/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp

Bug Summary

File:	lib/TableGen/Record.cpp
Warning:	line 435, column 16 Called C++ object pointer is null
Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name Record.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mthread-model posix -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -momit-leaf-frame-pointer -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-8/lib/clang/8.0.0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-8~svn350071/build-llvm/lib/TableGen -I /build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen -I /build/llvm-toolchain-snapshot-8~svn350071/build-llvm/include -I /build/llvm-toolchain-snapshot-8~svn350071/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/include/clang/8.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-8/lib/clang/8.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-8~svn350071/build-llvm/lib/TableGen -fdebug-prefix-map=/build/llvm-toolchain-snapshot-8~svn350071=. -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -stack-protector 2 -fobjc-runtime=gcc -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2018-12-27-042839-1215-1 -x c++ /build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp -faddrsig
1//===- Record.cpp - Record implementation ---------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// Implement the tablegen record classes.
11//
12//===----------------------------------------------------------------------===//

14#include "llvm/ADT/ArrayRef.h"
15#include "llvm/ADT/DenseMap.h"
16#include "llvm/ADT/FoldingSet.h"
17#include "llvm/ADT/SmallString.h"
18#include "llvm/ADT/SmallVector.h"
19#include "llvm/ADT/StringExtras.h"
20#include "llvm/ADT/StringMap.h"
21#include "llvm/ADT/StringRef.h"
22#include "llvm/Config/llvm-config.h"
23#include "llvm/Support/Allocator.h"
24#include "llvm/Support/Casting.h"
25#include "llvm/Support/Compiler.h"
26#include "llvm/Support/ErrorHandling.h"
27#include "llvm/Support/SMLoc.h"
28#include "llvm/Support/raw_ostream.h"
29#include "llvm/TableGen/Error.h"
30#include "llvm/TableGen/Record.h"
31#include <cassert>
32#include <cstdint>
33#include <memory>
34#include <string>
35#include <utility>
36#include <vector>

38using namespace llvm;

40static BumpPtrAllocator Allocator;

42//===----------------------------------------------------------------------===//
43//    Type implementations
44//===----------------------------------------------------------------------===//

46BitRecTy BitRecTy::Shared;
47CodeRecTy CodeRecTy::Shared;
48IntRecTy IntRecTy::Shared;
49StringRecTy StringRecTy::Shared;
50DagRecTy DagRecTy::Shared;

52#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
53LLVM_DUMP_METHOD__attribute__((noinline)) __attribute__((__used__)) void RecTy::dump() const { print(errs()); }
54#endif

56ListRecTy *RecTy::getListTy() {
if (!ListTy)
  ListTy = new(Allocator) ListRecTy(this);
return ListTy;
60}

62bool RecTy::typeIsConvertibleTo(const RecTy *RHS) const {
assert(RHS && "NULL pointer")((RHS && "NULL pointer") ? static_cast<void> (0
) : __assert_fail ("RHS && \"NULL pointer\"", "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 63, __PRETTY_FUNCTION__));
return Kind == RHS->getRecTyKind();
65}

67bool RecTy::typeIsA(const RecTy *RHS) const { return this == RHS; }

69bool BitRecTy::typeIsConvertibleTo(const RecTy *RHS) const{
if (RecTy::typeIsConvertibleTo(RHS) || RHS->getRecTyKind() == IntRecTyKind)
  return true;
if (const BitsRecTy *BitsTy = dyn_cast<BitsRecTy>(RHS))
  return BitsTy->getNumBits() == 1;
return false;
75}

77BitsRecTy *BitsRecTy::get(unsigned Sz) {
static std::vector<BitsRecTy*> Shared;
if (Sz >= Shared.size())
  Shared.resize(Sz + 1);
BitsRecTy *&Ty = Shared[Sz];
if (!Ty)
  Ty = new(Allocator) BitsRecTy(Sz);
return Ty;
85}

87std::string BitsRecTy::getAsString() const {
return "bits<" + utostr(Size) + ">";
89}

91bool BitsRecTy::typeIsConvertibleTo(const RecTy *RHS) const {
if (RecTy::typeIsConvertibleTo(RHS)) //argument and the sender are same type
  return cast<BitsRecTy>(RHS)->Size == Size;
RecTyKind kind = RHS->getRecTyKind();
return (kind == BitRecTyKind && Size == 1) || (kind == IntRecTyKind);
96}

