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/* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and /or associated documentation files
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* (the "Materials "), to deal in the Materials without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Materials,
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* and to permit persons to whom the Materials are furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Materials.
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*
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* THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MATERIALS OR
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* THE USE OR OTHER DEALINGS IN THE MATERIALS.
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*/
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#ifndef __SFCOMPILER_H
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# include "sfCompiler.h"
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#endif
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#ifndef __RIPIXELPIPE_H
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# include "riPixelPipe.h"
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#endif
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#include <iostream>
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#include <sstream>
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#include <stdio.h>
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#include "llvm/LLVMContext.h"
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#include "llvm/Module.h"
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#include "llvm/Bitcode/ReaderWriter.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Type.h"
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#include "llvm/Value.h"
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#include "llvm/Constant.h"
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#include "llvm/Constants.h"
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#include "llvm/Argument.h"
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#include "llvm/Transforms/Utils/Cloning.h"
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#include "llvm/Pass.h"
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#include "llvm/PassManager.h"
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#include "llvm/Support/StandardPasses.h"
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#include "llvm/Transforms/Utils/BasicInliner.h"
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#include "llvm/ExecutionEngine/JIT.h"
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#include "llvm/ExecutionEngine/ExecutionEngine.h"
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#include "llvm/Target/TargetSelect.h"
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#include "llvm/Support/ManagedStatic.h"
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// This file is found as an output of compilation (in the binary directory).
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// Rationale for this is that the output is somewhat platform dependent.
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#include "binaryPixelPipe.h"
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#include "binaryBlitter.h"
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namespace OpenVGRI {
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static bool single_compiler = true;
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PPCompiler* PPCompiler::s_compiler = NULL;
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PPCompiler::PPCompiler() :
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m_executionEngine(NULL),
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m_ppCache(NUM_CACHED_PIXELPIPES),
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m_blitterCache(NUM_CACHED_BLITTERS),
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m_llvmContext()
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{
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// \todo Make this class into a singleton?
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RI_ASSERT(single_compiler);
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if (single_compiler)
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single_compiler = false;
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::llvm::InitializeNativeTarget();
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init();
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}
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PPCompiler::~PPCompiler()
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{
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if (m_executionEngine)
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delete m_executionEngine;
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}
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PPCompiler::PPCompilerContext::PPCompilerContext() :
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module(NULL),
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llvmFunction(NULL)
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{
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}
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PPCompiler::PPCompilerContext::~PPCompilerContext()
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{
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// All the other objects should be owned by the executionengine, and
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// that is owned by the PPCompiler, so do nothing here.
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}
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bool PPCompiler::initPPContext(
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PPCompilerContext& context,
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const unsigned char* data,
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size_t dataSize,
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const char* functionName)
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{
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try {
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std::string err;
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const char *byteCodeStart = (const char*)data;
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const char *byteCodeEnd = (const char*)(data + dataSize);
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::llvm::MemoryBuffer* memBuffer = ::llvm::MemoryBuffer::getMemBufferCopy(byteCodeStart, byteCodeEnd);
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llvmCheckPtrError((void*)memBuffer, err);
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// Make sure the module is fully read:
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//::llvm::Module* ppModule = moduleProvider->materializeModule(&err);
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::llvm::Module* ppModule = ::llvm::getLazyBitcodeModule(memBuffer, getLLVMContext(), &err);
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ppModule->MaterializeAll();
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llvmCheckPtrError(ppModule, err);
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context.module = ppModule;
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//ppModule->dump();
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if (!m_executionEngine)
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{
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m_executionEngine = ::llvm::ExecutionEngine::createJIT(ppModule, &err, NULL, ::llvm::CodeGenOpt::Aggressive);
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llvmCheckPtrError(m_executionEngine, err);
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}
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else
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m_executionEngine->addModule(ppModule);
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//m_executionEngine->runStaticConstructorsDestructors(false);
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::llvm::Function* originalFunc = findFunctionWithString(ppModule, functionName);
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llvmCheckPtrError((const void*)originalFunc, err);
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context.llvmFunction = originalFunc;
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//originalFunc->dump();
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} catch (int err)
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{
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(void)err;
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std::cerr << "*** Failed to initialize a pixelpipeline module." << std::endl;
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return false;
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}
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return true;
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}
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/**
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* \brief Loads the modules this compiler supports.
