llvm/llvm/utils/TableGen/PseudoLoweringEmitter.cpp

//===- PseudoLoweringEmitter.cpp - PseudoLowering Generator -----*- 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
//
//===----------------------------------------------------------------------===//

#include "Common/CodeGenInstruction.h"
#include "Common/CodeGenTarget.h"
#include "llvm/ADT/IndexedMap.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/TableGen/Error.h"
#include "llvm/TableGen/Record.h"
#include "llvm/TableGen/TableGenBackend.h"
#include <vector>
usingnamespacellvm;

#define DEBUG_TYPE …

namespace {
class PseudoLoweringEmitter { … };
} // End anonymous namespace

// FIXME: This pass currently can only expand a pseudo to a single instruction.
//        The pseudo expansion really should take a list of dags, not just
//        a single dag, so we can do fancier things.

unsigned PseudoLoweringEmitter::addDagOperandMapping(
    Record *Rec, DagInit *Dag, CodeGenInstruction &Insn,
    IndexedMap<OpData> &OperandMap, unsigned BaseIdx) { … }

void PseudoLoweringEmitter::evaluateExpansion(Record *Rec) { … }

void PseudoLoweringEmitter::emitLoweringEmitter(raw_ostream &o) { … }

void PseudoLoweringEmitter::run(raw_ostream &o) { … }

static TableGen::Emitter::OptClass<PseudoLoweringEmitter>
    X("gen-pseudo-lowering", "Generate pseudo instruction lowering");