Mercurial > hg > graal-jvmci-8
annotate src/share/vm/opto/type.cpp @ 17776:9ab9f254cfe2
6653795: C2 intrinsic for Unsafe.getAddress performs pointer sign extension on 32-bit systems
Summary: Native pointers less than 64 bits wide should be extended as an unsigned number.
Reviewed-by: kvn, kevinw
author | poonam |
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date | Mon, 24 Mar 2014 08:43:10 -0700 |
parents | 62825ea7e51f |
children | 606acabe7b5c |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
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26 #include "ci/ciMethodData.hpp" |
1972 | 27 #include "ci/ciTypeFlow.hpp" |
28 #include "classfile/symbolTable.hpp" | |
29 #include "classfile/systemDictionary.hpp" | |
30 #include "compiler/compileLog.hpp" | |
31 #include "libadt/dict.hpp" | |
32 #include "memory/gcLocker.hpp" | |
33 #include "memory/oopFactory.hpp" | |
34 #include "memory/resourceArea.hpp" | |
35 #include "oops/instanceKlass.hpp" | |
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36 #include "oops/instanceMirrorKlass.hpp" |
1972 | 37 #include "oops/objArrayKlass.hpp" |
38 #include "oops/typeArrayKlass.hpp" | |
39 #include "opto/matcher.hpp" | |
40 #include "opto/node.hpp" | |
41 #include "opto/opcodes.hpp" | |
42 #include "opto/type.hpp" | |
43 | |
0 | 44 // Portions of code courtesy of Clifford Click |
45 | |
46 // Optimization - Graph Style | |
47 | |
48 // Dictionary of types shared among compilations. | |
49 Dict* Type::_shared_type_dict = NULL; | |
50 | |
51 // Array which maps compiler types to Basic Types | |
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52 Type::TypeInfo Type::_type_info[Type::lastype] = { |
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53 { Bad, T_ILLEGAL, "bad", false, Node::NotAMachineReg, relocInfo::none }, // Bad |
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54 { Control, T_ILLEGAL, "control", false, 0, relocInfo::none }, // Control |
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55 { Bottom, T_VOID, "top", false, 0, relocInfo::none }, // Top |
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56 { Bad, T_INT, "int:", false, Op_RegI, relocInfo::none }, // Int |
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57 { Bad, T_LONG, "long:", false, Op_RegL, relocInfo::none }, // Long |
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58 { Half, T_VOID, "half", false, 0, relocInfo::none }, // Half |
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59 { Bad, T_NARROWOOP, "narrowoop:", false, Op_RegN, relocInfo::none }, // NarrowOop |
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60 { Bad, T_NARROWKLASS,"narrowklass:", false, Op_RegN, relocInfo::none }, // NarrowKlass |
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61 { Bad, T_ILLEGAL, "tuple:", false, Node::NotAMachineReg, relocInfo::none }, // Tuple |
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62 { Bad, T_ARRAY, "array:", false, Node::NotAMachineReg, relocInfo::none }, // Array |
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63 |
6890 | 64 #ifndef SPARC |
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65 { Bad, T_ILLEGAL, "vectors:", false, Op_VecS, relocInfo::none }, // VectorS |
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66 { Bad, T_ILLEGAL, "vectord:", false, Op_VecD, relocInfo::none }, // VectorD |
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67 { Bad, T_ILLEGAL, "vectorx:", false, Op_VecX, relocInfo::none }, // VectorX |
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68 { Bad, T_ILLEGAL, "vectory:", false, Op_VecY, relocInfo::none }, // VectorY |
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69 #else |
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70 { Bad, T_ILLEGAL, "vectors:", false, 0, relocInfo::none }, // VectorS |
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71 { Bad, T_ILLEGAL, "vectord:", false, Op_RegD, relocInfo::none }, // VectorD |
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72 { Bad, T_ILLEGAL, "vectorx:", false, 0, relocInfo::none }, // VectorX |
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73 { Bad, T_ILLEGAL, "vectory:", false, 0, relocInfo::none }, // VectorY |
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74 #endif // IA32 || AMD64 |
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75 { Bad, T_ADDRESS, "anyptr:", false, Op_RegP, relocInfo::none }, // AnyPtr |
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76 { Bad, T_ADDRESS, "rawptr:", false, Op_RegP, relocInfo::none }, // RawPtr |
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77 { Bad, T_OBJECT, "oop:", true, Op_RegP, relocInfo::oop_type }, // OopPtr |
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78 { Bad, T_OBJECT, "inst:", true, Op_RegP, relocInfo::oop_type }, // InstPtr |
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79 { Bad, T_OBJECT, "ary:", true, Op_RegP, relocInfo::oop_type }, // AryPtr |
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80 { Bad, T_METADATA, "metadata:", false, Op_RegP, relocInfo::metadata_type }, // MetadataPtr |
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81 { Bad, T_METADATA, "klass:", false, Op_RegP, relocInfo::metadata_type }, // KlassPtr |
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82 { Bad, T_OBJECT, "func", false, 0, relocInfo::none }, // Function |
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83 { Abio, T_ILLEGAL, "abIO", false, 0, relocInfo::none }, // Abio |
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84 { Return_Address, T_ADDRESS, "return_address",false, Op_RegP, relocInfo::none }, // Return_Address |
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85 { Memory, T_ILLEGAL, "memory", false, 0, relocInfo::none }, // Memory |
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86 { FloatBot, T_FLOAT, "float_top", false, Op_RegF, relocInfo::none }, // FloatTop |
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87 { FloatCon, T_FLOAT, "ftcon:", false, Op_RegF, relocInfo::none }, // FloatCon |
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88 { FloatTop, T_FLOAT, "float", false, Op_RegF, relocInfo::none }, // FloatBot |
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89 { DoubleBot, T_DOUBLE, "double_top", false, Op_RegD, relocInfo::none }, // DoubleTop |
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90 { DoubleCon, T_DOUBLE, "dblcon:", false, Op_RegD, relocInfo::none }, // DoubleCon |
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91 { DoubleTop, T_DOUBLE, "double", false, Op_RegD, relocInfo::none }, // DoubleBot |
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92 { Top, T_ILLEGAL, "bottom", false, 0, relocInfo::none } // Bottom |
0 | 93 }; |
94 | |
95 // Map ideal registers (machine types) to ideal types | |
96 const Type *Type::mreg2type[_last_machine_leaf]; | |
97 | |
98 // Map basic types to canonical Type* pointers. | |
99 const Type* Type:: _const_basic_type[T_CONFLICT+1]; | |
100 | |
101 // Map basic types to constant-zero Types. | |
102 const Type* Type:: _zero_type[T_CONFLICT+1]; | |
103 | |
104 // Map basic types to array-body alias types. | |
105 const TypeAryPtr* TypeAryPtr::_array_body_type[T_CONFLICT+1]; | |
106 | |
107 //============================================================================= | |
108 // Convenience common pre-built types. | |
109 const Type *Type::ABIO; // State-of-machine only | |
110 const Type *Type::BOTTOM; // All values | |
111 const Type *Type::CONTROL; // Control only | |
112 const Type *Type::DOUBLE; // All doubles | |
113 const Type *Type::FLOAT; // All floats | |
114 const Type *Type::HALF; // Placeholder half of doublewide type | |
115 const Type *Type::MEMORY; // Abstract store only | |
116 const Type *Type::RETURN_ADDRESS; | |
117 const Type *Type::TOP; // No values in set | |
118 | |
119 //------------------------------get_const_type--------------------------- | |
120 const Type* Type::get_const_type(ciType* type) { | |
121 if (type == NULL) { | |
122 return NULL; | |
123 } else if (type->is_primitive_type()) { | |
124 return get_const_basic_type(type->basic_type()); | |
125 } else { | |
126 return TypeOopPtr::make_from_klass(type->as_klass()); | |
127 } | |
128 } | |
129 | |
130 //---------------------------array_element_basic_type--------------------------------- | |
131 // Mapping to the array element's basic type. | |
132 BasicType Type::array_element_basic_type() const { | |
133 BasicType bt = basic_type(); | |
134 if (bt == T_INT) { | |
135 if (this == TypeInt::INT) return T_INT; | |
136 if (this == TypeInt::CHAR) return T_CHAR; | |
137 if (this == TypeInt::BYTE) return T_BYTE; | |
138 if (this == TypeInt::BOOL) return T_BOOLEAN; | |
139 if (this == TypeInt::SHORT) return T_SHORT; | |
140 return T_VOID; | |
141 } | |
142 return bt; | |
143 } | |
144 | |
145 //---------------------------get_typeflow_type--------------------------------- | |
146 // Import a type produced by ciTypeFlow. | |
147 const Type* Type::get_typeflow_type(ciType* type) { | |
148 switch (type->basic_type()) { | |
149 | |
150 case ciTypeFlow::StateVector::T_BOTTOM: | |
151 assert(type == ciTypeFlow::StateVector::bottom_type(), ""); | |
152 return Type::BOTTOM; | |
153 | |
154 case ciTypeFlow::StateVector::T_TOP: | |
155 assert(type == ciTypeFlow::StateVector::top_type(), ""); | |
156 return Type::TOP; | |
157 | |
158 case ciTypeFlow::StateVector::T_NULL: | |
159 assert(type == ciTypeFlow::StateVector::null_type(), ""); | |
160 return TypePtr::NULL_PTR; | |
161 | |
162 case ciTypeFlow::StateVector::T_LONG2: | |
163 // The ciTypeFlow pass pushes a long, then the half. | |
164 // We do the same. | |
165 assert(type == ciTypeFlow::StateVector::long2_type(), ""); | |
166 return TypeInt::TOP; | |
167 | |
168 case ciTypeFlow::StateVector::T_DOUBLE2: | |
169 // The ciTypeFlow pass pushes double, then the half. | |
170 // Our convention is the same. | |
171 assert(type == ciTypeFlow::StateVector::double2_type(), ""); | |
172 return Type::TOP; | |
173 | |
174 case T_ADDRESS: | |
175 assert(type->is_return_address(), ""); | |
176 return TypeRawPtr::make((address)(intptr_t)type->as_return_address()->bci()); | |
177 | |
178 default: | |
179 // make sure we did not mix up the cases: | |
180 assert(type != ciTypeFlow::StateVector::bottom_type(), ""); | |
181 assert(type != ciTypeFlow::StateVector::top_type(), ""); | |
182 assert(type != ciTypeFlow::StateVector::null_type(), ""); | |
183 assert(type != ciTypeFlow::StateVector::long2_type(), ""); | |
184 assert(type != ciTypeFlow::StateVector::double2_type(), ""); | |
185 assert(!type->is_return_address(), ""); | |
186 | |
187 return Type::get_const_type(type); | |
188 } | |
189 } | |
190 | |
191 | |
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192 //-----------------------make_from_constant------------------------------------ |
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193 const Type* Type::make_from_constant(ciConstant constant, |
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194 bool require_constant, bool is_autobox_cache) { |
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195 switch (constant.basic_type()) { |
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196 case T_BOOLEAN: return TypeInt::make(constant.as_boolean()); |
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197 case T_CHAR: return TypeInt::make(constant.as_char()); |
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198 case T_BYTE: return TypeInt::make(constant.as_byte()); |
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199 case T_SHORT: return TypeInt::make(constant.as_short()); |
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200 case T_INT: return TypeInt::make(constant.as_int()); |
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201 case T_LONG: return TypeLong::make(constant.as_long()); |
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202 case T_FLOAT: return TypeF::make(constant.as_float()); |
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203 case T_DOUBLE: return TypeD::make(constant.as_double()); |
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204 case T_ARRAY: |
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205 case T_OBJECT: |
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206 { |
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207 // cases: |
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208 // can_be_constant = (oop not scavengable || ScavengeRootsInCode != 0) |
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209 // should_be_constant = (oop not scavengable || ScavengeRootsInCode >= 2) |
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210 // An oop is not scavengable if it is in the perm gen. |
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211 ciObject* oop_constant = constant.as_object(); |
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212 if (oop_constant->is_null_object()) { |
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213 return Type::get_zero_type(T_OBJECT); |
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214 } else if (require_constant || oop_constant->should_be_constant()) { |
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215 return TypeOopPtr::make_from_constant(oop_constant, require_constant, is_autobox_cache); |
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216 } |
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217 } |
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218 } |
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219 // Fall through to failure |
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220 return NULL; |
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221 } |
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222 |
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223 |
0 | 224 //------------------------------make------------------------------------------- |
225 // Create a simple Type, with default empty symbol sets. Then hashcons it | |
226 // and look for an existing copy in the type dictionary. | |
227 const Type *Type::make( enum TYPES t ) { | |
228 return (new Type(t))->hashcons(); | |
229 } | |
223 | 230 |
0 | 231 //------------------------------cmp-------------------------------------------- |
232 int Type::cmp( const Type *const t1, const Type *const t2 ) { | |
233 if( t1->_base != t2->_base ) | |
234 return 1; // Missed badly | |
235 assert(t1 != t2 || t1->eq(t2), "eq must be reflexive"); | |
236 return !t1->eq(t2); // Return ZERO if equal | |
237 } | |
238 | |
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239 const Type* Type::maybe_remove_speculative(bool include_speculative) const { |
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240 if (!include_speculative) { |
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241 return remove_speculative(); |
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242 } |
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243 return this; |
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244 } |
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245 |
0 | 246 //------------------------------hash------------------------------------------- |
247 int Type::uhash( const Type *const t ) { | |
248 return t->hash(); | |
249 } | |
250 | |
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251 #define SMALLINT ((juint)3) // a value too insignificant to consider widening |
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252 |
0 | 253 //--------------------------Initialize_shared---------------------------------- |
254 void Type::Initialize_shared(Compile* current) { | |
255 // This method does not need to be locked because the first system | |
256 // compilations (stub compilations) occur serially. If they are | |
257 // changed to proceed in parallel, then this section will need | |
258 // locking. | |
259 | |
260 Arena* save = current->type_arena(); | |
6197 | 261 Arena* shared_type_arena = new (mtCompiler)Arena(); |
0 | 262 |
263 current->set_type_arena(shared_type_arena); | |
264 _shared_type_dict = | |
265 new (shared_type_arena) Dict( (CmpKey)Type::cmp, (Hash)Type::uhash, | |
266 shared_type_arena, 128 ); | |
267 current->set_type_dict(_shared_type_dict); | |
268 | |
269 // Make shared pre-built types. | |
270 CONTROL = make(Control); // Control only | |
271 TOP = make(Top); // No values in set | |
272 MEMORY = make(Memory); // Abstract store only | |
273 ABIO = make(Abio); // State-of-machine only | |
274 RETURN_ADDRESS=make(Return_Address); | |
275 FLOAT = make(FloatBot); // All floats | |
276 DOUBLE = make(DoubleBot); // All doubles | |
277 BOTTOM = make(Bottom); // Everything | |
278 HALF = make(Half); // Placeholder half of doublewide type | |
279 | |
280 TypeF::ZERO = TypeF::make(0.0); // Float 0 (positive zero) | |
281 TypeF::ONE = TypeF::make(1.0); // Float 1 | |
282 | |
283 TypeD::ZERO = TypeD::make(0.0); // Double 0 (positive zero) | |
284 TypeD::ONE = TypeD::make(1.0); // Double 1 | |
285 | |
286 TypeInt::MINUS_1 = TypeInt::make(-1); // -1 | |
287 TypeInt::ZERO = TypeInt::make( 0); // 0 | |
288 TypeInt::ONE = TypeInt::make( 1); // 1 | |
289 TypeInt::BOOL = TypeInt::make(0,1, WidenMin); // 0 or 1, FALSE or TRUE. | |
290 TypeInt::CC = TypeInt::make(-1, 1, WidenMin); // -1, 0 or 1, condition codes | |
291 TypeInt::CC_LT = TypeInt::make(-1,-1, WidenMin); // == TypeInt::MINUS_1 | |
292 TypeInt::CC_GT = TypeInt::make( 1, 1, WidenMin); // == TypeInt::ONE | |
293 TypeInt::CC_EQ = TypeInt::make( 0, 0, WidenMin); // == TypeInt::ZERO | |
294 TypeInt::CC_LE = TypeInt::make(-1, 0, WidenMin); | |
295 TypeInt::CC_GE = TypeInt::make( 0, 1, WidenMin); // == TypeInt::BOOL | |
296 TypeInt::BYTE = TypeInt::make(-128,127, WidenMin); // Bytes | |
624 | 297 TypeInt::UBYTE = TypeInt::make(0, 255, WidenMin); // Unsigned Bytes |
0 | 298 TypeInt::CHAR = TypeInt::make(0,65535, WidenMin); // Java chars |
299 TypeInt::SHORT = TypeInt::make(-32768,32767, WidenMin); // Java shorts | |
300 TypeInt::POS = TypeInt::make(0,max_jint, WidenMin); // Non-neg values | |
301 TypeInt::POS1 = TypeInt::make(1,max_jint, WidenMin); // Positive values | |
302 TypeInt::INT = TypeInt::make(min_jint,max_jint, WidenMax); // 32-bit integers | |
303 TypeInt::SYMINT = TypeInt::make(-max_jint,max_jint,WidenMin); // symmetric range | |
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304 TypeInt::TYPE_DOMAIN = TypeInt::INT; |
0 | 305 // CmpL is overloaded both as the bytecode computation returning |
306 // a trinary (-1,0,+1) integer result AND as an efficient long | |
307 // compare returning optimizer ideal-type flags. | |
308 assert( TypeInt::CC_LT == TypeInt::MINUS_1, "types must match for CmpL to work" ); | |
309 assert( TypeInt::CC_GT == TypeInt::ONE, "types must match for CmpL to work" ); | |
310 assert( TypeInt::CC_EQ == TypeInt::ZERO, "types must match for CmpL to work" ); | |
311 assert( TypeInt::CC_GE == TypeInt::BOOL, "types must match for CmpL to work" ); | |
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312 assert( (juint)(TypeInt::CC->_hi - TypeInt::CC->_lo) <= SMALLINT, "CC is truly small"); |
0 | 313 |
314 TypeLong::MINUS_1 = TypeLong::make(-1); // -1 | |
315 TypeLong::ZERO = TypeLong::make( 0); // 0 | |
316 TypeLong::ONE = TypeLong::make( 1); // 1 | |
317 TypeLong::POS = TypeLong::make(0,max_jlong, WidenMin); // Non-neg values | |
318 TypeLong::LONG = TypeLong::make(min_jlong,max_jlong,WidenMax); // 64-bit integers | |
319 TypeLong::INT = TypeLong::make((jlong)min_jint,(jlong)max_jint,WidenMin); | |
320 TypeLong::UINT = TypeLong::make(0,(jlong)max_juint,WidenMin); | |
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321 TypeLong::TYPE_DOMAIN = TypeLong::LONG; |
0 | 322 |
323 const Type **fboth =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
324 fboth[0] = Type::CONTROL; | |
325 fboth[1] = Type::CONTROL; | |
326 TypeTuple::IFBOTH = TypeTuple::make( 2, fboth ); | |
327 | |
328 const Type **ffalse =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
329 ffalse[0] = Type::CONTROL; | |
330 ffalse[1] = Type::TOP; | |
331 TypeTuple::IFFALSE = TypeTuple::make( 2, ffalse ); | |
332 | |
333 const Type **fneither =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
334 fneither[0] = Type::TOP; | |
335 fneither[1] = Type::TOP; | |
336 TypeTuple::IFNEITHER = TypeTuple::make( 2, fneither ); | |
337 | |
338 const Type **ftrue =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
339 ftrue[0] = Type::TOP; | |
340 ftrue[1] = Type::CONTROL; | |
341 TypeTuple::IFTRUE = TypeTuple::make( 2, ftrue ); | |
342 | |
343 const Type **floop =(const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
344 floop[0] = Type::CONTROL; | |
345 floop[1] = TypeInt::INT; | |
346 TypeTuple::LOOPBODY = TypeTuple::make( 2, floop ); | |
347 | |
348 TypePtr::NULL_PTR= TypePtr::make( AnyPtr, TypePtr::Null, 0 ); | |
349 TypePtr::NOTNULL = TypePtr::make( AnyPtr, TypePtr::NotNull, OffsetBot ); | |
350 TypePtr::BOTTOM = TypePtr::make( AnyPtr, TypePtr::BotPTR, OffsetBot ); | |
351 | |
352 TypeRawPtr::BOTTOM = TypeRawPtr::make( TypePtr::BotPTR ); | |
353 TypeRawPtr::NOTNULL= TypeRawPtr::make( TypePtr::NotNull ); | |
354 | |
355 const Type **fmembar = TypeTuple::fields(0); | |
356 TypeTuple::MEMBAR = TypeTuple::make(TypeFunc::Parms+0, fmembar); | |
357 | |
358 const Type **fsc = (const Type**)shared_type_arena->Amalloc_4(2*sizeof(Type*)); | |
359 fsc[0] = TypeInt::CC; | |
360 fsc[1] = Type::MEMORY; | |
361 TypeTuple::STORECONDITIONAL = TypeTuple::make(2, fsc); | |
362 | |
363 TypeInstPtr::NOTNULL = TypeInstPtr::make(TypePtr::NotNull, current->env()->Object_klass()); | |
364 TypeInstPtr::BOTTOM = TypeInstPtr::make(TypePtr::BotPTR, current->env()->Object_klass()); | |
365 TypeInstPtr::MIRROR = TypeInstPtr::make(TypePtr::NotNull, current->env()->Class_klass()); | |
366 TypeInstPtr::MARK = TypeInstPtr::make(TypePtr::BotPTR, current->env()->Object_klass(), | |
367 false, 0, oopDesc::mark_offset_in_bytes()); | |
368 TypeInstPtr::KLASS = TypeInstPtr::make(TypePtr::BotPTR, current->env()->Object_klass(), | |
369 false, 0, oopDesc::klass_offset_in_bytes()); | |
12966 | 370 TypeOopPtr::BOTTOM = TypeOopPtr::make(TypePtr::BotPTR, OffsetBot, TypeOopPtr::InstanceBot, NULL); |
0 | 371 |
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372 TypeMetadataPtr::BOTTOM = TypeMetadataPtr::make(TypePtr::BotPTR, NULL, OffsetBot); |
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373 |
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374 TypeNarrowOop::NULL_PTR = TypeNarrowOop::make( TypePtr::NULL_PTR ); |
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375 TypeNarrowOop::BOTTOM = TypeNarrowOop::make( TypeInstPtr::BOTTOM ); |
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376 |
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377 TypeNarrowKlass::NULL_PTR = TypeNarrowKlass::make( TypePtr::NULL_PTR ); |
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378 |
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379 mreg2type[Op_Node] = Type::BOTTOM; |
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380 mreg2type[Op_Set ] = 0; |
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381 mreg2type[Op_RegN] = TypeNarrowOop::BOTTOM; |
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382 mreg2type[Op_RegI] = TypeInt::INT; |
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383 mreg2type[Op_RegP] = TypePtr::BOTTOM; |
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384 mreg2type[Op_RegF] = Type::FLOAT; |
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385 mreg2type[Op_RegD] = Type::DOUBLE; |
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386 mreg2type[Op_RegL] = TypeLong::LONG; |
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387 mreg2type[Op_RegFlags] = TypeInt::CC; |
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388 |
1761 | 389 TypeAryPtr::RANGE = TypeAryPtr::make( TypePtr::BotPTR, TypeAry::make(Type::BOTTOM,TypeInt::POS), NULL /* current->env()->Object_klass() */, false, arrayOopDesc::length_offset_in_bytes()); |
163 | 390 |
391 TypeAryPtr::NARROWOOPS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeNarrowOop::BOTTOM, TypeInt::POS), NULL /*ciArrayKlass::make(o)*/, false, Type::OffsetBot); | |
392 | |
393 #ifdef _LP64 | |
394 if (UseCompressedOops) { | |
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395 assert(TypeAryPtr::NARROWOOPS->is_ptr_to_narrowoop(), "array of narrow oops must be ptr to narrow oop"); |
163 | 396 TypeAryPtr::OOPS = TypeAryPtr::NARROWOOPS; |
397 } else | |
398 #endif | |
399 { | |
400 // There is no shared klass for Object[]. See note in TypeAryPtr::klass(). | |
401 TypeAryPtr::OOPS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInstPtr::BOTTOM,TypeInt::POS), NULL /*ciArrayKlass::make(o)*/, false, Type::OffsetBot); | |
402 } | |
0 | 403 TypeAryPtr::BYTES = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInt::BYTE ,TypeInt::POS), ciTypeArrayKlass::make(T_BYTE), true, Type::OffsetBot); |
404 TypeAryPtr::SHORTS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInt::SHORT ,TypeInt::POS), ciTypeArrayKlass::make(T_SHORT), true, Type::OffsetBot); | |
405 TypeAryPtr::CHARS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInt::CHAR ,TypeInt::POS), ciTypeArrayKlass::make(T_CHAR), true, Type::OffsetBot); | |
406 TypeAryPtr::INTS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeInt::INT ,TypeInt::POS), ciTypeArrayKlass::make(T_INT), true, Type::OffsetBot); | |
407 TypeAryPtr::LONGS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(TypeLong::LONG ,TypeInt::POS), ciTypeArrayKlass::make(T_LONG), true, Type::OffsetBot); | |
408 TypeAryPtr::FLOATS = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(Type::FLOAT ,TypeInt::POS), ciTypeArrayKlass::make(T_FLOAT), true, Type::OffsetBot); | |
409 TypeAryPtr::DOUBLES = TypeAryPtr::make(TypePtr::BotPTR, TypeAry::make(Type::DOUBLE ,TypeInt::POS), ciTypeArrayKlass::make(T_DOUBLE), true, Type::OffsetBot); | |
410 | |
163 | 411 // Nobody should ask _array_body_type[T_NARROWOOP]. Use NULL as assert. |
412 TypeAryPtr::_array_body_type[T_NARROWOOP] = NULL; | |
0 | 413 TypeAryPtr::_array_body_type[T_OBJECT] = TypeAryPtr::OOPS; |
163 | 414 TypeAryPtr::_array_body_type[T_ARRAY] = TypeAryPtr::OOPS; // arrays are stored in oop arrays |
0 | 415 TypeAryPtr::_array_body_type[T_BYTE] = TypeAryPtr::BYTES; |
416 TypeAryPtr::_array_body_type[T_BOOLEAN] = TypeAryPtr::BYTES; // boolean[] is a byte array | |
417 TypeAryPtr::_array_body_type[T_SHORT] = TypeAryPtr::SHORTS; | |
418 TypeAryPtr::_array_body_type[T_CHAR] = TypeAryPtr::CHARS; | |
419 TypeAryPtr::_array_body_type[T_INT] = TypeAryPtr::INTS; | |
420 TypeAryPtr::_array_body_type[T_LONG] = TypeAryPtr::LONGS; | |
421 TypeAryPtr::_array_body_type[T_FLOAT] = TypeAryPtr::FLOATS; | |
422 TypeAryPtr::_array_body_type[T_DOUBLE] = TypeAryPtr::DOUBLES; | |
423 | |
424 TypeKlassPtr::OBJECT = TypeKlassPtr::make( TypePtr::NotNull, current->env()->Object_klass(), 0 ); | |
425 TypeKlassPtr::OBJECT_OR_NULL = TypeKlassPtr::make( TypePtr::BotPTR, current->env()->Object_klass(), 0 ); | |
426 | |
427 const Type **fi2c = TypeTuple::fields(2); | |
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428 fi2c[TypeFunc::Parms+0] = TypeInstPtr::BOTTOM; // Method* |
0 | 429 fi2c[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // argument pointer |
430 TypeTuple::START_I2C = TypeTuple::make(TypeFunc::Parms+2, fi2c); | |
431 | |
432 const Type **intpair = TypeTuple::fields(2); | |
433 intpair[0] = TypeInt::INT; | |
434 intpair[1] = TypeInt::INT; | |
435 TypeTuple::INT_PAIR = TypeTuple::make(2, intpair); | |
436 | |
437 const Type **longpair = TypeTuple::fields(2); | |
438 longpair[0] = TypeLong::LONG; | |
439 longpair[1] = TypeLong::LONG; | |
440 TypeTuple::LONG_PAIR = TypeTuple::make(2, longpair); | |
441 | |
12323 | 442 const Type **intccpair = TypeTuple::fields(2); |
443 intccpair[0] = TypeInt::INT; | |
444 intccpair[1] = TypeInt::CC; | |
445 TypeTuple::INT_CC_PAIR = TypeTuple::make(2, intccpair); | |
446 | |
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447 const Type **longccpair = TypeTuple::fields(2); |
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448 longccpair[0] = TypeLong::LONG; |
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449 longccpair[1] = TypeInt::CC; |
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450 TypeTuple::LONG_CC_PAIR = TypeTuple::make(2, longccpair); |
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451 |
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452 _const_basic_type[T_NARROWOOP] = TypeNarrowOop::BOTTOM; |
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453 _const_basic_type[T_NARROWKLASS] = Type::BOTTOM; |
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454 _const_basic_type[T_BOOLEAN] = TypeInt::BOOL; |
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455 _const_basic_type[T_CHAR] = TypeInt::CHAR; |
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456 _const_basic_type[T_BYTE] = TypeInt::BYTE; |
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457 _const_basic_type[T_SHORT] = TypeInt::SHORT; |
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458 _const_basic_type[T_INT] = TypeInt::INT; |
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459 _const_basic_type[T_LONG] = TypeLong::LONG; |
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460 _const_basic_type[T_FLOAT] = Type::FLOAT; |
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461 _const_basic_type[T_DOUBLE] = Type::DOUBLE; |
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462 _const_basic_type[T_OBJECT] = TypeInstPtr::BOTTOM; |
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463 _const_basic_type[T_ARRAY] = TypeInstPtr::BOTTOM; // there is no separate bottom for arrays |
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464 _const_basic_type[T_VOID] = TypePtr::NULL_PTR; // reflection represents void this way |
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465 _const_basic_type[T_ADDRESS] = TypeRawPtr::BOTTOM; // both interpreter return addresses & random raw ptrs |
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466 _const_basic_type[T_CONFLICT] = Type::BOTTOM; // why not? |
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467 |
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468 _zero_type[T_NARROWOOP] = TypeNarrowOop::NULL_PTR; |
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469 _zero_type[T_NARROWKLASS] = TypeNarrowKlass::NULL_PTR; |
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470 _zero_type[T_BOOLEAN] = TypeInt::ZERO; // false == 0 |
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471 _zero_type[T_CHAR] = TypeInt::ZERO; // '\0' == 0 |
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472 _zero_type[T_BYTE] = TypeInt::ZERO; // 0x00 == 0 |
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473 _zero_type[T_SHORT] = TypeInt::ZERO; // 0x0000 == 0 |
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474 _zero_type[T_INT] = TypeInt::ZERO; |
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475 _zero_type[T_LONG] = TypeLong::ZERO; |
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476 _zero_type[T_FLOAT] = TypeF::ZERO; |
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477 _zero_type[T_DOUBLE] = TypeD::ZERO; |
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478 _zero_type[T_OBJECT] = TypePtr::NULL_PTR; |
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479 _zero_type[T_ARRAY] = TypePtr::NULL_PTR; // null array is null oop |
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480 _zero_type[T_ADDRESS] = TypePtr::NULL_PTR; // raw pointers use the same null |
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481 _zero_type[T_VOID] = Type::TOP; // the only void value is no value at all |
0 | 482 |
483 // get_zero_type() should not happen for T_CONFLICT | |
484 _zero_type[T_CONFLICT]= NULL; | |
485 | |
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486 // Vector predefined types, it needs initialized _const_basic_type[]. |
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487 if (Matcher::vector_size_supported(T_BYTE,4)) { |
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488 TypeVect::VECTS = TypeVect::make(T_BYTE,4); |
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489 } |
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490 if (Matcher::vector_size_supported(T_FLOAT,2)) { |
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491 TypeVect::VECTD = TypeVect::make(T_FLOAT,2); |
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492 } |
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493 if (Matcher::vector_size_supported(T_FLOAT,4)) { |
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494 TypeVect::VECTX = TypeVect::make(T_FLOAT,4); |
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495 } |
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496 if (Matcher::vector_size_supported(T_FLOAT,8)) { |
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497 TypeVect::VECTY = TypeVect::make(T_FLOAT,8); |
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498 } |
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499 mreg2type[Op_VecS] = TypeVect::VECTS; |
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500 mreg2type[Op_VecD] = TypeVect::VECTD; |
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501 mreg2type[Op_VecX] = TypeVect::VECTX; |
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502 mreg2type[Op_VecY] = TypeVect::VECTY; |
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503 |
0 | 504 // Restore working type arena. |
505 current->set_type_arena(save); | |
506 current->set_type_dict(NULL); | |
507 } | |
508 | |
509 //------------------------------Initialize------------------------------------- | |
510 void Type::Initialize(Compile* current) { | |
511 assert(current->type_arena() != NULL, "must have created type arena"); | |
512 | |
513 if (_shared_type_dict == NULL) { | |
514 Initialize_shared(current); | |
515 } | |
516 | |
517 Arena* type_arena = current->type_arena(); | |
518 | |
519 // Create the hash-cons'ing dictionary with top-level storage allocation | |
520 Dict *tdic = new (type_arena) Dict( (CmpKey)Type::cmp,(Hash)Type::uhash, type_arena, 128 ); | |
521 current->set_type_dict(tdic); | |
522 | |
523 // Transfer the shared types. | |
524 DictI i(_shared_type_dict); | |
525 for( ; i.test(); ++i ) { | |
526 Type* t = (Type*)i._value; | |
527 tdic->Insert(t,t); // New Type, insert into Type table | |
528 } | |
529 } | |
530 | |
531 //------------------------------hashcons--------------------------------------- | |
532 // Do the hash-cons trick. If the Type already exists in the type table, | |
533 // delete the current Type and return the existing Type. Otherwise stick the | |
534 // current Type in the Type table. | |
535 const Type *Type::hashcons(void) { | |
536 debug_only(base()); // Check the assertion in Type::base(). | |
537 // Look up the Type in the Type dictionary | |
538 Dict *tdic = type_dict(); | |
539 Type* old = (Type*)(tdic->Insert(this, this, false)); | |
540 if( old ) { // Pre-existing Type? | |
541 if( old != this ) // Yes, this guy is not the pre-existing? | |
542 delete this; // Yes, Nuke this guy | |
543 assert( old->_dual, "" ); | |
544 return old; // Return pre-existing | |
545 } | |
546 | |
547 // Every type has a dual (to make my lattice symmetric). | |
548 // Since we just discovered a new Type, compute its dual right now. | |
