-nulls | |
4771 // B-any | C-any } | |
4772 // | | | | |
4773 // B-con A-con C-con } constants; not comparable across classes | |
4774 // | | | | |
4775 // B-not | C-not } | |
4776 // | \ | / | } not-nulls | |
4777 // B-bot A-not C-bot } | |
4778 // \ | / } Bottoms | |
4779 // A-bot } | |
4780 // | |
4781 | |
4782 case KlassPtr: { // Meet two KlassPtr types | |
4783 const TypeKlassPtr *tkls = t->is_klassptr(); | |
4784 int off = meet_offset(tkls->offset()); | |
4785 PTR ptr = meet_ptr(tkls->ptr()); | |
4786 | |
4787 // Check for easy case; klasses are equal (and perhaps not loaded!) | |
4788 // If we have constants, then we created oops so classes are loaded | |
4789 // and we can handle the constants further down. This case handles | |
4790 // not-loaded classes | |
4791 if( ptr != Constant && tkls->klass()->equals(klass()) ) { | |
4792 return make( ptr, klass(), off ); | |
4793 } | |
4794 | |
4795 // Classes require inspection in the Java klass hierarchy. Must be loaded. | |
4796 ciKlass* tkls_klass = tkls->klass(); | |
4797 ciKlass* this_klass = this->klass(); | |
4798 assert( tkls_klass->is_loaded(), "This class should have been loaded."); | |
4799 assert( this_klass->is_loaded(), "This class should have been loaded."); | |
4800 | |
4801 // If 'this' type is above the centerline and is a superclass of the | |
4802 // other, we can treat 'this' as having the same type as the other. | |
4803 if ((above_centerline(this->ptr())) && | |
4804 tkls_klass->is_subtype_of(this_klass)) { | |
4805 this_klass = tkls_klass; | |
4806 } | |
4807 // If 'tinst' type is above the centerline and is a superclass of the | |
4808 // other, we can treat 'tinst' as having the same type as the other. | |
4809 if ((above_centerline(tkls->ptr())) && | |
4810 this_klass->is_subtype_of(tkls_klass)) { | |
4811 tkls_klass = this_klass; | |
4812 } | |
4813 | |
4814 // Check for classes now being equal | |
4815 if (tkls_klass->equals(this_klass)) { | |
4816 // If the klasses are equal, the constants may still differ. Fall to | |
4817 // NotNull if they do (neither constant is NULL; that is a special case | |
4818 // handled elsewhere). | |
4819 if( ptr == Constant ) { | |
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4820 if (this->_ptr == Constant && tkls->_ptr == Constant && |
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4821 this->klass()->equals(tkls->klass())); |
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4822 else if (above_centerline(this->ptr())); |
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4823 else if (above_centerline(tkls->ptr())); |
0 | 4824 else |
4825 ptr = NotNull; | |
4826 } | |
4827 return make( ptr, this_klass, off ); | |
4828 } // Else classes are not equal | |
4829 | |
4830 // Since klasses are different, we require the LCA in the Java | |
4831 // class hierarchy - which means we have to fall to at least NotNull. | |
4832 if( ptr == TopPTR || ptr == AnyNull || ptr == Constant ) | |
4833 ptr = NotNull; | |
4834 // Now we find the LCA of Java classes | |
4835 ciKlass* k = this_klass->least_common_ancestor(tkls_klass); | |
4836 return make( ptr, k, off ); | |
4837 } // End of case KlassPtr | |
4838 | |
4839 } // End of switch | |
4840 return this; // Return the double constant | |
4841 } | |
4842 | |
4843 //------------------------------xdual------------------------------------------ | |
4844 // Dual: compute field-by-field dual | |
4845 const Type *TypeKlassPtr::xdual() const { | |
4846 return new TypeKlassPtr( dual_ptr(), klass(), dual_offset() ); | |
4847 } | |
4848 | |
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4849 //------------------------------get_con---------------------------------------- |
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4850 intptr_t TypeKlassPtr::get_con() const { |
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4851 assert( _ptr == Null || _ptr == Constant, "" ); |
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4852 assert( _offset >= 0, "" ); |
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4853 |
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4854 if (_offset != 0) { |
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4855 // After being ported to the compiler interface, the compiler no longer |
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4856 // directly manipulates the addresses of oops. Rather, it only has a pointer |
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4857 // to a handle at compile time. This handle is embedded in the generated |
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4858 // code and dereferenced at the time the nmethod is made. Until that time, |
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4859 // it is not reasonable to do arithmetic with the addresses of oops (we don't |
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4860 // have access to the addresses!). This does not seem to currently happen, |
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4861 // but this assertion here is to help prevent its occurence. |
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4862 tty->print_cr("Found oop constant with non-zero offset"); |
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4863 ShouldNotReachHere(); |
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4864 } |
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4865 |
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4866 return (intptr_t)klass()->constant_encoding(); |
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4867 } |
0 | 4868 //------------------------------dump2------------------------------------------ |
