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src/hotspot/share/c1/c1_ValueStack.cpp

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  1 /*
  2  * Copyright (c) 1999, 2016, 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  *
 23  */
 24 
 25 #include "precompiled.hpp"
 26 #include "c1/c1_IR.hpp"
 27 #include "c1/c1_InstructionPrinter.hpp"
 28 #include "c1/c1_ValueStack.hpp"
 29 
 30 
 31 // Implementation of ValueStack
 32 
 33 ValueStack::ValueStack(IRScope* scope, ValueStack* caller_state)
 34 : _scope(scope)
 35 , _caller_state(caller_state)
 36 , _bci(-99)
 37 , _kind(Parsing)

 38 , _locals(scope->method()->max_locals(), scope->method()->max_locals(), NULL)
 39 , _stack(scope->method()->max_stack())
 40 , _locks(NULL)
 41 {
 42   verify();
 43 }
 44 
 45 ValueStack::ValueStack(ValueStack* copy_from, Kind kind, int bci)
 46   : _scope(copy_from->scope())
 47   , _caller_state(copy_from->caller_state())
 48   , _bci(bci)
 49   , _kind(kind)

 50   , _locals(copy_from->locals_size_for_copy(kind))
 51   , _stack(copy_from->stack_size_for_copy(kind))
 52   , _locks(copy_from->locks_size() == 0 ? NULL : new Values(copy_from->locks_size()))
 53 {
 54   assert(kind != EmptyExceptionState || !Compilation::current()->env()->should_retain_local_variables(), "need locals");
 55   if (kind != EmptyExceptionState) {
 56     _locals.appendAll(&copy_from->_locals);
 57   }
 58 
 59   if (kind != ExceptionState && kind != EmptyExceptionState) {
 60     _stack.appendAll(&copy_from->_stack);
 61   }
 62 
 63   if (copy_from->locks_size() > 0) {
 64     _locks->appendAll(copy_from->_locks);
 65   }
 66 
 67   verify();
 68 }
 69 

175   return num_locks;
176 }
177 
178 int ValueStack::lock(Value obj) {
179   if (_locks == NULL) {
180     _locks = new Values();
181   }
182   _locks->push(obj);
183   int num_locks = total_locks_size();
184   scope()->set_min_number_of_locks(num_locks);
185   return num_locks - 1;
186 }
187 
188 
189 int ValueStack::unlock() {
190   assert(locks_size() > 0, "sanity");
191   _locks->pop();
192   return total_locks_size();
193 }
194 
195 
196 void ValueStack::setup_phi_for_stack(BlockBegin* b, int index) {
197   assert(stack_at(index)->as_Phi() == NULL || stack_at(index)->as_Phi()->block() != b, "phi function already created");
198 
199   ValueType* t = stack_at(index)->type();
200   Value phi = new Phi(t, b, -index - 1);
201   _stack.at_put(index, phi);
202 
203   assert(!t->is_double_word() || _stack.at(index + 1) == NULL, "hi-word of doubleword value must be NULL");
204 }
205 
206 void ValueStack::setup_phi_for_local(BlockBegin* b, int index) {
207   assert(local_at(index)->as_Phi() == NULL || local_at(index)->as_Phi()->block() != b, "phi function already created");
208 
209   ValueType* t = local_at(index)->type();
210   Value phi = new Phi(t, b, index);
211   store_local(index, phi);
212 }
213 
214 #ifndef PRODUCT
215 

  1 /*
  2  * Copyright (c) 1999, 2019, 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  *
 23  */
 24 
 25 #include "precompiled.hpp"
 26 #include "c1/c1_IR.hpp"
 27 #include "c1/c1_InstructionPrinter.hpp"
 28 #include "c1/c1_ValueStack.hpp"
 29 
 30 
 31 // Implementation of ValueStack
 32 
 33 ValueStack::ValueStack(IRScope* scope, ValueStack* caller_state)
 34 : _scope(scope)
 35 , _caller_state(caller_state)
 36 , _bci(-99)
 37 , _kind(Parsing)
 38 , _should_reexecute(false)
 39 , _locals(scope->method()->max_locals(), scope->method()->max_locals(), NULL)
 40 , _stack(scope->method()->max_stack())
 41 , _locks(NULL)
 42 {
 43   verify();
 44 }
 45 
 46 ValueStack::ValueStack(ValueStack* copy_from, Kind kind, int bci, bool reexecute)
 47   : _scope(copy_from->scope())
 48   , _caller_state(copy_from->caller_state())
 49   , _bci(bci)
 50   , _kind(kind)
 51   , _should_reexecute(reexecute)
 52   , _locals(copy_from->locals_size_for_copy(kind))
 53   , _stack(copy_from->stack_size_for_copy(kind))
 54   , _locks(copy_from->locks_size() == 0 ? NULL : new Values(copy_from->locks_size()))
 55 {
 56   assert(kind != EmptyExceptionState || !Compilation::current()->env()->should_retain_local_variables(), "need locals");
 57   if (kind != EmptyExceptionState) {
 58     _locals.appendAll(&copy_from->_locals);
 59   }
 60 
 61   if (kind != ExceptionState && kind != EmptyExceptionState) {
 62     _stack.appendAll(&copy_from->_stack);
 63   }
 64 
 65   if (copy_from->locks_size() > 0) {
 66     _locks->appendAll(copy_from->_locks);
 67   }
 68 
 69   verify();
 70 }
 71 

177   return num_locks;
178 }
179 
180 int ValueStack::lock(Value obj) {
181   if (_locks == NULL) {
182     _locks = new Values();
183   }
184   _locks->push(obj);
185   int num_locks = total_locks_size();
186   scope()->set_min_number_of_locks(num_locks);
187   return num_locks - 1;
188 }
189 
190 
191 int ValueStack::unlock() {
192   assert(locks_size() > 0, "sanity");
193   _locks->pop();
194   return total_locks_size();
195 }
196 

197 void ValueStack::setup_phi_for_stack(BlockBegin* b, int index) {
198   assert(stack_at(index)->as_Phi() == NULL || stack_at(index)->as_Phi()->block() != b, "phi function already created");
199 
200   ValueType* t = stack_at(index)->type();
201   Value phi = new Phi(t, b, -index - 1);
202   _stack.at_put(index, phi);
203 
204   assert(!t->is_double_word() || _stack.at(index + 1) == NULL, "hi-word of doubleword value must be NULL");
205 }
206 
207 void ValueStack::setup_phi_for_local(BlockBegin* b, int index) {
208   assert(local_at(index)->as_Phi() == NULL || local_at(index)->as_Phi()->block() != b, "phi function already created");
209 
210   ValueType* t = local_at(index)->type();
211   Value phi = new Phi(t, b, index);
212   store_local(index, phi);
213 }
214 
215 #ifndef PRODUCT
216 
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