98bool BitsRecTy::typeIsA(const RecTy *RHS) const {
if (const BitsRecTy *RHSb = dyn_cast<BitsRecTy>(RHS))
  return RHSb->Size == Size;
return false;
102}

104bool IntRecTy::typeIsConvertibleTo(const RecTy *RHS) const {
RecTyKind kind = RHS->getRecTyKind();
return kind==BitRecTyKind || kind==BitsRecTyKind || kind==IntRecTyKind;
107}

109bool CodeRecTy::typeIsConvertibleTo(const RecTy *RHS) const {
RecTyKind Kind = RHS->getRecTyKind();
return Kind == CodeRecTyKind || Kind == StringRecTyKind;
112}

114std::string StringRecTy::getAsString() const {
return "string";
116}

118bool StringRecTy::typeIsConvertibleTo(const RecTy *RHS) const {
RecTyKind Kind = RHS->getRecTyKind();
return Kind == StringRecTyKind || Kind == CodeRecTyKind;
121}

123std::string ListRecTy::getAsString() const {
return "list<" + Ty->getAsString() + ">";
125}

127bool ListRecTy::typeIsConvertibleTo(const RecTy *RHS) const {
if (const auto *ListTy = dyn_cast<ListRecTy>(RHS))
  return Ty->typeIsConvertibleTo(ListTy->getElementType());
return false;
131}

133bool ListRecTy::typeIsA(const RecTy *RHS) const {
if (const ListRecTy *RHSl = dyn_cast<ListRecTy>(RHS))
  return getElementType()->typeIsA(RHSl->getElementType());
return false;
137}

139std::string DagRecTy::getAsString() const {
return "dag";
141}

143static void ProfileRecordRecTy(FoldingSetNodeID &ID,
                             ArrayRef<Record *> Classes) {
ID.AddInteger(Classes.size());
for (Record *R : Classes)
  ID.AddPointer(R);
148}

150RecordRecTy *RecordRecTy::get(ArrayRef<Record *> UnsortedClasses) {
if (UnsortedClasses.empty()) {
  static RecordRecTy AnyRecord(0);
  return &AnyRecord;
}

FoldingSet<RecordRecTy> &ThePool =
    UnsortedClasses[0]->getRecords().RecordTypePool;

SmallVector<Record *, 4> Classes(UnsortedClasses.begin(),
                                 UnsortedClasses.end());
llvm::sort(Classes, [](Record *LHS, Record *RHS) {
  return LHS->getNameInitAsString() < RHS->getNameInitAsString();
});

FoldingSetNodeID ID;
ProfileRecordRecTy(ID, Classes);

void *IP = nullptr;
if (RecordRecTy *Ty = ThePool.FindNodeOrInsertPos(ID, IP))
  return Ty;

172#ifndef NDEBUG
// Check for redundancy.
for (unsigned i = 0; i < Classes.size(); ++i) {
  for (unsigned j = 0; j < Classes.size(); ++j) {
    assert(i == j || !Classes[i]->isSubClassOf(Classes[j]))((i == j || !Classes[i]->isSubClassOf(Classes[j])) ? static_cast
<void> (0) : __assert_fail ("i == j || !Classes[i]->isSubClassOf(Classes[j])"
, "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 176, __PRETTY_FUNCTION__));
  }
  assert(&Classes[0]->getRecords() == &Classes[i]->getRecords())((&Classes[0]->getRecords() == &Classes[i]->getRecords
()) ? static_cast<void> (0) : __assert_fail ("&Classes[0]->getRecords() == &Classes[i]->getRecords()"
, "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 178, __PRETTY_FUNCTION__));
}
180#endif

void *Mem = Allocator.Allocate(totalSizeToAlloc<Record *>(Classes.size()),
                               alignof(RecordRecTy));
RecordRecTy *Ty = new(Mem) RecordRecTy(Classes.size());
std::uninitialized_copy(Classes.begin(), Classes.end(),
                        Ty->getTrailingObjects<Record *>());
ThePool.InsertNode(Ty, IP);
return Ty;
189}

191void RecordRecTy::Profile(FoldingSetNodeID &ID) const {
ProfileRecordRecTy(ID, getClasses());
193}

