Clover Git
OpenCL 1.1 software implementation
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00001 /* 00002 * Copyright (c) 2011, Denis Steckelmacher <steckdenis@yahoo.fr> 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions are met: 00007 * * Redistributions of source code must retain the above copyright 00008 * notice, this list of conditions and the following disclaimer. 00009 * * Redistributions in binary form must reproduce the above copyright 00010 * notice, this list of conditions and the following disclaimer in the 00011 * documentation and/or other materials provided with the distribution. 00012 * * Neither the name of the copyright holder nor the 00013 * names of its contributors may be used to endorse or promote products 00014 * derived from this software without specific prior written permission. 00015 * 00016 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 00017 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 00018 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 00019 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY 00020 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 00021 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00022 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 00023 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00024 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00025 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00026 */ 00027 00033 #include "program.h" 00034 #include "device.h" 00035 #include "kernel.h" 00036 #include "builtins.h" 00037 00038 #include "../program.h" 00039 00040 #include <llvm/PassManager.h> 00041 #include <llvm/Analysis/Passes.h> 00042 #include <llvm/Analysis/Verifier.h> 00043 #include <llvm/Transforms/Scalar.h> 00044 #include <llvm/Transforms/IPO.h> 00045 #include <llvm/ExecutionEngine/ExecutionEngine.h> 00046 #include <llvm/ExecutionEngine/JIT.h> 00047 #include <llvm/ExecutionEngine/Interpreter.h> 00048 00049 #include <string> 00050 #include <iostream> 00051 00052 using namespace Coal; 00053 00054 CPUProgram::CPUProgram(CPUDevice *device, Program *program) 00055 : DeviceProgram(), p_device(device), p_program(program), p_jit(0) 00056 { 00057 00058 } 00059 00060 CPUProgram::~CPUProgram() 00061 { 00062 if (p_jit) 00063 { 00064 // Dont delete the module 00065 p_jit->removeModule(p_module); 00066 00067 delete p_jit; 00068 } 00069 } 00070 00071 bool CPUProgram::linkStdLib() const 00072 { 00073 return true; 00074 } 00075 00076 void CPUProgram::createOptimizationPasses(llvm::PassManager *manager, bool optimize) 00077 { 00078 if (optimize) 00079 { 00080 /* 00081 * Inspired by code from "The LLVM Compiler Infrastructure" 00082 */ 00083 manager->add(llvm::createDeadArgEliminationPass()); 00084 manager->add(llvm::createInstructionCombiningPass()); 00085 manager->add(llvm::createFunctionInliningPass()); 00086 manager->add(llvm::createPruneEHPass()); // Remove dead EH info. 00087 manager->add(llvm::createGlobalOptimizerPass()); 00088 manager->add(llvm::createGlobalDCEPass()); // Remove dead functions. 00089 manager->add(llvm::createArgumentPromotionPass()); 00090 manager->add(llvm::createInstructionCombiningPass()); 00091 manager->add(llvm::createJumpThreadingPass()); 00092 manager->add(llvm::createScalarReplAggregatesPass()); 00093 manager->add(llvm::createFunctionAttrsPass()); // Add nocapture. 00094 manager->add(llvm::createGlobalsModRefPass()); // IP alias analysis. 00095 manager->add(llvm::createLICMPass()); // Hoist loop invariants. 00096 manager->add(llvm::createGVNPass()); // Remove redundancies. 00097 manager->add(llvm::createMemCpyOptPass()); // Remove dead memcpys. 00098 manager->add(llvm::createDeadStoreEliminationPass()); 00099 manager->add(llvm::createInstructionCombiningPass()); 00100 manager->add(llvm::createJumpThreadingPass()); 00101 manager->add(llvm::createCFGSimplificationPass()); 00102 } 00103 } 00104 00105 bool CPUProgram::build(llvm::Module *module) 00106 { 00107 // Nothing to build 00108 p_module = module; 00109 00110 return true; 00111 } 00112 00113 bool CPUProgram::initJIT() 00114 { 00115 if (p_jit) 00116 return true; 00117 00118 if (!p_module) 00119 return false; 00120 00121 // Create the JIT 00122 std::string err; 00123 llvm::EngineBuilder builder(p_module); 00124 00125 builder.setErrorStr(&err); 00126 builder.setAllocateGVsWithCode(false); 00127 00128 p_jit = builder.create(); 00129 00130 if (!p_jit) 00131 { 00132 std::cout << "Unable to create a JIT: " << err << std::endl; 00133 return false; 00134 } 00135 00136 p_jit->DisableSymbolSearching(true); // Avoid an enormous security hole (a kernel calling system()) 00137 p_jit->InstallLazyFunctionCreator(&getBuiltin); 00138 00139 return true; 00140 } 00141 00142 llvm::ExecutionEngine *CPUProgram::jit() const 00143 { 00144 return p_jit; 00145 }