549 assert( !_dual, "" ); // No dual yet | |
550 _dual = xdual(); // Compute the dual | |
551 if( cmp(this,_dual)==0 ) { // Handle self-symmetric | |
552 _dual = this; | |
553 return this; | |
554 } | |
555 assert( !_dual->_dual, "" ); // No reverse dual yet | |
556 assert( !(*tdic)[_dual], "" ); // Dual not in type system either | |
557 // New Type, insert into Type table | |
558 tdic->Insert((void*)_dual,(void*)_dual); | |
559 ((Type*)_dual)->_dual = this; // Finish up being symmetric | |
560 #ifdef ASSERT | |
561 Type *dual_dual = (Type*)_dual->xdual(); | |
562 assert( eq(dual_dual), "xdual(xdual()) should be identity" ); | |
563 delete dual_dual; | |
564 #endif | |
565 return this; // Return new Type | |
566 } | |
567 | |
568 //------------------------------eq--------------------------------------------- | |
569 // Structural equality check for Type representations | |
570 bool Type::eq( const Type * ) const { | |
571 return true; // Nothing else can go wrong | |
572 } | |
573 | |
574 //------------------------------hash------------------------------------------- | |
575 // Type-specific hashing function. | |
576 int Type::hash(void) const { | |
577 return _base; | |
578 } | |
579 | |
580 //------------------------------is_finite-------------------------------------- | |
581 // Has a finite value | |
582 bool Type::is_finite() const { | |
583 return false; | |
584 } | |
585 | |
586 //------------------------------is_nan----------------------------------------- | |
587 // Is not a number (NaN) | |
588 bool Type::is_nan() const { | |
589 return false; | |
590 } | |
591 | |
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592 //----------------------interface_vs_oop--------------------------------------- |
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593 #ifdef ASSERT |
12966 | 594 bool Type::interface_vs_oop_helper(const Type *t) const { |
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595 bool result = false; |
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596 |
992 | 597 const TypePtr* this_ptr = this->make_ptr(); // In case it is narrow_oop |
598 const TypePtr* t_ptr = t->make_ptr(); | |
599 if( this_ptr == NULL || t_ptr == NULL ) | |
600 return result; | |
601 | |
602 const TypeInstPtr* this_inst = this_ptr->isa_instptr(); | |
603 const TypeInstPtr* t_inst = t_ptr->isa_instptr(); | |
820
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604 if( this_inst && this_inst->is_loaded() && t_inst && t_inst->is_loaded() ) { |
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605 bool this_interface = this_inst->klass()->is_interface(); |
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606 bool t_interface = t_inst->klass()->is_interface(); |
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607 result = this_interface ^ t_interface; |
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608 } |
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609 |
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610 return result; |
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611 } |
12966 | 612 |
613 bool Type::interface_vs_oop(const Type *t) const { | |
614 if (interface_vs_oop_helper(t)) { | |
615 return true; | |
616 } | |
617 // Now check the speculative parts as well | |
618 const TypeOopPtr* this_spec = isa_oopptr() != NULL ? isa_oopptr()->speculative() : NULL; | |
619 const TypeOopPtr* t_spec = t->isa_oopptr() != NULL ? t->isa_oopptr()->speculative() : NULL; | |
620 if (this_spec != NULL && t_spec != NULL) { | |
621 if (this_spec->interface_vs_oop_helper(t_spec)) { | |
622 return true; | |
623 } | |
624 return false; | |
625 } | |
626 if (this_spec != NULL && this_spec->interface_vs_oop_helper(t)) { | |
627 return true; | |
628 } | |
629 if (t_spec != NULL && interface_vs_oop_helper(t_spec)) { | |
630 return true; | |
631 } | |
632 return false; | |
633 } | |
634 | |
820
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635 #endif |
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636 |
0 | 637 //------------------------------meet------------------------------------------- |
638 // Compute the MEET of two types. NOT virtual. It enforces that meet is | |
639 // commutative and the lattice is symmetric. | |
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640 const Type *Type::meet_helper(const Type *t, bool include_speculative) const { |
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641 if (isa_narrowoop() && t->isa_narrowoop()) { |
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642 const Type* result = make_ptr()->meet_helper(t->make_ptr(), include_speculative); |
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643 return result->make_narrowoop(); |
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644 } |
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645 if (isa_narrowklass() && t->isa_narrowklass()) { |
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646 const Type* result = make_ptr()->meet_helper(t->make_ptr(), include_speculative); |
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647 return result->make_narrowklass(); |
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648 } |
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649 |
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650 const Type *this_t = maybe_remove_speculative(include_speculative); |
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651 t = t->maybe_remove_speculative(include_speculative); |
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652 |
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653 const Type *mt = this_t->xmeet(t); |
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654 if (isa_narrowoop() || t->isa_narrowoop()) return mt; |
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655 if (isa_narrowklass() || t->isa_narrowklass()) return mt; |
0 | 656 #ifdef ASSERT |
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657 assert(mt == t->xmeet(this_t), "meet not commutative"); |
0 | 658 const Type* dual_join = mt->_dual; |
659 const Type *t2t = dual_join->xmeet(t->_dual); | |
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660 const Type *t2this = dual_join->xmeet(this_t->_dual); |
0 | 661 |
662 // Interface meet Oop is Not Symmetric: | |
663 // Interface:AnyNull meet Oop:AnyNull == Interface:AnyNull | |
664 // Interface:NotNull meet Oop:NotNull == java/lang/Object:NotNull | |
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665 |
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666 if( !interface_vs_oop(t) && (t2t != t->_dual || t2this != this_t->_dual) ) { |
0 | 667 tty->print_cr("=== Meet Not Symmetric ==="); |
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668 tty->print("t = "); t->dump(); tty->cr(); |
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669 tty->print("this= "); this_t->dump(); tty->cr(); |
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670 tty->print("mt=(t meet this)= "); mt->dump(); tty->cr(); |
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671 |
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672 tty->print("t_dual= "); t->_dual->dump(); tty->cr(); |
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673 tty->print("this_dual= "); this_t->_dual->dump(); tty->cr(); |
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674 tty->print("mt_dual= "); mt->_dual->dump(); tty->cr(); |
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675 |
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676 tty->print("mt_dual meet t_dual= "); t2t ->dump(); tty->cr(); |
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677 tty->print("mt_dual meet this_dual= "); t2this ->dump(); tty->cr(); |
0 | 678 |
679 fatal("meet not symmetric" ); | |
680 } | |
681 #endif | |
682 return mt; | |
683 } | |
684 | |
685 //------------------------------xmeet------------------------------------------ | |
686 // Compute the MEET of two types. It returns a new Type object. | |
687 const Type *Type::xmeet( const Type *t ) const { | |
688 // Perform a fast test for common case; meeting the same types together. | |
689 if( this == t ) return this; // Meeting same type-rep? | |
690 | |
691 // Meeting TOP with anything? | |
692 if( _base == Top ) return t; | |
693 | |
694 // Meeting BOTTOM with anything? | |
695 if( _base == Bottom ) return BOTTOM; | |
696 | |
697 // Current "this->_base" is one of: Bad, Multi, Control, Top, | |
698 // Abio, Abstore, Floatxxx, Doublexxx, Bottom, lastype. | |
699 switch (t->base()) { // Switch on original type | |
700 | |
701 // Cut in half the number of cases I must handle. Only need cases for when | |
702 // the given enum "t->type" is less than or equal to the local enum "type". | |
703 case FloatCon: | |
704 case DoubleCon: | |
705 case Int: | |
706 case Long: | |
707 return t->xmeet(this); | |
708 | |
709 case OopPtr: | |
710 return t->xmeet(this); | |
711 | |
712 case InstPtr: | |
713 return t->xmeet(this); | |
714 | |
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715 case MetadataPtr: |
0 | 716 case KlassPtr: |
717 return t->xmeet(this); | |
718 | |
719 case AryPtr: | |
720 return t->xmeet(this); | |
721 | |
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722 case NarrowOop: |
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723 return t->xmeet(this); |
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724 |
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725 case NarrowKlass: |
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726 return t->xmeet(this); |
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727 |
0 | 728 case Bad: // Type check |
729 default: // Bogus type not in lattice | |
730 typerr(t); | |
731 return Type::BOTTOM; | |
732 | |
733 case Bottom: // Ye Olde Default | |
734 return t; | |
735 | |
736 case FloatTop: | |
737 if( _base == FloatTop ) return this; | |
738 case FloatBot: // Float | |
739 if( _base == FloatBot || _base == FloatTop ) return FLOAT; | |
740 if( _base == DoubleTop || _base == DoubleBot ) return Type::BOTTOM; | |
741 typerr(t); | |
742 return Type::BOTTOM; | |
743 | |
744 case DoubleTop: | |
745 if( _base == DoubleTop ) return this; | |
746 case DoubleBot: // Double | |
747 if( _base == DoubleBot || _base == DoubleTop ) return DOUBLE; | |
748 if( _base == FloatTop || _base == FloatBot ) return Type::BOTTOM; | |
749 typerr(t); | |
750 return Type::BOTTOM; | |
751 | |
752 // These next few cases must match exactly or it is a compile-time error. | |
753 case Control: // Control of code | |
754 case Abio: // State of world outside of program | |
755 case Memory: | |
756 if( _base == t->_base ) return this; | |
757 typerr(t); | |
758 return Type::BOTTOM; | |
759 | |
760 case Top: // Top of the lattice | |
761 return this; | |
762 } | |
763 | |
764 // The type is unchanged | |
765 return this; | |
766 } | |
767 | |
768 //-----------------------------filter------------------------------------------ | |
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769 const Type *Type::filter_helper(const Type *kills, bool include_speculative) const { |
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770 const Type* ft = join_helper(kills, include_speculative); |
0 | 771 if (ft->empty()) |
772 return Type::TOP; // Canonical empty value | |
773 return ft; | |
774 } | |
775 | |
776 //------------------------------xdual------------------------------------------ | |
777 // Compute dual right now. | |
778 const Type::TYPES Type::dual_type[Type::lastype] = { | |
779 Bad, // Bad | |
780 Control, // Control | |
781 Bottom, // Top | |
782 Bad, // Int - handled in v-call | |
783 Bad, // Long - handled in v-call | |
784 Half, // Half | |
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785 Bad, // NarrowOop - handled in v-call |
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786 Bad, // NarrowKlass - handled in v-call |
0 | 787 |
788 Bad, // Tuple - handled in v-call | |
789 Bad, // Array - handled in v-call | |
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790 Bad, // VectorS - handled in v-call |
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791 Bad, // VectorD - handled in v-call |
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792 Bad, // VectorX - handled in v-call |
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793 Bad, // VectorY - handled in v-call |
0 | 794 |
795 Bad, // AnyPtr - handled in v-call | |
796 Bad, // RawPtr - handled in v-call | |
797 Bad, // OopPtr - handled in v-call | |
798 Bad, // InstPtr - handled in v-call | |
799 Bad, // AryPtr - handled in v-call | |
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800 |
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801 Bad, // MetadataPtr - handled in v-call |
0 | 802 Bad, // KlassPtr - handled in v-call |
803 | |
804 Bad, // Function - handled in v-call | |
805 Abio, // Abio | |
806 Return_Address,// Return_Address | |
807 Memory, // Memory | |
808 FloatBot, // FloatTop | |
809 FloatCon, // FloatCon | |
810 FloatTop, // FloatBot | |
811 DoubleBot, // DoubleTop | |
812 DoubleCon, // DoubleCon | |
813 DoubleTop, // DoubleBot | |
814 Top // Bottom | |
815 }; | |
816 | |
817 const Type *Type::xdual() const { | |
818 // Note: the base() accessor asserts the sanity of _base. | |
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819 assert(_type_info[base()].dual_type != Bad, "implement with v-call"); |
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820 return new Type(_type_info[_base].dual_type); |
0 | 821 } |
822 | |
823 //------------------------------has_memory------------------------------------- | |
824 bool Type::has_memory() const { | |
825 Type::TYPES tx = base(); | |
826 if (tx == Memory) return true; | |
827 if (tx == Tuple) { | |
828 const TypeTuple *t = is_tuple(); | |
829 for (uint i=0; i < t->cnt(); i++) { | |
830 tx = t->field_at(i)->base(); | |
831 if (tx == Memory) return true; | |
832 } | |
833 } | |
834 return false; | |
835 } | |
836 | |
837 #ifndef PRODUCT | |
838 //------------------------------dump2------------------------------------------ | |
839 void Type::dump2( Dict &d, uint depth, outputStream *st ) const { | |
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840 st->print(_type_info[_base].msg); |
0 | 841 } |
842 | |
843 //------------------------------dump------------------------------------------- | |
844 void Type::dump_on(outputStream *st) const { | |
845 ResourceMark rm; | |
846 Dict d(cmpkey,hashkey); // Stop recursive type dumping | |
847 dump2(d,1, st); | |
163 | 848 if (is_ptr_to_narrowoop()) { |
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849 st->print(" [narrow]"); |
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850 } else if (is_ptr_to_narrowklass()) { |
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851 st->print(" [narrowklass]"); |
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852 } |
0 | 853 } |
854 #endif | |
855 | |
856 //------------------------------singleton-------------------------------------- | |
857 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
858 // constants (Ldi nodes). Singletons are integer, float or double constants. | |
859 bool Type::singleton(void) const { | |
860 return _base == Top || _base == Half; | |
861 } | |
862 | |
863 //------------------------------empty------------------------------------------ | |
864 // TRUE if Type is a type with no values, FALSE otherwise. | |
865 bool Type::empty(void) const { | |
866 switch (_base) { | |
867 case DoubleTop: | |
868 case FloatTop: | |
869 case Top: | |
870 return true; | |
871 | |
872 case Half: | |
873 case Abio: | |
874 case Return_Address: | |
875 case Memory: | |
876 case Bottom: | |
877 case FloatBot: | |
878 case DoubleBot: | |
879 return false; // never a singleton, therefore never empty | |
880 } | |
881 | |
882 ShouldNotReachHere(); | |
883 return false; | |
884 } | |
885 | |
886 //------------------------------dump_stats------------------------------------- | |
887 // Dump collected statistics to stderr | |
888 #ifndef PRODUCT | |
889 void Type::dump_stats() { | |
890 tty->print("Types made: %d\n", type_dict()->Size()); | |
891 } | |
892 #endif | |
893 | |
894 //------------------------------typerr----------------------------------------- | |
895 void Type::typerr( const Type *t ) const { | |
896 #ifndef PRODUCT | |
897 tty->print("\nError mixing types: "); | |
898 dump(); | |
899 tty->print(" and "); | |
900 t->dump(); | |
901 tty->print("\n"); | |
902 #endif | |
903 ShouldNotReachHere(); | |
904 } | |
905 | |
906 | |
907 //============================================================================= | |
908 // Convenience common pre-built types. | |
909 const TypeF *TypeF::ZERO; // Floating point zero | |
910 const TypeF *TypeF::ONE; // Floating point one | |
911 | |
912 //------------------------------make------------------------------------------- | |
913 // Create a float constant | |
914 const TypeF *TypeF::make(float f) { | |
915 return (TypeF*)(new TypeF(f))->hashcons(); | |
916 } | |
917 | |
918 //------------------------------meet------------------------------------------- | |
919 // Compute the MEET of two types. It returns a new Type object. | |
920 const Type *TypeF::xmeet( const Type *t ) const { | |
921 // Perform a fast test for common case; meeting the same types together. | |
922 if( this == t ) return this; // Meeting same type-rep? | |
923 | |
924 // Current "this->_base" is FloatCon | |
925 switch (t->base()) { // Switch on original type | |
926 case AnyPtr: // Mixing with oops happens when javac | |
927 case RawPtr: // reuses local variables | |
928 case OopPtr: | |
929 case InstPtr: | |
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930 case AryPtr: |
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931 case MetadataPtr: |
0 | 932 case KlassPtr: |
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933 case NarrowOop: |
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934 case NarrowKlass: |
0 | 935 case Int: |
936 case Long: | |
937 case DoubleTop: | |
938 case DoubleCon: | |
939 case DoubleBot: | |
940 case Bottom: // Ye Olde Default | |
941 return Type::BOTTOM; | |
942 | |
943 case FloatBot: | |
944 return t; | |
945 | |
946 default: // All else is a mistake | |
947 typerr(t); | |
948 | |
949 case FloatCon: // Float-constant vs Float-constant? | |
950 if( jint_cast(_f) != jint_cast(t->getf()) ) // unequal constants? | |
951 // must compare bitwise as positive zero, negative zero and NaN have | |
952 // all the same representation in C++ | |
953 return FLOAT; // Return generic float | |
954 // Equal constants | |
955 case Top: | |
956 case FloatTop: | |
957 break; // Return the float constant | |
958 } | |
959 return this; // Return the float constant | |
960 } | |
961 | |
962 //------------------------------xdual------------------------------------------ | |
963 // Dual: symmetric | |
964 const Type *TypeF::xdual() const { | |
965 return this; | |
966 } | |
967 | |
968 //------------------------------eq--------------------------------------------- | |
969 // Structural equality check for Type representations | |
970 bool TypeF::eq( const Type *t ) const { | |
971 if( g_isnan(_f) || | |
972 g_isnan(t->getf()) ) { | |
973 // One or both are NANs. If both are NANs return true, else false. | |
974 return (g_isnan(_f) && g_isnan(t->getf())); | |
975 } | |
976 if (_f == t->getf()) { | |
977 // (NaN is impossible at this point, since it is not equal even to itself) | |
978 if (_f == 0.0) { | |
979 // difference between positive and negative zero | |
980 if (jint_cast(_f) != jint_cast(t->getf())) return false; | |
981 } | |
982 return true; | |
983 } | |
984 return false; | |
985 } | |
986 | |
987 //------------------------------hash------------------------------------------- | |
988 // Type-specific hashing function. | |
989 int TypeF::hash(void) const { | |
990 return *(int*)(&_f); | |
991 } | |
992 | |
993 //------------------------------is_finite-------------------------------------- | |
994 // Has a finite value | |
995 bool TypeF::is_finite() const { | |
996 return g_isfinite(getf()) != 0; | |
997 } | |
998 | |
999 //------------------------------is_nan----------------------------------------- | |
1000 // Is not a number (NaN) | |
1001 bool TypeF::is_nan() const { | |
1002 return g_isnan(getf()) != 0; | |
1003 } | |
1004 | |
1005 //------------------------------dump2------------------------------------------ | |
1006 // Dump float constant Type | |
1007 #ifndef PRODUCT | |
1008 void TypeF::dump2( Dict &d, uint depth, outputStream *st ) const { | |
1009 Type::dump2(d,depth, st); | |
1010 st->print("%f", _f); | |
1011 } | |
1012 #endif | |
1013 | |
1014 //------------------------------singleton-------------------------------------- | |
1015 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
1016 // constants (Ldi nodes). Singletons are integer, float or double constants | |
1017 // or a single symbol. | |
1018 bool TypeF::singleton(void) const { | |
1019 return true; // Always a singleton | |
1020 } | |
1021 | |
1022 bool TypeF::empty(void) const { | |
1023 return false; // always exactly a singleton | |
1024 } | |
1025 | |
1026 //============================================================================= | |
1027 // Convenience common pre-built types. | |
1028 const TypeD *TypeD::ZERO; // Floating point zero | |
1029 const TypeD *TypeD::ONE; // Floating point one | |
1030 | |
1031 //------------------------------make------------------------------------------- | |
1032 const TypeD *TypeD::make(double d) { | |
1033 return (TypeD*)(new TypeD(d))->hashcons(); | |
1034 } | |
1035 | |
1036 //------------------------------meet------------------------------------------- | |
1037 // Compute the MEET of two types. It returns a new Type object. | |
1038 const Type *TypeD::xmeet( const Type *t ) const { | |
1039 // Perform a fast test for common case; meeting the same types together. | |
1040 if( this == t ) return this; // Meeting same type-rep? | |
1041 | |
1042 // Current "this->_base" is DoubleCon | |
1043 switch (t->base()) { // Switch on original type | |
1044 case AnyPtr: // Mixing with oops happens when javac | |
1045 case RawPtr: // reuses local variables | |
1046 case OopPtr: | |
1047 case InstPtr: | |
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1048 case AryPtr: |
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1049 case MetadataPtr: |
0 | 1050 case KlassPtr: |
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1051 case NarrowOop: |
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1052 case NarrowKlass: |
0 | 1053 case Int: |
1054 case Long: | |
1055 case FloatTop: | |
1056 case FloatCon: | |
1057 case FloatBot: | |
1058 case Bottom: // Ye Olde Default | |
1059 return Type::BOTTOM; | |
1060 | |
1061 case DoubleBot: | |
1062 return t; | |
1063 | |
1064 default: // All else is a mistake | |
1065 typerr(t); | |
1066 | |
1067 case DoubleCon: // Double-constant vs Double-constant? | |
1068 if( jlong_cast(_d) != jlong_cast(t->getd()) ) // unequal constants? (see comment in TypeF::xmeet) | |
1069 return DOUBLE; // Return generic double | |
1070 case Top: | |
1071 case DoubleTop: | |
1072 break; | |
1073 } | |
1074 return this; // Return the double constant | |
1075 } | |
1076 | |
1077 //------------------------------xdual------------------------------------------ | |
1078 // Dual: symmetric | |
1079 const Type *TypeD::xdual() const { | |
1080 return this; | |
1081 } | |
1082 | |
1083 //------------------------------eq--------------------------------------------- | |
1084 // Structural equality check for Type representations | |
1085 bool TypeD::eq( const Type *t ) const { | |
1086 if( g_isnan(_d) || | |
1087 g_isnan(t->getd()) ) { | |
1088 // One or both are NANs. If both are NANs return true, else false. | |
1089 return (g_isnan(_d) && g_isnan(t->getd())); | |
1090 } | |
1091 if (_d == t->getd()) { | |
1092 // (NaN is impossible at this point, since it is not equal even to itself) | |
1093 if (_d == 0.0) { | |
1094 // difference between positive and negative zero | |
1095 if (jlong_cast(_d) != jlong_cast(t->getd())) return false; | |
1096 } | |
1097 return true; | |
1098 } | |
1099 return false; | |
1100 } | |
1101 | |
1102 //------------------------------hash------------------------------------------- | |
1103 // Type-specific hashing function. | |
1104 int TypeD::hash(void) const { | |
1105 return *(int*)(&_d); | |
1106 } | |
1107 | |
1108 //------------------------------is_finite-------------------------------------- | |
1109 // Has a finite value | |
1110 bool TypeD::is_finite() const { | |
1111 return g_isfinite(getd()) != 0; | |
1112 } | |
1113 | |
1114 //------------------------------is_nan----------------------------------------- | |
1115 // Is not a number (NaN) | |
1116 bool TypeD::is_nan() const { | |
1117 return g_isnan(getd()) != 0; | |
1118 } | |
1119 | |
1120 //------------------------------dump2------------------------------------------ | |
1121 // Dump double constant Type | |
1122 #ifndef PRODUCT | |
1123 void TypeD::dump2( Dict &d, uint depth, outputStream *st ) const { | |
1124 Type::dump2(d,depth,st); | |
1125 st->print("%f", _d); | |
1126 } | |
1127 #endif | |
1128 | |
1129 //------------------------------singleton-------------------------------------- | |
1130 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
1131 // constants (Ldi nodes). Singletons are integer, float or double constants | |
1132 // or a single symbol. | |
1133 bool TypeD::singleton(void) const { | |
1134 return true; // Always a singleton | |
1135 } | |
1136 | |
1137 bool TypeD::empty(void) const { | |
1138 return false; // always exactly a singleton | |
1139 } | |
1140 | |
1141 //============================================================================= | |
1142 // Convience common pre-built types. | |
1143 const TypeInt *TypeInt::MINUS_1;// -1 | |
1144 const TypeInt *TypeInt::ZERO; // 0 | |
1145 const TypeInt *TypeInt::ONE; // 1 | |
1146 const TypeInt *TypeInt::BOOL; // 0 or 1, FALSE or TRUE. | |
1147 const TypeInt *TypeInt::CC; // -1,0 or 1, condition codes | |
1148 const TypeInt *TypeInt::CC_LT; // [-1] == MINUS_1 | |
1149 const TypeInt *TypeInt::CC_GT; // [1] == ONE | |
1150 const TypeInt *TypeInt::CC_EQ; // [0] == ZERO | |
1151 const TypeInt *TypeInt::CC_LE; // [-1,0] | |
1152 const TypeInt *TypeInt::CC_GE; // [0,1] == BOOL (!) | |
1153 const TypeInt *TypeInt::BYTE; // Bytes, -128 to 127 | |
624 | 1154 const TypeInt *TypeInt::UBYTE; // Unsigned Bytes, 0 to 255 |
0 | 1155 const TypeInt *TypeInt::CHAR; // Java chars, 0-65535 |
1156 const TypeInt *TypeInt::SHORT; // Java shorts, -32768-32767 | |
1157 const TypeInt *TypeInt::POS; // Positive 32-bit integers or zero | |
1158 const TypeInt *TypeInt::POS1; // Positive 32-bit integers | |
1159 const TypeInt *TypeInt::INT; // 32-bit integers | |
1160 const TypeInt *TypeInt::SYMINT; // symmetric range [-max_jint..max_jint] | |
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1161 const TypeInt *TypeInt::TYPE_DOMAIN; // alias for TypeInt::INT |
0 | 1162 |
1163 //------------------------------TypeInt---------------------------------------- | |
1164 TypeInt::TypeInt( jint lo, jint hi, int w ) : Type(Int), _lo(lo), _hi(hi), _widen(w) { | |
1165 } | |
1166 | |
1167 //------------------------------make------------------------------------------- | |
1168 const TypeInt *TypeInt::make( jint lo ) { | |
1169 return (TypeInt*)(new TypeInt(lo,lo,WidenMin))->hashcons(); | |
1170 } | |
1171 | |
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1172 static int normalize_int_widen( jint lo, jint hi, int w ) { |
0 | 1173 // Certain normalizations keep us sane when comparing types. |
1174 // The 'SMALLINT' covers constants and also CC and its relatives. | |
1175 if (lo <= hi) { | |
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1176 if ((juint)(hi - lo) <= SMALLINT) w = Type::WidenMin; |
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1177 if ((juint)(hi - lo) >= max_juint) w = Type::WidenMax; // TypeInt::INT |
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1178 } else { |
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1179 if ((juint)(lo - hi) <= SMALLINT) w = Type::WidenMin; |
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1180 if ((juint)(lo - hi) >= max_juint) w = Type::WidenMin; // dual TypeInt::INT |
0 | 1181 } |
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1182 return w; |
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1183 } |
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1184 |
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1185 const TypeInt *TypeInt::make( jint lo, jint hi, int w ) { |
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1186 w = normalize_int_widen(lo, hi, w); |
0 | 1187 return (TypeInt*)(new TypeInt(lo,hi,w))->hashcons(); |
1188 } | |
1189 | |
1190 //------------------------------meet------------------------------------------- | |
1191 // Compute the MEET of two types. It returns a new Type representation object | |
1192 // with reference count equal to the number of Types pointing at it. | |
1193 // Caller should wrap a Types around it. | |
1194 const Type *TypeInt::xmeet( const Type *t ) const { | |
1195 // Perform a fast test for common case; meeting the same types together. | |
1196 if( this == t ) return this; // Meeting same type? | |
1197 | |
1198 // Currently "this->_base" is a TypeInt | |
1199 switch (t->base()) { // Switch on original type | |
1200 case AnyPtr: // Mixing with oops happens when javac | |
1201 case RawPtr: // reuses local variables | |
1202 case OopPtr: | |
1203 case InstPtr: | |
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1204 case AryPtr: |
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1205 case MetadataPtr: |
0 | 1206 case KlassPtr: |
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1207 case NarrowOop: |
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1208 case NarrowKlass: |
0 | 1209 case Long: |
1210 case FloatTop: | |
1211 case FloatCon: | |
1212 case FloatBot: | |
1213 case DoubleTop: | |
1214 case DoubleCon: | |
1215 case DoubleBot: | |
1216 case Bottom: // Ye Olde Default | |
1217 return Type::BOTTOM; | |
1218 default: // All else is a mistake | |
1219 typerr(t); | |
1220 case Top: // No change | |
1221 return this; | |
1222 case Int: // Int vs Int? | |
1223 break; | |
1224 } | |
1225 | |
1226 // Expand covered set | |
1227 const TypeInt *r = t->is_int(); | |
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1228 return make( MIN2(_lo,r->_lo), MAX2(_hi,r->_hi), MAX2(_widen,r->_widen) ); |
0 | 1229 } |
1230 | |
1231 //------------------------------xdual------------------------------------------ | |
1232 // Dual: reverse hi & lo; flip widen | |
1233 const Type *TypeInt::xdual() const { | |
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1234 int w = normalize_int_widen(_hi,_lo, WidenMax-_widen); |
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1235 return new TypeInt(_hi,_lo,w); |
0 | 1236 } |
1237 | |
1238 //------------------------------widen------------------------------------------ | |
1239 // Only happens for optimistic top-down optimizations. | |
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1240 const Type *TypeInt::widen( const Type *old, const Type* limit ) const { |
0 | 1241 // Coming from TOP or such; no widening |
1242 if( old->base() != Int ) return this; | |
1243 const TypeInt *ot = old->is_int(); | |
1244 | |
1245 // If new guy is equal to old guy, no widening | |
1246 if( _lo == ot->_lo && _hi == ot->_hi ) | |
1247 return old; | |
1248 | |
1249 // If new guy contains old, then we widened | |
1250 if( _lo <= ot->_lo && _hi >= ot->_hi ) { | |
1251 // New contains old | |
1252 // If new guy is already wider than old, no widening | |
1253 if( _widen > ot->_widen ) return this; | |
1254 // If old guy was a constant, do not bother | |
1255 if (ot->_lo == ot->_hi) return this; | |
1256 // Now widen new guy. | |
1257 // Check for widening too far | |
1258 if (_widen == WidenMax) { | |
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1259 int max = max_jint; |
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1260 int min = min_jint; |
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1261 if (limit->isa_int()) { |
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1262 max = limit->is_int()->_hi; |
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1263 min = limit->is_int()->_lo; |
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1264 } |
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1265 if (min < _lo && _hi < max) { |
0 | 1266 // If neither endpoint is extremal yet, push out the endpoint |
1267 // which is closer to its respective limit. | |
1268 if (_lo >= 0 || // easy common case | |
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1269 (juint)(_lo - min) >= (juint)(max - _hi)) { |
0 | 1270 // Try to widen to an unsigned range type of 31 bits: |
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1271 return make(_lo, max, WidenMax); |
0 | 1272 } else { |
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1273 return make(min, _hi, WidenMax); |
0 | 1274 } |
1275 } | |
1276 return TypeInt::INT; | |
1277 } | |
1278 // Returned widened new guy | |
1279 return make(_lo,_hi,_widen+1); | |
1280 } | |
1281 | |
1282 // If old guy contains new, then we probably widened too far & dropped to | |
1283 // bottom. Return the wider fellow. | |
1284 if ( ot->_lo <= _lo && ot->_hi >= _hi ) | |
1285 return old; | |
1286 | |
1287 //fatal("Integer value range is not subset"); | |
1288 //return this; | |
1289 return TypeInt::INT; | |
1290 } | |
1291 | |
1292 //------------------------------narrow--------------------------------------- | |
1293 // Only happens for pessimistic optimizations. | |
1294 const Type *TypeInt::narrow( const Type *old ) const { | |
1295 if (_lo >= _hi) return this; // already narrow enough | |
1296 if (old == NULL) return this; | |
1297 const TypeInt* ot = old->isa_int(); | |
1298 if (ot == NULL) return this; | |
1299 jint olo = ot->_lo; | |
1300 jint ohi = ot->_hi; | |
1301 | |
1302 // If new guy is equal to old guy, no narrowing | |
1303 if (_lo == olo && _hi == ohi) return old; | |
1304 | |
1305 // If old guy was maximum range, allow the narrowing | |
1306 if (olo == min_jint && ohi == max_jint) return this; | |
1307 | |
1308 if (_lo < olo || _hi > ohi) | |
1309 return this; // doesn't narrow; pretty wierd | |
1310 | |
1311 // The new type narrows the old type, so look for a "death march". | |
1312 // See comments on PhaseTransform::saturate. | |
1313 juint nrange = _hi - _lo; | |
1314 juint orange = ohi - olo; | |
1315 if (nrange < max_juint - 1 && nrange > (orange >> 1) + (SMALLINT*2)) { | |
1316 // Use the new type only if the range shrinks a lot. | |
1317 // We do not want the optimizer computing 2^31 point by point. | |
1318 return old; | |
1319 } | |
1320 | |
1321 return this; | |
1322 } | |
1323 | |
1324 //-----------------------------filter------------------------------------------ | |
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1325 const Type *TypeInt::filter_helper(const Type *kills, bool include_speculative) const { |
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1326 const TypeInt* ft = join_helper(kills, include_speculative)->isa_int(); |
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1327 if (ft == NULL || ft->empty()) |
0 | 1328 return Type::TOP; // Canonical empty value |