195std::string RecordRecTy::getAsString() const {
if (NumClasses == 1)
  return getClasses()[0]->getNameInitAsString();

std::string Str = "{";
bool First = true;
for (Record *R : getClasses()) {
  if (!First)
    Str += ", ";
  First = false;
  Str += R->getNameInitAsString();
}
Str += "}";
return Str;
209}

211bool RecordRecTy::isSubClassOf(Record *Class) const {
return llvm::any_of(getClasses(), [Class](Record *MySuperClass) {
                                    return MySuperClass == Class ||
                                           MySuperClass->isSubClassOf(Class);
                                  });
216}

218bool RecordRecTy::typeIsConvertibleTo(const RecTy *RHS) const {
if (this == RHS)
  return true;

const RecordRecTy *RTy = dyn_cast<RecordRecTy>(RHS);
if (!RTy)
  return false;

return llvm::all_of(RTy->getClasses(), [this](Record *TargetClass) {
                                         return isSubClassOf(TargetClass);
                                       });
229}

231bool RecordRecTy::typeIsA(const RecTy *RHS) const {
return typeIsConvertibleTo(RHS);
233}

235static RecordRecTy *resolveRecordTypes(RecordRecTy *T1, RecordRecTy *T2) {
SmallVector<Record *, 4> CommonSuperClasses;
SmallVector<Record *, 4> Stack;

Stack.insert(Stack.end(), T1->classes_begin(), T1->classes_end());

while (!Stack.empty()) {
  Record *R = Stack.back();
  Stack.pop_back();

  if (T2->isSubClassOf(R)) {
    CommonSuperClasses.push_back(R);
  } else {
    R->getDirectSuperClasses(Stack);
  }
}

return RecordRecTy::get(CommonSuperClasses);
253}

255RecTy *llvm::resolveTypes(RecTy *T1, RecTy *T2) {
if (T1 == T2)
  return T1;

if (RecordRecTy *RecTy1 = dyn_cast<RecordRecTy>(T1)) {
  if (RecordRecTy *RecTy2 = dyn_cast<RecordRecTy>(T2))
    return resolveRecordTypes(RecTy1, RecTy2);
}

if (T1->typeIsConvertibleTo(T2))
  return T2;
if (T2->typeIsConvertibleTo(T1))
  return T1;

if (ListRecTy *ListTy1 = dyn_cast<ListRecTy>(T1)) {
  if (ListRecTy *ListTy2 = dyn_cast<ListRecTy>(T2)) {
    RecTy* NewType = resolveTypes(ListTy1->getElementType(),
                                  ListTy2->getElementType());
    if (NewType)
      return NewType->getListTy();
  }
}

return nullptr;
279}

281//===----------------------------------------------------------------------===//
282//    Initializer implementations
283//===----------------------------------------------------------------------===//

285void Init::anchor() {}

287#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
288LLVM_DUMP_METHOD__attribute__((noinline)) __attribute__((__used__)) void Init::dump() const { return print(errs()); }
289#endif

291UnsetInit *UnsetInit::get() {
static UnsetInit TheInit;
return &TheInit;
294}

296Init *UnsetInit::getCastTo(RecTy *Ty) const {
return const_cast<UnsetInit *>(this);
298}

300Init *UnsetInit::convertInitializerTo(RecTy *Ty) const {
return const_cast<UnsetInit *>(this);
302}

304BitInit *BitInit::get(bool V) {
static BitInit True(true);
static BitInit False(false);

return V ? &True : &False;
309}

311Init *BitInit::convertInitializerTo(RecTy *Ty) const {
if (isa<BitRecTy>(Ty))
  return const_cast<BitInit *>(this);

if (isa<IntRecTy>(Ty))
  return IntInit::get(getValue());

if (auto *BRT = dyn_cast<BitsRecTy>(Ty)) {
  // Can only convert single bit.
  if (BRT->getNumBits() == 1)
    return BitsInit::get(const_cast<BitInit *>(this));
}

return nullptr;
325}

327static void
328ProfileBitsInit(FoldingSetNodeID &ID, ArrayRef<Init *> Range) {
ID.AddInteger(Range.size());

for (Init *I : Range)
  ID.AddPointer(I);
333}

335BitsInit *BitsInit::get(ArrayRef<Init *> Range) {
static FoldingSet<BitsInit> ThePool;