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*/
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bool PPCompiler::init()
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{
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if (!initPPContext(m_ppContext, integerPixelPipe_binary, sizeof(integerPixelPipe_binary), "executePixelPipeline"))
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return false;
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if (!initPPContext(m_blitterContext, integerBlitter_binary, sizeof(integerBlitter_binary), "executeBlitter"))
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return false;
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m_ppCache.setLLVMInterface(m_executionEngine, m_ppContext.module);
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m_blitterCache.setLLVMInterface(m_executionEngine, m_blitterContext.module);
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return true;
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}
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// Helps cast void* to function pointers (may be platform dependent, usually works):
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union FuncCaster {
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void* ptr;
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PixelPipeFunction pipeFunc;
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BlitterFunction blitFunc;
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};
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PPCompiler::PartialEvalFunc PPCompiler::compilePixelPipeline(::llvm::LLVMContext& llvmContext, PPCompilerContext& compilerContext, ConstantGenFunc constGenFunc, const void* state, const std::string& newFunctionName)
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{
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// Get the constant state argument (must be the first in the list):
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::llvm::Function::arg_iterator argit = compilerContext.llvmFunction->arg_begin();
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::llvm::Argument& arg = *argit;
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//arg.getType()->dump();
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::llvm::Constant* constantState = constGenFunc(state, llvmContext, arg.getType()->getContainedType(0));
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RI_ASSERT(constantState);
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//constantState->dump();
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// \todo Even though this variable could be automatically cleaned up by the optimizations,
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// it should be stored in the cache and destroyed along with the function when
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// the cache-entry is dropped out.
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::llvm::GlobalVariable* constantStateVariable = new ::llvm::GlobalVariable(
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*compilerContext.module, constantState->getType(), true, ::llvm::GlobalValue::PrivateLinkage, constantState, newFunctionName + "_constState");
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// When to delete the global variable?
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// -> When the pixel-pipe is removed from the cache. Also, when the compiler is deleted.
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::llvm::DenseMap<const ::llvm::Value*, ::llvm::Value*> valueMap;
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std::pair<const ::llvm::Value*, ::llvm::Value*> valueReplacement((::llvm::Value*)&arg, constantStateVariable);
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valueMap.insert(valueReplacement);
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::llvm::Function* specializedFunc = ::llvm::CloneFunction(compilerContext.llvmFunction, valueMap, NULL);
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specializedFunc->setName(newFunctionName);
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//specializedFunc->dump();
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compilerContext.module->getFunctionList().push_back(specializedFunc);
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// \note Currently this creates the pass manager every time a pipeline is compiled...
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::llvm::PassManager pm;
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// \todo Seems like the greater the threshold, the more the pass will inline:
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// In practice, everything should be inlineed into the resulting pipe.
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::llvm::Pass* inliningPass = ::llvm::createFunctionInliningPass(100000);
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::llvm::createStandardModulePasses(&pm, 3, false, true, true, true, false, inliningPass);
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pm.run(*compilerContext.module);
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//ppModule->dump();
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//compilerContext.llvmFunction->dump();
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PartialEvalFunc ret = {specializedFunc, constantStateVariable};
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return ret;
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}
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/**
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* \brief Compile a pipeline if necessary. If the pipeline is cached, return a
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* handle to it.
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* \return NULL handle if operation was not successful, otherwise a handle to the pipeline.
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* \todo For deferred JITting, it might make sense to return a special value
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* to indicate that the pipeline is under compilation.
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* \note LLVM compilation should be thread-safe internally.
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*/
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PPCompiler::PixelPipeHandle PPCompiler::compilePixelPipeline(const PixelPipe::SignatureState& state)
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{
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PixelPipeHash hash;
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calculatePPHash(hash, state);
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PixelPipeEntryHandle entry = m_ppCache.findCachedItemByHash(hash);
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if (!entry)
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{
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PartialEvalFunc pf;
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std::string funcName = "compiledPPFunc_" + PPCompiler::stringOfArray(hash.value, sizeof(hash.value)/sizeof(hash.value[0]));
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pf = compilePixelPipeline(getLLVMContext(), m_ppContext, createPPConstant, (const void*)&state, funcName.c_str());
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entry = m_ppCache.cacheFunction(hash, pf.llvmFunc, pf.llvmConst);
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#if defined(RI_DEBUG) && 0
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pf.llvmFunc->dump();
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#endif
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}
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if (!entry)
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{
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RI_ASSERT(false);
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// Release the function!