1329 if (ft->_widen < this->_widen) { | |
1330 // Do not allow the value of kill->_widen to affect the outcome. | |
1331 // The widen bits must be allowed to run freely through the graph. | |
1332 ft = TypeInt::make(ft->_lo, ft->_hi, this->_widen); | |
1333 } | |
1334 return ft; | |
1335 } | |
1336 | |
1337 //------------------------------eq--------------------------------------------- | |
1338 // Structural equality check for Type representations | |
1339 bool TypeInt::eq( const Type *t ) const { | |
1340 const TypeInt *r = t->is_int(); // Handy access | |
1341 return r->_lo == _lo && r->_hi == _hi && r->_widen == _widen; | |
1342 } | |
1343 | |
1344 //------------------------------hash------------------------------------------- | |
1345 // Type-specific hashing function. | |
1346 int TypeInt::hash(void) const { | |
1347 return _lo+_hi+_widen+(int)Type::Int; | |
1348 } | |
1349 | |
1350 //------------------------------is_finite-------------------------------------- | |
1351 // Has a finite value | |
1352 bool TypeInt::is_finite() const { | |
1353 return true; | |
1354 } | |
1355 | |
1356 //------------------------------dump2------------------------------------------ | |
1357 // Dump TypeInt | |
1358 #ifndef PRODUCT | |
1359 static const char* intname(char* buf, jint n) { | |
1360 if (n == min_jint) | |
1361 return "min"; | |
1362 else if (n < min_jint + 10000) | |
1363 sprintf(buf, "min+" INT32_FORMAT, n - min_jint); | |
1364 else if (n == max_jint) | |
1365 return "max"; | |
1366 else if (n > max_jint - 10000) | |
1367 sprintf(buf, "max-" INT32_FORMAT, max_jint - n); | |
1368 else | |
1369 sprintf(buf, INT32_FORMAT, n); | |
1370 return buf; | |
1371 } | |
1372 | |
1373 void TypeInt::dump2( Dict &d, uint depth, outputStream *st ) const { | |
1374 char buf[40], buf2[40]; | |
1375 if (_lo == min_jint && _hi == max_jint) | |
1376 st->print("int"); | |
1377 else if (is_con()) | |
1378 st->print("int:%s", intname(buf, get_con())); | |
1379 else if (_lo == BOOL->_lo && _hi == BOOL->_hi) | |
1380 st->print("bool"); | |
1381 else if (_lo == BYTE->_lo && _hi == BYTE->_hi) | |
1382 st->print("byte"); | |
1383 else if (_lo == CHAR->_lo && _hi == CHAR->_hi) | |
1384 st->print("char"); | |
1385 else if (_lo == SHORT->_lo && _hi == SHORT->_hi) | |
1386 st->print("short"); | |
1387 else if (_hi == max_jint) | |
1388 st->print("int:>=%s", intname(buf, _lo)); | |
1389 else if (_lo == min_jint) | |
1390 st->print("int:<=%s", intname(buf, _hi)); | |
1391 else | |
1392 st->print("int:%s..%s", intname(buf, _lo), intname(buf2, _hi)); | |
1393 | |
1394 if (_widen != 0 && this != TypeInt::INT) | |
1395 st->print(":%.*s", _widen, "wwww"); | |
1396 } | |
1397 #endif | |
1398 | |
1399 //------------------------------singleton-------------------------------------- | |
1400 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
1401 // constants. | |
1402 bool TypeInt::singleton(void) const { | |
1403 return _lo >= _hi; | |
1404 } | |
1405 | |
1406 bool TypeInt::empty(void) const { | |
1407 return _lo > _hi; | |
1408 } | |
1409 | |
1410 //============================================================================= | |
1411 // Convenience common pre-built types. | |
1412 const TypeLong *TypeLong::MINUS_1;// -1 | |
1413 const TypeLong *TypeLong::ZERO; // 0 | |
1414 const TypeLong *TypeLong::ONE; // 1 | |
1415 const TypeLong *TypeLong::POS; // >=0 | |
1416 const TypeLong *TypeLong::LONG; // 64-bit integers | |
1417 const TypeLong *TypeLong::INT; // 32-bit subrange | |
1418 const TypeLong *TypeLong::UINT; // 32-bit unsigned subrange | |
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1419 const TypeLong *TypeLong::TYPE_DOMAIN; // alias for TypeLong::LONG |
0 | 1420 |
1421 //------------------------------TypeLong--------------------------------------- | |
1422 TypeLong::TypeLong( jlong lo, jlong hi, int w ) : Type(Long), _lo(lo), _hi(hi), _widen(w) { | |
1423 } | |
1424 | |
1425 //------------------------------make------------------------------------------- | |
1426 const TypeLong *TypeLong::make( jlong lo ) { | |
1427 return (TypeLong*)(new TypeLong(lo,lo,WidenMin))->hashcons(); | |
1428 } | |
1429 | |
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1430 static int normalize_long_widen( jlong lo, jlong hi, int w ) { |
0 | 1431 // Certain normalizations keep us sane when comparing types. |
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1432 // The 'SMALLINT' covers constants. |
0 | 1433 if (lo <= hi) { |
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1434 if ((julong)(hi - lo) <= SMALLINT) w = Type::WidenMin; |
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1435 if ((julong)(hi - lo) >= max_julong) w = Type::WidenMax; // TypeLong::LONG |
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1436 } else { |
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1437 if ((julong)(lo - hi) <= SMALLINT) w = Type::WidenMin; |
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1438 if ((julong)(lo - hi) >= max_julong) w = Type::WidenMin; // dual TypeLong::LONG |
0 | 1439 } |
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1440 return w; |
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1441 } |
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1442 |
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1443 const TypeLong *TypeLong::make( jlong lo, jlong hi, int w ) { |
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1444 w = normalize_long_widen(lo, hi, w); |
0 | 1445 return (TypeLong*)(new TypeLong(lo,hi,w))->hashcons(); |
1446 } | |
1447 | |
1448 | |
1449 //------------------------------meet------------------------------------------- | |
1450 // Compute the MEET of two types. It returns a new Type representation object | |
1451 // with reference count equal to the number of Types pointing at it. | |
1452 // Caller should wrap a Types around it. | |
1453 const Type *TypeLong::xmeet( const Type *t ) const { | |
1454 // Perform a fast test for common case; meeting the same types together. | |
1455 if( this == t ) return this; // Meeting same type? | |
1456 | |
1457 // Currently "this->_base" is a TypeLong | |
1458 switch (t->base()) { // Switch on original type | |
1459 case AnyPtr: // Mixing with oops happens when javac | |
1460 case RawPtr: // reuses local variables | |
1461 case OopPtr: | |
1462 case InstPtr: | |
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1463 case AryPtr: |
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1464 case MetadataPtr: |
0 | 1465 case KlassPtr: |
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1466 case NarrowOop: |
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1467 case NarrowKlass: |
0 | 1468 case Int: |
1469 case FloatTop: | |
1470 case FloatCon: | |
1471 case FloatBot: | |
1472 case DoubleTop: | |
1473 case DoubleCon: | |
1474 case DoubleBot: | |
1475 case Bottom: // Ye Olde Default | |
1476 return Type::BOTTOM; | |
1477 default: // All else is a mistake | |
1478 typerr(t); | |
1479 case Top: // No change | |
1480 return this; | |
1481 case Long: // Long vs Long? | |
1482 break; | |
1483 } | |
1484 | |
1485 // Expand covered set | |
1486 const TypeLong *r = t->is_long(); // Turn into a TypeLong | |
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1487 return make( MIN2(_lo,r->_lo), MAX2(_hi,r->_hi), MAX2(_widen,r->_widen) ); |
0 | 1488 } |
1489 | |
1490 //------------------------------xdual------------------------------------------ | |
1491 // Dual: reverse hi & lo; flip widen | |
1492 const Type *TypeLong::xdual() const { | |
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1493 int w = normalize_long_widen(_hi,_lo, WidenMax-_widen); |
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1494 return new TypeLong(_hi,_lo,w); |
0 | 1495 } |
1496 | |
1497 //------------------------------widen------------------------------------------ | |
1498 // Only happens for optimistic top-down optimizations. | |
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1499 const Type *TypeLong::widen( const Type *old, const Type* limit ) const { |
0 | 1500 // Coming from TOP or such; no widening |
1501 if( old->base() != Long ) return this; | |
1502 const TypeLong *ot = old->is_long(); | |
1503 | |
1504 // If new guy is equal to old guy, no widening | |
1505 if( _lo == ot->_lo && _hi == ot->_hi ) | |
1506 return old; | |
1507 | |
1508 // If new guy contains old, then we widened | |
1509 if( _lo <= ot->_lo && _hi >= ot->_hi ) { | |
1510 // New contains old | |
1511 // If new guy is already wider than old, no widening | |
1512 if( _widen > ot->_widen ) return this; | |
1513 // If old guy was a constant, do not bother | |
1514 if (ot->_lo == ot->_hi) return this; | |
1515 // Now widen new guy. | |
1516 // Check for widening too far | |
1517 if (_widen == WidenMax) { | |
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1518 jlong max = max_jlong; |
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1519 jlong min = min_jlong; |
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1520 if (limit->isa_long()) { |
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1521 max = limit->is_long()->_hi; |
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1522 min = limit->is_long()->_lo; |
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1523 } |
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1524 if (min < _lo && _hi < max) { |
0 | 1525 // If neither endpoint is extremal yet, push out the endpoint |
1526 // which is closer to its respective limit. | |
1527 if (_lo >= 0 || // easy common case | |
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1528 (julong)(_lo - min) >= (julong)(max - _hi)) { |
0 | 1529 // Try to widen to an unsigned range type of 32/63 bits: |
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1530 if (max >= max_juint && _hi < max_juint) |
0 | 1531 return make(_lo, max_juint, WidenMax); |
1532 else | |
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1533 return make(_lo, max, WidenMax); |
0 | 1534 } else { |
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1535 return make(min, _hi, WidenMax); |
0 | 1536 } |
1537 } | |
1538 return TypeLong::LONG; | |
1539 } | |
1540 // Returned widened new guy | |
1541 return make(_lo,_hi,_widen+1); | |
1542 } | |
1543 | |
1544 // If old guy contains new, then we probably widened too far & dropped to | |
1545 // bottom. Return the wider fellow. | |
1546 if ( ot->_lo <= _lo && ot->_hi >= _hi ) | |
1547 return old; | |
1548 | |
1549 // fatal("Long value range is not subset"); | |
1550 // return this; | |
1551 return TypeLong::LONG; | |
1552 } | |
1553 | |
1554 //------------------------------narrow---------------------------------------- | |
1555 // Only happens for pessimistic optimizations. | |
1556 const Type *TypeLong::narrow( const Type *old ) const { | |
1557 if (_lo >= _hi) return this; // already narrow enough | |
1558 if (old == NULL) return this; | |
1559 const TypeLong* ot = old->isa_long(); | |
1560 if (ot == NULL) return this; | |
1561 jlong olo = ot->_lo; | |
1562 jlong ohi = ot->_hi; | |
1563 | |
1564 // If new guy is equal to old guy, no narrowing | |
1565 if (_lo == olo && _hi == ohi) return old; | |
1566 | |
1567 // If old guy was maximum range, allow the narrowing | |
1568 if (olo == min_jlong && ohi == max_jlong) return this; | |
1569 | |
1570 if (_lo < olo || _hi > ohi) | |
1571 return this; // doesn't narrow; pretty wierd | |
1572 | |
1573 // The new type narrows the old type, so look for a "death march". | |
1574 // See comments on PhaseTransform::saturate. | |
1575 julong nrange = _hi - _lo; | |
1576 julong orange = ohi - olo; | |
1577 if (nrange < max_julong - 1 && nrange > (orange >> 1) + (SMALLINT*2)) { | |
1578 // Use the new type only if the range shrinks a lot. | |
1579 // We do not want the optimizer computing 2^31 point by point. | |
1580 return old; | |
1581 } | |
1582 | |
1583 return this; | |
1584 } | |
1585 | |
1586 //-----------------------------filter------------------------------------------ | |
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1587 const Type *TypeLong::filter_helper(const Type *kills, bool include_speculative) const { |
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1588 const TypeLong* ft = join_helper(kills, include_speculative)->isa_long(); |
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1589 if (ft == NULL || ft->empty()) |
0 | 1590 return Type::TOP; // Canonical empty value |
1591 if (ft->_widen < this->_widen) { | |
1592 // Do not allow the value of kill->_widen to affect the outcome. | |
1593 // The widen bits must be allowed to run freely through the graph. | |
1594 ft = TypeLong::make(ft->_lo, ft->_hi, this->_widen); | |
1595 } | |
1596 return ft; | |
1597 } | |
1598 | |
1599 //------------------------------eq--------------------------------------------- | |
1600 // Structural equality check for Type representations | |
1601 bool TypeLong::eq( const Type *t ) const { | |
1602 const TypeLong *r = t->is_long(); // Handy access | |
1603 return r->_lo == _lo && r->_hi == _hi && r->_widen == _widen; | |
1604 } | |
1605 | |
1606 //------------------------------hash------------------------------------------- | |
1607 // Type-specific hashing function. | |
1608 int TypeLong::hash(void) const { | |
1609 return (int)(_lo+_hi+_widen+(int)Type::Long); | |
1610 } | |
1611 | |
1612 //------------------------------is_finite-------------------------------------- | |
1613 // Has a finite value | |
1614 bool TypeLong::is_finite() const { | |
1615 return true; | |
1616 } | |
1617 | |
1618 //------------------------------dump2------------------------------------------ | |
1619 // Dump TypeLong | |
1620 #ifndef PRODUCT | |
1621 static const char* longnamenear(jlong x, const char* xname, char* buf, jlong n) { | |
1622 if (n > x) { | |
1623 if (n >= x + 10000) return NULL; | |
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1624 sprintf(buf, "%s+" JLONG_FORMAT, xname, n - x); |
0 | 1625 } else if (n < x) { |
1626 if (n <= x - 10000) return NULL; | |
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1627 sprintf(buf, "%s-" JLONG_FORMAT, xname, x - n); |
0 | 1628 } else { |
1629 return xname; | |
1630 } | |
1631 return buf; | |
1632 } | |
1633 | |
1634 static const char* longname(char* buf, jlong n) { | |
1635 const char* str; | |
1636 if (n == min_jlong) | |
1637 return "min"; | |
1638 else if (n < min_jlong + 10000) | |
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1639 sprintf(buf, "min+" JLONG_FORMAT, n - min_jlong); |
0 | 1640 else if (n == max_jlong) |
1641 return "max"; | |
1642 else if (n > max_jlong - 10000) | |
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1643 sprintf(buf, "max-" JLONG_FORMAT, max_jlong - n); |
0 | 1644 else if ((str = longnamenear(max_juint, "maxuint", buf, n)) != NULL) |
1645 return str; | |
1646 else if ((str = longnamenear(max_jint, "maxint", buf, n)) != NULL) | |
1647 return str; | |
1648 else if ((str = longnamenear(min_jint, "minint", buf, n)) != NULL) | |
1649 return str; | |
1650 else | |
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1651 sprintf(buf, JLONG_FORMAT, n); |
0 | 1652 return buf; |
1653 } | |
1654 | |
1655 void TypeLong::dump2( Dict &d, uint depth, outputStream *st ) const { | |
1656 char buf[80], buf2[80]; | |
1657 if (_lo == min_jlong && _hi == max_jlong) | |
1658 st->print("long"); | |
1659 else if (is_con()) | |
1660 st->print("long:%s", longname(buf, get_con())); | |
1661 else if (_hi == max_jlong) | |
1662 st->print("long:>=%s", longname(buf, _lo)); | |
1663 else if (_lo == min_jlong) | |
1664 st->print("long:<=%s", longname(buf, _hi)); | |
1665 else | |
1666 st->print("long:%s..%s", longname(buf, _lo), longname(buf2, _hi)); | |
1667 | |
1668 if (_widen != 0 && this != TypeLong::LONG) | |
1669 st->print(":%.*s", _widen, "wwww"); | |
1670 } | |
1671 #endif | |
1672 | |
1673 //------------------------------singleton-------------------------------------- | |
1674 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
1675 // constants | |
1676 bool TypeLong::singleton(void) const { | |
1677 return _lo >= _hi; | |
1678 } | |
1679 | |
1680 bool TypeLong::empty(void) const { | |
1681 return _lo > _hi; | |
1682 } | |
1683 | |
1684 //============================================================================= | |
1685 // Convenience common pre-built types. | |
1686 const TypeTuple *TypeTuple::IFBOTH; // Return both arms of IF as reachable | |
1687 const TypeTuple *TypeTuple::IFFALSE; | |
1688 const TypeTuple *TypeTuple::IFTRUE; | |
1689 const TypeTuple *TypeTuple::IFNEITHER; | |
1690 const TypeTuple *TypeTuple::LOOPBODY; | |
1691 const TypeTuple *TypeTuple::MEMBAR; | |
1692 const TypeTuple *TypeTuple::STORECONDITIONAL; | |
1693 const TypeTuple *TypeTuple::START_I2C; | |
1694 const TypeTuple *TypeTuple::INT_PAIR; | |
1695 const TypeTuple *TypeTuple::LONG_PAIR; | |
12323 | 1696 const TypeTuple *TypeTuple::INT_CC_PAIR; |
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1697 const TypeTuple *TypeTuple::LONG_CC_PAIR; |
0 | 1698 |
1699 | |
1700 //------------------------------make------------------------------------------- | |
1701 // Make a TypeTuple from the range of a method signature | |
1702 const TypeTuple *TypeTuple::make_range(ciSignature* sig) { | |
1703 ciType* return_type = sig->return_type(); | |
1704 uint total_fields = TypeFunc::Parms + return_type->size(); | |
1705 const Type **field_array = fields(total_fields); | |
1706 switch (return_type->basic_type()) { | |
1707 case T_LONG: | |
1708 field_array[TypeFunc::Parms] = TypeLong::LONG; | |
1709 field_array[TypeFunc::Parms+1] = Type::HALF; | |
1710 break; | |
1711 case T_DOUBLE: | |
1712 field_array[TypeFunc::Parms] = Type::DOUBLE; | |
1713 field_array[TypeFunc::Parms+1] = Type::HALF; | |
1714 break; | |
1715 case T_OBJECT: | |
1716 case T_ARRAY: | |
1717 case T_BOOLEAN: | |
1718 case T_CHAR: | |
1719 case T_FLOAT: | |
1720 case T_BYTE: | |
1721 case T_SHORT: | |
1722 case T_INT: | |
1723 field_array[TypeFunc::Parms] = get_const_type(return_type); | |
1724 break; | |
1725 case T_VOID: | |
1726 break; | |
1727 default: | |
1728 ShouldNotReachHere(); | |
1729 } | |
1730 return (TypeTuple*)(new TypeTuple(total_fields,field_array))->hashcons(); | |
1731 } | |
1732 | |
1733 // Make a TypeTuple from the domain of a method signature | |
1734 const TypeTuple *TypeTuple::make_domain(ciInstanceKlass* recv, ciSignature* sig) { | |
1735 uint total_fields = TypeFunc::Parms + sig->size(); | |
1736 | |
1737 uint pos = TypeFunc::Parms; | |
1738 const Type **field_array; | |
1739 if (recv != NULL) { | |
1740 total_fields++; | |
1741 field_array = fields(total_fields); | |
1742 // Use get_const_type here because it respects UseUniqueSubclasses: | |
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1743 field_array[pos++] = get_const_type(recv)->join_speculative(TypePtr::NOTNULL); |
0 | 1744 } else { |
1745 field_array = fields(total_fields); | |
1746 } | |
1747 | |
1748 int i = 0; | |
1749 while (pos < total_fields) { | |
1750 ciType* type = sig->type_at(i); | |
1751 | |
1752 switch (type->basic_type()) { | |
1753 case T_LONG: | |
1754 field_array[pos++] = TypeLong::LONG; | |
1755 field_array[pos++] = Type::HALF; | |
1756 break; | |
1757 case T_DOUBLE: | |
1758 field_array[pos++] = Type::DOUBLE; | |
1759 field_array[pos++] = Type::HALF; | |
1760 break; | |
1761 case T_OBJECT: | |
1762 case T_ARRAY: | |
1763 case T_BOOLEAN: | |
1764 case T_CHAR: | |
1765 case T_FLOAT: | |
1766 case T_BYTE: | |
1767 case T_SHORT: | |
1768 case T_INT: | |
1769 field_array[pos++] = get_const_type(type); | |
1770 break; | |
1771 default: | |
1772 ShouldNotReachHere(); | |
1773 } | |
1774 i++; | |
1775 } | |
1776 return (TypeTuple*)(new TypeTuple(total_fields,field_array))->hashcons(); | |
1777 } | |
1778 | |
1779 const TypeTuple *TypeTuple::make( uint cnt, const Type **fields ) { | |
1780 return (TypeTuple*)(new TypeTuple(cnt,fields))->hashcons(); | |
1781 } | |
1782 | |
1783 //------------------------------fields----------------------------------------- | |
1784 // Subroutine call type with space allocated for argument types | |
1785 const Type **TypeTuple::fields( uint arg_cnt ) { | |
1786 const Type **flds = (const Type **)(Compile::current()->type_arena()->Amalloc_4((TypeFunc::Parms+arg_cnt)*sizeof(Type*) )); | |
1787 flds[TypeFunc::Control ] = Type::CONTROL; | |
1788 flds[TypeFunc::I_O ] = Type::ABIO; | |
1789 flds[TypeFunc::Memory ] = Type::MEMORY; | |
1790 flds[TypeFunc::FramePtr ] = TypeRawPtr::BOTTOM; | |
1791 flds[TypeFunc::ReturnAdr] = Type::RETURN_ADDRESS; | |
1792 | |
1793 return flds; | |
1794 } | |
1795 | |
1796 //------------------------------meet------------------------------------------- | |
1797 // Compute the MEET of two types. It returns a new Type object. | |
1798 const Type *TypeTuple::xmeet( const Type *t ) const { | |
1799 // Perform a fast test for common case; meeting the same types together. | |
1800 if( this == t ) return this; // Meeting same type-rep? | |
1801 | |
1802 // Current "this->_base" is Tuple | |
1803 switch (t->base()) { // switch on original type | |
1804 | |
1805 case Bottom: // Ye Olde Default | |
1806 return t; | |
1807 | |
1808 default: // All else is a mistake | |
1809 typerr(t); | |
1810 | |
1811 case Tuple: { // Meeting 2 signatures? | |
1812 const TypeTuple *x = t->is_tuple(); | |
1813 assert( _cnt == x->_cnt, "" ); | |
1814 const Type **fields = (const Type **)(Compile::current()->type_arena()->Amalloc_4( _cnt*sizeof(Type*) )); | |
1815 for( uint i=0; i<_cnt; i++ ) | |
1816 fields[i] = field_at(i)->xmeet( x->field_at(i) ); | |
1817 return TypeTuple::make(_cnt,fields); | |
1818 } | |
1819 case Top: | |
1820 break; | |
1821 } | |
1822 return this; // Return the double constant | |
1823 } | |
1824 | |
1825 //------------------------------xdual------------------------------------------ | |
1826 // Dual: compute field-by-field dual | |
1827 const Type *TypeTuple::xdual() const { | |
1828 const Type **fields = (const Type **)(Compile::current()->type_arena()->Amalloc_4( _cnt*sizeof(Type*) )); | |
1829 for( uint i=0; i<_cnt; i++ ) | |
1830 fields[i] = _fields[i]->dual(); | |
1831 return new TypeTuple(_cnt,fields); | |
1832 } | |
1833 | |
1834 //------------------------------eq--------------------------------------------- | |
1835 // Structural equality check for Type representations | |
1836 bool TypeTuple::eq( const Type *t ) const { | |
1837 const TypeTuple *s = (const TypeTuple *)t; | |
1838 if (_cnt != s->_cnt) return false; // Unequal field counts | |
1839 for (uint i = 0; i < _cnt; i++) | |
1840 if (field_at(i) != s->field_at(i)) // POINTER COMPARE! NO RECURSION! | |
1841 return false; // Missed | |
1842 return true; | |
1843 } | |
1844 | |
1845 //------------------------------hash------------------------------------------- | |
1846 // Type-specific hashing function. | |
1847 int TypeTuple::hash(void) const { | |
1848 intptr_t sum = _cnt; | |
1849 for( uint i=0; i<_cnt; i++ ) | |
1850 sum += (intptr_t)_fields[i]; // Hash on pointers directly | |
1851 return sum; | |
1852 } | |
1853 | |
1854 //------------------------------dump2------------------------------------------ | |
1855 // Dump signature Type | |
1856 #ifndef PRODUCT | |
1857 void TypeTuple::dump2( Dict &d, uint depth, outputStream *st ) const { | |
1858 st->print("{"); | |
1859 if( !depth || d[this] ) { // Check for recursive print | |
1860 st->print("...}"); | |
1861 return; | |
1862 } | |
1863 d.Insert((void*)this, (void*)this); // Stop recursion | |
1864 if( _cnt ) { | |
1865 uint i; | |
1866 for( i=0; i<_cnt-1; i++ ) { | |
1867 st->print("%d:", i); | |
1868 _fields[i]->dump2(d, depth-1, st); | |
1869 st->print(", "); | |
1870 } | |
1871 st->print("%d:", i); | |
1872 _fields[i]->dump2(d, depth-1, st); | |
1873 } | |
1874 st->print("}"); | |
1875 } | |
1876 #endif | |
1877 | |
1878 //------------------------------singleton-------------------------------------- | |
1879 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
1880 // constants (Ldi nodes). Singletons are integer, float or double constants | |
1881 // or a single symbol. | |
1882 bool TypeTuple::singleton(void) const { | |
1883 return false; // Never a singleton | |
1884 } | |
1885 | |
1886 bool TypeTuple::empty(void) const { | |
1887 for( uint i=0; i<_cnt; i++ ) { | |
1888 if (_fields[i]->empty()) return true; | |
1889 } | |
1890 return false; | |
1891 } | |
1892 | |
1893 //============================================================================= | |
1894 // Convenience common pre-built types. | |
1895 | |
1896 inline const TypeInt* normalize_array_size(const TypeInt* size) { | |
1897 // Certain normalizations keep us sane when comparing types. | |
1898 // We do not want arrayOop variables to differ only by the wideness | |
1899 // of their index types. Pick minimum wideness, since that is the | |
1900 // forced wideness of small ranges anyway. | |
1901 if (size->_widen != Type::WidenMin) | |
1902 return TypeInt::make(size->_lo, size->_hi, Type::WidenMin); | |
1903 else | |
1904 return size; | |
1905 } | |
1906 | |
1907 //------------------------------make------------------------------------------- | |
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1908 const TypeAry* TypeAry::make(const Type* elem, const TypeInt* size, bool stable) { |
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1909 if (UseCompressedOops && elem->isa_oopptr()) { |
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1910 elem = elem->make_narrowoop(); |
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1911 } |
0 | 1912 size = normalize_array_size(size); |
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1913 return (TypeAry*)(new TypeAry(elem,size,stable))->hashcons(); |
0 | 1914 } |
1915 | |
1916 //------------------------------meet------------------------------------------- | |
1917 // Compute the MEET of two types. It returns a new Type object. | |
1918 const Type *TypeAry::xmeet( const Type *t ) const { | |
1919 // Perform a fast test for common case; meeting the same types together. | |
1920 if( this == t ) return this; // Meeting same type-rep? | |
1921 | |
1922 // Current "this->_base" is Ary | |
1923 switch (t->base()) { // switch on original type | |
1924 | |
1925 case Bottom: // Ye Olde Default | |
1926 return t; | |
1927 | |
1928 default: // All else is a mistake | |
1929 typerr(t); | |
1930 | |
1931 case Array: { // Meeting 2 arrays? | |
1932 const TypeAry *a = t->is_ary(); | |
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1933 return TypeAry::make(_elem->meet_speculative(a->_elem), |
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1934 _size->xmeet(a->_size)->is_int(), |
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1935 _stable & a->_stable); |
0 | 1936 } |
1937 case Top: | |
1938 break; | |
1939 } | |
1940 return this; // Return the double constant | |
1941 } | |
1942 | |
1943 //------------------------------xdual------------------------------------------ | |
1944 // Dual: compute field-by-field dual | |
1945 const Type *TypeAry::xdual() const { | |
1946 const TypeInt* size_dual = _size->dual()->is_int(); | |
1947 size_dual = normalize_array_size(size_dual); | |
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1948 return new TypeAry(_elem->dual(), size_dual, !_stable); |
0 | 1949 } |
1950 | |
1951 //------------------------------eq--------------------------------------------- | |
1952 // Structural equality check for Type representations | |
1953 bool TypeAry::eq( const Type *t ) const { | |
1954 const TypeAry *a = (const TypeAry*)t; | |
1955 return _elem == a->_elem && | |
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1956 _stable == a->_stable && |
0 | 1957 _size == a->_size; |
1958 } | |
1959 | |
1960 //------------------------------hash------------------------------------------- | |
1961 // Type-specific hashing function. | |
1962 int TypeAry::hash(void) const { | |
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1963 return (intptr_t)_elem + (intptr_t)_size + (_stable ? 43 : 0); |
0 | 1964 } |
1965 | |
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1966 /** |
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1967 * Return same type without a speculative part in the element |
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1968 */ |
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1969 const Type* TypeAry::remove_speculative() const { |
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1970 return make(_elem->remove_speculative(), _size, _stable); |
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1971 } |
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1972 |
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1973 //----------------------interface_vs_oop--------------------------------------- |
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1974 #ifdef ASSERT |
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1975 bool TypeAry::interface_vs_oop(const Type *t) const { |
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1976 const TypeAry* t_ary = t->is_ary(); |
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1977 if (t_ary) { |
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1978 return _elem->interface_vs_oop(t_ary->_elem); |
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1979 } |
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1980 return false; |
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1981 } |
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1982 #endif |
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1983 |
0 | 1984 //------------------------------dump2------------------------------------------ |
1985 #ifndef PRODUCT | |
1986 void TypeAry::dump2( Dict &d, uint depth, outputStream *st ) const { | |
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1987 if (_stable) st->print("stable:"); |
0 | 1988 _elem->dump2(d, depth, st); |
1989 st->print("["); | |
1990 _size->dump2(d, depth, st); | |
1991 st->print("]"); | |
1992 } | |
1993 #endif | |
1994 | |
1995 //------------------------------singleton-------------------------------------- | |
1996 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
1997 // constants (Ldi nodes). Singletons are integer, float or double constants | |
1998 // or a single symbol. | |
1999 bool TypeAry::singleton(void) const { | |
2000 return false; // Never a singleton | |
2001 } | |
2002 | |
2003 bool TypeAry::empty(void) const { | |
2004 return _elem->empty() || _size->empty(); | |
2005 } | |
2006 | |
2007 //--------------------------ary_must_be_exact---------------------------------- | |
2008 bool TypeAry::ary_must_be_exact() const { | |
2009 if (!UseExactTypes) return false; | |
2010 // This logic looks at the element type of an array, and returns true | |
2011 // if the element type is either a primitive or a final instance class. | |
2012 // In such cases, an array built on this ary must have no subclasses. | |
2013 if (_elem == BOTTOM) return false; // general array not exact | |
2014 if (_elem == TOP ) return false; // inverted general array not exact | |
113
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2015 const TypeOopPtr* toop = NULL; |
221
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2016 if (UseCompressedOops && _elem->isa_narrowoop()) { |
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2017 toop = _elem->make_ptr()->isa_oopptr(); |
113
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2018 } else { |
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2019 toop = _elem->isa_oopptr(); |
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2020 } |
0 | 2021 if (!toop) return true; // a primitive type, like int |
2022 ciKlass* tklass = toop->klass(); | |
2023 if (tklass == NULL) return false; // unloaded class | |
2024 if (!tklass->is_loaded()) return false; // unloaded class | |
113
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2025 const TypeInstPtr* tinst; |
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2026 if (_elem->isa_narrowoop()) |
221
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2027 tinst = _elem->make_ptr()->isa_instptr(); |
113
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2028 else |
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2029 tinst = _elem->isa_instptr(); |
221
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2030 if (tinst) |
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2031 return tklass->as_instance_klass()->is_final(); |
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2032 const TypeAryPtr* tap; |
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2033 if (_elem->isa_narrowoop()) |
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2034 tap = _elem->make_ptr()->isa_aryptr(); |
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2035 else |
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2036 tap = _elem->isa_aryptr(); |
221
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2037 if (tap) |
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2038 return tap->ary()->ary_must_be_exact(); |
0 | 2039 return false; |
2040 } | |
2041 | |
6179
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2042 //==============================TypeVect======================================= |
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2043 // Convenience common pre-built types. |
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2044 const TypeVect *TypeVect::VECTS = NULL; // 32-bit vectors |
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2045 const TypeVect *TypeVect::VECTD = NULL; // 64-bit vectors |
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2046 const TypeVect *TypeVect::VECTX = NULL; // 128-bit vectors |
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2047 const TypeVect *TypeVect::VECTY = NULL; // 256-bit vectors |
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2048 |
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2049 //------------------------------make------------------------------------------- |
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2050 const TypeVect* TypeVect::make(const Type *elem, uint length) { |
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2051 BasicType elem_bt = elem->array_element_basic_type(); |
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2052 assert(is_java_primitive(elem_bt), "only primitive types in vector"); |
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2053 assert(length > 1 && is_power_of_2(length), "vector length is power of 2"); |
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2054 assert(Matcher::vector_size_supported(elem_bt, length), "length in range"); |
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2055 int size = length * type2aelembytes(elem_bt); |
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2056 switch (Matcher::vector_ideal_reg(size)) { |
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2057 case Op_VecS: |
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2058 return (TypeVect*)(new TypeVectS(elem, length))->hashcons(); |
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2059 case Op_VecD: |
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2060 case Op_RegD: |
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2061 return (TypeVect*)(new TypeVectD(elem, length))->hashcons(); |
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2062 case Op_VecX: |
