1 /*
2 * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
223
224 // Split instance field load through Phi.
225 Node* split_through_phi(PhaseGVN *phase);
226
227 // Recover original value from boxed values
228 Node *eliminate_autobox(PhaseGVN *phase);
229
230 // Compute a new Type for this node. Basically we just do the pre-check,
231 // then call the virtual add() to set the type.
232 virtual const Type* Value(PhaseGVN* phase) const;
233
234 // Common methods for LoadKlass and LoadNKlass nodes.
235 const Type* klass_value_common(PhaseGVN* phase) const;
236 Node* klass_identity_common(PhaseGVN* phase);
237
238 virtual uint ideal_reg() const;
239 virtual const Type *bottom_type() const;
240 // Following method is copied from TypeNode:
241 void set_type(const Type* t) {
242 assert(t != NULL, "sanity");
243 debug_only(uint check_hash = (VerifyHashTableKeys && _hash_lock) ? hash() : NO_HASH);
244 *(const Type**)&_type = t; // cast away const-ness
245 // If this node is in the hash table, make sure it doesn't need a rehash.
246 assert(check_hash == NO_HASH || check_hash == hash(), "type change must preserve hash code");
247 }
248 const Type* type() const { assert(_type != NULL, "sanity"); return _type; };
249
250 // Do not match memory edge
251 virtual uint match_edge(uint idx) const;
252
253 // Map a load opcode to its corresponding store opcode.
254 virtual int store_Opcode() const = 0;
255
256 // Check if the load's memory input is a Phi node with the same control.
257 bool is_instance_field_load_with_local_phi(Node* ctrl);
258
259 Node* convert_to_unsigned_load(PhaseGVN& gvn);
260 Node* convert_to_signed_load(PhaseGVN& gvn);
261
262 #ifndef PRODUCT
263 virtual void dump_spec(outputStream *st) const;
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1 /*
2 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
223
224 // Split instance field load through Phi.
225 Node* split_through_phi(PhaseGVN *phase);
226
227 // Recover original value from boxed values
228 Node *eliminate_autobox(PhaseGVN *phase);
229
230 // Compute a new Type for this node. Basically we just do the pre-check,
231 // then call the virtual add() to set the type.
232 virtual const Type* Value(PhaseGVN* phase) const;
233
234 // Common methods for LoadKlass and LoadNKlass nodes.
235 const Type* klass_value_common(PhaseGVN* phase) const;
236 Node* klass_identity_common(PhaseGVN* phase);
237
238 virtual uint ideal_reg() const;
239 virtual const Type *bottom_type() const;
240 // Following method is copied from TypeNode:
241 void set_type(const Type* t) {
242 assert(t != NULL, "sanity");
243 debug_only(uint check_hash = (VerifyHashTableKeys && _hash_lock) ? hash() : (uint) NO_HASH);
244 *(const Type**)&_type = t; // cast away const-ness
245 // If this node is in the hash table, make sure it doesn't need a rehash.
246 assert(check_hash == NO_HASH || check_hash == hash(), "type change must preserve hash code");
247 }
248 const Type* type() const { assert(_type != NULL, "sanity"); return _type; };
249
250 // Do not match memory edge
251 virtual uint match_edge(uint idx) const;
252
253 // Map a load opcode to its corresponding store opcode.
254 virtual int store_Opcode() const = 0;
255
256 // Check if the load's memory input is a Phi node with the same control.
257 bool is_instance_field_load_with_local_phi(Node* ctrl);
258
259 Node* convert_to_unsigned_load(PhaseGVN& gvn);
260 Node* convert_to_signed_load(PhaseGVN& gvn);
261
262 #ifndef PRODUCT
263 virtual void dump_spec(outputStream *st) const;
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