XCoreISelDAGToDAG.cpp | Explore in Territory

//===-- XCoreISelDAGToDAG.cpp - A dag to dag inst selector for XCore ------===//
//
// 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 defines an instruction selector for the XCore target.
//
//===----------------------------------------------------------------------===//

#include "XCore.h"
#include "XCoreTargetMachine.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/CodeGen/SelectionDAGISel.h"
#include "llvm/CodeGen/TargetLowering.h"
#include "llvm/IR/CallingConv.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/IntrinsicsXCore.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
usingnamespacellvm;

#define DEBUG_TYPE …
#define PASS_NAME …

/// XCoreDAGToDAGISel - XCore specific code to select XCore machine
/// instructions for SelectionDAG operations.
///
namespace {
  class XCoreDAGToDAGISel : public SelectionDAGISel { … };

  class XCoreDAGToDAGISelLegacy : public SelectionDAGISelLegacy { … };
}  // end anonymous namespace

char XCoreDAGToDAGISelLegacy::ID = …;

INITIALIZE_PASS(…)

/// createXCoreISelDag - This pass converts a legalized DAG into a
/// XCore-specific DAG, ready for instruction scheduling.
///
FunctionPass *llvm::createXCoreISelDag(XCoreTargetMachine &TM,
                                       CodeGenOptLevel OptLevel) { … }

bool XCoreDAGToDAGISel::SelectADDRspii(SDValue Addr, SDValue &Base,
                                       SDValue &Offset) { … }

bool XCoreDAGToDAGISel::SelectInlineAsmMemoryOperand(
    const SDValue &Op, InlineAsm::ConstraintCode ConstraintID,
    std::vector<SDValue> &OutOps) { … }

void XCoreDAGToDAGISel::Select(SDNode *N) { … }

/// Given a chain return a new chain where any appearance of Old is replaced
/// by New. There must be at most one instruction between Old and Chain and
/// this instruction must be a TokenFactor. Returns an empty SDValue if
/// these conditions don't hold.
static SDValue
replaceInChain(SelectionDAG *CurDAG, SDValue Chain, SDValue Old, SDValue New)
{ … }

bool XCoreDAGToDAGISel::tryBRIND(SDNode *N) { … }
llvm/llvm/lib/Target/XCore/XCoreISelDAGToDAG.cpp