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2063 return (TypeVect*)(new TypeVectX(elem, length))->hashcons(); |
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2064 case Op_VecY: |
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2065 return (TypeVect*)(new TypeVectY(elem, length))->hashcons(); |
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2066 } |
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2067 ShouldNotReachHere(); |
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2068 return NULL; |
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|
2069 } |
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2070 |
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2071 //------------------------------meet------------------------------------------- |
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2072 // Compute the MEET of two types. It returns a new Type object. |
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2073 const Type *TypeVect::xmeet( const Type *t ) const { |
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2074 // Perform a fast test for common case; meeting the same types together. |
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2075 if( this == t ) return this; // Meeting same type-rep? |
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2076 |
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2077 // Current "this->_base" is Vector |
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2078 switch (t->base()) { // switch on original type |
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2079 |
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2080 case Bottom: // Ye Olde Default |
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2081 return t; |
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|
2082 |
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2083 default: // All else is a mistake |
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|
2084 typerr(t); |
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|
2085 |
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2086 case VectorS: |
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2087 case VectorD: |
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2088 case VectorX: |
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2089 case VectorY: { // Meeting 2 vectors? |
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2090 const TypeVect* v = t->is_vect(); |
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2091 assert( base() == v->base(), ""); |
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2092 assert(length() == v->length(), ""); |
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2093 assert(element_basic_type() == v->element_basic_type(), ""); |
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2094 return TypeVect::make(_elem->xmeet(v->_elem), _length); |
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|
2095 } |
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|
2096 case Top: |
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|
2097 break; |
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|
2098 } |
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|
2099 return this; |
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|
2100 } |
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|
2101 |
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|
2102 //------------------------------xdual------------------------------------------ |
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|
2103 // Dual: compute field-by-field dual |
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|
2104 const Type *TypeVect::xdual() const { |
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|
2105 return new TypeVect(base(), _elem->dual(), _length); |
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|
2106 } |
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|
2107 |
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|
2108 //------------------------------eq--------------------------------------------- |
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|
2109 // Structural equality check for Type representations |
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|
2110 bool TypeVect::eq(const Type *t) const { |
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|
2111 const TypeVect *v = t->is_vect(); |
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2112 return (_elem == v->_elem) && (_length == v->_length); |
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2113 } |
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|
2114 |
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|
2115 //------------------------------hash------------------------------------------- |
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|
2116 // Type-specific hashing function. |
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2117 int TypeVect::hash(void) const { |
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2118 return (intptr_t)_elem + (intptr_t)_length; |
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2119 } |
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|
2120 |
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2121 //------------------------------singleton-------------------------------------- |
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2122 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple |
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2123 // constants (Ldi nodes). Vector is singleton if all elements are the same |
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2124 // constant value (when vector is created with Replicate code). |
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|
2125 bool TypeVect::singleton(void) const { |
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|
2126 // There is no Con node for vectors yet. |
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|
2127 // return _elem->singleton(); |
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|
2128 return false; |
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|
2129 } |
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|
2130 |
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2131 bool TypeVect::empty(void) const { |
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|
2132 return _elem->empty(); |
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|
2133 } |
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|
2134 |
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|
2135 //------------------------------dump2------------------------------------------ |
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|
2136 #ifndef PRODUCT |
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2137 void TypeVect::dump2(Dict &d, uint depth, outputStream *st) const { |
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|
2138 switch (base()) { |
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|
2139 case VectorS: |
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|
2140 st->print("vectors["); break; |
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|
2141 case VectorD: |
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|
2142 st->print("vectord["); break; |
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|
2143 case VectorX: |
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|
2144 st->print("vectorx["); break; |
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|
2145 case VectorY: |
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|
2146 st->print("vectory["); break; |
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2147 default: |
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2148 ShouldNotReachHere(); |
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2149 } |
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2150 st->print("%d]:{", _length); |
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2151 _elem->dump2(d, depth, st); |
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2152 st->print("}"); |
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2153 } |
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2154 #endif |
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2155 |
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2156 |
0 | 2157 //============================================================================= |
2158 // Convenience common pre-built types. | |
2159 const TypePtr *TypePtr::NULL_PTR; | |
2160 const TypePtr *TypePtr::NOTNULL; | |
2161 const TypePtr *TypePtr::BOTTOM; | |
2162 | |
2163 //------------------------------meet------------------------------------------- | |
2164 // Meet over the PTR enum | |
2165 const TypePtr::PTR TypePtr::ptr_meet[TypePtr::lastPTR][TypePtr::lastPTR] = { | |
2166 // TopPTR, AnyNull, Constant, Null, NotNull, BotPTR, | |
2167 { /* Top */ TopPTR, AnyNull, Constant, Null, NotNull, BotPTR,}, | |
2168 { /* AnyNull */ AnyNull, AnyNull, Constant, BotPTR, NotNull, BotPTR,}, | |
2169 { /* Constant*/ Constant, Constant, Constant, BotPTR, NotNull, BotPTR,}, | |
2170 { /* Null */ Null, BotPTR, BotPTR, Null, BotPTR, BotPTR,}, | |
2171 { /* NotNull */ NotNull, NotNull, NotNull, BotPTR, NotNull, BotPTR,}, | |
2172 { /* BotPTR */ BotPTR, BotPTR, BotPTR, BotPTR, BotPTR, BotPTR,} | |
2173 }; | |
2174 | |
2175 //------------------------------make------------------------------------------- | |
2176 const TypePtr *TypePtr::make( TYPES t, enum PTR ptr, int offset ) { | |
2177 return (TypePtr*)(new TypePtr(t,ptr,offset))->hashcons(); | |
2178 } | |
2179 | |
2180 //------------------------------cast_to_ptr_type------------------------------- | |
2181 const Type *TypePtr::cast_to_ptr_type(PTR ptr) const { | |
2182 assert(_base == AnyPtr, "subclass must override cast_to_ptr_type"); | |
2183 if( ptr == _ptr ) return this; | |
2184 return make(_base, ptr, _offset); | |
2185 } | |
2186 | |
2187 //------------------------------get_con---------------------------------------- | |
2188 intptr_t TypePtr::get_con() const { | |
2189 assert( _ptr == Null, "" ); | |
2190 return _offset; | |
2191 } | |
2192 | |
2193 //------------------------------meet------------------------------------------- | |
2194 // Compute the MEET of two types. It returns a new Type object. | |
2195 const Type *TypePtr::xmeet( const Type *t ) const { | |
2196 // Perform a fast test for common case; meeting the same types together. | |
2197 if( this == t ) return this; // Meeting same type-rep? | |
2198 | |
2199 // Current "this->_base" is AnyPtr | |
2200 switch (t->base()) { // switch on original type | |
2201 case Int: // Mixing ints & oops happens when javac | |
2202 case Long: // reuses local variables | |
2203 case FloatTop: | |
2204 case FloatCon: | |
2205 case FloatBot: | |
2206 case DoubleTop: | |
2207 case DoubleCon: | |
2208 case DoubleBot: | |
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2209 case NarrowOop: |
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2210 case NarrowKlass: |
0 | 2211 case Bottom: // Ye Olde Default |
2212 return Type::BOTTOM; | |
2213 case Top: | |
2214 return this; | |
2215 | |
2216 case AnyPtr: { // Meeting to AnyPtrs | |
2217 const TypePtr *tp = t->is_ptr(); | |
2218 return make( AnyPtr, meet_ptr(tp->ptr()), meet_offset(tp->offset()) ); | |
2219 } | |
2220 case RawPtr: // For these, flip the call around to cut down | |
2221 case OopPtr: | |
2222 case InstPtr: // on the cases I have to handle. | |
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2223 case AryPtr: |
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2224 case MetadataPtr: |
0 | 2225 case KlassPtr: |
2226 return t->xmeet(this); // Call in reverse direction | |
2227 default: // All else is a mistake | |
2228 typerr(t); | |
2229 | |
2230 } | |
2231 return this; | |
2232 } | |
2233 | |
2234 //------------------------------meet_offset------------------------------------ | |
2235 int TypePtr::meet_offset( int offset ) const { | |
2236 // Either is 'TOP' offset? Return the other offset! | |
2237 if( _offset == OffsetTop ) return offset; | |
2238 if( offset == OffsetTop ) return _offset; | |
2239 // If either is different, return 'BOTTOM' offset | |
2240 if( _offset != offset ) return OffsetBot; | |
2241 return _offset; | |
2242 } | |
2243 | |
2244 //------------------------------dual_offset------------------------------------ | |
2245 int TypePtr::dual_offset( ) const { | |
2246 if( _offset == OffsetTop ) return OffsetBot;// Map 'TOP' into 'BOTTOM' | |
2247 if( _offset == OffsetBot ) return OffsetTop;// Map 'BOTTOM' into 'TOP' | |
2248 return _offset; // Map everything else into self | |
2249 } | |
2250 | |
2251 //------------------------------xdual------------------------------------------ | |
2252 // Dual: compute field-by-field dual | |
2253 const TypePtr::PTR TypePtr::ptr_dual[TypePtr::lastPTR] = { | |
2254 BotPTR, NotNull, Constant, Null, AnyNull, TopPTR | |
2255 }; | |
2256 const Type *TypePtr::xdual() const { | |
2257 return new TypePtr( AnyPtr, dual_ptr(), dual_offset() ); | |
2258 } | |
2259 | |
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2260 //------------------------------xadd_offset------------------------------------ |
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2261 int TypePtr::xadd_offset( intptr_t offset ) const { |
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2262 // Adding to 'TOP' offset? Return 'TOP'! |
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2263 if( _offset == OffsetTop || offset == OffsetTop ) return OffsetTop; |
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2264 // Adding to 'BOTTOM' offset? Return 'BOTTOM'! |
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2265 if( _offset == OffsetBot || offset == OffsetBot ) return OffsetBot; |
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2266 // Addition overflows or "accidentally" equals to OffsetTop? Return 'BOTTOM'! |
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2267 offset += (intptr_t)_offset; |
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2268 if (offset != (int)offset || offset == OffsetTop) return OffsetBot; |
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2269 |
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2270 // assert( _offset >= 0 && _offset+offset >= 0, "" ); |
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2271 // It is possible to construct a negative offset during PhaseCCP |
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2272 |
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2273 return (int)offset; // Sum valid offsets |
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2274 } |
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2275 |
0 | 2276 //------------------------------add_offset------------------------------------- |
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2277 const TypePtr *TypePtr::add_offset( intptr_t offset ) const { |
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2278 return make( AnyPtr, _ptr, xadd_offset(offset) ); |
0 | 2279 } |
2280 | |
2281 //------------------------------eq--------------------------------------------- | |
2282 // Structural equality check for Type representations | |
2283 bool TypePtr::eq( const Type *t ) const { | |
2284 const TypePtr *a = (const TypePtr*)t; | |
2285 return _ptr == a->ptr() && _offset == a->offset(); | |
2286 } | |
2287 | |
2288 //------------------------------hash------------------------------------------- | |
2289 // Type-specific hashing function. | |
2290 int TypePtr::hash(void) const { | |
2291 return _ptr + _offset; | |
2292 } | |
2293 | |
2294 //------------------------------dump2------------------------------------------ | |
2295 const char *const TypePtr::ptr_msg[TypePtr::lastPTR] = { | |
2296 "TopPTR","AnyNull","Constant","NULL","NotNull","BotPTR" | |
2297 }; | |
2298 | |
2299 #ifndef PRODUCT | |
2300 void TypePtr::dump2( Dict &d, uint depth, outputStream *st ) const { | |
2301 if( _ptr == Null ) st->print("NULL"); | |
2302 else st->print("%s *", ptr_msg[_ptr]); | |
2303 if( _offset == OffsetTop ) st->print("+top"); | |
2304 else if( _offset == OffsetBot ) st->print("+bot"); | |
2305 else if( _offset ) st->print("+%d", _offset); | |
2306 } | |
2307 #endif | |
2308 | |
2309 //------------------------------singleton-------------------------------------- | |
2310 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
2311 // constants | |
2312 bool TypePtr::singleton(void) const { | |
2313 // TopPTR, Null, AnyNull, Constant are all singletons | |
2314 return (_offset != OffsetBot) && !below_centerline(_ptr); | |
2315 } | |
2316 | |
2317 bool TypePtr::empty(void) const { | |
2318 return (_offset == OffsetTop) || above_centerline(_ptr); | |
2319 } | |
2320 | |
2321 //============================================================================= | |
2322 // Convenience common pre-built types. | |
2323 const TypeRawPtr *TypeRawPtr::BOTTOM; | |
2324 const TypeRawPtr *TypeRawPtr::NOTNULL; | |
2325 | |
2326 //------------------------------make------------------------------------------- | |
2327 const TypeRawPtr *TypeRawPtr::make( enum PTR ptr ) { | |
2328 assert( ptr != Constant, "what is the constant?" ); | |
2329 assert( ptr != Null, "Use TypePtr for NULL" ); | |
2330 return (TypeRawPtr*)(new TypeRawPtr(ptr,0))->hashcons(); | |
2331 } | |
2332 | |
2333 const TypeRawPtr *TypeRawPtr::make( address bits ) { | |
2334 assert( bits, "Use TypePtr for NULL" ); | |
2335 return (TypeRawPtr*)(new TypeRawPtr(Constant,bits))->hashcons(); | |
2336 } | |
2337 | |
2338 //------------------------------cast_to_ptr_type------------------------------- | |
2339 const Type *TypeRawPtr::cast_to_ptr_type(PTR ptr) const { | |
2340 assert( ptr != Constant, "what is the constant?" ); | |
2341 assert( ptr != Null, "Use TypePtr for NULL" ); | |
2342 assert( _bits==0, "Why cast a constant address?"); | |
2343 if( ptr == _ptr ) return this; | |
2344 return make(ptr); | |
2345 } | |
2346 | |
2347 //------------------------------get_con---------------------------------------- | |
2348 intptr_t TypeRawPtr::get_con() const { | |
2349 assert( _ptr == Null || _ptr == Constant, "" ); | |
2350 return (intptr_t)_bits; | |
2351 } | |
2352 | |
2353 //------------------------------meet------------------------------------------- | |
2354 // Compute the MEET of two types. It returns a new Type object. | |
2355 const Type *TypeRawPtr::xmeet( const Type *t ) const { | |
2356 // Perform a fast test for common case; meeting the same types together. | |
2357 if( this == t ) return this; // Meeting same type-rep? | |
2358 | |
2359 // Current "this->_base" is RawPtr | |
2360 switch( t->base() ) { // switch on original type | |
2361 case Bottom: // Ye Olde Default | |
2362 return t; | |
2363 case Top: | |
2364 return this; | |
2365 case AnyPtr: // Meeting to AnyPtrs | |
2366 break; | |
2367 case RawPtr: { // might be top, bot, any/not or constant | |
2368 enum PTR tptr = t->is_ptr()->ptr(); | |
2369 enum PTR ptr = meet_ptr( tptr ); | |
2370 if( ptr == Constant ) { // Cannot be equal constants, so... | |
2371 if( tptr == Constant && _ptr != Constant) return t; | |
2372 if( _ptr == Constant && tptr != Constant) return this; | |
2373 ptr = NotNull; // Fall down in lattice | |
2374 } | |
2375 return make( ptr ); | |
2376 } | |
2377 | |
2378 case OopPtr: | |
2379 case InstPtr: | |
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2380 case AryPtr: |
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2381 case MetadataPtr: |
0 | 2382 case KlassPtr: |
2383 return TypePtr::BOTTOM; // Oop meet raw is not well defined | |
2384 default: // All else is a mistake | |
2385 typerr(t); | |
2386 } | |
2387 | |
2388 // Found an AnyPtr type vs self-RawPtr type | |
2389 const TypePtr *tp = t->is_ptr(); | |
2390 switch (tp->ptr()) { | |
2391 case TypePtr::TopPTR: return this; | |
2392 case TypePtr::BotPTR: return t; | |
2393 case TypePtr::Null: | |
2394 if( _ptr == TypePtr::TopPTR ) return t; | |
2395 return TypeRawPtr::BOTTOM; | |
2396 case TypePtr::NotNull: return TypePtr::make( AnyPtr, meet_ptr(TypePtr::NotNull), tp->meet_offset(0) ); | |
2397 case TypePtr::AnyNull: | |
2398 if( _ptr == TypePtr::Constant) return this; | |
2399 return make( meet_ptr(TypePtr::AnyNull) ); | |
2400 default: ShouldNotReachHere(); | |
2401 } | |
2402 return this; | |
2403 } | |
2404 | |
2405 //------------------------------xdual------------------------------------------ | |
2406 // Dual: compute field-by-field dual | |
2407 const Type *TypeRawPtr::xdual() const { | |
2408 return new TypeRawPtr( dual_ptr(), _bits ); | |
2409 } | |
2410 | |
2411 //------------------------------add_offset------------------------------------- | |
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2412 const TypePtr *TypeRawPtr::add_offset( intptr_t offset ) const { |
0 | 2413 if( offset == OffsetTop ) return BOTTOM; // Undefined offset-> undefined pointer |
2414 if( offset == OffsetBot ) return BOTTOM; // Unknown offset-> unknown pointer | |
2415 if( offset == 0 ) return this; // No change | |
2416 switch (_ptr) { | |
2417 case TypePtr::TopPTR: | |
2418 case TypePtr::BotPTR: | |
2419 case TypePtr::NotNull: | |
2420 return this; | |
2421 case TypePtr::Null: | |
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2422 case TypePtr::Constant: { |
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2423 address bits = _bits+offset; |
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2424 if ( bits == 0 ) return TypePtr::NULL_PTR; |
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2425 return make( bits ); |
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2426 } |
0 | 2427 default: ShouldNotReachHere(); |
2428 } | |
2429 return NULL; // Lint noise | |
2430 } | |
2431 | |
2432 //------------------------------eq--------------------------------------------- | |
2433 // Structural equality check for Type representations | |
2434 bool TypeRawPtr::eq( const Type *t ) const { | |
2435 const TypeRawPtr *a = (const TypeRawPtr*)t; | |
2436 return _bits == a->_bits && TypePtr::eq(t); | |
2437 } | |
2438 | |
2439 //------------------------------hash------------------------------------------- | |
2440 // Type-specific hashing function. | |
2441 int TypeRawPtr::hash(void) const { | |
2442 return (intptr_t)_bits + TypePtr::hash(); | |
2443 } | |
2444 | |
2445 //------------------------------dump2------------------------------------------ | |
2446 #ifndef PRODUCT | |
2447 void TypeRawPtr::dump2( Dict &d, uint depth, outputStream *st ) const { | |
2448 if( _ptr == Constant ) | |
2449 st->print(INTPTR_FORMAT, _bits); | |
2450 else | |
2451 st->print("rawptr:%s", ptr_msg[_ptr]); | |
2452 } | |
2453 #endif | |
2454 | |
2455 //============================================================================= | |
2456 // Convenience common pre-built type. | |
2457 const TypeOopPtr *TypeOopPtr::BOTTOM; | |
2458 | |
163 | 2459 //------------------------------TypeOopPtr------------------------------------- |
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2460 TypeOopPtr::TypeOopPtr(TYPES t, PTR ptr, ciKlass* k, bool xk, ciObject* o, int offset, int instance_id, const TypeOopPtr* speculative, int inline_depth) |
163 | 2461 : TypePtr(t, ptr, offset), |
2462 _const_oop(o), _klass(k), | |
2463 _klass_is_exact(xk), | |
2464 _is_ptr_to_narrowoop(false), | |
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2465 _is_ptr_to_narrowklass(false), |
10278 | 2466 _is_ptr_to_boxed_value(false), |
12966 | 2467 _instance_id(instance_id), |
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2468 _speculative(speculative), |
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2469 _inline_depth(inline_depth){ |
10278 | 2470 if (Compile::current()->eliminate_boxing() && (t == InstPtr) && |
2471 (offset > 0) && xk && (k != 0) && k->is_instance_klass()) { | |
2472 _is_ptr_to_boxed_value = k->as_instance_klass()->is_boxed_value_offset(offset); | |
2473 } | |
163 | 2474 #ifdef _LP64 |
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2475 if (_offset != 0) { |
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2476 if (_offset == oopDesc::klass_offset_in_bytes()) { |
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2477 _is_ptr_to_narrowklass = UseCompressedClassPointers; |
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2478 } else if (klass() == NULL) { |
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2479 // Array with unknown body type |
163 | 2480 assert(this->isa_aryptr(), "only arrays without klass"); |
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2481 _is_ptr_to_narrowoop = UseCompressedOops; |
163 | 2482 } else if (this->isa_aryptr()) { |
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2483 _is_ptr_to_narrowoop = (UseCompressedOops && klass()->is_obj_array_klass() && |
163 | 2484 _offset != arrayOopDesc::length_offset_in_bytes()); |
2485 } else if (klass()->is_instance_klass()) { | |
2486 ciInstanceKlass* ik = klass()->as_instance_klass(); | |
2487 ciField* field = NULL; | |
2488 if (this->isa_klassptr()) { | |
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2489 // Perm objects don't use compressed references |
163 | 2490 } else if (_offset == OffsetBot || _offset == OffsetTop) { |
2491 // unsafe access | |
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2492 _is_ptr_to_narrowoop = UseCompressedOops; |
163 | 2493 } else { // exclude unsafe ops |
2494 assert(this->isa_instptr(), "must be an instance ptr."); | |
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2495 |
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2496 if (klass() == ciEnv::current()->Class_klass() && |
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2497 (_offset == java_lang_Class::klass_offset_in_bytes() || |
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2498 _offset == java_lang_Class::array_klass_offset_in_bytes())) { |
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2499 // Special hidden fields from the Class. |
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2500 assert(this->isa_instptr(), "must be an instance ptr."); |
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2501 _is_ptr_to_narrowoop = false; |
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2502 } else if (klass() == ciEnv::current()->Class_klass() && |
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2503 _offset >= InstanceMirrorKlass::offset_of_static_fields()) { |
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2504 // Static fields |
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2505 assert(o != NULL, "must be constant"); |
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2506 ciInstanceKlass* k = o->as_instance()->java_lang_Class_klass()->as_instance_klass(); |
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2507 ciField* field = k->get_field_by_offset(_offset, true); |
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2508 assert(field != NULL, "missing field"); |
163 | 2509 BasicType basic_elem_type = field->layout_type(); |
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2510 _is_ptr_to_narrowoop = UseCompressedOops && (basic_elem_type == T_OBJECT || |
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2511 basic_elem_type == T_ARRAY); |
163 | 2512 } else { |
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2513 // Instance fields which contains a compressed oop references. |
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2514 field = ik->get_field_by_offset(_offset, false); |
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2515 if (field != NULL) { |
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2516 BasicType basic_elem_type = field->layout_type(); |
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2517 _is_ptr_to_narrowoop = UseCompressedOops && (basic_elem_type == T_OBJECT || |
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2518 basic_elem_type == T_ARRAY); |
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2519 } else if (klass()->equals(ciEnv::current()->Object_klass())) { |
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2520 // Compile::find_alias_type() cast exactness on all types to verify |
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2521 // that it does not affect alias type. |
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2522 _is_ptr_to_narrowoop = UseCompressedOops; |
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2523 } else { |
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2524 // Type for the copy start in LibraryCallKit::inline_native_clone(). |
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2525 _is_ptr_to_narrowoop = UseCompressedOops; |
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2526 } |
163 | 2527 } |
2528 } | |
2529 } | |
2530 } | |
2531 #endif | |
2532 } | |
2533 | |
0 | 2534 //------------------------------make------------------------------------------- |
2535 const TypeOopPtr *TypeOopPtr::make(PTR ptr, | |
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2536 int offset, int instance_id, const TypeOopPtr* speculative, int inline_depth) { |
0 | 2537 assert(ptr != Constant, "no constant generic pointers"); |
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2538 ciKlass* k = Compile::current()->env()->Object_klass(); |
0 | 2539 bool xk = false; |
2540 ciObject* o = NULL; | |
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2541 return (TypeOopPtr*)(new TypeOopPtr(OopPtr, ptr, k, xk, o, offset, instance_id, speculative, inline_depth))->hashcons(); |
0 | 2542 } |
2543 | |
2544 | |
2545 //------------------------------cast_to_ptr_type------------------------------- | |
2546 const Type *TypeOopPtr::cast_to_ptr_type(PTR ptr) const { | |
2547 assert(_base == OopPtr, "subclass must override cast_to_ptr_type"); | |
2548 if( ptr == _ptr ) return this; | |
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2549 return make(ptr, _offset, _instance_id, _speculative, _inline_depth); |
0 | 2550 } |
2551 | |
247 | 2552 //-----------------------------cast_to_instance_id---------------------------- |
223 | 2553 const TypeOopPtr *TypeOopPtr::cast_to_instance_id(int instance_id) const { |
0 | 2554 // There are no instances of a general oop. |
2555 // Return self unchanged. | |
2556 return this; | |
2557 } | |
2558 | |
2559 //-----------------------------cast_to_exactness------------------------------- | |
2560 const Type *TypeOopPtr::cast_to_exactness(bool klass_is_exact) const { | |
2561 // There is no such thing as an exact general oop. | |
2562 // Return self unchanged. | |
2563 return this; | |
2564 } | |
2565 | |
2566 | |
2567 //------------------------------as_klass_type---------------------------------- | |
2568 // Return the klass type corresponding to this instance or array type. | |
2569 // It is the type that is loaded from an object of this type. | |
2570 const TypeKlassPtr* TypeOopPtr::as_klass_type() const { | |
2571 ciKlass* k = klass(); | |
2572 bool xk = klass_is_exact(); | |
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2573 if (k == NULL) |
0 | 2574 return TypeKlassPtr::OBJECT; |
2575 else | |
2576 return TypeKlassPtr::make(xk? Constant: NotNull, k, 0); | |
2577 } | |
2578 | |
12966 | 2579 const Type *TypeOopPtr::xmeet(const Type *t) const { |
2580 const Type* res = xmeet_helper(t); | |
2581 if (res->isa_oopptr() == NULL) { | |
2582 return res; | |
2583 } | |
2584 | |
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2585 const TypeOopPtr* res_oopptr = res->is_oopptr(); |
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2586 if (res_oopptr->speculative() != NULL) { |
12966 | 2587 // type->speculative() == NULL means that speculation is no better |
2588 // than type, i.e. type->speculative() == type. So there are 2 | |
2589 // ways to represent the fact that we have no useful speculative | |
2590 // data and we should use a single one to be able to test for | |
2591 // equality between types. Check whether type->speculative() == | |
2592 // type and set speculative to NULL if it is the case. | |
2593 if (res_oopptr->remove_speculative() == res_oopptr->speculative()) { | |
2594 return res_oopptr->remove_speculative(); | |
2595 } | |
2596 } | |
2597 | |
2598 return res; | |
2599 } | |
0 | 2600 |
2601 //------------------------------meet------------------------------------------- | |
2602 // Compute the MEET of two types. It returns a new Type object. | |
12966 | 2603 const Type *TypeOopPtr::xmeet_helper(const Type *t) const { |
0 | 2604 // Perform a fast test for common case; meeting the same types together. |
2605 if( this == t ) return this; // Meeting same type-rep? | |
2606 | |
2607 // Current "this->_base" is OopPtr | |
2608 switch (t->base()) { // switch on original type | |
2609 | |
2610 case Int: // Mixing ints & oops happens when javac | |
2611 case Long: // reuses local variables | |
2612 case FloatTop: | |
2613 case FloatCon: | |
2614 case FloatBot: | |
2615 case DoubleTop: | |
2616 case DoubleCon: | |
2617 case DoubleBot: | |
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2618 case NarrowOop: |
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2619 case NarrowKlass: |
0 | 2620 case Bottom: // Ye Olde Default |
2621 return Type::BOTTOM; | |
2622 case Top: | |
2623 return this; | |
2624 | |
2625 default: // All else is a mistake | |
2626 typerr(t); | |
2627 | |
2628 case RawPtr: | |
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2629 case MetadataPtr: |
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2630 case KlassPtr: |
0 | 2631 return TypePtr::BOTTOM; // Oop meet raw is not well defined |
2632 | |
2633 case AnyPtr: { | |
2634 // Found an AnyPtr type vs self-OopPtr type | |
2635 const TypePtr *tp = t->is_ptr(); | |
2636 int offset = meet_offset(tp->offset()); | |
2637 PTR ptr = meet_ptr(tp->ptr()); | |
2638 switch (tp->ptr()) { | |
2639 case Null: | |
2640 if (ptr == Null) return TypePtr::make(AnyPtr, ptr, offset); | |
2641 // else fall through: | |
2642 case TopPTR: | |
992 | 2643 case AnyNull: { |
2644 int instance_id = meet_instance_id(InstanceTop); | |
12966 | 2645 const TypeOopPtr* speculative = _speculative; |
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2646 return make(ptr, offset, instance_id, speculative, _inline_depth); |
992 | 2647 } |
0 | 2648 case BotPTR: |
2649 case NotNull: | |
2650 return TypePtr::make(AnyPtr, ptr, offset); | |
2651 default: typerr(t); | |
2652 } | |
2653 } | |
2654 | |
2655 case OopPtr: { // Meeting to other OopPtrs | |
2656 const TypeOopPtr *tp = t->is_oopptr(); | |
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2657 int instance_id = meet_instance_id(tp->instance_id()); |
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2658 const TypeOopPtr* speculative = xmeet_speculative(tp); |
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2659 int depth = meet_inline_depth(tp->inline_depth()); |
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2660 return make(meet_ptr(tp->ptr()), meet_offset(tp->offset()), instance_id, speculative, depth); |
0 | 2661 } |
2662 | |
2663 case InstPtr: // For these, flip the call around to cut down | |
2664 case AryPtr: | |
2665 return t->xmeet(this); // Call in reverse direction | |
2666 | |
2667 } // End of switch | |
2668 return this; // Return the double constant | |
2669 } | |
2670 | |
2671 | |
2672 //------------------------------xdual------------------------------------------ | |
2673 // Dual of a pure heap pointer. No relevant klass or oop information. | |
