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/*========================== begin_copyright_notice ============================
Copyright (C) 2017-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#pragma once
#include "Compiler/MetaDataUtilsWrapper.h"
#include "Compiler/CodeGenContextWrapper.hpp"
#include "common/LLVMWarningsPush.hpp"
#include <llvm/Pass.h>
#include <llvm/IR/InstVisitor.h>
#include <llvm/ADT/StringRef.h>
#include "common/LLVMWarningsPop.hpp"
namespace IGC
{
/// @brief WIFuncsAnalysis pass used for analyzing which OpenCL WI (work item) functions
/// are used in the different functions in the module and creating metadata that represents
/// the implicit information needed by each function for resolving these function calls
class WIFuncsAnalysis : public llvm::ModulePass, public llvm::InstVisitor<WIFuncsAnalysis>
{
public:
// Pass identification, replacement for typeid
static char ID;
/// @brief Constructor
WIFuncsAnalysis();
/// @brief Destructor
~WIFuncsAnalysis() {}
/// @brief Provides name of pass
virtual llvm::StringRef getPassName() const override
{
return "WIFuncsAnalysis";
}
void getAnalysisUsage(llvm::AnalysisUsage& AU) const override
{
AU.addRequired<MetaDataUtilsWrapper>();
AU.addRequired<CodeGenContextWrapper>();
}
/// @brief Main entry point.
/// Runs on all functions defined in the given module, finds all OpenCL WI function calls,
/// analyzes them and creates metadata that represents the implicit information needed
/// by each function for resolving these function calls
/// @param M The destination module.
virtual bool runOnModule(llvm::Module& M) override;
/// @brief Call instructions visitor.
/// Checks for OpenCL WI functions and analyzes it
/// @param CI The call instruction.
void visitCallInst(llvm::CallInst& CI);
static const llvm::StringRef GET_LOCAL_ID_X;
static const llvm::StringRef GET_LOCAL_ID_Y;
static const llvm::StringRef GET_LOCAL_ID_Z;
static const llvm::StringRef GET_GROUP_ID;
static const llvm::StringRef GET_LOCAL_THREAD_ID;
static const llvm::StringRef GET_GLOBAL_SIZE;
static const llvm::StringRef GET_LOCAL_SIZE;
static const llvm::StringRef GET_GLOBAL_OFFSET;
static const llvm::StringRef GET_WORK_DIM;
static const llvm::StringRef GET_NUM_GROUPS;
static const llvm::StringRef GET_ENQUEUED_LOCAL_SIZE;
static const llvm::StringRef GET_STAGE_IN_GRID_ORIGIN;
static const llvm::StringRef GET_STAGE_IN_GRID_SIZE;
static const llvm::StringRef GET_SYNC_BUFFER;
private:
/// @brief Function entry point.
/// Finds all OpenCL WI (Work item) function calls in this function, analyzes them and creates
/// metadata that represents the implicit information needed by this function
/// for resolving these function calls
/// @param F The destination function.
bool runOnFunction(llvm::Function& F);
/// @brief Marks whether group id is needed by the current function
bool m_hasGroupID = false;
/// @brief Marks whether local thread id is needed by the current function
bool m_hasLocalThreadID = false;
/// @brief Marks whether global offset is needed by the current function
bool m_hasGlobalOffset = false;
/// @brief Marks whether local id is needed by the current function
bool m_hasLocalID = false;
/// @brief Marks whether global size is needed by the current function
bool m_hasGlobalSize = false;
/// @brief Marks whether local size is needed by the current function
bool m_hasLocalSize = false;
/// @brief Marks whether work dimension is needed by the current function
bool m_hasWorkDim = false;
/// @brief Marks whether number of work groups is needed by the current function
bool m_hasNumGroups = false;
/// @brief Marks whether enqueued local size is needed by the current function
bool m_hasEnqueuedLocalSize = false;
/// @brief Marks whether stage_in_grid_origin is needed by the current function
bool m_hasStageInGridOrigin = false;
/// @brief Marks whether stage_in_grid_size is needed by the current function
bool m_hasStageInGridSize = false;
/// @brief Marks whether sync buffer is needed by the current function
bool m_hasSyncBuffer = false;
/// @brief Marks whether kernel has stackcalls
bool m_hasStackCalls = false;
/// @brief MetaData utils used to generate LLVM metadata
IGCMD::MetaDataUtils* m_pMDUtils = nullptr;
/// @brief context for compilation
IGC::CodeGenContext* m_ctx = nullptr;
};
} // namespace IGC
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