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}
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return (PixelPipeHandle)entry;
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}
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PPCompiler::BlitterHandle PPCompiler::compileBlitter(const DynamicBlitter::BlitSignatureState& state)
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{
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// \todo This function is almost the same as compilePixelPipeline.
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BlitterHash hash;
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DynamicBlitter::calculateHash(hash, state);
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BlitterEntryHandle entry = m_blitterCache.findCachedItemByHash(hash);
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if (!entry)
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{
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PartialEvalFunc pf;
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std::string funcName = "compiledBlitterFunc_" + PPCompiler::stringOfArray(hash.value, sizeof(hash.value)/sizeof(hash.value[0]));
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pf = compilePixelPipeline(getLLVMContext(), m_blitterContext, createBlitterConstant, (const void*)&state, funcName.c_str());
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entry = m_blitterCache.cacheFunction(hash, pf.llvmFunc, pf.llvmConst);
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}
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if (!entry)
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{
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RI_ASSERT(false);
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// Release the function!
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}
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RI_ASSERT(entry);
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return (BlitterHandle)entry;
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}
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PixelPipeFunction PPCompiler::getPixelPipePtr(PixelPipeHandle handle)
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{
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PixelPipeEntryHandle entryHandle = (PixelPipeEntryHandle)handle;
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::llvm::Function* function = m_ppCache.getFunction(entryHandle);
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FuncCaster c;
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c.ptr = m_executionEngine->getPointerToFunction(function);
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return c.pipeFunc;
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}
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BlitterFunction PPCompiler::getBlitterPtr(BlitterHandle handle)
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{
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BlitterEntryHandle entryHandle = (BlitterEntryHandle)handle;
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::llvm::Function* function = m_blitterCache.getFunction(entryHandle);
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FuncCaster c;
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c.ptr = m_executionEngine->getPointerToFunction(function);
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return c.blitFunc;
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}
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// Release a reference to a pixel-pipeline handle.
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void PPCompiler::releasePixelPipeline(PixelPipeHandle handle)
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{
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PixelPipeEntryHandle entryHandle = (PixelPipeEntryHandle)handle;
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m_ppCache.releaseEntry(entryHandle);
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}
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// Release a reference to a blitter handle.
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void PPCompiler::releaseBlitter(BlitterHandle handle)
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{
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BlitterEntryHandle entryHandle = (BlitterEntryHandle)handle;
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m_blitterCache.releaseEntry(entryHandle);
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}
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#if 0
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// \todo Complete this and make it fully recursive: this way all the C-structs
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// can be converted to corresponding LLVM classes at runtime.
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::llvm::Constant* PPCompiler::createConstantStruct(const void* structure, size_t structSize, ::llvm::LLVMContext& llvmContext, const ::llvm::Type* structType) const
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{
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// Only copies integer-values (int, bools)
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RIuint8* bytePtr = (RIuint8*)structure;
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::llvm::Type::subtype_iterator subtypeBegin, subtypeEnd;
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subtypeBegin = structType->subtype_begin();
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subtypeEnd = structType->subtype_end();
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for(::llvm::Type::subtype_iterator it = subtypeBegin; it != subtypeEnd; ++it)
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{
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::llvm::Type* elementType = *it;
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RI_ASSERT(elementType->isSized());
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unsigned int elementBitSize = elementType->getPrimitiveSizeInBits();
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RI_ASSERT((elementBitSize % 8) == 0);
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unsigned int elementSize = elementBitSize / 8;
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RI_ASSERT(elementSize > 0 && elementSize <= 4);
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bytePtr += elementSize;
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}
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}
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#endif
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/**
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* \brief Creates a LLVM constant from a color descriptor.
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* \todo Create global constants from these for every possible color format!
