llvm/llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchBaseInfo.cpp

//= LoongArchBaseInfo.cpp - Top level definitions for LoongArch MC -*- C++ -*-//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements helper functions for the LoongArch target useful for the
// compiler back-end and the MC libraries.
//
//===----------------------------------------------------------------------===//

#include "LoongArchBaseInfo.h"
#include "LoongArchMCTargetDesc.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/TargetParser/Triple.h"

namespace llvm {

namespace LoongArchABI {

// Check if ABI has been standardized; issue a warning if it hasn't.
// FIXME: Once all ABIs are standardized, this will be removed.
static ABI checkABIStandardized(ABI Abi) { … }

static ABI getTripleABI(const Triple &TT) { … }

ABI computeTargetABI(const Triple &TT, const FeatureBitset &FeatureBits,
                     StringRef ABIName) { … }

ABI getTargetABI(StringRef ABIName) { … }

// To avoid the BP value clobbered by a function call, we need to choose a
// callee saved register to save the value. The `last` `S` register (s9) is
// used for FP. So we choose the previous (s8) as BP.
MCRegister getBPReg() { … }

} // end namespace LoongArchABI

} // end namespace llvm