4869 // Dump Klass Type | |
4870 #ifndef PRODUCT | |
4871 void TypeKlassPtr::dump2( Dict & d, uint depth, outputStream *st ) const { | |
4872 switch( _ptr ) { | |
4873 case Constant: | |
4874 st->print("precise "); | |
4875 case NotNull: | |
4876 { | |
4877 const char *name = klass()->name()->as_utf8(); | |
4878 if( name ) { | |
4879 st->print("klass %s: " INTPTR_FORMAT, name, klass()); | |
4880 } else { | |
4881 ShouldNotReachHere(); | |
4882 } | |
4883 } | |
4884 case BotPTR: | |
4885 if( !WizardMode && !Verbose && !_klass_is_exact ) break; | |
4886 case TopPTR: | |
4887 case AnyNull: | |
4888 st->print(":%s", ptr_msg[_ptr]); | |
4889 if( _klass_is_exact ) st->print(":exact"); | |
4890 break; | |
4891 } | |
4892 | |
4893 if( _offset ) { // Dump offset, if any | |
4894 if( _offset == OffsetBot ) { st->print("+any"); } | |
4895 else if( _offset == OffsetTop ) { st->print("+unknown"); } | |
4896 else { st->print("+%d", _offset); } | |
4897 } | |
4898 | |
4899 st->print(" *"); | |
4900 } | |
4901 #endif | |
4902 | |
4903 | |
4904 | |
4905 //============================================================================= | |
4906 // Convenience common pre-built types. | |
4907 | |
4908 //------------------------------make------------------------------------------- | |
4909 const TypeFunc *TypeFunc::make( const TypeTuple *domain, const TypeTuple *range ) { | |
4910 return (TypeFunc*)(new TypeFunc(domain,range))->hashcons(); | |
4911 } | |
4912 | |
4913 //------------------------------make------------------------------------------- | |
4914 const TypeFunc *TypeFunc::make(ciMethod* method) { | |
4915 Compile* C = Compile::current(); | |
4916 const TypeFunc* tf = C->last_tf(method); // check cache | |
4917 if (tf != NULL) return tf; // The hit rate here is almost 50%. | |
4918 const TypeTuple *domain; | |
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4919 if (method->is_static()) { |
0 | 4920 domain = TypeTuple::make_domain(NULL, method->signature()); |
4921 } else { | |
4922 domain = TypeTuple::make_domain(method->holder(), method->signature()); | |
4923 } | |
4924 const TypeTuple *range = TypeTuple::make_range(method->signature()); | |
4925 tf = TypeFunc::make(domain, range); | |
4926 C->set_last_tf(method, tf); // fill cache | |
4927 return tf; | |
4928 } | |
4929 | |
4930 //------------------------------meet------------------------------------------- | |
4931 // Compute the MEET of two types. It returns a new Type object. | |
4932 const Type *TypeFunc::xmeet( const Type *t ) const { | |
4933 // Perform a fast test for common case; meeting the same types together. | |
4934 if( this == t ) return this; // Meeting same type-rep? | |
4935 | |
4936 // Current "this->_base" is Func | |
4937 switch (t->base()) { // switch on original type | |
4938 | |
4939 case Bottom: // Ye Olde Default | |
4940 return t; | |
4941 | |
4942 default: // All else is a mistake | |
4943 typerr(t); | |
4944 | |
4945 case Top: | |
4946 break; | |
4947 } | |
4948 return this; // Return the double constant | |
4949 } | |
4950 | |
4951 //------------------------------xdual------------------------------------------ | |
4952 // Dual: compute field-by-field dual | |
4953 const Type *TypeFunc::xdual() const { | |
4954 return this; | |
4955 } | |
4956 | |
4957 //------------------------------eq--------------------------------------------- | |
4958 // Structural equality check for Type representations | |
4959 bool TypeFunc::eq( const Type *t ) const { | |
4960 const TypeFunc *a = (const TypeFunc*)t; | |
4961 return _domain == a->_domain && | |
4962 _range == a->_range; | |
4963 } | |
4964 | |
4965 //------------------------------hash------------------------------------------- | |
4966 // Type-specific hashing function. | |
4967 int TypeFunc::hash(void) const { | |
4968 return (intptr_t)_domain + (intptr_t)_range; | |
4969 } | |
4970 | |
4971 //------------------------------dump2------------------------------------------ | |
4972 // Dump Function Type | |
4973 #ifndef PRODUCT | |
4974 void TypeFunc::dump2( Dict &d, uint depth, outputStream *st ) const { | |
4975 if( _range->_cnt <= Parms ) | |
4976 st->print("void"); | |
4977 else { | |
4978 uint i; | |
4979 for (i = Parms; i < _range->_cnt-1; i++) { | |
4980 _range->field_at(i)->dump2(d,depth,st); | |
4981 st->print("/"); | |
4982 } | |
4983 _range->field_at(i)->dump2(d,depth,st); | |
4984 } | |
4985 st->print(" "); | |
4986 st->print("( "); | |
4987 if( !depth || d[this] ) { // Check for recursive dump | |
4988 st->print("...)"); | |
4989 return; | |
4990 } | |
4991 d.Insert((void*)this,(void*)this); // Stop recursion | |
4992 if (Parms < _domain->_cnt) | |
4993 _domain->field_at(Parms)->dump2(d,depth-1,st); | |
4994 for (uint i = Parms+1; i < _domain->_cnt; i++) { | |
4995 st->print(", "); | |
4996 _domain->field_at(i)->dump2(d,depth-1,st); | |
4997 } | |
4998 st->print(" )"); | |
4999 } | |
5000 #endif | |
5001 | |
5002 //------------------------------singleton-------------------------------------- | |
5003 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
5004 // constants (Ldi nodes). Singletons are integer, float or double constants | |
5005 // or a single symbol. | |
5006 bool TypeFunc::singleton(void) const { | |
5007 return false; // Never a singleton | |
5008 } | |
5009 | |
5010 bool TypeFunc::empty(void) const { | |
5011 return false; // Never empty | |
5012 } | |
5013 | |
5014 | |
5015 BasicType TypeFunc::return_type() const{ | |
5016 if (range()->cnt() == TypeFunc::Parms) { | |
5017 return T_VOID; | |
5018 } | |
5019 return range()->field_at(TypeFunc::Parms)->basic_type(); | |
5020 } |