2674 const Type *TypeOopPtr::xdual() const { | |
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2675 assert(klass() == Compile::current()->env()->Object_klass(), "no klasses here"); |
0 | 2676 assert(const_oop() == NULL, "no constants here"); |
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2677 return new TypeOopPtr(_base, dual_ptr(), klass(), klass_is_exact(), const_oop(), dual_offset(), dual_instance_id(), dual_speculative(), dual_inline_depth()); |
0 | 2678 } |
2679 | |
2680 //--------------------------make_from_klass_common----------------------------- | |
2681 // Computes the element-type given a klass. | |
2682 const TypeOopPtr* TypeOopPtr::make_from_klass_common(ciKlass *klass, bool klass_change, bool try_for_exact) { | |
2683 if (klass->is_instance_klass()) { | |
2684 Compile* C = Compile::current(); | |
2685 Dependencies* deps = C->dependencies(); | |
2686 assert((deps != NULL) == (C->method() != NULL && C->method()->code_size() > 0), "sanity"); | |
2687 // Element is an instance | |
2688 bool klass_is_exact = false; | |
2689 if (klass->is_loaded()) { | |
2690 // Try to set klass_is_exact. | |
2691 ciInstanceKlass* ik = klass->as_instance_klass(); | |
2692 klass_is_exact = ik->is_final(); | |
2693 if (!klass_is_exact && klass_change | |
2694 && deps != NULL && UseUniqueSubclasses) { | |
2695 ciInstanceKlass* sub = ik->unique_concrete_subklass(); | |
2696 if (sub != NULL) { | |
2697 deps->assert_abstract_with_unique_concrete_subtype(ik, sub); | |
2698 klass = ik = sub; | |
2699 klass_is_exact = sub->is_final(); | |
2700 } | |
2701 } | |
2702 if (!klass_is_exact && try_for_exact | |
2703 && deps != NULL && UseExactTypes) { | |
2704 if (!ik->is_interface() && !ik->has_subklass()) { | |
2705 // Add a dependence; if concrete subclass added we need to recompile | |
2706 deps->assert_leaf_type(ik); | |
2707 klass_is_exact = true; | |
2708 } | |
2709 } | |
2710 } | |
2711 return TypeInstPtr::make(TypePtr::BotPTR, klass, klass_is_exact, NULL, 0); | |
2712 } else if (klass->is_obj_array_klass()) { | |
2713 // Element is an object array. Recursively call ourself. | |
2714 const TypeOopPtr *etype = TypeOopPtr::make_from_klass_common(klass->as_obj_array_klass()->element_klass(), false, try_for_exact); | |
2715 bool xk = etype->klass_is_exact(); | |
2716 const TypeAry* arr0 = TypeAry::make(etype, TypeInt::POS); | |
2717 // We used to pass NotNull in here, asserting that the sub-arrays | |
2718 // are all not-null. This is not true in generally, as code can | |
2719 // slam NULLs down in the subarrays. | |
2720 const TypeAryPtr* arr = TypeAryPtr::make(TypePtr::BotPTR, arr0, klass, xk, 0); | |
2721 return arr; | |
2722 } else if (klass->is_type_array_klass()) { | |
2723 // Element is an typeArray | |
2724 const Type* etype = get_const_basic_type(klass->as_type_array_klass()->element_type()); | |
2725 const TypeAry* arr0 = TypeAry::make(etype, TypeInt::POS); | |
2726 // We used to pass NotNull in here, asserting that the array pointer | |
2727 // is not-null. That was not true in general. | |
2728 const TypeAryPtr* arr = TypeAryPtr::make(TypePtr::BotPTR, arr0, klass, true, 0); | |
2729 return arr; | |
2730 } else { | |
2731 ShouldNotReachHere(); | |
2732 return NULL; | |
2733 } | |
2734 } | |
2735 | |
2736 //------------------------------make_from_constant----------------------------- | |
2737 // Make a java pointer from an oop constant | |
10278 | 2738 const TypeOopPtr* TypeOopPtr::make_from_constant(ciObject* o, |
2739 bool require_constant, | |
2740 bool is_autobox_cache) { | |
2741 assert(!o->is_null_object(), "null object not yet handled here."); | |
2742 ciKlass* klass = o->klass(); | |
2743 if (klass->is_instance_klass()) { | |
2744 // Element is an instance | |
2745 if (require_constant) { | |
2746 if (!o->can_be_constant()) return NULL; | |
2747 } else if (!o->should_be_constant()) { | |
2748 return TypeInstPtr::make(TypePtr::NotNull, klass, true, NULL, 0); | |
2749 } | |
2750 return TypeInstPtr::make(o); | |
2751 } else if (klass->is_obj_array_klass()) { | |
2752 // Element is an object array. Recursively call ourself. | |
2753 const TypeOopPtr *etype = | |
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2754 TypeOopPtr::make_from_klass_raw(klass->as_obj_array_klass()->element_klass()); |
10278 | 2755 if (is_autobox_cache) { |
2756 // The pointers in the autobox arrays are always non-null. | |
2757 etype = etype->cast_to_ptr_type(TypePtr::NotNull)->is_oopptr(); | |
2758 } | |
2759 const TypeAry* arr0 = TypeAry::make(etype, TypeInt::make(o->as_array()->length())); | |
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 if (require_constant) { | |
2764 if (!o->can_be_constant()) return NULL; | |
2765 } else if (!o->should_be_constant()) { | |
2766 return TypeAryPtr::make(TypePtr::NotNull, arr0, klass, true, 0); | |
2767 } | |
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2768 const TypeAryPtr* arr = TypeAryPtr::make(TypePtr::Constant, o, arr0, klass, true, 0, InstanceBot, NULL, InlineDepthBottom, is_autobox_cache); |
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2769 return arr; |
10278 | 2770 } else if (klass->is_type_array_klass()) { |
2771 // Element is an typeArray | |
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2772 const Type* etype = |
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2773 (Type*)get_const_basic_type(klass->as_type_array_klass()->element_type()); |
10278 | 2774 const TypeAry* arr0 = TypeAry::make(etype, TypeInt::make(o->as_array()->length())); |
2775 // We used to pass NotNull in here, asserting that the array pointer | |
2776 // is not-null. That was not true in general. | |
2777 if (require_constant) { | |
2778 if (!o->can_be_constant()) return NULL; | |
2779 } else if (!o->should_be_constant()) { | |
2780 return TypeAryPtr::make(TypePtr::NotNull, arr0, klass, true, 0); | |
2781 } | |
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2782 const TypeAryPtr* arr = TypeAryPtr::make(TypePtr::Constant, o, arr0, klass, true, 0); |
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2783 return arr; |
0 | 2784 } |
2785 | |
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2786 fatal("unhandled object type"); |
0 | 2787 return NULL; |
2788 } | |
2789 | |
2790 //------------------------------get_con---------------------------------------- | |
2791 intptr_t TypeOopPtr::get_con() const { | |
2792 assert( _ptr == Null || _ptr == Constant, "" ); | |
2793 assert( _offset >= 0, "" ); | |
2794 | |
2795 if (_offset != 0) { | |
2796 // After being ported to the compiler interface, the compiler no longer | |
2797 // directly manipulates the addresses of oops. Rather, it only has a pointer | |
2798 // to a handle at compile time. This handle is embedded in the generated | |
2799 // code and dereferenced at the time the nmethod is made. Until that time, | |
2800 // it is not reasonable to do arithmetic with the addresses of oops (we don't | |
2801 // have access to the addresses!). This does not seem to currently happen, | |
605 | 2802 // but this assertion here is to help prevent its occurence. |
0 | 2803 tty->print_cr("Found oop constant with non-zero offset"); |
2804 ShouldNotReachHere(); | |
2805 } | |
2806 | |
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2807 return (intptr_t)const_oop()->constant_encoding(); |
0 | 2808 } |
2809 | |
2810 | |
2811 //-----------------------------filter------------------------------------------ | |
2812 // Do not allow interface-vs.-noninterface joins to collapse to top. | |
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2813 const Type *TypeOopPtr::filter_helper(const Type *kills, bool include_speculative) const { |
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2814 |
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2815 const Type* ft = join_helper(kills, include_speculative); |
0 | 2816 const TypeInstPtr* ftip = ft->isa_instptr(); |
2817 const TypeInstPtr* ktip = kills->isa_instptr(); | |
2818 | |
2819 if (ft->empty()) { | |
2820 // Check for evil case of 'this' being a class and 'kills' expecting an | |
2821 // interface. This can happen because the bytecodes do not contain | |
2822 // enough type info to distinguish a Java-level interface variable | |
2823 // from a Java-level object variable. If we meet 2 classes which | |
2824 // both implement interface I, but their meet is at 'j/l/O' which | |
2825 // doesn't implement I, we have no way to tell if the result should | |
2826 // be 'I' or 'j/l/O'. Thus we'll pick 'j/l/O'. If this then flows | |
2827 // into a Phi which "knows" it's an Interface type we'll have to | |
2828 // uplift the type. | |
2829 if (!empty() && ktip != NULL && ktip->is_loaded() && ktip->klass()->is_interface()) | |
2830 return kills; // Uplift to interface | |
2831 | |
2832 return Type::TOP; // Canonical empty value | |
2833 } | |
2834 | |
2835 // If we have an interface-typed Phi or cast and we narrow to a class type, | |
2836 // the join should report back the class. However, if we have a J/L/Object | |
2837 // class-typed Phi and an interface flows in, it's possible that the meet & | |
2838 // join report an interface back out. This isn't possible but happens | |
2839 // because the type system doesn't interact well with interfaces. | |
2840 if (ftip != NULL && ktip != NULL && | |
2841 ftip->is_loaded() && ftip->klass()->is_interface() && | |
2842 ktip->is_loaded() && !ktip->klass()->is_interface()) { | |
2843 // Happens in a CTW of rt.jar, 320-341, no extra flags | |
1335
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2844 assert(!ftip->klass_is_exact(), "interface could not be exact"); |
0 | 2845 return ktip->cast_to_ptr_type(ftip->ptr()); |
2846 } | |
2847 | |
2848 return ft; | |
2849 } | |
2850 | |
2851 //------------------------------eq--------------------------------------------- | |
2852 // Structural equality check for Type representations | |
2853 bool TypeOopPtr::eq( const Type *t ) const { | |
2854 const TypeOopPtr *a = (const TypeOopPtr*)t; | |
2855 if (_klass_is_exact != a->_klass_is_exact || | |
12966 | 2856 _instance_id != a->_instance_id || |
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2857 !eq_speculative(a) || |
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2858 _inline_depth != a->_inline_depth) return false; |
0 | 2859 ciObject* one = const_oop(); |
2860 ciObject* two = a->const_oop(); | |
2861 if (one == NULL || two == NULL) { | |
2862 return (one == two) && TypePtr::eq(t); | |
2863 } else { | |
2864 return one->equals(two) && TypePtr::eq(t); | |
2865 } | |
2866 } | |
2867 | |
2868 //------------------------------hash------------------------------------------- | |
2869 // Type-specific hashing function. | |
2870 int TypeOopPtr::hash(void) const { | |
2871 return | |
2872 (const_oop() ? const_oop()->hash() : 0) + | |
2873 _klass_is_exact + | |
2874 _instance_id + | |
12966 | 2875 hash_speculative() + |
17731
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2876 _inline_depth + |
0 | 2877 TypePtr::hash(); |
2878 } | |
2879 | |
2880 //------------------------------dump2------------------------------------------ | |
2881 #ifndef PRODUCT | |
2882 void TypeOopPtr::dump2( Dict &d, uint depth, outputStream *st ) const { | |
2883 st->print("oopptr:%s", ptr_msg[_ptr]); | |
2884 if( _klass_is_exact ) st->print(":exact"); | |
2885 if( const_oop() ) st->print(INTPTR_FORMAT, const_oop()); | |
2886 switch( _offset ) { | |
2887 case OffsetTop: st->print("+top"); break; | |
2888 case OffsetBot: st->print("+any"); break; | |
2889 case 0: break; | |
2890 default: st->print("+%d",_offset); break; | |
2891 } | |
223 | 2892 if (_instance_id == InstanceTop) |
2893 st->print(",iid=top"); | |
2894 else if (_instance_id != InstanceBot) | |
0 | 2895 st->print(",iid=%d",_instance_id); |
12966 | 2896 |
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2897 dump_inline_depth(st); |
12966 | 2898 dump_speculative(st); |
2899 } | |
2900 | |
2901 /** | |
2902 *dump the speculative part of the type | |
2903 */ | |
2904 void TypeOopPtr::dump_speculative(outputStream *st) const { | |
2905 if (_speculative != NULL) { | |
2906 st->print(" (speculative="); | |
2907 _speculative->dump_on(st); | |
2908 st->print(")"); | |
2909 } | |
0 | 2910 } |
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2911 |
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2912 void TypeOopPtr::dump_inline_depth(outputStream *st) const { |
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2913 if (_inline_depth != InlineDepthBottom) { |
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2914 if (_inline_depth == InlineDepthTop) { |
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2915 st->print(" (inline_depth=InlineDepthTop)"); |
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2916 } else { |
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2917 st->print(" (inline_depth=%d)", _inline_depth); |
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2918 } |
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2919 } |
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|
2920 } |
0 | 2921 #endif |
2922 | |
2923 //------------------------------singleton-------------------------------------- | |
2924 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
2925 // constants | |
2926 bool TypeOopPtr::singleton(void) const { | |
2927 // detune optimizer to not generate constant oop + constant offset as a constant! | |
2928 // TopPTR, Null, AnyNull, Constant are all singletons | |
2929 return (_offset == 0) && !below_centerline(_ptr); | |
2930 } | |
2931 | |
2932 //------------------------------add_offset------------------------------------- | |
12966 | 2933 const TypePtr *TypeOopPtr::add_offset(intptr_t offset) const { |
17731
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2934 return make(_ptr, xadd_offset(offset), _instance_id, add_offset_speculative(offset), _inline_depth); |
12966 | 2935 } |
2936 | |
2937 /** | |
2938 * Return same type without a speculative part | |
2939 */ | |
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2940 const Type* TypeOopPtr::remove_speculative() const { |
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2941 if (_speculative == NULL) { |
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2942 return this; |
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|
2943 } |
17731
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2944 assert(_inline_depth == InlineDepthTop || _inline_depth == InlineDepthBottom, "non speculative type shouldn't have inline depth"); |
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2945 return make(_ptr, _offset, _instance_id, NULL, _inline_depth); |
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|
2946 } |
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|
2947 |
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|
2948 /** |
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2949 * Return same type but with a different inline depth (used for speculation) |
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2950 * |
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2951 * @param depth depth to meet with |
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|
2952 */ |
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2953 const TypeOopPtr* TypeOopPtr::with_inline_depth(int depth) const { |
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2954 if (!UseInlineDepthForSpeculativeTypes) { |
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|
2955 return this; |
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|
2956 } |
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2957 return make(_ptr, _offset, _instance_id, _speculative, depth); |
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|
2958 } |
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|
2959 |
62825ea7e51f
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|
2960 /** |
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|
2961 * Check whether new profiling would improve speculative type |
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|
2962 * |
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2963 * @param exact_kls class from profiling |
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2964 * @param inline_depth inlining depth of profile point |
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|
2965 * |
62825ea7e51f
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|
2966 * @return true if type profile is valuable |
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|
2967 */ |
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|
2968 bool TypeOopPtr::would_improve_type(ciKlass* exact_kls, int inline_depth) const { |
62825ea7e51f
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2969 // no way to improve an already exact type |
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|
2970 if (klass_is_exact()) { |
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|
2971 return false; |
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|
2972 } |
62825ea7e51f
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|
2973 // no profiling? |
62825ea7e51f
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roland
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|
2974 if (exact_kls == NULL) { |
62825ea7e51f
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roland
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|
2975 return false; |
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roland
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|
2976 } |
62825ea7e51f
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roland
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|
2977 // no speculative type or non exact speculative type? |
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|
2978 if (speculative_type() == NULL) { |
62825ea7e51f
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|
2979 return true; |
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roland
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|
2980 } |
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|
2981 // If the node already has an exact speculative type keep it, |
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2982 // unless it was provided by profiling that is at a deeper |
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2983 // inlining level. Profiling at a higher inlining depth is |
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2984 // expected to be less accurate. |
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|
2985 if (_speculative->inline_depth() == InlineDepthBottom) { |
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|
2986 return false; |
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|
2987 } |
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|
2988 assert(_speculative->inline_depth() != InlineDepthTop, "can't do the comparison"); |
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2989 return inline_depth < _speculative->inline_depth(); |
0 | 2990 } |
2991 | |
223 | 2992 //------------------------------meet_instance_id-------------------------------- |
2993 int TypeOopPtr::meet_instance_id( int instance_id ) const { | |
2994 // Either is 'TOP' instance? Return the other instance! | |
2995 if( _instance_id == InstanceTop ) return instance_id; | |
2996 if( instance_id == InstanceTop ) return _instance_id; | |
2997 // If either is different, return 'BOTTOM' instance | |
2998 if( _instance_id != instance_id ) return InstanceBot; | |
2999 return _instance_id; | |
0 | 3000 } |
3001 | |
223 | 3002 //------------------------------dual_instance_id-------------------------------- |
3003 int TypeOopPtr::dual_instance_id( ) const { | |
3004 if( _instance_id == InstanceTop ) return InstanceBot; // Map TOP into BOTTOM | |
3005 if( _instance_id == InstanceBot ) return InstanceTop; // Map BOTTOM into TOP | |
3006 return _instance_id; // Map everything else into self | |
3007 } | |
3008 | |
12966 | 3009 /** |
3010 * meet of the speculative parts of 2 types | |
3011 * | |
3012 * @param other type to meet with | |
3013 */ | |
17671
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3014 const TypeOopPtr* TypeOopPtr::xmeet_speculative(const TypeOopPtr* other) const { |
12966 | 3015 bool this_has_spec = (_speculative != NULL); |
3016 bool other_has_spec = (other->speculative() != NULL); | |
3017 | |
3018 if (!this_has_spec && !other_has_spec) { | |
3019 return NULL; | |
3020 } | |
3021 | |
3022 // If we are at a point where control flow meets and one branch has | |
3023 // a speculative type and the other has not, we meet the speculative | |
3024 // type of one branch with the actual type of the other. If the | |
3025 // actual type is exact and the speculative is as well, then the | |
3026 // result is a speculative type which is exact and we can continue | |
3027 // speculation further. | |
3028 const TypeOopPtr* this_spec = _speculative; | |
3029 const TypeOopPtr* other_spec = other->speculative(); | |
3030 | |
3031 if (!this_has_spec) { | |
3032 this_spec = this; | |
3033 } | |
3034 | |
3035 if (!other_has_spec) { | |
3036 other_spec = other; | |
3037 } | |
3038 | |
17671
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|
3039 return this_spec->meet_speculative(other_spec)->is_oopptr(); |
12966 | 3040 } |
3041 | |
3042 /** | |
3043 * dual of the speculative part of the type | |
3044 */ | |
3045 const TypeOopPtr* TypeOopPtr::dual_speculative() const { | |
3046 if (_speculative == NULL) { | |
3047 return NULL; | |
3048 } | |
3049 return _speculative->dual()->is_oopptr(); | |
3050 } | |
3051 | |
3052 /** | |
3053 * add offset to the speculative part of the type | |
3054 * | |
3055 * @param offset offset to add | |
3056 */ | |
3057 const TypeOopPtr* TypeOopPtr::add_offset_speculative(intptr_t offset) const { | |
3058 if (_speculative == NULL) { | |
3059 return NULL; | |
3060 } | |
3061 return _speculative->add_offset(offset)->is_oopptr(); | |
3062 } | |
3063 | |
3064 /** | |
3065 * Are the speculative parts of 2 types equal? | |
3066 * | |
3067 * @param other type to compare this one to | |
3068 */ | |
3069 bool TypeOopPtr::eq_speculative(const TypeOopPtr* other) const { | |
3070 if (_speculative == NULL || other->speculative() == NULL) { | |
3071 return _speculative == other->speculative(); | |
3072 } | |
3073 | |
3074 if (_speculative->base() != other->speculative()->base()) { | |
3075 return false; | |
3076 } | |
3077 | |
3078 return _speculative->eq(other->speculative()); | |
3079 } | |
3080 | |
3081 /** | |
3082 * Hash of the speculative part of the type | |
3083 */ | |
3084 int TypeOopPtr::hash_speculative() const { | |
3085 if (_speculative == NULL) { | |
3086 return 0; | |
3087 } | |
3088 | |
3089 return _speculative->hash(); | |
3090 } | |
3091 | |
17731
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|
3092 /** |
62825ea7e51f
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|
3093 * dual of the inline depth for this type (used for speculation) |
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|
3094 */ |
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|
3095 int TypeOopPtr::dual_inline_depth() const { |
62825ea7e51f
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|
3096 return -inline_depth(); |
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roland
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|
3097 } |
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roland
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|
3098 |
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3099 /** |
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3100 * meet of 2 inline depth (used for speculation) |
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3101 * |
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3102 * @param depth depth to meet with |
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3103 */ |
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3104 int TypeOopPtr::meet_inline_depth(int depth) const { |
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3105 return MAX2(inline_depth(), depth); |
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3106 } |
223 | 3107 |
0 | 3108 //============================================================================= |
3109 // Convenience common pre-built types. | |
3110 const TypeInstPtr *TypeInstPtr::NOTNULL; | |
3111 const TypeInstPtr *TypeInstPtr::BOTTOM; | |
3112 const TypeInstPtr *TypeInstPtr::MIRROR; | |
3113 const TypeInstPtr *TypeInstPtr::MARK; | |
3114 const TypeInstPtr *TypeInstPtr::KLASS; | |
3115 | |
3116 //------------------------------TypeInstPtr------------------------------------- | |
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3117 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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3118 : TypeOopPtr(InstPtr, ptr, k, xk, o, off, instance_id, speculative, inline_depth), _name(k->name()) { |
0 | 3119 assert(k != NULL && |
3120 (k->is_loaded() || o == NULL), | |
3121 "cannot have constants with non-loaded klass"); | |
3122 }; | |
3123 | |
3124 //------------------------------make------------------------------------------- | |
3125 const TypeInstPtr *TypeInstPtr::make(PTR ptr, | |
3126 ciKlass* k, | |
3127 bool xk, | |
3128 ciObject* o, | |
3129 int offset, | |
12966 | 3130 int instance_id, |
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3131 const TypeOopPtr* speculative, |
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3132 int inline_depth) { |
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3133 assert( !k->is_loaded() || k->is_instance_klass(), "Must be for instance"); |
0 | 3134 // Either const_oop() is NULL or else ptr is Constant |
3135 assert( (!o && ptr != Constant) || (o && ptr == Constant), | |
3136 "constant pointers must have a value supplied" ); | |
3137 // Ptr is never Null | |
3138 assert( ptr != Null, "NULL pointers are not typed" ); | |
3139 | |
247 | 3140 assert(instance_id <= 0 || xk || !UseExactTypes, "instances are always exactly typed"); |
0 | 3141 if (!UseExactTypes) xk = false; |
3142 if (ptr == Constant) { | |
3143 // Note: This case includes meta-object constants, such as methods. | |
3144 xk = true; | |
3145 } else if (k->is_loaded()) { | |
3146 ciInstanceKlass* ik = k->as_instance_klass(); | |
3147 if (!xk && ik->is_final()) xk = true; // no inexact final klass | |
3148 if (xk && ik->is_interface()) xk = false; // no exact interface | |
3149 } | |
3150 | |
3151 // Now hash this baby | |
3152 TypeInstPtr *result = | |
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3153 (TypeInstPtr*)(new TypeInstPtr(ptr, k, xk, o ,offset, instance_id, speculative, inline_depth))->hashcons(); |
0 | 3154 |
3155 return result; | |
3156 } | |
3157 | |
10278 | 3158 /** |
3159 * Create constant type for a constant boxed value | |
3160 */ | |
3161 const Type* TypeInstPtr::get_const_boxed_value() const { | |
3162 assert(is_ptr_to_boxed_value(), "should be called only for boxed value"); | |
3163 assert((const_oop() != NULL), "should be called only for constant object"); | |
3164 ciConstant constant = const_oop()->as_instance()->field_value_by_offset(offset()); | |
3165 BasicType bt = constant.basic_type(); | |
3166 switch (bt) { | |
3167 case T_BOOLEAN: return TypeInt::make(constant.as_boolean()); | |
3168 case T_INT: return TypeInt::make(constant.as_int()); | |
3169 case T_CHAR: return TypeInt::make(constant.as_char()); | |
3170 case T_BYTE: return TypeInt::make(constant.as_byte()); | |
3171 case T_SHORT: return TypeInt::make(constant.as_short()); | |
3172 case T_FLOAT: return TypeF::make(constant.as_float()); | |
3173 case T_DOUBLE: return TypeD::make(constant.as_double()); | |
3174 case T_LONG: return TypeLong::make(constant.as_long()); | |
3175 default: break; | |
3176 } | |
3177 fatal(err_msg_res("Invalid boxed value type '%s'", type2name(bt))); | |
3178 return NULL; | |
3179 } | |
0 | 3180 |
3181 //------------------------------cast_to_ptr_type------------------------------- | |
3182 const Type *TypeInstPtr::cast_to_ptr_type(PTR ptr) const { | |
3183 if( ptr == _ptr ) return this; | |
3184 // Reconstruct _sig info here since not a problem with later lazy | |
3185 // construction, _sig will show up on demand. | |
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3186 return make(ptr, klass(), klass_is_exact(), const_oop(), _offset, _instance_id, _speculative, _inline_depth); |
0 | 3187 } |
3188 | |
3189 | |
3190 //-----------------------------cast_to_exactness------------------------------- | |
3191 const Type *TypeInstPtr::cast_to_exactness(bool klass_is_exact) const { | |
3192 if( klass_is_exact == _klass_is_exact ) return this; | |
3193 if (!UseExactTypes) return this; | |
3194 if (!_klass->is_loaded()) return this; | |
3195 ciInstanceKlass* ik = _klass->as_instance_klass(); | |
3196 if( (ik->is_final() || _const_oop) ) return this; // cannot clear xk | |
3197 if( ik->is_interface() ) return this; // cannot set xk | |
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3198 return make(ptr(), klass(), klass_is_exact, const_oop(), _offset, _instance_id, _speculative, _inline_depth); |
0 | 3199 } |
3200 | |
247 | 3201 //-----------------------------cast_to_instance_id---------------------------- |
223 | 3202 const TypeOopPtr *TypeInstPtr::cast_to_instance_id(int instance_id) const { |
3203 if( instance_id == _instance_id ) return this; | |
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3204 return make(_ptr, klass(), _klass_is_exact, const_oop(), _offset, instance_id, _speculative, _inline_depth); |
0 | 3205 } |
3206 | |
3207 //------------------------------xmeet_unloaded--------------------------------- | |
3208 // Compute the MEET of two InstPtrs when at least one is unloaded. | |
3209 // Assume classes are different since called after check for same name/class-loader | |
3210 const TypeInstPtr *TypeInstPtr::xmeet_unloaded(const TypeInstPtr *tinst) const { | |
3211 int off = meet_offset(tinst->offset()); | |
3212 PTR ptr = meet_ptr(tinst->ptr()); | |
992 | 3213 int instance_id = meet_instance_id(tinst->instance_id()); |
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3214 const TypeOopPtr* speculative = xmeet_speculative(tinst); |
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3215 int depth = meet_inline_depth(tinst->inline_depth()); |
0 | 3216 |
3217 const TypeInstPtr *loaded = is_loaded() ? this : tinst; | |
3218 const TypeInstPtr *unloaded = is_loaded() ? tinst : this; | |
3219 if( loaded->klass()->equals(ciEnv::current()->Object_klass()) ) { | |
3220 // | |
3221 // Meet unloaded class with java/lang/Object | |
3222 // | |
3223 // Meet | |
3224 // | Unloaded Class | |
3225 // Object | TOP | AnyNull | Constant | NotNull | BOTTOM | | |
3226 // =================================================================== | |
3227 // TOP | ..........................Unloaded......................| | |
3228 // AnyNull | U-AN |................Unloaded......................| | |
3229 // Constant | ... O-NN .................................. | O-BOT | | |
3230 // NotNull | ... O-NN .................................. | O-BOT | | |
3231 // BOTTOM | ........................Object-BOTTOM ..................| | |
3232 // | |
3233 assert(loaded->ptr() != TypePtr::Null, "insanity check"); | |
3234 // | |
3235 if( loaded->ptr() == TypePtr::TopPTR ) { return unloaded; } | |
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3236 else if (loaded->ptr() == TypePtr::AnyNull) { return TypeInstPtr::make(ptr, unloaded->klass(), false, NULL, off, instance_id, speculative, depth); } |
0 | 3237 else if (loaded->ptr() == TypePtr::BotPTR ) { return TypeInstPtr::BOTTOM; } |
3238 else if (loaded->ptr() == TypePtr::Constant || loaded->ptr() == TypePtr::NotNull) { | |
3239 if (unloaded->ptr() == TypePtr::BotPTR ) { return TypeInstPtr::BOTTOM; } | |
3240 else { return TypeInstPtr::NOTNULL; } | |
3241 } | |
3242 else if( unloaded->ptr() == TypePtr::TopPTR ) { return unloaded; } | |
3243 | |
3244 return unloaded->cast_to_ptr_type(TypePtr::AnyNull)->is_instptr(); | |
3245 } | |
3246 | |
3247 // Both are unloaded, not the same class, not Object | |
3248 // Or meet unloaded with a different loaded class, not java/lang/Object | |
3249 if( ptr != TypePtr::BotPTR ) { | |
3250 return TypeInstPtr::NOTNULL; | |
3251 } | |
3252 return TypeInstPtr::BOTTOM; | |
3253 } | |
3254 | |
3255 | |
3256 //------------------------------meet------------------------------------------- | |
3257 // Compute the MEET of two types. It returns a new Type object. | |
12966 | 3258 const Type *TypeInstPtr::xmeet_helper(const Type *t) const { |
0 | 3259 // Perform a fast test for common case; meeting the same types together. |
3260 if( this == t ) return this; // Meeting same type-rep? | |
3261 | |
3262 // Current "this->_base" is Pointer | |
3263 switch (t->base()) { // switch on original type | |
3264 | |
3265 case Int: // Mixing ints & oops happens when javac | |
3266 case Long: // reuses local variables | |
3267 case FloatTop: | |
3268 case FloatCon: | |
3269 case FloatBot: | |
3270 case DoubleTop: | |
3271 case DoubleCon: | |
3272 case DoubleBot: | |
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3273 case NarrowOop: |
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3274 case NarrowKlass: |
0 | 3275 case Bottom: // Ye Olde Default |
3276 return Type::BOTTOM; | |
3277 case Top: | |
3278 return this; | |
3279 | |
3280 default: // All else is a mistake | |
3281 typerr(t); | |
3282 | |
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3283 case MetadataPtr: |
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3284 case KlassPtr: |
0 | 3285 case RawPtr: return TypePtr::BOTTOM; |
3286 | |
3287 case AryPtr: { // All arrays inherit from Object class | |
3288 const TypeAryPtr *tp = t->is_aryptr(); | |
3289 int offset = meet_offset(tp->offset()); | |
3290 PTR ptr = meet_ptr(tp->ptr()); | |
223 | 3291 int instance_id = meet_instance_id(tp->instance_id()); |
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3292 const TypeOopPtr* speculative = xmeet_speculative(tp); |
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3293 int depth = meet_inline_depth(tp->inline_depth()); |
0 | 3294 switch (ptr) { |
3295 case TopPTR: | |
3296 case AnyNull: // Fall 'down' to dual of object klass | |
12966 | 3297 // For instances when a subclass meets a superclass we fall |
3298 // below the centerline when the superclass is exact. We need to | |
3299 // do the same here. | |
3300 if (klass()->equals(ciEnv::current()->Object_klass()) && !klass_is_exact()) { | |
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3301 return TypeAryPtr::make(ptr, tp->ary(), tp->klass(), tp->klass_is_exact(), offset, instance_id, speculative, depth); |
0 | 3302 } else { |
3303 // cannot subclass, so the meet has to fall badly below the centerline | |
3304 ptr = NotNull; | |
223 | 3305 instance_id = InstanceBot; |
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3306 return TypeInstPtr::make( ptr, ciEnv::current()->Object_klass(), false, NULL, offset, instance_id, speculative, depth); |
0 | 3307 } |
3308 case Constant: | |
3309 case NotNull: | |
3310 case BotPTR: // Fall down to object klass | |
3311 // LCA is object_klass, but if we subclass from the top we can do better | |
3312 if( above_centerline(_ptr) ) { // if( _ptr == TopPTR || _ptr == AnyNull ) | |
3313 // If 'this' (InstPtr) is above the centerline and it is Object class | |