FoldingSetNodeID ID;
ProfileBitsInit(ID, Range);

void *IP = nullptr;
if (BitsInit *I = ThePool.FindNodeOrInsertPos(ID, IP))
  return I;

void *Mem = Allocator.Allocate(totalSizeToAlloc<Init *>(Range.size()),
                               alignof(BitsInit));
BitsInit *I = new(Mem) BitsInit(Range.size());
std::uninitialized_copy(Range.begin(), Range.end(),
                        I->getTrailingObjects<Init *>());
ThePool.InsertNode(I, IP);
return I;
352}

354void BitsInit::Profile(FoldingSetNodeID &ID) const {
ProfileBitsInit(ID, makeArrayRef(getTrailingObjects<Init *>(), NumBits));
356}

358Init *BitsInit::convertInitializerTo(RecTy *Ty) const {
if (isa<BitRecTy>(Ty)) {
  if (getNumBits() != 1) return nullptr; // Only accept if just one bit!
  return getBit(0);
}

if (auto *BRT = dyn_cast<BitsRecTy>(Ty)) {
  // If the number of bits is right, return it.  Otherwise we need to expand
  // or truncate.
  if (getNumBits() != BRT->getNumBits()) return nullptr;
  return const_cast<BitsInit *>(this);
}

if (isa<IntRecTy>(Ty)) {
  int64_t Result = 0;
  for (unsigned i = 0, e = getNumBits(); i != e; ++i)
    if (auto *Bit = dyn_cast<BitInit>(getBit(i)))
      Result |= static_cast<int64_t>(Bit->getValue()) << i;
    else
      return nullptr;
  return IntInit::get(Result);
}

return nullptr;
382}

384Init *
385BitsInit::convertInitializerBitRange(ArrayRef<unsigned> Bits) const {
SmallVector<Init *, 16> NewBits(Bits.size());

for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
  if (Bits[i] >= getNumBits())
    return nullptr;
  NewBits[i] = getBit(Bits[i]);
}
return BitsInit::get(NewBits);
394}

396bool BitsInit::isConcrete() const {
for (unsigned i = 0, e = getNumBits(); i != e; ++i) {
  if (!getBit(i)->isConcrete())
    return false;
}
return true;
402}

404std::string BitsInit::getAsString() const {
std::string Result = "{ ";
for (unsigned i = 0, e = getNumBits(); i != e; ++i) {
  if (i) Result += ", ";
  if (Init *Bit = getBit(e-i-1))
    Result += Bit->getAsString();
  else
    Result += "*";
}
return Result + " }";
414}

416// resolveReferences - If there are any field references that refer to fields
417// that have been filled in, we can propagate the values now.
418Init *BitsInit::resolveReferences(Resolver &R) const {
bool Changed = false;
SmallVector<Init *, 16> NewBits(getNumBits());

Init *CachedBitVarRef = nullptr;
Init *CachedBitVarResolved = nullptr;
1
'CachedBitVarResolved' initialized to a null pointer value→

for (unsigned i = 0, e = getNumBits(); i != e; ++i) {
2
←
Assuming 'i' is not equal to 'e'→
3
←
Loop condition is true.  Entering loop body→
  Init *CurBit = getBit(i);
  Init *NewBit = CurBit;

  if (VarBitInit *CurBitVar = dyn_cast<VarBitInit>(CurBit)) {
4
←
Taking true branch→
    if (CurBitVar->getBitVar() != CachedBitVarRef) {
5
←
Assuming the condition is false→
6
←
Taking false branch→
      CachedBitVarRef = CurBitVar->getBitVar();
      CachedBitVarResolved = CachedBitVarRef->resolveReferences(R);
    }

    NewBit = CachedBitVarResolved->getBit(CurBitVar->getBitNum());
7
←
Called C++ object pointer is null
  } else {
    // getBit(0) implicitly converts int and bits<1> values to bit.
    NewBit = CurBit->resolveReferences(R)->getBit(0);
  }

  if (isa<UnsetInit>(NewBit) && R.keepUnsetBits())
    NewBit = CurBit;
  NewBits[i] = NewBit;
  Changed |= CurBit != NewBit;
}

if (Changed)
  return BitsInit::get(NewBits);

return const_cast<BitsInit *>(this);
451}

453IntInit *IntInit::get(int64_t V) {
static DenseMap<int64_t, IntInit*> ThePool;