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*/
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RI_INLINE static ::llvm::Constant* createDescConstant(const Color::Descriptor& desc, ::llvm::LLVMContext& llvmContext, const ::llvm::Type* structType)
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{
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::llvm::Constant* constants[] = {
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::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), desc.redBits, true),
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::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), desc.redShift, true),
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::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), desc.greenBits, true),
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::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), desc.greenShift, true),
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::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), desc.blueBits, true),
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::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), desc.blueShift, true),
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::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), desc.alphaBits, true),
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::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), desc.alphaShift, true),
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::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), desc.luminanceBits, true),
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::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), desc.luminanceShift, true),
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::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), desc.shape, false),
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::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), desc.vgFormat, false),
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::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), desc.internalFormat, false),
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::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), desc.bitsPerPixel, true),
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::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), desc.bytesPerPixel, true),
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::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), desc.maskBits, true),
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::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), desc.maskShift, true),
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};
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std::vector< ::llvm::Constant*> structConsts;
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for (size_t i = 0; i < sizeof(constants)/sizeof(constants[0]); i++)
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{
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structConsts.push_back(constants[i]);
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}
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::llvm::Constant* constStruct = ::llvm::ConstantStruct::get((::llvm::StructType*)structType, structConsts);
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return constStruct;
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}
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::llvm::Constant* PPCompiler::createPPConstant(const void* signatureState, ::llvm::LLVMContext& llvmContext, const ::llvm::Type* structType)
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{
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// Get the actual object. This is a messy way to abstract setting the structure, but
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// there is little sense in making more classes/adapters/whatever at this point.
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const PixelPipe::SignatureState& state = *(const PixelPipe::SignatureState*)signatureState;
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// \todo There seems to be no way to track the structure member names once
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389 |
// LLVM has generated the bitcode (only offsets and references to those
|
|
390 |
// offsets remain). Means to track proper setting of struct members in
|
|
391 |
// DEBUG build must be implemented in some other way.
|
|
392 |
//
|
|
393 |
// For now, the state and this function must be kept carefully in sync!
|
|
394 |
|
|
395 |
const int cDescriptorElementIndex = 8;
|
|
396 |
const ::llvm::Type* descType = structType->getContainedType(cDescriptorElementIndex);
|
|
397 |
|
|
398 |
::llvm::Constant* constants[] = {
|
|
399 |
::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), state.blendMode, false),
|
|
400 |
::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), state.imageMode, false),
|
|
401 |
