1 /* 2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2008, 2009 Red Hat, Inc. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #ifndef SHARE_VM_SHARK_SHARKFUNCTION_HPP 27 #define SHARE_VM_SHARK_SHARKFUNCTION_HPP 28 29 #include "ci/ciEnv.hpp" 30 #include "ci/ciStreams.hpp" 31 #include "ci/ciTypeFlow.hpp" 32 #include "memory/allocation.hpp" 33 #include "shark/llvmHeaders.hpp" 34 #include "shark/llvmValue.hpp" 35 #include "shark/sharkBuilder.hpp" 36 #include "shark/sharkContext.hpp" 37 #include "shark/sharkInvariants.hpp" 38 #include "shark/sharkStack.hpp" 39 40 class SharkTopLevelBlock; 41 class DeferredZeroCheck; 42 43 class SharkFunction : public SharkTargetInvariants { 44 friend class SharkStackWithNormalFrame; 45 46 public: 47 static llvm::Function* build(ciEnv* env, 48 SharkBuilder* builder, 49 ciTypeFlow* flow, 50 const char* name) { 51 SharkFunction function(env, builder, flow, name); 52 return function.function(); 53 } 54 55 private: 56 SharkFunction(ciEnv* env, 57 SharkBuilder* builder, 58 ciTypeFlow* flow, 59 const char* name) 60 : SharkTargetInvariants(env, builder, flow) { initialize(name); } 61 62 private: 63 void initialize(const char* name); 64 65 private: 66 llvm::Function* _function; 67 SharkTopLevelBlock** _blocks; 68 GrowableArray<DeferredZeroCheck*> _deferred_zero_checks; 69 SharkStack* _stack; 70 71 public: 72 llvm::Function* function() const { 73 return _function; 74 } 75 int block_count() const { 76 return flow()->block_count(); 77 } 78 SharkTopLevelBlock* block(int i) const { 79 assert(i < block_count(), "should be"); 80 return _blocks[i]; 81 } 82 GrowableArray<DeferredZeroCheck*>* deferred_zero_checks() { 83 return &_deferred_zero_checks; 84 } 85 SharkStack* stack() const { 86 return _stack; 87 } 88 89 // On-stack replacement 90 private: 91 bool is_osr() const { 92 return flow()->is_osr_flow(); 93 } 94 llvm::FunctionType* entry_point_type() const { 95 if (is_osr()) 96 return SharkType::osr_entry_point_type(); 97 else 98 return SharkType::entry_point_type(); 99 } 100 101 // Block management 102 private: 103 llvm::BasicBlock* _block_insertion_point; 104 105 void set_block_insertion_point(llvm::BasicBlock* block_insertion_point) { 106 _block_insertion_point = block_insertion_point; 107 } 108 llvm::BasicBlock* block_insertion_point() const { 109 return _block_insertion_point; 110 } 111 112 public: 113 llvm::BasicBlock* CreateBlock(const char* name = "") const { 114 return llvm::BasicBlock::Create( 115 SharkContext::current(), name, function(), block_insertion_point()); 116 } 117 118 // Deferred zero checks 119 public: 120 void add_deferred_zero_check(SharkTopLevelBlock* block, 121 SharkValue* value); 122 123 private: 124 void do_deferred_zero_checks(); 125 }; 126 127 #endif // SHARE_VM_SHARK_SHARKFUNCTION_HPP