IntInit *&I = ThePool[V];
if (!I) I = new(Allocator) IntInit(V);
return I;
459}

461std::string IntInit::getAsString() const {
return itostr(Value);
463}

465static bool canFitInBitfield(int64_t Value, unsigned NumBits) {
// For example, with NumBits == 4, we permit Values from [-7 .. 15].
return (NumBits >= sizeof(Value) * 8) ||
       (Value >> NumBits == 0) || (Value >> (NumBits-1) == -1);
469}

471Init *IntInit::convertInitializerTo(RecTy *Ty) const {
if (isa<IntRecTy>(Ty))
  return const_cast<IntInit *>(this);

if (isa<BitRecTy>(Ty)) {
  int64_t Val = getValue();
  if (Val != 0 && Val != 1) return nullptr;  // Only accept 0 or 1 for a bit!
  return BitInit::get(Val != 0);
}

if (auto *BRT = dyn_cast<BitsRecTy>(Ty)) {
  int64_t Value = getValue();
  // Make sure this bitfield is large enough to hold the integer value.
  if (!canFitInBitfield(Value, BRT->getNumBits()))
    return nullptr;

  SmallVector<Init *, 16> NewBits(BRT->getNumBits());
  for (unsigned i = 0; i != BRT->getNumBits(); ++i)
    NewBits[i] = BitInit::get(Value & ((i < 64) ? (1LL << i) : 0));

  return BitsInit::get(NewBits);
}

return nullptr;
495}

497Init *
498IntInit::convertInitializerBitRange(ArrayRef<unsigned> Bits) const {
SmallVector<Init *, 16> NewBits(Bits.size());

for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
  if (Bits[i] >= 64)
    return nullptr;

  NewBits[i] = BitInit::get(Value & (INT64_C(1)1L << Bits[i]));
}
return BitsInit::get(NewBits);
508}

510CodeInit *CodeInit::get(StringRef V) {
static StringMap<CodeInit*, BumpPtrAllocator &> ThePool(Allocator);

auto &Entry = *ThePool.insert(std::make_pair(V, nullptr)).first;
if (!Entry.second)
  Entry.second = new(Allocator) CodeInit(Entry.getKey());
return Entry.second;
517}

519StringInit *StringInit::get(StringRef V) {
static StringMap<StringInit*, BumpPtrAllocator &> ThePool(Allocator);

auto &Entry = *ThePool.insert(std::make_pair(V, nullptr)).first;
if (!Entry.second)
  Entry.second = new(Allocator) StringInit(Entry.getKey());
return Entry.second;
526}

528Init *StringInit::convertInitializerTo(RecTy *Ty) const {
if (isa<StringRecTy>(Ty))
  return const_cast<StringInit *>(this);
if (isa<CodeRecTy>(Ty))
  return CodeInit::get(getValue());

return nullptr;
535}

537Init *CodeInit::convertInitializerTo(RecTy *Ty) const {
if (isa<CodeRecTy>(Ty))
  return const_cast<CodeInit *>(this);
if (isa<StringRecTy>(Ty))
  return StringInit::get(getValue());

return nullptr;
544}

546static void ProfileListInit(FoldingSetNodeID &ID,
                          ArrayRef<Init *> Range,
                          RecTy *EltTy) {
ID.AddInteger(Range.size());
ID.AddPointer(EltTy);

for (Init *I : Range)
  ID.AddPointer(I);
554}

556ListInit *ListInit::get(ArrayRef<Init *> Range, RecTy *EltTy) {
static FoldingSet<ListInit> ThePool;

FoldingSetNodeID ID;
ProfileListInit(ID, Range, EltTy);

void *IP = nullptr;
if (ListInit *I = ThePool.FindNodeOrInsertPos(ID, IP))
  return I;

assert(Range.empty() || !isa<TypedInit>(Range[0]) ||((Range.empty() || !isa<TypedInit>(Range[0]) || cast<
TypedInit>(Range[0])->getType()->typeIsConvertibleTo
(EltTy)) ? static_cast<void> (0) : __assert_fail ("Range.empty() || !isa<TypedInit>(Range[0]) || cast<TypedInit>(Range[0])->getType()->typeIsConvertibleTo(EltTy)"
, "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 567, __PRETTY_FUNCTION__))
       cast<TypedInit>(Range[0])->getType()->typeIsConvertibleTo(EltTy))((Range.empty() || !isa<TypedInit>(Range[0]) || cast<
TypedInit>(Range[0])->getType()->typeIsConvertibleTo
(EltTy)) ? static_cast<void> (0) : __assert_fail ("Range.empty() || !isa<TypedInit>(Range[0]) || cast<TypedInit>(Range[0])->getType()->typeIsConvertibleTo(EltTy)"
, "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 567, __PRETTY_FUNCTION__));