605 | 3314 // then we can subclass in the Java class hierarchy. |
12966 | 3315 // For instances when a subclass meets a superclass we fall |
3316 // below the centerline when the superclass is exact. We need | |
3317 // to do the same here. | |
3318 if (klass()->equals(ciEnv::current()->Object_klass()) && !klass_is_exact()) { | |
0 | 3319 // that is, tp's array type is a subtype of my klass |
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3320 return TypeAryPtr::make(ptr, (ptr == Constant ? tp->const_oop() : NULL), |
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3321 tp->ary(), tp->klass(), tp->klass_is_exact(), offset, instance_id, speculative, depth); |
0 | 3322 } |
3323 } | |
3324 // The other case cannot happen, since I cannot be a subtype of an array. | |
3325 // The meet falls down to Object class below centerline. | |
3326 if( ptr == Constant ) | |
3327 ptr = NotNull; | |
223 | 3328 instance_id = InstanceBot; |
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3329 return make(ptr, ciEnv::current()->Object_klass(), false, NULL, offset, instance_id, speculative, depth); |
0 | 3330 default: typerr(t); |
3331 } | |
3332 } | |
3333 | |
3334 case OopPtr: { // Meeting to OopPtrs | |
3335 // Found a OopPtr type vs self-InstPtr type | |
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3336 const TypeOopPtr *tp = t->is_oopptr(); |
0 | 3337 int offset = meet_offset(tp->offset()); |
3338 PTR ptr = meet_ptr(tp->ptr()); | |
3339 switch (tp->ptr()) { | |
3340 case TopPTR: | |
223 | 3341 case AnyNull: { |
3342 int instance_id = meet_instance_id(InstanceTop); | |
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3343 const TypeOopPtr* speculative = xmeet_speculative(tp); |
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3344 int depth = meet_inline_depth(tp->inline_depth()); |
0 | 3345 return make(ptr, klass(), klass_is_exact(), |
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3346 (ptr == Constant ? const_oop() : NULL), offset, instance_id, speculative, depth); |
223 | 3347 } |
0 | 3348 case NotNull: |
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3349 case BotPTR: { |
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3350 int instance_id = meet_instance_id(tp->instance_id()); |
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3351 const TypeOopPtr* speculative = xmeet_speculative(tp); |
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3352 int depth = meet_inline_depth(tp->inline_depth()); |
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3353 return TypeOopPtr::make(ptr, offset, instance_id, speculative, depth); |
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3354 } |
0 | 3355 default: typerr(t); |
3356 } | |
3357 } | |
3358 | |
3359 case AnyPtr: { // Meeting to AnyPtrs | |
3360 // Found an AnyPtr type vs self-InstPtr type | |
3361 const TypePtr *tp = t->is_ptr(); | |
3362 int offset = meet_offset(tp->offset()); | |
3363 PTR ptr = meet_ptr(tp->ptr()); | |
3364 switch (tp->ptr()) { | |
3365 case Null: | |
12966 | 3366 if( ptr == Null ) return TypePtr::make(AnyPtr, ptr, offset); |
223 | 3367 // else fall through to AnyNull |
0 | 3368 case TopPTR: |
223 | 3369 case AnyNull: { |
3370 int instance_id = meet_instance_id(InstanceTop); | |
12966 | 3371 const TypeOopPtr* speculative = _speculative; |
3372 return make(ptr, klass(), klass_is_exact(), | |
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3373 (ptr == Constant ? const_oop() : NULL), offset, instance_id, speculative, _inline_depth); |
223 | 3374 } |
0 | 3375 case NotNull: |
3376 case BotPTR: | |
12966 | 3377 return TypePtr::make(AnyPtr, ptr, offset); |
0 | 3378 default: typerr(t); |
3379 } | |
3380 } | |
3381 | |
3382 /* | |
3383 A-top } | |
3384 / | \ } Tops | |
3385 B-top A-any C-top } | |
3386 | / | \ | } Any-nulls | |
3387 B-any | C-any } | |
3388 | | | | |
3389 B-con A-con C-con } constants; not comparable across classes | |
3390 | | | | |
3391 B-not | C-not } | |
3392 | \ | / | } not-nulls | |
3393 B-bot A-not C-bot } | |
3394 \ | / } Bottoms | |
3395 A-bot } | |
3396 */ | |
3397 | |
3398 case InstPtr: { // Meeting 2 Oops? | |
3399 // Found an InstPtr sub-type vs self-InstPtr type | |
3400 const TypeInstPtr *tinst = t->is_instptr(); | |
3401 int off = meet_offset( tinst->offset() ); | |
3402 PTR ptr = meet_ptr( tinst->ptr() ); | |
223 | 3403 int instance_id = meet_instance_id(tinst->instance_id()); |
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3404 const TypeOopPtr* speculative = xmeet_speculative(tinst); |
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3405 int depth = meet_inline_depth(tinst->inline_depth()); |
0 | 3406 |
3407 // Check for easy case; klasses are equal (and perhaps not loaded!) | |
3408 // If we have constants, then we created oops so classes are loaded | |
3409 // and we can handle the constants further down. This case handles | |
3410 // both-not-loaded or both-loaded classes | |
3411 if (ptr != Constant && klass()->equals(tinst->klass()) && klass_is_exact() == tinst->klass_is_exact()) { | |
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3412 return make(ptr, klass(), klass_is_exact(), NULL, off, instance_id, speculative, depth); |
0 | 3413 } |
3414 | |
3415 // Classes require inspection in the Java klass hierarchy. Must be loaded. | |
3416 ciKlass* tinst_klass = tinst->klass(); | |
3417 ciKlass* this_klass = this->klass(); | |
3418 bool tinst_xk = tinst->klass_is_exact(); | |
3419 bool this_xk = this->klass_is_exact(); | |
3420 if (!tinst_klass->is_loaded() || !this_klass->is_loaded() ) { | |
3421 // One of these classes has not been loaded | |
3422 const TypeInstPtr *unloaded_meet = xmeet_unloaded(tinst); | |
3423 #ifndef PRODUCT | |
3424 if( PrintOpto && Verbose ) { | |
3425 tty->print("meet of unloaded classes resulted in: "); unloaded_meet->dump(); tty->cr(); | |
3426 tty->print(" this == "); this->dump(); tty->cr(); | |
3427 tty->print(" tinst == "); tinst->dump(); tty->cr(); | |
3428 } | |
3429 #endif | |
3430 return unloaded_meet; | |
3431 } | |
3432 | |
3433 // Handle mixing oops and interfaces first. | |
12966 | 3434 if( this_klass->is_interface() && !(tinst_klass->is_interface() || |
3435 tinst_klass == ciEnv::current()->Object_klass())) { | |
0 | 3436 ciKlass *tmp = tinst_klass; // Swap interface around |
3437 tinst_klass = this_klass; | |
3438 this_klass = tmp; | |
3439 bool tmp2 = tinst_xk; | |
3440 tinst_xk = this_xk; | |
3441 this_xk = tmp2; | |
3442 } | |
3443 if (tinst_klass->is_interface() && | |
3444 !(this_klass->is_interface() || | |
3445 // Treat java/lang/Object as an honorary interface, | |
3446 // because we need a bottom for the interface hierarchy. | |
3447 this_klass == ciEnv::current()->Object_klass())) { | |
3448 // Oop meets interface! | |
3449 | |
3450 // See if the oop subtypes (implements) interface. | |
3451 ciKlass *k; | |
3452 bool xk; | |
3453 if( this_klass->is_subtype_of( tinst_klass ) ) { | |
3454 // Oop indeed subtypes. Now keep oop or interface depending | |
3455 // on whether we are both above the centerline or either is | |
3456 // below the centerline. If we are on the centerline | |
3457 // (e.g., Constant vs. AnyNull interface), use the constant. | |
3458 k = below_centerline(ptr) ? tinst_klass : this_klass; | |
3459 // If we are keeping this_klass, keep its exactness too. | |
3460 xk = below_centerline(ptr) ? tinst_xk : this_xk; | |
3461 } else { // Does not implement, fall to Object | |
3462 // Oop does not implement interface, so mixing falls to Object | |
3463 // just like the verifier does (if both are above the | |
3464 // centerline fall to interface) | |
3465 k = above_centerline(ptr) ? tinst_klass : ciEnv::current()->Object_klass(); | |
3466 xk = above_centerline(ptr) ? tinst_xk : false; | |
3467 // Watch out for Constant vs. AnyNull interface. | |
3468 if (ptr == Constant) ptr = NotNull; // forget it was a constant | |
247 | 3469 instance_id = InstanceBot; |
0 | 3470 } |
3471 ciObject* o = NULL; // the Constant value, if any | |
3472 if (ptr == Constant) { | |
3473 // Find out which constant. | |
3474 o = (this_klass == klass()) ? const_oop() : tinst->const_oop(); | |
3475 } | |
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3476 return make(ptr, k, xk, o, off, instance_id, speculative, depth); |
0 | 3477 } |
3478 | |
3479 // Either oop vs oop or interface vs interface or interface vs Object | |
3480 | |
3481 // !!! Here's how the symmetry requirement breaks down into invariants: | |
3482 // If we split one up & one down AND they subtype, take the down man. | |
3483 // If we split one up & one down AND they do NOT subtype, "fall hard". | |
3484 // If both are up and they subtype, take the subtype class. | |
3485 // If both are up and they do NOT subtype, "fall hard". | |
3486 // If both are down and they subtype, take the supertype class. | |
3487 // If both are down and they do NOT subtype, "fall hard". | |
3488 // Constants treated as down. | |
3489 | |
3490 // Now, reorder the above list; observe that both-down+subtype is also | |
3491 // "fall hard"; "fall hard" becomes the default case: | |
3492 // If we split one up & one down AND they subtype, take the down man. | |
3493 // If both are up and they subtype, take the subtype class. | |
3494 | |
3495 // If both are down and they subtype, "fall hard". | |
3496 // If both are down and they do NOT subtype, "fall hard". | |
3497 // If both are up and they do NOT subtype, "fall hard". | |
3498 // If we split one up & one down AND they do NOT subtype, "fall hard". | |
3499 | |
3500 // If a proper subtype is exact, and we return it, we return it exactly. | |
3501 // If a proper supertype is exact, there can be no subtyping relationship! | |
3502 // If both types are equal to the subtype, exactness is and-ed below the | |
3503 // centerline and or-ed above it. (N.B. Constants are always exact.) | |
3504 | |
3505 // Check for subtyping: | |
3506 ciKlass *subtype = NULL; | |
3507 bool subtype_exact = false; | |
3508 if( tinst_klass->equals(this_klass) ) { | |
3509 subtype = this_klass; | |
3510 subtype_exact = below_centerline(ptr) ? (this_xk & tinst_xk) : (this_xk | tinst_xk); | |
3511 } else if( !tinst_xk && this_klass->is_subtype_of( tinst_klass ) ) { | |
3512 subtype = this_klass; // Pick subtyping class | |
3513 subtype_exact = this_xk; | |
3514 } else if( !this_xk && tinst_klass->is_subtype_of( this_klass ) ) { | |
3515 subtype = tinst_klass; // Pick subtyping class | |
3516 subtype_exact = tinst_xk; | |
3517 } | |
3518 | |
3519 if( subtype ) { | |
3520 if( above_centerline(ptr) ) { // both are up? | |
3521 this_klass = tinst_klass = subtype; | |
3522 this_xk = tinst_xk = subtype_exact; | |
3523 } else if( above_centerline(this ->_ptr) && !above_centerline(tinst->_ptr) ) { | |
3524 this_klass = tinst_klass; // tinst is down; keep down man | |
3525 this_xk = tinst_xk; | |
3526 } else if( above_centerline(tinst->_ptr) && !above_centerline(this ->_ptr) ) { | |
3527 tinst_klass = this_klass; // this is down; keep down man | |
3528 tinst_xk = this_xk; | |
3529 } else { | |
3530 this_xk = subtype_exact; // either they are equal, or we'll do an LCA | |
3531 } | |
3532 } | |
3533 | |
3534 // Check for classes now being equal | |
3535 if (tinst_klass->equals(this_klass)) { | |
3536 // If the klasses are equal, the constants may still differ. Fall to | |
3537 // NotNull if they do (neither constant is NULL; that is a special case | |
3538 // handled elsewhere). | |
3539 ciObject* o = NULL; // Assume not constant when done | |
3540 ciObject* this_oop = const_oop(); | |
3541 ciObject* tinst_oop = tinst->const_oop(); | |
3542 if( ptr == Constant ) { | |
3543 if (this_oop != NULL && tinst_oop != NULL && | |
3544 this_oop->equals(tinst_oop) ) | |
3545 o = this_oop; | |
3546 else if (above_centerline(this ->_ptr)) | |
3547 o = tinst_oop; | |
3548 else if (above_centerline(tinst ->_ptr)) | |
3549 o = this_oop; | |
3550 else | |
3551 ptr = NotNull; | |
3552 } | |
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3553 return make(ptr, this_klass, this_xk, o, off, instance_id, speculative, depth); |
0 | 3554 } // Else classes are not equal |
3555 | |
3556 // Since klasses are different, we require a LCA in the Java | |
3557 // class hierarchy - which means we have to fall to at least NotNull. | |
3558 if( ptr == TopPTR || ptr == AnyNull || ptr == Constant ) | |
3559 ptr = NotNull; | |
247 | 3560 instance_id = InstanceBot; |
0 | 3561 |
3562 // Now we find the LCA of Java classes | |
3563 ciKlass* k = this_klass->least_common_ancestor(tinst_klass); | |
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3564 return make(ptr, k, false, NULL, off, instance_id, speculative, depth); |
0 | 3565 } // End of case InstPtr |
3566 | |
3567 } // End of switch | |
3568 return this; // Return the double constant | |
3569 } | |
3570 | |
3571 | |
3572 //------------------------java_mirror_type-------------------------------------- | |
3573 ciType* TypeInstPtr::java_mirror_type() const { | |
3574 // must be a singleton type | |
3575 if( const_oop() == NULL ) return NULL; | |
3576 | |
3577 // must be of type java.lang.Class | |
3578 if( klass() != ciEnv::current()->Class_klass() ) return NULL; | |
3579 | |
3580 return const_oop()->as_instance()->java_mirror_type(); | |
3581 } | |
3582 | |
3583 | |
3584 //------------------------------xdual------------------------------------------ | |
3585 // Dual: do NOT dual on klasses. This means I do NOT understand the Java | |
605 | 3586 // inheritance mechanism. |
0 | 3587 const Type *TypeInstPtr::xdual() const { |
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3588 return new TypeInstPtr(dual_ptr(), klass(), klass_is_exact(), const_oop(), dual_offset(), dual_instance_id(), dual_speculative(), dual_inline_depth()); |
0 | 3589 } |
3590 | |
3591 //------------------------------eq--------------------------------------------- | |
3592 // Structural equality check for Type representations | |
3593 bool TypeInstPtr::eq( const Type *t ) const { | |
3594 const TypeInstPtr *p = t->is_instptr(); | |
3595 return | |
3596 klass()->equals(p->klass()) && | |
3597 TypeOopPtr::eq(p); // Check sub-type stuff | |
3598 } | |
3599 | |
3600 //------------------------------hash------------------------------------------- | |
3601 // Type-specific hashing function. | |
3602 int TypeInstPtr::hash(void) const { | |
3603 int hash = klass()->hash() + TypeOopPtr::hash(); | |
3604 return hash; | |
3605 } | |
3606 | |
3607 //------------------------------dump2------------------------------------------ | |
3608 // Dump oop Type | |
3609 #ifndef PRODUCT | |
3610 void TypeInstPtr::dump2( Dict &d, uint depth, outputStream *st ) const { | |
3611 // Print the name of the klass. | |
3612 klass()->print_name_on(st); | |
3613 | |
3614 switch( _ptr ) { | |
3615 case Constant: | |
3616 // TO DO: Make CI print the hex address of the underlying oop. | |
3617 if (WizardMode || Verbose) { | |
3618 const_oop()->print_oop(st); | |
3619 } | |
3620 case BotPTR: | |
3621 if (!WizardMode && !Verbose) { | |
3622 if( _klass_is_exact ) st->print(":exact"); | |
3623 break; | |
3624 } | |
3625 case TopPTR: | |
3626 case AnyNull: | |
3627 case NotNull: | |
3628 st->print(":%s", ptr_msg[_ptr]); | |
3629 if( _klass_is_exact ) st->print(":exact"); | |
3630 break; | |
3631 } | |
3632 | |
3633 if( _offset ) { // Dump offset, if any | |
3634 if( _offset == OffsetBot ) st->print("+any"); | |
3635 else if( _offset == OffsetTop ) st->print("+unknown"); | |
3636 else st->print("+%d", _offset); | |
3637 } | |
3638 | |
3639 st->print(" *"); | |
223 | 3640 if (_instance_id == InstanceTop) |
3641 st->print(",iid=top"); | |
3642 else if (_instance_id != InstanceBot) | |
0 | 3643 st->print(",iid=%d",_instance_id); |
12966 | 3644 |
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3645 dump_inline_depth(st); |
12966 | 3646 dump_speculative(st); |
0 | 3647 } |
3648 #endif | |
3649 | |
3650 //------------------------------add_offset------------------------------------- | |
12966 | 3651 const TypePtr *TypeInstPtr::add_offset(intptr_t offset) const { |
3652 return make(_ptr, klass(), klass_is_exact(), const_oop(), xadd_offset(offset), _instance_id, add_offset_speculative(offset)); | |
3653 } | |
3654 | |
17671
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17619
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|
3655 const Type *TypeInstPtr::remove_speculative() const { |
de95063c0e34
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
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3656 if (_speculative == NULL) { |
de95063c0e34
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17619
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3657 return this; |
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changeset
|
3658 } |
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3659 assert(_inline_depth == InlineDepthTop || _inline_depth == InlineDepthBottom, "non speculative type shouldn't have inline depth"); |
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3660 return make(_ptr, klass(), klass_is_exact(), const_oop(), _offset, _instance_id, NULL, _inline_depth); |
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3661 } |
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3662 |
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3663 const TypeOopPtr *TypeInstPtr::with_inline_depth(int depth) const { |
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8031754: Type speculation should favor profile data from outermost inlined method
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3664 if (!UseInlineDepthForSpeculativeTypes) { |
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|
3665 return this; |
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|
3666 } |
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|
3667 return make(_ptr, klass(), klass_is_exact(), const_oop(), _offset, _instance_id, _speculative, depth); |
0 | 3668 } |
3669 | |
3670 //============================================================================= | |
3671 // Convenience common pre-built types. | |
3672 const TypeAryPtr *TypeAryPtr::RANGE; | |
3673 const TypeAryPtr *TypeAryPtr::OOPS; | |
163 | 3674 const TypeAryPtr *TypeAryPtr::NARROWOOPS; |
0 | 3675 const TypeAryPtr *TypeAryPtr::BYTES; |
3676 const TypeAryPtr *TypeAryPtr::SHORTS; | |
3677 const TypeAryPtr *TypeAryPtr::CHARS; | |
3678 const TypeAryPtr *TypeAryPtr::INTS; | |
3679 const TypeAryPtr *TypeAryPtr::LONGS; | |
3680 const TypeAryPtr *TypeAryPtr::FLOATS; | |
3681 const TypeAryPtr *TypeAryPtr::DOUBLES; | |
3682 | |
3683 //------------------------------make------------------------------------------- | |
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3684 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 | 3685 assert(!(k == NULL && ary->_elem->isa_int()), |
3686 "integral arrays must be pre-equipped with a class"); | |
3687 if (!xk) xk = ary->ary_must_be_exact(); | |
247 | 3688 assert(instance_id <= 0 || xk || !UseExactTypes, "instances are always exactly typed"); |
0 | 3689 if (!UseExactTypes) xk = (ptr == Constant); |
17731
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|
3690 return (TypeAryPtr*)(new TypeAryPtr(ptr, NULL, ary, k, xk, offset, instance_id, false, speculative, inline_depth))->hashcons(); |
0 | 3691 } |
3692 | |
3693 //------------------------------make------------------------------------------- | |
17731
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|
3694 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 | 3695 assert(!(k == NULL && ary->_elem->isa_int()), |
3696 "integral arrays must be pre-equipped with a class"); | |
3697 assert( (ptr==Constant && o) || (ptr!=Constant && !o), "" ); | |
3698 if (!xk) xk = (o != NULL) || ary->ary_must_be_exact(); | |
247 | 3699 assert(instance_id <= 0 || xk || !UseExactTypes, "instances are always exactly typed"); |
0 | 3700 if (!UseExactTypes) xk = (ptr == Constant); |
17731
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|
3701 return (TypeAryPtr*)(new TypeAryPtr(ptr, o, ary, k, xk, offset, instance_id, is_autobox_cache, speculative, inline_depth))->hashcons(); |
0 | 3702 } |
3703 | |
3704 //------------------------------cast_to_ptr_type------------------------------- | |
3705 const Type *TypeAryPtr::cast_to_ptr_type(PTR ptr) const { | |
3706 if( ptr == _ptr ) return this; | |
17731
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3707 return make(ptr, const_oop(), _ary, klass(), klass_is_exact(), _offset, _instance_id, _speculative, _inline_depth); |
0 | 3708 } |
3709 | |
3710 | |
3711 //-----------------------------cast_to_exactness------------------------------- | |
3712 const Type *TypeAryPtr::cast_to_exactness(bool klass_is_exact) const { | |
3713 if( klass_is_exact == _klass_is_exact ) return this; | |
3714 if (!UseExactTypes) return this; | |
3715 if (_ary->ary_must_be_exact()) return this; // cannot clear xk | |
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|
3716 return make(ptr(), const_oop(), _ary, klass(), klass_is_exact, _offset, _instance_id, _speculative, _inline_depth); |
0 | 3717 } |
3718 | |
247 | 3719 //-----------------------------cast_to_instance_id---------------------------- |
223 | 3720 const TypeOopPtr *TypeAryPtr::cast_to_instance_id(int instance_id) const { |
3721 if( instance_id == _instance_id ) return this; | |
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|
3722 return make(_ptr, const_oop(), _ary, klass(), _klass_is_exact, _offset, instance_id, _speculative, _inline_depth); |
0 | 3723 } |
3724 | |
3725 //-----------------------------narrow_size_type------------------------------- | |
3726 // Local cache for arrayOopDesc::max_array_length(etype), | |
3727 // which is kind of slow (and cached elsewhere by other users). | |
3728 static jint max_array_length_cache[T_CONFLICT+1]; | |
3729 static jint max_array_length(BasicType etype) { | |
3730 jint& cache = max_array_length_cache[etype]; | |
3731 jint res = cache; | |
3732 if (res == 0) { | |
3733 switch (etype) { | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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64
diff
changeset
|
3734 case T_NARROWOOP: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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64
diff
changeset
|
3735 etype = T_OBJECT; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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64
diff
changeset
|
3736 break; |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
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parents:
6735
diff
changeset
|
3737 case T_NARROWKLASS: |
0 | 3738 case T_CONFLICT: |
3739 case T_ILLEGAL: | |
3740 case T_VOID: | |
3741 etype = T_BYTE; // will produce conservatively high value | |
3742 } | |
3743 cache = res = arrayOopDesc::max_array_length(etype); | |
3744 } | |
3745 return res; | |
3746 } | |
3747 | |
3748 // Narrow the given size type to the index range for the given array base type. | |
3749 // Return NULL if the resulting int type becomes empty. | |
366
8261ee795323
6711100: 64bit fastdebug server vm crashes with assert(_base == Int,"Not an Int")
rasbold
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306
diff
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|
3750 const TypeInt* TypeAryPtr::narrow_size_type(const TypeInt* size) const { |
0 | 3751 jint hi = size->_hi; |
3752 jint lo = size->_lo; | |
3753 jint min_lo = 0; | |
366
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|
3754 jint max_hi = max_array_length(elem()->basic_type()); |
0 | 3755 //if (index_not_size) --max_hi; // type of a valid array index, FTR |
3756 bool chg = false; | |
10278 | 3757 if (lo < min_lo) { |
3758 lo = min_lo; | |
3759 if (size->is_con()) { | |
3760 hi = lo; | |
3761 } | |
3762 chg = true; | |
3763 } | |
3764 if (hi > max_hi) { | |
3765 hi = max_hi; | |
3766 if (size->is_con()) { | |
3767 lo = hi; | |
3768 } | |
3769 chg = true; | |
3770 } | |
605 | 3771 // Negative length arrays will produce weird intermediate dead fast-path code |
0 | 3772 if (lo > hi) |
366
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6711100: 64bit fastdebug server vm crashes with assert(_base == Int,"Not an Int")
rasbold
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diff
changeset
|
3773 return TypeInt::ZERO; |
0 | 3774 if (!chg) |
3775 return size; | |
3776 return TypeInt::make(lo, hi, Type::WidenMin); | |
3777 } | |
3778 | |
3779 //-------------------------------cast_to_size---------------------------------- | |
3780 const TypeAryPtr* TypeAryPtr::cast_to_size(const TypeInt* new_size) const { | |
3781 assert(new_size != NULL, ""); | |
366
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diff
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|
3782 new_size = narrow_size_type(new_size); |
0 | 3783 if (new_size == size()) return this; |
12190
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8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
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10278
diff
changeset
|
3784 const TypeAry* new_ary = TypeAry::make(elem(), new_size, is_stable()); |
17731
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roland
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diff
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|
3785 return make(ptr(), const_oop(), new_ary, klass(), klass_is_exact(), _offset, _instance_id, _speculative, _inline_depth); |
0 | 3786 } |
3787 | |
3788 | |
12190
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|
3789 //------------------------------cast_to_stable--------------------------------- |
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
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10278
diff
changeset
|
3790 const TypeAryPtr* TypeAryPtr::cast_to_stable(bool stable, int stable_dimension) const { |
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
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10278
diff
changeset
|
3791 if (stable_dimension <= 0 || (stable_dimension == 1 && stable == this->is_stable())) |
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
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10278
diff
changeset
|
3792 return this; |
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|
3793 |
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3794 const Type* elem = this->elem(); |
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3795 const TypePtr* elem_ptr = elem->make_ptr(); |
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|
3796 |
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|
3797 if (stable_dimension > 1 && elem_ptr != NULL && elem_ptr->isa_aryptr()) { |
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3798 // If this is widened from a narrow oop, TypeAry::make will re-narrow it. |
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3799 elem = elem_ptr = elem_ptr->is_aryptr()->cast_to_stable(stable, stable_dimension - 1); |
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|
3800 } |
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|
3801 |
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3802 const TypeAry* new_ary = TypeAry::make(elem, size(), stable); |
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3803 |
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|
3804 return make(ptr(), const_oop(), new_ary, klass(), klass_is_exact(), _offset, _instance_id); |
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|
3805 } |
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|
3806 |
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|
3807 //-----------------------------stable_dimension-------------------------------- |
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|
3808 int TypeAryPtr::stable_dimension() const { |
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|
3809 if (!is_stable()) return 0; |
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|
3810 int dim = 1; |
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|
3811 const TypePtr* elem_ptr = elem()->make_ptr(); |
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3812 if (elem_ptr != NULL && elem_ptr->isa_aryptr()) |
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3813 dim += elem_ptr->is_aryptr()->stable_dimension(); |
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3814 return dim; |
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|
3815 } |
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|
3816 |
0 | 3817 //------------------------------eq--------------------------------------------- |
3818 // Structural equality check for Type representations | |
3819 bool TypeAryPtr::eq( const Type *t ) const { | |
3820 const TypeAryPtr *p = t->is_aryptr(); | |
3821 return | |
3822 _ary == p->_ary && // Check array | |
3823 TypeOopPtr::eq(p); // Check sub-parts | |
3824 } | |
3825 | |
3826 //------------------------------hash------------------------------------------- | |
3827 // Type-specific hashing function. | |
3828 int TypeAryPtr::hash(void) const { | |
3829 return (intptr_t)_ary + TypeOopPtr::hash(); | |
3830 } | |
3831 | |
3832 //------------------------------meet------------------------------------------- | |
3833 // Compute the MEET of two types. It returns a new Type object. | |
12966 | 3834 const Type *TypeAryPtr::xmeet_helper(const Type *t) const { |
0 | 3835 // Perform a fast test for common case; meeting the same types together. |
3836 if( this == t ) return this; // Meeting same type-rep? | |
3837 // Current "this->_base" is Pointer | |
3838 switch (t->base()) { // switch on original type | |
3839 | |
3840 // Mixing ints & oops happens when javac reuses local variables | |
3841 case Int: | |
3842 case Long: | |
3843 case FloatTop: | |
3844 case FloatCon: | |
3845 case FloatBot: | |
3846 case DoubleTop: | |
3847 case DoubleCon: | |
3848 case DoubleBot: | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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diff
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|
3849 case NarrowOop: |
6848
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7054512: Compress class pointers after perm gen removal
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diff
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|
3850 case NarrowKlass: |
0 | 3851 case Bottom: // Ye Olde Default |
3852 return Type::BOTTOM; | |
3853 case Top: | |
3854 return this; | |
3855 | |
3856 default: // All else is a mistake | |
3857 typerr(t); | |
3858 | |
3859 case OopPtr: { // Meeting to OopPtrs | |
3860 // Found a OopPtr type vs self-AryPtr type | |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
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diff
changeset
|
3861 const TypeOopPtr *tp = t->is_oopptr(); |
0 | 3862 int offset = meet_offset(tp->offset()); |
3863 PTR ptr = meet_ptr(tp->ptr()); | |
17731
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|
3864 int depth = meet_inline_depth(tp->inline_depth()); |
0 | 3865 switch (tp->ptr()) { |
3866 case TopPTR: | |
223 | 3867 case AnyNull: { |
3868 int instance_id = meet_instance_id(InstanceTop); | |
17671
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8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
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diff
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|
3869 const TypeOopPtr* speculative = xmeet_speculative(tp); |
223 | 3870 return make(ptr, (ptr == Constant ? const_oop() : NULL), |
17731
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|
3871 _ary, _klass, _klass_is_exact, offset, instance_id, speculative, depth); |
223 | 3872 } |
0 | 3873 case BotPTR: |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
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diff
changeset
|
3874 case NotNull: { |
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
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diff
changeset
|
3875 int instance_id = meet_instance_id(tp->instance_id()); |
17671
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roland
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diff
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|
3876 const TypeOopPtr* speculative = xmeet_speculative(tp); |
17731
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roland
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|
3877 return TypeOopPtr::make(ptr, offset, instance_id, speculative, depth); |
958
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6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
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|
3878 } |
0 | 3879 default: ShouldNotReachHere(); |
3880 } | |
3881 } | |
3882 | |
3883 case AnyPtr: { // Meeting two AnyPtrs | |
3884 // Found an AnyPtr type vs self-AryPtr type | |
3885 const TypePtr *tp = t->is_ptr(); | |
3886 int offset = meet_offset(tp->offset()); | |
3887 PTR ptr = meet_ptr(tp->ptr()); | |
3888 switch (tp->ptr()) { | |
3889 case TopPTR: | |
3890 return this; | |
3891 case BotPTR: | |
3892 case NotNull: | |
3893 return TypePtr::make(AnyPtr, ptr, offset); | |
3894 case Null: | |
3895 if( ptr == Null ) return TypePtr::make(AnyPtr, ptr, offset); | |
223 | 3896 // else fall through to AnyNull |
3897 case AnyNull: { | |
3898 int instance_id = meet_instance_id(InstanceTop); | |
12966 | 3899 const TypeOopPtr* speculative = _speculative; |
3900 return make(ptr, (ptr == Constant ? const_oop() : NULL), | |
17731
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roland
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|
3901 _ary, _klass, _klass_is_exact, offset, instance_id, speculative, _inline_depth); |
223 | 3902 } |
0 | 3903 default: ShouldNotReachHere(); |
3904 } | |
3905 } | |
3906 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6198
diff
changeset
|
3907 case MetadataPtr: |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3908 case KlassPtr: |
0 | 3909 case RawPtr: return TypePtr::BOTTOM; |
3910 | |
3911 case AryPtr: { // Meeting 2 references? | |
3912 const TypeAryPtr *tap = t->is_aryptr(); | |
3913 int off = meet_offset(tap->offset()); | |
17671
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roland
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diff
changeset
|
3914 const TypeAry *tary = _ary->meet_speculative(tap->_ary)->is_ary(); |
0 | 3915 PTR ptr = meet_ptr(tap->ptr()); |
223 | 3916 int instance_id = meet_instance_id(tap->instance_id()); |
17671
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17619
diff
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|
3917 const TypeOopPtr* speculative = xmeet_speculative(tap); |
17731
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|
3918 int depth = meet_inline_depth(tap->inline_depth()); |
0 | 3919 ciKlass* lazy_klass = NULL; |
3920 if (tary->_elem->isa_int()) { | |
3921 // Integral array element types have irrelevant lattice relations. | |
3922 // It is the klass that determines array layout, not the element type. | |
3923 if (_klass == NULL) | |
3924 lazy_klass = tap->_klass; | |
3925 else if (tap->_klass == NULL || tap->_klass == _klass) { | |
3926 lazy_klass = _klass; | |
3927 } else { | |
3928 // Something like byte[int+] meets char[int+]. | |
3929 // This must fall to bottom, not (int[-128..65535])[int+]. | |
247 | 3930 instance_id = InstanceBot; |
12190
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|
3931 tary = TypeAry::make(Type::BOTTOM, tary->_size, tary->_stable); |
0 | 3932 } |
2351 | 3933 } else // Non integral arrays. |
17619 | 3934 // Must fall to bottom if exact klasses in upper lattice |
