/*========================== begin_copyright_notice ============================

Copyright (C) 2017-2021 Intel Corporation

SPDX-License-Identifier: MIT

============================= end_copyright_notice ===========================*/
#pragma once

#include "GenIntrinsicEnum.h"

#include "common/LLVMWarningsPush.hpp"
#include "llvm/ADT/None.h"
#include "llvm/IR/Function.h"
#include "common/LLVMWarningsPop.hpp"

#include <string>
#include <vector>

namespace llvm
{

namespace GenISAIntrinsic
{

/// Intrinsic::getName(ID) - Return the LLVM name for an intrinsic, such as
/// "llvm.ppc.altivec.lvx".
std::string getName(ID id, ArrayRef<Type*> Tys = {}, ArrayRef<Type*> OverloadedPointeeTys = {});


struct IntrinsicComments
{
    const char* funcDescription;
    std::vector<const char*> outputs;
    std::vector<const char*> inputs;
};

IntrinsicComments getIntrinsicComments(ID id);

/// Intrinsic::getDeclaration(M, ID) - Create or insert an LLVM Function
/// declaration for an intrinsic, and return it.
///
/// The OverloadedTys parameter is for intrinsics with overloaded types
/// (i.e., those using iAny, fAny, vAny, or iPTRAny).  For a declaration of
/// an overloaded intrinsic, Tys must provide exactly one type for each
/// overloaded type in the intrinsic in order of dst then srcs.
///
/// For instance, consider the following overloaded function.
///    uint2 foo(size_t offset, int bar, const __global uint2 *p);
///    uint4 foo(size_t offset, int bar, const __global uint4 *p);
/// Such a function has two overloaded type parameters: dst and src2.
/// Thus the type array should two elements:
///    Type Ts[2]{int2, int2}: to resolve to the first instance.
///    Type Ts[2]{int4, int4}: to resolve to the second.
#if defined(ANDROID) || defined(__linux__)
__attribute__ ((visibility ("default"))) Function *getDeclaration(Module *M, ID id, ArrayRef<Type*> OverloadedTys = {}, ArrayRef<Type*> OverloadedPointeeTys = {});
#else
Function *getDeclaration(Module *M, ID id, ArrayRef<Type*> OverloadedTys = {}, ArrayRef<Type*> OverloadedPointeeTys = {});
#endif

//Override of isIntrinsic method defined in Function.h
inline const char * getGenIntrinsicPrefix() { return "llvm.genx."; }
inline bool isIntrinsic(const Function *CF)
{
    return (CF->getName().startswith(getGenIntrinsicPrefix()));
}
ID getIntrinsicID(const Function *F, bool useContextWrapper = true);

} // namespace GenISAIntrinsic

} // namespace llvm
