path: root/utils/TableGen/LLVMCConfigurationEmitter.cpp

//===- LLVMCConfigurationEmitter.cpp - Generate LLVMC config --------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open
// Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This tablegen backend is responsible for emitting LLVMC configuration code.
//
//===----------------------------------------------------------------------===//

#include "LLVMCConfigurationEmitter.h"
#include "Record.h"

#include "llvm/ADT/IntrusiveRefCntPtr.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/Support/Streams.h"

#include <algorithm>
#include <cassert>
#include <functional>
#include <string>

using namespace llvm;

namespace {

//===----------------------------------------------------------------------===//
/// Typedefs

typedef std::vector<Record*> RecordVector;
typedef std::vector<std::string> StrVector;

//===----------------------------------------------------------------------===//
/// Constants

// Indentation strings.
const char * Indent1 = "    ";
const char * Indent2 = "        ";
const char * Indent3 = "            ";
const char * Indent4 = "                ";

// Default help string.
const char * DefaultHelpString = "NO HELP MESSAGE PROVIDED";

// Name for the "sink" option.
const char * SinkOptionName = "AutoGeneratedSinkOption";

//===----------------------------------------------------------------------===//
/// Helper functions

const std::string& InitPtrToString(const Init* ptr) {
  const StringInit& val = dynamic_cast<const StringInit&>(*ptr);
  return val.getValue();
}

int InitPtrToInt(const Init* ptr) {
  const IntInit& val = dynamic_cast<const IntInit&>(*ptr);
  return val.getValue();
}

const DagInit& InitPtrToDagInitRef(const Init* ptr) {
  const DagInit& val = dynamic_cast<const DagInit&>(*ptr);
  return val;
}

// checkNumberOfArguments - Ensure that the number of args in d is
// less than or equal to min_arguments, otherwise throw an exception.
void checkNumberOfArguments (const DagInit* d, unsigned min_arguments) {
  if (d->getNumArgs() < min_arguments)
    throw "Property " + d->getOperator()->getAsString()
      + " has too few arguments!";
}

// isDagEmpty - is this DAG marked with an empty marker?
bool isDagEmpty