3935 // are not equal or super klass is exact. | |
3936 if ((above_centerline(ptr) || ptr == Constant) && klass() != tap->klass() && | |
3937 // meet with top[] and bottom[] are processed further down: | |
3938 tap->_klass != NULL && this->_klass != NULL && | |
3939 // both are exact and not equal: | |
3940 ((tap->_klass_is_exact && this->_klass_is_exact) || | |
3941 // 'tap' is exact and super or unrelated: | |
3942 (tap->_klass_is_exact && !tap->klass()->is_subtype_of(klass())) || | |
3943 // 'this' is exact and super or unrelated: | |
3944 (this->_klass_is_exact && !klass()->is_subtype_of(tap->klass())))) { | |
12190
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|
3945 tary = TypeAry::make(Type::BOTTOM, tary->_size, tary->_stable); |
12966 | 3946 return make(NotNull, NULL, tary, lazy_klass, false, off, InstanceBot); |
0 | 3947 } |
2351 | 3948 |
1765
114e6b93e9e1
6980978: assert(mt == t->xmeet(this)) failed: meet not commutative
kvn
parents:
1761
diff
changeset
|
3949 bool xk = false; |
0 | 3950 switch (tap->ptr()) { |
3951 case AnyNull: | |
3952 case TopPTR: | |
3953 // Compute new klass on demand, do not use tap->_klass | |
12966 | 3954 if (below_centerline(this->_ptr)) { |
3955 xk = this->_klass_is_exact; | |
3956 } else { | |
3957 xk = (tap->_klass_is_exact | this->_klass_is_exact); | |
3958 } | |
17731
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
3959 return make(ptr, const_oop(), tary, lazy_klass, xk, off, instance_id, speculative, depth); |
0 | 3960 case Constant: { |
3961 ciObject* o = const_oop(); | |
3962 if( _ptr == Constant ) { | |
3963 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
|
3964 xk = (klass() == tap->klass()); |
0 | 3965 ptr = NotNull; |
3966 o = NULL; | |
247 | 3967 instance_id = InstanceBot; |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
958
diff
changeset
|
3968 } else { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
958
diff
changeset
|
3969 xk = true; |
0 | 3970 } |
12966 | 3971 } else if(above_centerline(_ptr)) { |
0 | 3972 o = tap->const_oop(); |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
958
diff
changeset
|
3973 xk = true; |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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958
diff
changeset
|
3974 } else { |
1765
114e6b93e9e1
6980978: assert(mt == t->xmeet(this)) failed: meet not commutative
kvn
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1761
diff
changeset
|
3975 // Only precise for identical arrays |
114e6b93e9e1
6980978: assert(mt == t->xmeet(this)) failed: meet not commutative
kvn
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1761
diff
changeset
|
3976 xk = this->_klass_is_exact && (klass() == tap->klass()); |
0 | 3977 } |
17731
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roland
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17726
diff
changeset
|
3978 return TypeAryPtr::make(ptr, o, tary, lazy_klass, xk, off, instance_id, speculative, depth); |
0 | 3979 } |
3980 case NotNull: | |
3981 case BotPTR: | |
3982 // Compute new klass on demand, do not use tap->_klass | |
3983 if (above_centerline(this->_ptr)) | |
3984 xk = tap->_klass_is_exact; | |
3985 else xk = (tap->_klass_is_exact & this->_klass_is_exact) && | |
3986 (klass() == tap->klass()); // Only precise for identical arrays | |
17731
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roland
parents:
17726
diff
changeset
|
3987 return TypeAryPtr::make(ptr, NULL, tary, lazy_klass, xk, off, instance_id, speculative, depth); |
0 | 3988 default: ShouldNotReachHere(); |
3989 } | |
3990 } | |
3991 | |
3992 // All arrays inherit from Object class | |
3993 case InstPtr: { | |
3994 const TypeInstPtr *tp = t->is_instptr(); | |
3995 int offset = meet_offset(tp->offset()); | |
3996 PTR ptr = meet_ptr(tp->ptr()); | |
223 | 3997 int instance_id = meet_instance_id(tp->instance_id()); |
17671
de95063c0e34
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17619
diff
changeset
|
3998 const TypeOopPtr* speculative = xmeet_speculative(tp); |
17731
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17726
diff
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|
3999 int depth = meet_inline_depth(tp->inline_depth()); |
0 | 4000 switch (ptr) { |
4001 case TopPTR: | |
4002 case AnyNull: // Fall 'down' to dual of object klass | |
12966 | 4003 // For instances when a subclass meets a superclass we fall |
4004 // below the centerline when the superclass is exact. We need to | |
4005 // do the same here. | |
4006 if (tp->klass()->equals(ciEnv::current()->Object_klass()) && !tp->klass_is_exact()) { | |
17731
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roland
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17726
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|
4007 return TypeAryPtr::make(ptr, _ary, _klass, _klass_is_exact, offset, instance_id, speculative, depth); |
0 | 4008 } else { |
4009 // cannot subclass, so the meet has to fall badly below the centerline | |
4010 ptr = NotNull; | |
223 | 4011 instance_id = InstanceBot; |
17731
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roland
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17726
diff
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|
4012 return TypeInstPtr::make(ptr, ciEnv::current()->Object_klass(), false, NULL,offset, instance_id, speculative, depth); |
0 | 4013 } |
4014 case Constant: | |
4015 case NotNull: | |
4016 case BotPTR: // Fall down to object klass | |
4017 // LCA is object_klass, but if we subclass from the top we can do better | |
4018 if (above_centerline(tp->ptr())) { | |
4019 // If 'tp' is above the centerline and it is Object class | |
605 | 4020 // then we can subclass in the Java class hierarchy. |
12966 | 4021 // For instances when a subclass meets a superclass we fall |
4022 // below the centerline when the superclass is exact. We need | |
4023 // to do the same here. | |
4024 if (tp->klass()->equals(ciEnv::current()->Object_klass()) && !tp->klass_is_exact()) { | |
0 | 4025 // that is, my array type is a subtype of 'tp' klass |
12966 | 4026 return make(ptr, (ptr == Constant ? const_oop() : NULL), |
17731
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roland
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17726
diff
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|
4027 _ary, _klass, _klass_is_exact, offset, instance_id, speculative, depth); |
0 | 4028 } |
4029 } | |
4030 // The other case cannot happen, since t cannot be a subtype of an array. | |
4031 // The meet falls down to Object class below centerline. | |
4032 if( ptr == Constant ) | |
4033 ptr = NotNull; | |
223 | 4034 instance_id = InstanceBot; |
17731
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roland
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17726
diff
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|
4035 return TypeInstPtr::make(ptr, ciEnv::current()->Object_klass(), false, NULL,offset, instance_id, speculative, depth); |
0 | 4036 default: typerr(t); |
4037 } | |
4038 } | |
4039 } | |
4040 return this; // Lint noise | |
4041 } | |
4042 | |
4043 //------------------------------xdual------------------------------------------ | |
4044 // Dual: compute field-by-field dual | |
4045 const Type *TypeAryPtr::xdual() const { | |
17731
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roland
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17726
diff
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|
4046 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 | 4047 } |
4048 | |
820
915cc9c5ebc6
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kvn
parents:
628
diff
changeset
|
4049 //----------------------interface_vs_oop--------------------------------------- |
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4050 #ifdef ASSERT |
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4051 bool TypeAryPtr::interface_vs_oop(const Type *t) const { |
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4052 const TypeAryPtr* t_aryptr = t->isa_aryptr(); |
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4053 if (t_aryptr) { |
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4054 return _ary->interface_vs_oop(t_aryptr->_ary); |
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4055 } |
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4056 return false; |
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4057 } |
915cc9c5ebc6
6837094: False positive for "meet not symmetric" failure
kvn
parents:
628
diff
changeset
|
4058 #endif |
915cc9c5ebc6
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kvn
parents:
628
diff
changeset
|
4059 |
0 | 4060 //------------------------------dump2------------------------------------------ |
4061 #ifndef PRODUCT | |
4062 void TypeAryPtr::dump2( Dict &d, uint depth, outputStream *st ) const { | |
4063 _ary->dump2(d,depth,st); | |
4064 switch( _ptr ) { | |
4065 case Constant: | |
4066 const_oop()->print(st); | |
4067 break; | |
4068 case BotPTR: | |
4069 if (!WizardMode && !Verbose) { | |
4070 if( _klass_is_exact ) st->print(":exact"); | |
4071 break; | |
4072 } | |
4073 case TopPTR: | |
4074 case AnyNull: | |
4075 case NotNull: | |
4076 st->print(":%s", ptr_msg[_ptr]); | |
4077 if( _klass_is_exact ) st->print(":exact"); | |
4078 break; | |
4079 } | |
4080 | |
64
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4081 if( _offset != 0 ) { |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4082 int header_size = objArrayOopDesc::header_size() * wordSize; |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4083 if( _offset == OffsetTop ) st->print("+undefined"); |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4084 else if( _offset == OffsetBot ) st->print("+any"); |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4085 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
|
4086 else { |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4087 BasicType basic_elem_type = elem()->basic_type(); |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4088 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
|
4089 int elem_size = type2aelembytes(basic_elem_type); |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4090 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
|
4091 } |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4092 } |
b8f5ba577b02
6673473: (Escape Analysis) Add the instance's field information to PhiNode
kvn
parents:
0
diff
changeset
|
4093 st->print(" *"); |
223 | 4094 if (_instance_id == InstanceTop) |
4095 st->print(",iid=top"); | |
4096 else if (_instance_id != InstanceBot) | |
0 | 4097 st->print(",iid=%d",_instance_id); |
12966 | 4098 |
17731
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4099 dump_inline_depth(st); |
12966 | 4100 dump_speculative(st); |
0 | 4101 } |
4102 #endif | |
4103 | |
4104 bool TypeAryPtr::empty(void) const { | |
4105 if (_ary->empty()) return true; | |
4106 return TypeOopPtr::empty(); | |
4107 } | |
4108 | |
4109 //------------------------------add_offset------------------------------------- | |
12966 | 4110 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
|
4111 return make(_ptr, _const_oop, _ary, _klass, _klass_is_exact, xadd_offset(offset), _instance_id, add_offset_speculative(offset), _inline_depth); |
12966 | 4112 } |
4113 | |
17671
de95063c0e34
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents:
17619
diff
changeset
|
4114 const Type *TypeAryPtr::remove_speculative() const { |
17731
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4115 if (_speculative == NULL) { |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4116 return this; |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4117 } |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4118 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
|
4119 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
|
4120 } |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4121 |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4122 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
|
4123 if (!UseInlineDepthForSpeculativeTypes) { |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4124 return this; |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4125 } |
62825ea7e51f
8031754: Type speculation should favor profile data from outermost inlined method
roland
parents:
17726
diff
changeset
|
4126 return make(_ptr, _const_oop, _ary->remove_speculative()->is_ary(), _klass, _klass_is_exact, _offset, _instance_id, _speculative, depth); |
12966 | 4127 } |
0 | 4128 |
4129 //============================================================================= | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4130 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4131 //------------------------------hash------------------------------------------- |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4132 // Type-specific hashing function. |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4133 int TypeNarrowPtr::hash(void) const { |
827
bf3489cc0aa0
6856025: assert(_base >= OopPtr && _base <= KlassPtr,"Not a Java pointer")
never
parents:
820
diff
changeset
|
4134 return _ptrtype->hash() + 7; |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4135 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4136 |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4137 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
|
4138 return _ptrtype->singleton(); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4139 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4140 |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4141 bool TypeNarrowPtr::empty(void) const { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4142 return _ptrtype->empty(); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4143 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4144 |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4145 intptr_t TypeNarrowPtr::get_con() const { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4146 return _ptrtype->get_con(); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4147 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4148 |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4149 bool TypeNarrowPtr::eq( const Type *t ) const { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4150 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
|
4151 if (tc != NULL) { |
827
bf3489cc0aa0
6856025: assert(_base >= OopPtr && _base <= KlassPtr,"Not a Java pointer")
never
parents:
820
diff
changeset
|
4152 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
|
4153 return false; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4154 } |
827
bf3489cc0aa0
6856025: assert(_base >= OopPtr && _base <= KlassPtr,"Not a Java pointer")
never
parents:
820
diff
changeset
|
4155 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
|
4156 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4157 return false; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4158 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4159 |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4160 const Type *TypeNarrowPtr::xdual() const { // Compute dual right now. |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4161 const TypePtr* odual = _ptrtype->dual()->is_ptr(); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4162 return make_same_narrowptr(odual); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4163 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4164 |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4165 |
17671
de95063c0e34
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents:
17619
diff
changeset
|
4166 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
|
4167 if (isa_same_narrowptr(kills)) { |
17671
de95063c0e34
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents:
17619
diff
changeset
|
4168 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
|
4169 if (ft->empty()) |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4170 return Type::TOP; // Canonical empty value |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4171 if (ft->isa_ptr()) { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4172 return make_hash_same_narrowptr(ft->isa_ptr()); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4173 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4174 return ft; |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4175 } else if (kills->isa_ptr()) { |
17671
de95063c0e34
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents:
17619
diff
changeset
|
4176 const Type* ft = _ptrtype->join_helper(kills, include_speculative); |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4177 if (ft->empty()) |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4178 return Type::TOP; // Canonical empty value |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4179 return ft; |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4180 } else { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4181 return Type::TOP; |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4182 } |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4183 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4184 |
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4185 //------------------------------xmeet------------------------------------------ |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4186 // 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
|
4187 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
|
4188 // 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
|
4189 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
|
4190 |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4191 if (t->base() == base()) { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4192 const Type* result = _ptrtype->xmeet(t->make_ptr()); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4193 if (result->isa_ptr()) { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4194 return make_hash_same_narrowptr(result->is_ptr()); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4195 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4196 return result; |
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 // 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
|
4200 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
|
4201 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4202 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
|
4203 case Long: // reuses local variables |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4204 case FloatTop: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4205 case FloatCon: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4206 case FloatBot: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4207 case DoubleTop: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4208 case DoubleCon: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4209 case DoubleBot: |
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4210 case AnyPtr: |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4211 case RawPtr: |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4212 case OopPtr: |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4213 case InstPtr: |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4214 case AryPtr: |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4215 case MetadataPtr: |
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4216 case KlassPtr: |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
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|
4217 case NarrowOop: |
8e47bac5643a
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|
4218 case NarrowKlass: |
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4219 |
113
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diff
changeset
|
4220 case Bottom: // Ye Olde Default |
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diff
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|
4221 return Type::BOTTOM; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
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|
4222 case Top: |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4223 return this; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
64
diff
changeset
|
4224 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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parents:
64
diff
changeset
|
4225 default: // All else is a mistake |
ba764ed4b6f2
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parents:
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diff
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|
4226 typerr(t); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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diff
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|
4227 |
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diff
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|
4228 } // End of switch |
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4229 |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
247
diff
changeset
|
4230 return this; |
113
ba764ed4b6f2
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parents:
64
diff
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|
4231 } |
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parents:
64
diff
changeset
|
4232 |
6848
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diff
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|
4233 #ifndef PRODUCT |
8e47bac5643a
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parents:
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diff
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|
4234 void TypeNarrowPtr::dump2( Dict & d, uint depth, outputStream *st ) const { |
8e47bac5643a
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roland
parents:
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diff
changeset
|
4235 _ptrtype->dump2(d, depth, st); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
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diff
changeset
|
4236 } |
8e47bac5643a
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roland
parents:
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diff
changeset
|
4237 #endif |
8e47bac5643a
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parents:
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diff
changeset
|
4238 |
8e47bac5643a
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|
4239 const TypeNarrowOop *TypeNarrowOop::BOTTOM; |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
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parents:
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diff
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|
4240 const TypeNarrowOop *TypeNarrowOop::NULL_PTR; |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
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diff
changeset
|
4241 |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4242 |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
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parents:
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diff
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|
4243 const TypeNarrowOop* TypeNarrowOop::make(const TypePtr* type) { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
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diff
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|
4244 return (const TypeNarrowOop*)(new TypeNarrowOop(type))->hashcons(); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
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diff
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|
4245 } |
8e47bac5643a
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diff
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|
4246 |
113
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parents:
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diff
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|
4247 |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
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diff
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|
4248 #ifndef PRODUCT |
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coleenp
parents:
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diff
changeset
|
4249 void TypeNarrowOop::dump2( Dict & d, uint depth, outputStream *st ) const { |
417 | 4250 st->print("narrowoop: "); |
6848
8e47bac5643a
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parents:
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diff
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|
4251 TypeNarrowPtr::dump2(d, depth, st); |
113
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diff
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|
4252 } |
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coleenp
parents:
64
diff
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|
4253 #endif |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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parents:
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diff
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|
4254 |
6848
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parents:
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diff
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|
4255 const TypeNarrowKlass *TypeNarrowKlass::NULL_PTR; |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
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parents:
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diff
changeset
|
4256 |
8e47bac5643a
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parents:
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diff
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|
4257 const TypeNarrowKlass* TypeNarrowKlass::make(const TypePtr* type) { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
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|
4258 return (const TypeNarrowKlass*)(new TypeNarrowKlass(type))->hashcons(); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
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|
4259 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4260 |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4261 #ifndef PRODUCT |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
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|
4262 void TypeNarrowKlass::dump2( Dict & d, uint depth, outputStream *st ) const { |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4263 st->print("narrowklass: "); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
changeset
|
4264 TypeNarrowPtr::dump2(d, depth, st); |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
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|
4265 } |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6735
diff
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|
4266 #endif |
113
ba764ed4b6f2
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64
diff
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|
4267 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6198
diff
changeset
|
4268 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
4269 //------------------------------eq--------------------------------------------- |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
4270 // Structural equality check for Type representations |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4271 bool TypeMetadataPtr::eq( const Type *t ) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
4272 const TypeMetadataPtr *a = (const TypeMetadataPtr*)t; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4273 ciMetadata* one = metadata(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
4274 ciMetadata* two = a->metadata(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4275 if (one == NULL || two == NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
4276 return (one == two) && TypePtr::eq(t); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4277 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4278 return one->equals(two) && TypePtr::eq(t); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4279 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4280 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4281 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
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|
4282 //------------------------------hash------------------------------------------- |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4283 // Type-specific hashing function. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4284 int TypeMetadataPtr::hash(void) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4285 return |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4286 (metadata() ? metadata()->hash() : 0) + |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4287 TypePtr::hash(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4288 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4289 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4290 //------------------------------singleton-------------------------------------- |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
4291 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4292 // constants |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4293 bool TypeMetadataPtr::singleton(void) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4294 // detune optimizer to not generate constant metadta + constant offset as a constant! |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4295 // TopPTR, Null, AnyNull, Constant are all singletons |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4296 return (_offset == 0) && !below_centerline(_ptr); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4297 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4298 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4299 //------------------------------add_offset------------------------------------- |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4300 const TypePtr *TypeMetadataPtr::add_offset( intptr_t offset ) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4301 return make( _ptr, _metadata, xadd_offset(offset)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4302 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4303 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
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|
4304 //-----------------------------filter------------------------------------------ |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4305 // Do not allow interface-vs.-noninterface joins to collapse to top. |
17671
de95063c0e34
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents:
17619
diff
changeset
|
4306 const Type *TypeMetadataPtr::filter_helper(const Type *kills, bool include_speculative) const { |
de95063c0e34
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
roland
parents:
17619
diff
changeset
|
4307 const TypeMetadataPtr* ft = join_helper(kills, include_speculative)->isa_metadataptr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4308 if (ft == NULL || ft->empty()) |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
4309 return Type::TOP; // Canonical empty value |
da91efe96a93
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coleenp
parents:
6198
diff
changeset
|
4310 return ft; |
da91efe96a93
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parents:
6198
diff
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|
4311 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4312 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
4313 //------------------------------get_con---------------------------------------- |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
4314 intptr_t TypeMetadataPtr::get_con() const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
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|
4315 assert( _ptr == Null || _ptr == Constant, "" ); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4316 assert( _offset >= 0, "" ); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4317 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4318 if (_offset != 0) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4319 // After being ported to the compiler interface, the compiler no longer |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4320 // directly manipulates the addresses of oops. Rather, it only has a pointer |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4321 // to a handle at compile time. This handle is embedded in the generated |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4322 // code and dereferenced at the time the nmethod is made. Until that time, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4323 // it is not reasonable to do arithmetic with the addresses of oops (we don't |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4324 // have access to the addresses!). This does not seem to currently happen, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4325 // but this assertion here is to help prevent its occurence. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4326 tty->print_cr("Found oop constant with non-zero offset"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4327 ShouldNotReachHere(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4328 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4329 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4330 return (intptr_t)metadata()->constant_encoding(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4331 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4332 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
4333 //------------------------------cast_to_ptr_type------------------------------- |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
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|
4334 const Type *TypeMetadataPtr::cast_to_ptr_type(PTR ptr) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
4335 if( ptr == _ptr ) return this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6198
diff
changeset
|
4336 return make(ptr, metadata(), _offset); |
da91efe96a93
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coleenp
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6198
diff
changeset
|
4337 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
4338 |
da91efe96a93
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coleenp
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|
4339 //------------------------------meet------------------------------------------- |
da91efe96a93
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coleenp
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diff
changeset
|
4340 // Compute the MEET of two types. It returns a new Type object. |
da91efe96a93
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coleenp
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diff
changeset
|
4341 const Type *TypeMetadataPtr::xmeet( const Type *t ) const { |
da91efe96a93
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coleenp
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diff
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|
4342 // Perform a fast test for common case; meeting the same types together. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6198
diff
changeset
|
4343 if( this == t ) return this; // Meeting same type-rep? |
da91efe96a93
