/* * 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 SharkTopLevelBlock; class DeferredZeroCheck; class SharkFunction : public SharkTargetInvariants { friend class SharkStackWithNormalFrame; public: static llvm::Function* build(ciEnv* env, SharkBuilder* builder, ciTypeFlow* flow, const char* name) { SharkFunction function(env, builder, flow, name); return function.function(); } private: SharkFunction(ciEnv* env, SharkBuilder* builder, ciTypeFlow* flow, const char* name) : SharkTargetInvariants(env, builder, flow) { initialize(name); } private: void initialize(const char* name); private: llvm::Function* _function; SharkTopLevelBlock** _blocks; GrowableArray _deferred_zero_checks; SharkStack* _stack; public: llvm::Function* function() const { return _function; } int block_count() const { return flow()->block_count(); } SharkTopLevelBlock* block(int i) const { assert(i < block_count(), "should be"); return _blocks[i]; } GrowableArray* deferred_zero_checks() { return &_deferred_zero_checks; } SharkStack* stack() const { return _stack; } // On-stack replacement private: bool is_osr() const { return flow()->is_osr_flow(); } const llvm::FunctionType* entry_point_type() const { if (is_osr()) return SharkType::osr_entry_point_type(); else return SharkType::entry_point_type(); } // Block management private: llvm::BasicBlock* _block_insertion_point; void set_block_insertion_point(llvm::BasicBlock* block_insertion_point) { _block_insertion_point = block_insertion_point; } llvm::BasicBlock* block_insertion_point() const { return _block_insertion_point; } public: llvm::BasicBlock* CreateBlock(const char* name = "") const { return llvm::BasicBlock::Create( SharkContext::current(), name, function(), block_insertion_point()); } // Deferred zero checks public: void add_deferred_zero_check(SharkTopLevelBlock* block, SharkValue* value); private: void do_deferred_zero_checks(); };