Mercurial > hg > truffle
diff src/share/vm/shark/sharkState.hpp @ 1692:d2ede61b7a12
6976186: integrate Shark HotSpot changes
Summary: Shark is a JIT compiler for Zero that uses the LLVM compiler infrastructure.
Reviewed-by: kvn, twisti
Contributed-by: Gary Benson <gbenson@redhat.com>
author | twisti |
---|---|
date | Wed, 11 Aug 2010 05:51:21 -0700 |
parents | |
children | f95d63e2154a |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/shark/sharkState.hpp Wed Aug 11 05:51:21 2010 -0700 @@ -0,0 +1,188 @@ +/* + * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved. + * Copyright 2008, 2009 Red Hat, Inc. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ + +class SharkState : public SharkTargetInvariants { + public: + SharkState(const SharkTargetInvariants* parent) + : SharkTargetInvariants(parent), + _method(NULL), + _oop_tmp(NULL), + _has_safepointed(false) { initialize(NULL); } + + SharkState(const SharkState* state) + : SharkTargetInvariants(state), + _method(state->_method), + _oop_tmp(state->_oop_tmp), + _has_safepointed(state->_has_safepointed) { initialize(state); } + + private: + void initialize(const SharkState* state); + + private: + llvm::Value* _method; + SharkValue** _locals; + SharkValue** _stack; + SharkValue** _sp; + int _num_monitors; + llvm::Value* _oop_tmp; + bool _has_safepointed; + + // Method + public: + llvm::Value** method_addr() { + return &_method; + } + llvm::Value* method() const { + return _method; + } + protected: + void set_method(llvm::Value* method) { + _method = method; + } + + // Local variables + public: + SharkValue** local_addr(int index) const { + assert(index >= 0 && index < max_locals(), "bad local variable index"); + return &_locals[index]; + } + SharkValue* local(int index) const { + return *local_addr(index); + } + void set_local(int index, SharkValue* value) { + *local_addr(index) = value; + } + + // Expression stack + public: + SharkValue** stack_addr(int slot) const { + assert(slot >= 0 && slot < stack_depth(), "bad stack slot"); + return &_sp[-(slot + 1)]; + } + SharkValue* stack(int slot) const { + return *stack_addr(slot); + } + protected: + void set_stack(int slot, SharkValue* value) { + *stack_addr(slot) = value; + } + public: + int stack_depth() const { + return _sp - _stack; + } + void push(SharkValue* value) { + assert(stack_depth() < max_stack(), "stack overrun"); + *(_sp++) = value; + } + SharkValue* pop() { + assert(stack_depth() > 0, "stack underrun"); + return *(--_sp); + } + + // Monitors + public: + int num_monitors() const { + return _num_monitors; + } + void set_num_monitors(int num_monitors) { + _num_monitors = num_monitors; + } + + // Temporary oop slot + public: + llvm::Value** oop_tmp_addr() { + return &_oop_tmp; + } + llvm::Value* oop_tmp() const { + return _oop_tmp; + } + void set_oop_tmp(llvm::Value* oop_tmp) { + _oop_tmp = oop_tmp; + } + + // Safepointed status + public: + bool has_safepointed() const { + return _has_safepointed; + } + void set_has_safepointed(bool has_safepointed) { + _has_safepointed = has_safepointed; + } + + // Comparison + public: + bool equal_to(SharkState* other); + + // Copy and merge + public: + SharkState* copy() const { + return new SharkState(this); + } + void merge(SharkState* other, + llvm::BasicBlock* other_block, + llvm::BasicBlock* this_block); + + // Value replacement + public: + void replace_all(SharkValue* old_value, SharkValue* new_value); +}; + +class SharkTopLevelBlock; + +// SharkNormalEntryState objects are used to create the state +// that the method will be entered with for a normal invocation. +class SharkNormalEntryState : public SharkState { + public: + SharkNormalEntryState(SharkTopLevelBlock* block, + llvm::Value* method); +}; + +// SharkOSREntryState objects are used to create the state +// that the method will be entered with for an OSR invocation. +class SharkOSREntryState : public SharkState { + public: + SharkOSREntryState(SharkTopLevelBlock* block, + llvm::Value* method, + llvm::Value* osr_buf); +}; + +// SharkPHIState objects are used to manage the entry state +// for blocks with more than one entry path or for blocks +// entered from blocks that will be compiled later. +class SharkPHIState : public SharkState { + public: + SharkPHIState(SharkTopLevelBlock* block); + + private: + SharkTopLevelBlock* _block; + + private: + SharkTopLevelBlock* block() const { + return _block; + } + + public: + void add_incoming(SharkState* incoming_state); +};