49 lines
1.7 KiB
C++
49 lines
1.7 KiB
C++
//===-- lib/CodeGen/GlobalISel/GISelChangeObserver.cpp --------------------===//
|
|
//
|
|
// 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 constains common code to combine machine functions at generic
|
|
// level.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/CodeGen/GlobalISel/GISelChangeObserver.h"
|
|
#include "llvm/CodeGen/MachineRegisterInfo.h"
|
|
|
|
using namespace llvm;
|
|
|
|
void GISelChangeObserver::changingAllUsesOfReg(
|
|
const MachineRegisterInfo &MRI, Register Reg) {
|
|
for (auto &ChangingMI : MRI.use_instructions(Reg)) {
|
|
changingInstr(ChangingMI);
|
|
ChangingAllUsesOfReg.insert(&ChangingMI);
|
|
}
|
|
}
|
|
|
|
void GISelChangeObserver::finishedChangingAllUsesOfReg() {
|
|
for (auto *ChangedMI : ChangingAllUsesOfReg)
|
|
changedInstr(*ChangedMI);
|
|
ChangingAllUsesOfReg.clear();
|
|
}
|
|
|
|
RAIIDelegateInstaller::RAIIDelegateInstaller(MachineFunction &MF,
|
|
MachineFunction::Delegate *Del)
|
|
: MF(MF), Delegate(Del) {
|
|
// Register this as the delegate for handling insertions and deletions of
|
|
// instructions.
|
|
MF.setDelegate(Del);
|
|
}
|
|
|
|
RAIIDelegateInstaller::~RAIIDelegateInstaller() { MF.resetDelegate(Delegate); }
|
|
|
|
RAIIMFObserverInstaller::RAIIMFObserverInstaller(MachineFunction &MF,
|
|
GISelChangeObserver &Observer)
|
|
: MF(MF) {
|
|
MF.setObserver(&Observer);
|
|
}
|
|
|
|
RAIIMFObserverInstaller::~RAIIMFObserverInstaller() { MF.setObserver(nullptr); }
|