llvm/llvm/lib/Target/NVPTX/NVPTXPrologEpilogPass.cpp

//===-- NVPTXPrologEpilogPass.cpp - NVPTX prolog/epilog inserter ----------===//
//
// 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 is a copy of the generic LLVM PrologEpilogInserter pass, modified
// to remove unneeded functionality and to handle virtual registers. Most code
// here is a copy of PrologEpilogInserter.cpp.
//
//===----------------------------------------------------------------------===//

#include "NVPTX.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/TargetFrameLowering.h"
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/Pass.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"

usingnamespacellvm;

#define DEBUG_TYPE …

namespace {
class NVPTXPrologEpilogPass : public MachineFunctionPass { … };
}

MachineFunctionPass *llvm::createNVPTXPrologEpilogPass() { … }

char NVPTXPrologEpilogPass::ID = …;

bool NVPTXPrologEpilogPass::runOnMachineFunction(MachineFunction &MF) { … }

/// AdjustStackOffset - Helper function used to adjust the stack frame offset.
static inline void AdjustStackOffset(MachineFrameInfo &MFI, int FrameIdx,
                                     bool StackGrowsDown, int64_t &Offset,
                                     Align &MaxAlign) { … }

void
NVPTXPrologEpilogPass::calculateFrameObjectOffsets(MachineFunction &Fn) { … }