llvm/llvm/lib/Target/AArch64/GISel/AArch64PostSelectOptimize.cpp

//=== AArch64PostSelectOptimize.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 pass does post-instruction-selection optimizations in the GlobalISel
// pipeline, before the rest of codegen runs.
//
//===----------------------------------------------------------------------===//

#include "AArch64.h"
#include "AArch64TargetMachine.h"
#include "MCTargetDesc/AArch64MCTargetDesc.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/CodeGen/GlobalISel/Utils.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/TargetPassConfig.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"

#define DEBUG_TYPE …

usingnamespacellvm;

namespace {
class AArch64PostSelectOptimize : public MachineFunctionPass { … };
} // end anonymous namespace

void AArch64PostSelectOptimize::getAnalysisUsage(AnalysisUsage &AU) const { … }

AArch64PostSelectOptimize::AArch64PostSelectOptimize()
    : … { … }

unsigned getNonFlagSettingVariant(unsigned Opc) { … }

bool AArch64PostSelectOptimize::doPeepholeOpts(MachineBasicBlock &MBB) { … }

bool AArch64PostSelectOptimize::foldSimpleCrossClassCopies(MachineInstr &MI) { … }

bool AArch64PostSelectOptimize::foldCopyDup(MachineInstr &MI) { … }

bool AArch64PostSelectOptimize::optimizeNZCVDefs(MachineBasicBlock &MBB) { … }

bool AArch64PostSelectOptimize::runOnMachineFunction(MachineFunction &MF) { … }

char AArch64PostSelectOptimize::ID = …;
INITIALIZE_PASS_BEGIN(AArch64PostSelectOptimize, DEBUG_TYPE,
                      "Optimize AArch64 selected instructions",
                      false, false)
INITIALIZE_PASS_END(AArch64PostSelectOptimize, DEBUG_TYPE,
                    "Optimize AArch64 selected instructions", false,
                    false)

namespace llvm {
FunctionPass *createAArch64PostSelectOptimize() { … }
} // end namespace llvm