llvm/llvm/lib/CodeGen/ResetMachineFunctionPass.cpp

//===-- ResetMachineFunctionPass.cpp - Reset Machine Function ----*- 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
//
//===----------------------------------------------------------------------===//
/// \file
/// This file implements a pass that will conditionally reset a machine
/// function as if it was just created. This is used to provide a fallback
/// mechanism when GlobalISel fails, thus the condition for the reset to
/// happen is that the MachineFunction has the FailedISel property.
//===----------------------------------------------------------------------===//

#include "llvm/ADT/ScopeExit.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/CodeGen/StackProtector.h"
#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/InitializePasses.h"
#include "llvm/Support/Debug.h"
#include "llvm/Target/TargetMachine.h"
usingnamespacellvm;

#define DEBUG_TYPE …

STATISTIC(NumFunctionsReset, "Number of functions reset");
STATISTIC(NumFunctionsVisited, "Number of functions visited");

namespace {
  class ResetMachineFunction : public MachineFunctionPass { … };
} // end anonymous namespace

char ResetMachineFunction::ID = …;
INITIALIZE_PASS(…)

MachineFunctionPass *
llvm::createResetMachineFunctionPass(bool EmitFallbackDiag = false,
                                     bool AbortOnFailedISel = false) { … }