::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), state.paintType, false),
|
|
402 |
::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), state.maskOperation, false),
|
|
403 |
::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), state.paintTilingMode, false),
|
|
404 |
::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), state.paintSampler, false),
|
|
405 |
::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), state.imageSampler, false),
|
|
406 |
|
|
407 |
::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), state.imageGradientType, false),
|
|
408 |
|
|
409 |
createDescConstant(state.dstDesc, llvmContext, descType),
|
|
410 |
createDescConstant(state.maskDesc, llvmContext, descType),
|
|
411 |
createDescConstant(state.imageDesc, llvmContext, descType),
|
|
412 |
createDescConstant(state.patternDesc, llvmContext, descType),
|
|
413 |
|
|
414 |
::llvm::ConstantInt::get(::llvm::Type::getInt8Ty(llvmContext), state.hasMasking, false),
|
|
415 |
::llvm::ConstantInt::get(::llvm::Type::getInt8Ty(llvmContext), state.hasImage, false),
|
|
416 |
::llvm::ConstantInt::get(::llvm::Type::getInt8Ty(llvmContext), state.hasColorTransform, false),
|
|
417 |
::llvm::ConstantInt::get(::llvm::Type::getInt8Ty(llvmContext), state.isRenderToMask, false),
|
|
418 |
::llvm::ConstantInt::get(::llvm::Type::getInt8Ty(llvmContext), state.fillColorTransparent, false),
|
|
419 |
::llvm::ConstantInt::get(::llvm::Type::getInt8Ty(llvmContext), state.unsafeImageInput, false),
|
|
420 |
};
|
|
421 |
|
|
422 |
std::vector< ::llvm::Constant*> structConsts;
|
|
423 |
|
|
424 |
for (size_t i = 0; i < sizeof(constants)/sizeof(constants[0]); i++)
|
|
425 |
{
|
|
426 |
structConsts.push_back(constants[i]);
|
|
427 |
}
|
|
428 |
|
|
429 |
::llvm::Constant* constStruct = ::llvm::ConstantStruct::get((::llvm::StructType*)structType, structConsts);
|
|
430 |
|
|
431 |
return constStruct;
|
|
432 |
}
|
|
433 |
|
|
434 |
::llvm::Constant* PPCompiler::createBlitterConstant(const void* signatureState, ::llvm::LLVMContext& llvmContext, const ::llvm::Type* structType)
|
|
435 |
{
|
|
436 |
const DynamicBlitter::BlitSignatureState& state = *(const DynamicBlitter::BlitSignatureState*)signatureState;
|
|
437 |
|
|
438 |
const int cDescriptorElementIndex = 4;
|
|
439 |
const ::llvm::Type* descType = structType->getContainedType(cDescriptorElementIndex);
|
|
440 |
|
|
441 |
::llvm::Constant* constants[] = {
|
|
442 |
::llvm::ConstantInt::get(::llvm::Type::getInt32Ty(llvmContext), state.maskOperation, false),
|
|
443 |
::llvm::ConstantInt::get(::llvm::Type::getInt8Ty(llvmContext), state.incompatibleStrides, false),
|
|
444 |
::llvm::ConstantInt::get(::llvm::Type::getInt8Ty(llvmContext), state.isMaskOperation, false),
|
|
445 |
::llvm::ConstantInt::get(::llvm::Type::getInt8Ty(llvmContext), state.unsafeInput, false),
|
|
446 |
|
|
447 |
createDescConstant(state.srcDesc, llvmContext, descType),
|
|
448 |
createDescConstant(state.dstDesc, llvmContext, descType),
|
|
449 |
};
|
|
450 |
|
|
451 |
std::vector< ::llvm::Constant*> structConsts;
|
|
452 |
|
|
453 |
for (size_t i = 0; i < sizeof(constants)/sizeof(constants[0]); i++)
|
|
454 |
{
|
|
455 |
structConsts.push_back(constants[i]);
|
|
456 |
}
|
|
457 |
|
|
458 |
::llvm::Constant* constStruct = ::llvm::ConstantStruct::get((::llvm::StructType*)structType, structConsts);
|
|
459 |
|
|
460 |
return constStruct;
|
|
461 |
}
|
|
462 |
|
|
463 |
/**
|
|
464 |
* \brief Find a function whose name containst ``namepart''. Useful for finding c++
|
|
465 |
* decorated names from modules (if they are unique).
|
|
466 |
* \note Maybe should use C-functions only in the final product.
|
|
467 |
*/
|
|
468 |
::llvm::Function* PPCompiler::findFunctionWithString(::llvm::Module* module, const char* namepart)
|
|
469 |
{
|
|
470 |
// Find a function whose name contains 'namepart'
|
|
471 |
llvm::Module::iterator it, end;
|
|
472 |
it = module->begin();
|
|
473 |
end = module->end();
|
|
474 |
for (; it != end; ++it)
|
|
475 |
{
|
|
476 |
if (!it->isDeclaration())
|
|
477 |
if (it->getNameStr().find(namepart) != std::string::npos)
|
|
478 |
return it;
|
|
479 |
}
|
|
480 |
return NULL;
|
|
481 |
}
|
|
482 |
|
|
483 |
void PPCompiler::llvmCheckPtrError(const void* ptr, std::string& err)
|
|
484 |
{
|
|
485 |
#if defined(RI_DEBUG)
|
|
486 |
(void)err;
|
|
487 |
//std::cout << "LLVM returned: " << ptr << ". Error string: \"" << err << "\"" << std::endl;
|
|
488 |
#else
|
|
489 |
(void)err;
|
|
490 |
#endif
|
|
491 |
if (!ptr)
|
|
492 |
throw(-1);
|
|
493 |
}
|
|
494 |
|
|
495 |
/*static*/ std::string PPCompiler::stringOfArray(const RIuint32* arr, int nElems)
|
|
496 |
{
|
|
497 |
char tempBuffer[9];
|
|
498 |
std::stringstream out;
|
|
499 |
// Ambiquities resolved by using a constant width:
|
|
500 |
RI_ASSERT(nElems > 0);
|
|
501 |
int i = nElems-1;
|
|
502 |
do {
|
|
503 |
snprintf(tempBuffer, sizeof(tempBuffer), "%08x", arr[i]);
|
|
504 |
out << tempBuffer;
|
|
505 |
i--;
|
|
506 |
} while(i >= 0);
|
|
507 |
|
|
508 |
return out.str();
|
|
509 |
}
|
|
510 |
|
|
511 |
}
|
|
512 |
|