llvm/llvm/lib/Target/AArch64/AArch64CallingConvention.cpp

//=== AArch64CallingConvention.cpp - AArch64 CC impl ------------*- 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 contains the table-generated and custom routines for the AArch64
// Calling Convention.
//
//===----------------------------------------------------------------------===//

#include "AArch64CallingConvention.h"
#include "AArch64.h"
#include "AArch64InstrInfo.h"
#include "AArch64Subtarget.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/IR/CallingConv.h"
usingnamespacellvm;

static const MCPhysReg XRegList[] = …;
static const MCPhysReg HRegList[] = …;
static const MCPhysReg SRegList[] = …;
static const MCPhysReg DRegList[] = …;
static const MCPhysReg QRegList[] = …;
static const MCPhysReg ZRegList[] = …;
static const MCPhysReg PRegList[] = …;

static bool finishStackBlock(SmallVectorImpl<CCValAssign> &PendingMembers,
                             MVT LocVT, ISD::ArgFlagsTy &ArgFlags,
                             CCState &State, Align SlotAlign) { … }

/// The Darwin variadic PCS places anonymous arguments in 8-byte stack slots. An
/// [N x Ty] type must still be contiguous in memory though.
static bool CC_AArch64_Custom_Stack_Block(
      unsigned &ValNo, MVT &ValVT, MVT &LocVT, CCValAssign::LocInfo &LocInfo,
      ISD::ArgFlagsTy &ArgFlags, CCState &State) { … }

/// Given an [N x Ty] block, it should be passed in a consecutive sequence of
/// registers. If no such sequence is available, mark the rest of the registers
/// of that type as used and place the argument on the stack.
static bool CC_AArch64_Custom_Block(unsigned &ValNo, MVT &ValVT, MVT &LocVT,
                                    CCValAssign::LocInfo &LocInfo,
                                    ISD::ArgFlagsTy &ArgFlags, CCState &State) { … }

// TableGen provides definitions of the calling convention analysis entry
// points.
#include "AArch64GenCallingConv.inc"