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/*========================== begin_copyright_notice ============================
Copyright (C) 2017-2022 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#include "AdaptorCommon/ImplicitArgs.hpp"
#include "Compiler/Optimizer/OpenCLPasses/ExtensionFuncs/ExtensionFuncsAnalysis.hpp"
#include "Compiler/IGCPassSupport.h"
using namespace llvm;
using namespace IGC;
// Register pass to igc-opt
#define PASS_FLAG "igc-extension-funcs-analysis"
#define PASS_DESCRIPTION "Analyzes extension functions"
#define PASS_CFG_ONLY false
#define PASS_ANALYSIS false
IGC_INITIALIZE_PASS_BEGIN(ExtensionFuncsAnalysis, PASS_FLAG, PASS_DESCRIPTION, PASS_CFG_ONLY, PASS_ANALYSIS)
IGC_INITIALIZE_PASS_DEPENDENCY(MetaDataUtilsWrapper)
IGC_INITIALIZE_PASS_END(ExtensionFuncsAnalysis, PASS_FLAG, PASS_DESCRIPTION, PASS_CFG_ONLY, PASS_ANALYSIS)
char ExtensionFuncsAnalysis::ID = 0;
ExtensionFuncsAnalysis::ExtensionFuncsAnalysis() : ModulePass(ID)
{
initializeExtensionFuncsAnalysisPass(*PassRegistry::getPassRegistry());
}
const StringRef ExtensionFuncsAnalysis::VME_MB_BLOCK_TYPE = "__builtin_IB_vme_mb_block_type";
const StringRef ExtensionFuncsAnalysis::VME_SUBPIXEL_MODE = "__builtin_IB_vme_subpixel_mode";
const StringRef ExtensionFuncsAnalysis::VME_SAD_ADJUST_MODE = "__builtin_IB_vme_sad_adjust_mode";
const StringRef ExtensionFuncsAnalysis::VME_SEARCH_PATH_TYPE = "__builtin_IB_vme_search_path_type";
const StringRef ExtensionFuncsAnalysis::VME_HELPER_GET_HANDLE = "__builtin_IB_vme_helper_get_handle";
const StringRef ExtensionFuncsAnalysis::VME_HELPER_GET_AS = "__builtin_IB_vme_helper_get_as";
bool ExtensionFuncsAnalysis::runOnModule(Module& M)
{
bool changed = false;
m_pMDUtils = getAnalysis<MetaDataUtilsWrapper>().getMetaDataUtils();
// Run on all functions defined in this module
for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
{
Function* pFunc = &(*I);
if (pFunc->isDeclaration()) continue;
if (runOnFunction(*pFunc))
{
changed = true;
}
}
// Update LLVM metadata based on IGC MetadataUtils
if (changed)
m_pMDUtils->save(M.getContext());
return changed;
}
bool ExtensionFuncsAnalysis::runOnFunction(Function& F)
{
// Processing new function
m_hasVME = false;
// Visit the function
visit(F);
// Check if VME implicit information is needed based on the function analysis
if (!m_hasVME) return false;
// Add the implicit arguments needed by this function
SmallVector<ImplicitArg::ArgType, ImplicitArg::NUM_IMPLICIT_ARGS> implicitArgs;
implicitArgs.push_back(ImplicitArg::VME_MB_BLOCK_TYPE);
implicitArgs.push_back(ImplicitArg::VME_SUBPIXEL_MODE);
implicitArgs.push_back(ImplicitArg::VME_SAD_ADJUST_MODE);
implicitArgs.push_back(ImplicitArg::VME_SEARCH_PATH_TYPE);
// Create the metadata representing the VME implicit args needed by this function
ImplicitArgs::addImplicitArgs(F, implicitArgs, m_pMDUtils);
return true;
}
void ExtensionFuncsAnalysis::visitCallInst(CallInst& CI)
{
// Check for VME function calls
if (Function * F = CI.getCalledFunction())
{
StringRef funcName = F->getName();
if (funcName.equals(VME_MB_BLOCK_TYPE) ||
funcName.equals(VME_SUBPIXEL_MODE) ||
funcName.equals(VME_SAD_ADJUST_MODE) ||
funcName.equals(VME_SEARCH_PATH_TYPE) ||
funcName.startswith(VME_HELPER_GET_HANDLE) ||
funcName.startswith(VME_HELPER_GET_AS))
{
m_hasVME = true;
}
}
}
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