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|
4344 |
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4345 // Current "this->_base" is OopPtr |
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4346 switch (t->base()) { // switch on original type |
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4347 |
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4348 case Int: // Mixing ints & oops happens when javac |
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4349 case Long: // reuses local variables |
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|
4350 case FloatTop: |
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4351 case FloatCon: |
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4352 case FloatBot: |
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4353 case DoubleTop: |
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4354 case DoubleCon: |
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4355 case DoubleBot: |
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4356 case NarrowOop: |
6848
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7054512: Compress class pointers after perm gen removal
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6735
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|
4357 case NarrowKlass: |
6725
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4358 case Bottom: // Ye Olde Default |
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4359 return Type::BOTTOM; |
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|
4360 case Top: |
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4361 return this; |
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|
4362 |
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4363 default: // All else is a mistake |
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|
4364 typerr(t); |
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|
4365 |
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4366 case AnyPtr: { |
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4367 // Found an AnyPtr type vs self-OopPtr type |
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4368 const TypePtr *tp = t->is_ptr(); |
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4369 int offset = meet_offset(tp->offset()); |
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4370 PTR ptr = meet_ptr(tp->ptr()); |
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4371 switch (tp->ptr()) { |
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|
4372 case Null: |
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4373 if (ptr == Null) return TypePtr::make(AnyPtr, ptr, offset); |
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4374 // else fall through: |
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4375 case TopPTR: |
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4376 case AnyNull: { |
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4377 return make(ptr, NULL, offset); |
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|
4378 } |
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|
4379 case BotPTR: |
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|
4380 case NotNull: |
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4381 return TypePtr::make(AnyPtr, ptr, offset); |
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|
4382 default: typerr(t); |
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|
4383 } |
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|
4384 } |
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|
4385 |
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|
4386 case RawPtr: |
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|
4387 case KlassPtr: |
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|
4388 case OopPtr: |
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|
4389 case InstPtr: |
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|
4390 case AryPtr: |
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|
4391 return TypePtr::BOTTOM; // Oop meet raw is not well defined |
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|
4392 |
6728 | 4393 case MetadataPtr: { |
4394 const TypeMetadataPtr *tp = t->is_metadataptr(); | |
4395 int offset = meet_offset(tp->offset()); | |
4396 PTR tptr = tp->ptr(); | |
4397 PTR ptr = meet_ptr(tptr); | |
4398 ciMetadata* md = (tptr == TopPTR) ? metadata() : tp->metadata(); | |
4399 if (tptr == TopPTR || _ptr == TopPTR || | |
4400 metadata()->equals(tp->metadata())) { | |
4401 return make(ptr, md, offset); | |
4402 } | |
4403 // metadata is different | |
4404 if( ptr == Constant ) { // Cannot be equal constants, so... | |
4405 if( tptr == Constant && _ptr != Constant) return t; | |
4406 if( _ptr == Constant && tptr != Constant) return this; | |
4407 ptr = NotNull; // Fall down in lattice | |
4408 } | |
4409 return make(ptr, NULL, offset); | |
6725
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4410 break; |
6728 | 4411 } |
6725
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4412 } // End of switch |
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|
4413 return this; // Return the double constant |
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|
4414 } |
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|
4415 |
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|
4416 |
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|
4417 //------------------------------xdual------------------------------------------ |
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|
4418 // Dual of a pure metadata pointer. |
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|
4419 const Type *TypeMetadataPtr::xdual() const { |
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|
4420 return new TypeMetadataPtr(dual_ptr(), metadata(), dual_offset()); |
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|
4421 } |
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|
4422 |
da91efe96a93
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|
4423 //------------------------------dump2------------------------------------------ |
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|
4424 #ifndef PRODUCT |
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|
4425 void TypeMetadataPtr::dump2( Dict &d, uint depth, outputStream *st ) const { |
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|
4426 st->print("metadataptr:%s", ptr_msg[_ptr]); |
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|
4427 if( metadata() ) st->print(INTPTR_FORMAT, metadata()); |
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|
4428 switch( _offset ) { |
da91efe96a93
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|
4429 case OffsetTop: st->print("+top"); break; |
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|
4430 case OffsetBot: st->print("+any"); break; |
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|
4431 case 0: break; |
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|
4432 default: st->print("+%d",_offset); break; |
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|
4433 } |
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|
4434 } |
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|
4435 #endif |
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|
4436 |
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|
4437 |
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|
4438 //============================================================================= |
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|
4439 // Convenience common pre-built type. |
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|
4440 const TypeMetadataPtr *TypeMetadataPtr::BOTTOM; |
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|
4441 |
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|
4442 TypeMetadataPtr::TypeMetadataPtr(PTR ptr, ciMetadata* metadata, int offset): |
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4443 TypePtr(MetadataPtr, ptr, offset), _metadata(metadata) { |
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|
4444 } |
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|
4445 |
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4446 const TypeMetadataPtr* TypeMetadataPtr::make(ciMethod* m) { |
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4447 return make(Constant, m, 0); |
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|
4448 } |
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4449 const TypeMetadataPtr* TypeMetadataPtr::make(ciMethodData* m) { |
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|
4450 return make(Constant, m, 0); |
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|
4451 } |
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|
4452 |
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|
4453 //------------------------------make------------------------------------------- |
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|
4454 // Create a meta data constant |
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|
4455 const TypeMetadataPtr *TypeMetadataPtr::make(PTR ptr, ciMetadata* m, int offset) { |
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4456 assert(m == NULL || !m->is_klass(), "wrong type"); |
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|
4457 return (TypeMetadataPtr*)(new TypeMetadataPtr(ptr, m, offset))->hashcons(); |
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|
4458 } |
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|
4459 |
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|
4460 |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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64
diff
changeset
|
4461 //============================================================================= |
0 | 4462 // Convenience common pre-built types. |
4463 | |
4464 // Not-null object klass or below | |
4465 const TypeKlassPtr *TypeKlassPtr::OBJECT; | |
4466 const TypeKlassPtr *TypeKlassPtr::OBJECT_OR_NULL; | |
4467 | |
6725
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|
4468 //------------------------------TypeKlassPtr----------------------------------- |
0 | 4469 TypeKlassPtr::TypeKlassPtr( PTR ptr, ciKlass* klass, int offset ) |
6725
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coleenp
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|
4470 : TypePtr(KlassPtr, ptr, offset), _klass(klass), _klass_is_exact(ptr == Constant) { |
0 | 4471 } |
4472 | |
4473 //------------------------------make------------------------------------------- | |
4474 // ptr to klass 'k', if Constant, or possibly to a sub-klass if not a Constant | |
4475 const TypeKlassPtr *TypeKlassPtr::make( PTR ptr, ciKlass* k, int offset ) { | |
4476 assert( k != NULL, "Expect a non-NULL klass"); | |
6725
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|
4477 assert(k->is_instance_klass() || k->is_array_klass(), "Incorrect type of klass oop"); |
0 | 4478 TypeKlassPtr *r = |
4479 (TypeKlassPtr*)(new TypeKlassPtr(ptr, k, offset))->hashcons(); | |
4480 | |
4481 return r; | |
4482 } | |
4483 | |
4484 //------------------------------eq--------------------------------------------- | |
4485 // Structural equality check for Type representations | |
4486 bool TypeKlassPtr::eq( const Type *t ) const { | |
4487 const TypeKlassPtr *p = t->is_klassptr(); | |
4488 return | |
4489 klass()->equals(p->klass()) && | |
6725
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|
4490 TypePtr::eq(p); |
0 | 4491 } |
4492 | |
4493 //------------------------------hash------------------------------------------- | |
4494 // Type-specific hashing function. | |
4495 int TypeKlassPtr::hash(void) const { | |
6725
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|
4496 return klass()->hash() + TypePtr::hash(); |
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|
4497 } |
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|
4498 |
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|
4499 //------------------------------singleton-------------------------------------- |
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|
4500 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple |
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|
4501 // constants |
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|
4502 bool TypeKlassPtr::singleton(void) const { |
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|
4503 // detune optimizer to not generate constant klass + constant offset as a constant! |
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|
4504 // TopPTR, Null, AnyNull, Constant are all singletons |
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|
4505 return (_offset == 0) && !below_centerline(_ptr); |
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|
4506 } |
0 | 4507 |
13014
6c2f07d1495f
8027140: Assertion in compiler when running bigapps/Kitchensink/stability
roland
parents:
12972
diff
changeset
|
4508 // Do not allow interface-vs.-noninterface joins to collapse to top. |
17671
de95063c0e34
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
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17619
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4509 const Type *TypeKlassPtr::filter_helper(const Type *kills, bool include_speculative) const { |
13014
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4510 // logic here mirrors the one from TypeOopPtr::filter. See comments |
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4511 // there. |
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4512 const Type* ft = join_helper(kills, include_speculative); |
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4513 const TypeKlassPtr* ftkp = ft->isa_klassptr(); |
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4514 const TypeKlassPtr* ktkp = kills->isa_klassptr(); |
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4515 |
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4516 if (ft->empty()) { |
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4517 if (!empty() && ktkp != NULL && ktkp->klass()->is_loaded() && ktkp->klass()->is_interface()) |
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4518 return kills; // Uplift to interface |
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4519 |
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4520 return Type::TOP; // Canonical empty value |
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4521 } |
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4522 |
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4523 // Interface klass type could be exact in opposite to interface type, |
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4524 // return it here instead of incorrect Constant ptr J/L/Object (6894807). |
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4525 if (ftkp != NULL && ktkp != NULL && |
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4526 ftkp->is_loaded() && ftkp->klass()->is_interface() && |
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4527 !ftkp->klass_is_exact() && // Keep exact interface klass |
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4528 ktkp->is_loaded() && !ktkp->klass()->is_interface()) { |
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4529 return ktkp->cast_to_ptr_type(ftkp->ptr()); |
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4530 } |
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4531 |
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4532 return ft; |
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4533 } |
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4534 |
1761 | 4535 //----------------------compute_klass------------------------------------------ |
4536 // Compute the defining klass for this class | |
4537 ciKlass* TypeAryPtr::compute_klass(DEBUG_ONLY(bool verify)) const { | |
4538 // Compute _klass based on element type. | |
0 | 4539 ciKlass* k_ary = NULL; |
4540 const TypeInstPtr *tinst; | |
4541 const TypeAryPtr *tary; | |
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4542 const Type* el = elem(); |
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4543 if (el->isa_narrowoop()) { |
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4544 el = el->make_ptr(); |
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4545 } |
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4546 |
0 | 4547 // Get element klass |
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4548 if ((tinst = el->isa_instptr()) != NULL) { |
0 | 4549 // Compute array klass from element klass |
4550 k_ary = ciObjArrayKlass::make(tinst->klass()); | |
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4551 } else if ((tary = el->isa_aryptr()) != NULL) { |
0 | 4552 // Compute array klass from element klass |
4553 ciKlass* k_elem = tary->klass(); | |
4554 // If element type is something like bottom[], k_elem will be null. | |
4555 if (k_elem != NULL) | |
4556 k_ary = ciObjArrayKlass::make(k_elem); | |
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4557 } else if ((el->base() == Type::Top) || |
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4558 (el->base() == Type::Bottom)) { |
0 | 4559 // element type of Bottom occurs from meet of basic type |
4560 // and object; Top occurs when doing join on Bottom. | |
4561 // Leave k_ary at NULL. | |
4562 } else { | |
4563 // Cannot compute array klass directly from basic type, | |
4564 // since subtypes of TypeInt all have basic type T_INT. | |
1761 | 4565 #ifdef ASSERT |
4566 if (verify && el->isa_int()) { | |
4567 // Check simple cases when verifying klass. | |
4568 BasicType bt = T_ILLEGAL; | |
4569 if (el == TypeInt::BYTE) { | |
4570 bt = T_BYTE; | |
4571 } else if (el == TypeInt::SHORT) { | |
4572 bt = T_SHORT; | |
4573 } else if (el == TypeInt::CHAR) { | |
4574 bt = T_CHAR; | |
4575 } else if (el == TypeInt::INT) { | |
4576 bt = T_INT; | |
4577 } else { | |
4578 return _klass; // just return specified klass | |
4579 } | |
4580 return ciTypeArrayKlass::make(bt); | |
4581 } | |
4582 #endif | |
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4583 assert(!el->isa_int(), |
0 | 4584 "integral arrays must be pre-equipped with a class"); |
4585 // Compute array klass directly from basic type | |
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4586 k_ary = ciTypeArrayKlass::make(el->basic_type()); |
0 | 4587 } |
1761 | 4588 return k_ary; |
4589 } | |
4590 | |
4591 //------------------------------klass------------------------------------------ | |
4592 // Return the defining klass for this class | |
4593 ciKlass* TypeAryPtr::klass() const { | |
4594 if( _klass ) return _klass; // Return cached value, if possible | |
4595 | |
4596 // Oops, need to compute _klass and cache it | |
4597 ciKlass* k_ary = compute_klass(); | |
0 | 4598 |
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4599 if( this != TypeAryPtr::OOPS && this->dual() != TypeAryPtr::OOPS ) { |
0 | 4600 // The _klass field acts as a cache of the underlying |
4601 // ciKlass for this array type. In order to set the field, | |
4602 // we need to cast away const-ness. | |
4603 // | |
4604 // IMPORTANT NOTE: we *never* set the _klass field for the | |
4605 // type TypeAryPtr::OOPS. This Type is shared between all | |
4606 // active compilations. However, the ciKlass which represents | |
4607 // this Type is *not* shared between compilations, so caching | |
4608 // this value would result in fetching a dangling pointer. | |
4609 // | |
4610 // Recomputing the underlying ciKlass for each request is | |
4611 // a bit less efficient than caching, but calls to | |
4612 // TypeAryPtr::OOPS->klass() are not common enough to matter. | |
4613 ((TypeAryPtr*)this)->_klass = k_ary; | |
163 | 4614 if (UseCompressedOops && k_ary != NULL && k_ary->is_obj_array_klass() && |
4615 _offset != 0 && _offset != arrayOopDesc::length_offset_in_bytes()) { | |
4616 ((TypeAryPtr*)this)->_is_ptr_to_narrowoop = true; | |
4617 } | |
4618 } | |
0 | 4619 return k_ary; |
4620 } | |
4621 | |
4622 | |
4623 //------------------------------add_offset------------------------------------- | |
4624 // Access internals of klass object | |
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4625 const TypePtr *TypeKlassPtr::add_offset( intptr_t offset ) const { |
0 | 4626 return make( _ptr, klass(), xadd_offset(offset) ); |
4627 } | |
4628 | |
4629 //------------------------------cast_to_ptr_type------------------------------- | |
4630 const Type *TypeKlassPtr::cast_to_ptr_type(PTR ptr) const { | |
557
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|
4631 assert(_base == KlassPtr, "subclass must override cast_to_ptr_type"); |
0 | 4632 if( ptr == _ptr ) return this; |
4633 return make(ptr, _klass, _offset); | |
4634 } | |
4635 | |
4636 | |
4637 //-----------------------------cast_to_exactness------------------------------- | |
4638 const Type *TypeKlassPtr::cast_to_exactness(bool klass_is_exact) const { | |
4639 if( klass_is_exact == _klass_is_exact ) return this; | |
4640 if (!UseExactTypes) return this; | |
4641 return make(klass_is_exact ? Constant : NotNull, _klass, _offset); | |
4642 } | |
4643 | |
4644 | |
4645 //-----------------------------as_instance_type-------------------------------- | |
4646 // Corresponding type for an instance of the given class. | |
4647 // It will be NotNull, and exact if and only if the klass type is exact. | |
4648 const TypeOopPtr* TypeKlassPtr::as_instance_type() const { | |
4649 ciKlass* k = klass(); | |
4650 bool xk = klass_is_exact(); | |
4651 //return TypeInstPtr::make(TypePtr::NotNull, k, xk, NULL, 0); | |
4652 const TypeOopPtr* toop = TypeOopPtr::make_from_klass_raw(k); | |
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4653 guarantee(toop != NULL, "need type for given klass"); |
0 | 4654 toop = toop->cast_to_ptr_type(TypePtr::NotNull)->is_oopptr(); |
4655 return toop->cast_to_exactness(xk)->is_oopptr(); | |
4656 } | |
4657 | |
4658 | |
4659 //------------------------------xmeet------------------------------------------ | |
4660 // Compute the MEET of two types, return a new Type object. | |
4661 const Type *TypeKlassPtr::xmeet( const Type *t ) const { | |
4662 // Perform a fast test for common case; meeting the same types together. | |
4663 if( this == t ) return this; // Meeting same type-rep? | |
4664 | |
4665 // Current "this->_base" is Pointer | |
4666 switch (t->base()) { // switch on original type | |
4667 | |
4668 case Int: // Mixing ints & oops happens when javac | |
4669 case Long: // reuses local variables | |
4670 case FloatTop: | |
4671 case FloatCon: | |
4672 case FloatBot: | |
4673 case DoubleTop: | |
4674 case DoubleCon: | |
4675 case DoubleBot: | |
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4676 case NarrowOop: |
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4677 case NarrowKlass: |
0 | 4678 case Bottom: // Ye Olde Default |
4679 return Type::BOTTOM; | |
4680 case Top: | |
4681 return this; | |
4682 | |
4683 default: // All else is a mistake | |
4684 typerr(t); | |
4685 | |
4686 case AnyPtr: { // Meeting to AnyPtrs | |
4687 // Found an AnyPtr type vs self-KlassPtr type | |
4688 const TypePtr *tp = t->is_ptr(); | |
4689 int offset = meet_offset(tp->offset()); | |
4690 PTR ptr = meet_ptr(tp->ptr()); | |
4691 switch (tp->ptr()) { | |
4692 case TopPTR: | |
4693 return this; | |
4694 case Null: | |
4695 if( ptr == Null ) return TypePtr::make( AnyPtr, ptr, offset ); | |
4696 case AnyNull: | |
4697 return make( ptr, klass(), offset ); | |
4698 case BotPTR: | |
4699 case NotNull: | |
4700 return TypePtr::make(AnyPtr, ptr, offset); | |
4701 default: typerr(t); | |
4702 } | |
4703 } | |
4704 | |
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4705 case RawPtr: |
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4706 case MetadataPtr: |
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4707 case OopPtr: |
0 | 4708 case AryPtr: // Meet with AryPtr |
4709 case InstPtr: // Meet with InstPtr | |
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4710 return TypePtr::BOTTOM; |
0 | 4711 |
4712 // | |
4713 // A-top } | |
4714 // / | \ } Tops | |
4715 // B-top A-any C-top } | |
4716 // | / | \ | } Any-nulls | |
4717 // B-any | C-any } | |
4718 // | | | | |
4719 // B-con A-con C-con } constants; not comparable across classes | |
4720 // | | | | |
4721 // B-not | C-not } | |
4722 // | \ | / | } not-nulls | |
4723 // B-bot A-not C-bot } | |
4724 // \ | / } Bottoms | |
4725 // A-bot } | |
4726 // | |
4727 | |
4728 case KlassPtr: { // Meet two KlassPtr types | |
4729 const TypeKlassPtr *tkls = t->is_klassptr(); | |
4730 int off = meet_offset(tkls->offset()); | |
4731 PTR ptr = meet_ptr(tkls->ptr()); | |
4732 | |
4733 // Check for easy case; klasses are equal (and perhaps not loaded!) | |
4734 // If we have constants, then we created oops so classes are loaded | |
4735 // and we can handle the constants further down. This case handles | |
4736 // not-loaded classes | |
4737 if( ptr != Constant && tkls->klass()->equals(klass()) ) { | |
4738 return make( ptr, klass(), off ); | |
4739 } | |
4740 | |
4741 // Classes require inspection in the Java klass hierarchy. Must be loaded. | |
4742 ciKlass* tkls_klass = tkls->klass(); | |
4743 ciKlass* this_klass = this->klass(); | |
4744 assert( tkls_klass->is_loaded(), "This class should have been loaded."); | |
4745 assert( this_klass->is_loaded(), "This class should have been loaded."); | |
4746 | |
4747 // If 'this' type is above the centerline and is a superclass of the | |
4748 // other, we can treat 'this' as having the same type as the other. | |
4749 if ((above_centerline(this->ptr())) && | |
4750 tkls_klass->is_subtype_of(this_klass)) { | |
4751 this_klass = tkls_klass; | |
4752 } | |
4753 // If 'tinst' type is above the centerline and is a superclass of the | |
4754 // other, we can treat 'tinst' as having the same type as the other. | |
4755 if ((above_centerline(tkls->ptr())) && | |
4756 this_klass->is_subtype_of(tkls_klass)) { | |
4757 tkls_klass = this_klass; | |
4758 } | |
4759 | |
4760 // Check for classes now being equal | |
4761 if (tkls_klass->equals(this_klass)) { | |
4762 // If the klasses are equal, the constants may still differ. Fall to | |
4763 // NotNull if they do (neither constant is NULL; that is a special case | |
4764 // handled elsewhere). | |
4765 if( ptr == Constant ) { | |
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4766 if (this->_ptr == Constant && tkls->_ptr == Constant && |
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4767 this->klass()->equals(tkls->klass())); |
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4768 else if (above_centerline(this->ptr())); |
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4769 else if (above_centerline(tkls->ptr())); |
0 | 4770 else |
4771 ptr = NotNull; | |
4772 } | |
4773 return make( ptr, this_klass, off ); | |
4774 } // Else classes are not equal | |
4775 | |
4776 // Since klasses are different, we require the LCA in the Java | |
4777 // class hierarchy - which means we have to fall to at least NotNull. | |
4778 if( ptr == TopPTR || ptr == AnyNull || ptr == Constant ) | |
4779 ptr = NotNull; | |
4780 // Now we find the LCA of Java classes | |
4781 ciKlass* k = this_klass->least_common_ancestor(tkls_klass); | |
4782 return make( ptr, k, off ); | |
4783 } // End of case KlassPtr | |
4784 | |
4785 } // End of switch | |
4786 return this; // Return the double constant | |
4787 } | |
4788 | |
4789 //------------------------------xdual------------------------------------------ | |
4790 // Dual: compute field-by-field dual | |
4791 const Type *TypeKlassPtr::xdual() const { | |
4792 return new TypeKlassPtr( dual_ptr(), klass(), dual_offset() ); | |
4793 } | |
4794 | |
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4795 //------------------------------get_con---------------------------------------- |
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4796 intptr_t TypeKlassPtr::get_con() const { |
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4797 assert( _ptr == Null || _ptr == Constant, "" ); |
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4798 assert( _offset >= 0, "" ); |
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4799 |
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4800 if (_offset != 0) { |
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4801 // After being ported to the compiler interface, the compiler no longer |
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4802 // directly manipulates the addresses of oops. Rather, it only has a pointer |
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4803 // to a handle at compile time. This handle is embedded in the generated |
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4804 // code and dereferenced at the time the nmethod is made. Until that time, |
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4805 // it is not reasonable to do arithmetic with the addresses of oops (we don't |
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4806 // have access to the addresses!). This does not seem to currently happen, |
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4807 // but this assertion here is to help prevent its occurence. |
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4808 tty->print_cr("Found oop constant with non-zero offset"); |
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4809 ShouldNotReachHere(); |
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4810 } |
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4811 |
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4812 return (intptr_t)klass()->constant_encoding(); |
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4813 } |
0 | 4814 //------------------------------dump2------------------------------------------ |
4815 // Dump Klass Type | |
4816 #ifndef PRODUCT | |
4817 void TypeKlassPtr::dump2( Dict & d, uint depth, outputStream *st ) const { | |
4818 switch( _ptr ) { | |
4819 case Constant: | |
4820 st->print("precise "); | |
4821 case NotNull: | |
4822 { | |
4823 const char *name = klass()->name()->as_utf8(); | |
4824 if( name ) { | |
4825 st->print("klass %s: " INTPTR_FORMAT, name, klass()); | |
4826 } else { | |
4827 ShouldNotReachHere(); | |
4828 } | |
4829 } | |
4830 case BotPTR: | |
4831 if( !WizardMode && !Verbose && !_klass_is_exact ) break; | |
4832 case TopPTR: | |
4833 case AnyNull: | |
4834 st->print(":%s", ptr_msg[_ptr]); | |
4835 if( _klass_is_exact ) st->print(":exact"); | |
4836 break; | |
4837 } | |
4838 | |
4839 if( _offset ) { // Dump offset, if any | |
4840 if( _offset == OffsetBot ) { st->print("+any"); } | |
4841 else if( _offset == OffsetTop ) { st->print("+unknown"); } | |
4842 else { st->print("+%d", _offset); } | |
4843 } | |
4844 | |
4845 st->print(" *"); | |
4846 } | |
4847 #endif | |
4848 | |
4849 | |
4850 | |
4851 //============================================================================= | |
4852 // Convenience common pre-built types. | |
4853 | |
4854 //------------------------------make------------------------------------------- | |
4855 const TypeFunc *TypeFunc::make( const TypeTuple *domain, const TypeTuple *range ) { | |
4856 return (TypeFunc*)(new TypeFunc(domain,range))->hashcons(); | |
4857 } | |
4858 | |
4859 //------------------------------make------------------------------------------- | |
4860 const TypeFunc *TypeFunc::make(ciMethod* method) { | |
4861 Compile* C = Compile::current(); | |
4862 const TypeFunc* tf = C->last_tf(method); // check cache | |
4863 if (tf != NULL) return tf; // The hit rate here is almost 50%. | |
4864 const TypeTuple *domain; | |
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4865 if (method->is_static()) { |
0 | 4866 domain = TypeTuple::make_domain(NULL, method->signature()); |
4867 } else { | |
4868 domain = TypeTuple::make_domain(method->holder(), method->signature()); | |
4869 } | |
4870 const TypeTuple *range = TypeTuple::make_range(method->signature()); | |
4871 tf = TypeFunc::make(domain, range); | |
4872 C->set_last_tf(method, tf); // fill cache | |
4873 return tf; | |
4874 } | |
4875 | |
4876 //------------------------------meet------------------------------------------- | |
4877 // Compute the MEET of two types. It returns a new Type object. | |
4878 const Type *TypeFunc::xmeet( const Type *t ) const { | |
4879 // Perform a fast test for common case; meeting the same types together. | |
4880 if( this == t ) return this; // Meeting same type-rep? | |
4881 | |
4882 // Current "this->_base" is Func | |
4883 switch (t->base()) { // switch on original type | |
4884 | |
4885 case Bottom: // Ye Olde Default | |
4886 return t; | |
4887 | |
4888 default: // All else is a mistake | |
4889 typerr(t); | |
4890 | |
4891 case Top: | |
4892 break; | |
4893 } | |
4894 return this; // Return the double constant | |
4895 } | |
4896 | |
4897 //------------------------------xdual------------------------------------------ | |
4898 // Dual: compute field-by-field dual | |
4899 const Type *TypeFunc::xdual() const { | |
4900 return this; | |
4901 } | |
4902 | |
4903 //------------------------------eq--------------------------------------------- | |
4904 // Structural equality check for Type representations | |
4905 bool TypeFunc::eq( const Type *t ) const { | |
4906 const TypeFunc *a = (const TypeFunc*)t; | |
4907 return _domain == a->_domain && | |
4908 _range == a->_range; | |
4909 } | |
4910 | |
4911 //------------------------------hash------------------------------------------- | |
4912 // Type-specific hashing function. | |
4913 int TypeFunc::hash(void) const { | |
4914 return (intptr_t)_domain + (intptr_t)_range; | |
4915 } | |
4916 | |
4917 //------------------------------dump2------------------------------------------ | |
4918 // Dump Function Type | |
4919 #ifndef PRODUCT | |
4920 void TypeFunc::dump2( Dict &d, uint depth, outputStream *st ) const { | |
4921 if( _range->_cnt <= Parms ) | |
4922 st->print("void"); | |
4923 else { | |
4924 uint i; | |
4925 for (i = Parms; i < _range->_cnt-1; i++) { | |
4926 _range->field_at(i)->dump2(d,depth,st); | |
4927 st->print("/"); | |
4928 } | |
4929 _range->field_at(i)->dump2(d,depth,st); | |
4930 } | |
4931 st->print(" "); | |
4932 st->print("( "); | |
4933 if( !depth || d[this] ) { // Check for recursive dump | |
4934 st->print("...)"); | |
4935 return; | |
4936 } | |
4937 d.Insert((void*)this,(void*)this); // Stop recursion | |
4938 if (Parms < _domain->_cnt) | |
4939 _domain->field_at(Parms)->dump2(d,depth-1,st); | |
4940 for (uint i = Parms+1; i < _domain->_cnt; i++) { | |
4941 st->print(", "); | |
4942 _domain->field_at(i)->dump2(d,depth-1,st); | |
4943 } | |
4944 st->print(" )"); | |
4945 } | |
4946 #endif | |
4947 | |
4948 //------------------------------singleton-------------------------------------- | |
4949 // TRUE if Type is a singleton type, FALSE otherwise. Singletons are simple | |
4950 // constants (Ldi nodes). Singletons are integer, float or double constants | |
4951 // or a single symbol. | |
4952 bool TypeFunc::singleton(void) const { | |
4953 return false; // Never a singleton | |
4954 } | |
4955 | |
4956 bool TypeFunc::empty(void) const { | |
4957 return false; // Never empty | |
4958 } | |
4959 | |
4960 | |
4961 BasicType TypeFunc::return_type() const{ | |
4962 if (range()->cnt() == TypeFunc::Parms) { | |
4963 return T_VOID; | |
4964 } | |
4965 return range()->field_at(TypeFunc::Parms)->basic_type(); | |
4966 } |