void *Mem = Allocator.Allocate(totalSizeToAlloc<Init *>(Range.size()),
                               alignof(ListInit));
ListInit *I = new(Mem) ListInit(Range.size(), EltTy);
std::uninitialized_copy(Range.begin(), Range.end(),
                        I->getTrailingObjects<Init *>());
ThePool.InsertNode(I, IP);
return I;
576}

578void ListInit::Profile(FoldingSetNodeID &ID) const {
RecTy *EltTy = cast<ListRecTy>(getType())->getElementType();

ProfileListInit(ID, getValues(), EltTy);
582}

584Init *ListInit::convertInitializerTo(RecTy *Ty) const {
if (getType() == Ty)
  return const_cast<ListInit*>(this);

if (auto *LRT = dyn_cast<ListRecTy>(Ty)) {
  SmallVector<Init*, 8> Elements;
  Elements.reserve(getValues().size());

  // Verify that all of the elements of the list are subclasses of the
  // appropriate class!
  bool Changed = false;
  RecTy *ElementType = LRT->getElementType();
  for (Init *I : getValues())
    if (Init *CI = I->convertInitializerTo(ElementType)) {
      Elements.push_back(CI);
      if (CI != I)
        Changed = true;
    } else
      return nullptr;

  if (!Changed)
    return const_cast<ListInit*>(this);
  return ListInit::get(Elements, ElementType);
}

return nullptr;
610}

612Init *ListInit::convertInitListSlice(ArrayRef<unsigned> Elements) const {
SmallVector<Init*, 8> Vals;
Vals.reserve(Elements.size());
for (unsigned Element : Elements) {
  if (Element >= size())
    return nullptr;
  Vals.push_back(getElement(Element));
}
return ListInit::get(Vals, getElementType());
621}

623Record *ListInit::getElementAsRecord(unsigned i) const {
assert(i < NumValues && "List element index out of range!")((i < NumValues && "List element index out of range!"
) ? static_cast<void> (0) : __assert_fail ("i < NumValues && \"List element index out of range!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 624, __PRETTY_FUNCTION__));
DefInit *DI = dyn_cast<DefInit>(getElement(i));
if (!DI)
  PrintFatalError("Expected record in list!");
return DI->getDef();
629}

631Init *ListInit::resolveReferences(Resolver &R) const {
SmallVector<Init*, 8> Resolved;
Resolved.reserve(size());
bool Changed = false;

for (Init *CurElt : getValues()) {
  Init *E = CurElt->resolveReferences(R);
  Changed |= E != CurElt;
  Resolved.push_back(E);
}

if (Changed)
  return ListInit::get(Resolved, getElementType());
return const_cast<ListInit *>(this);
645}

647bool ListInit::isConcrete() const {
for (Init *Element : *this) {
  if (!Element->isConcrete())
    return false;
}
return true;
653}

655std::string ListInit::getAsString() const {
std::string Result = "[";
const char *sep = "";
for (Init *Element : *this) {
  Result += sep;
  sep = ", ";
  Result += Element->getAsString();
}
return Result + "]";
664}

666Init *OpInit::getBit(unsigned Bit) const {
if (getType() == BitRecTy::get())
  return const_cast<OpInit*>(this);
return VarBitInit::get(const_cast<OpInit*>(this), Bit);
670}

672static void
673ProfileUnOpInit(FoldingSetNodeID &ID, unsigned Opcode, Init *Op, RecTy *Type) {
ID.AddInteger(Opcode);
ID.AddPointer(Op);
ID.AddPointer(Type);
677}

679UnOpInit *UnOpInit::get(UnaryOp Opc, Init *LHS, RecTy *Type) {
static FoldingSet<UnOpInit> ThePool;

FoldingSetNodeID ID;
ProfileUnOpInit(ID, Opc, LHS, Type);

void *IP = nullptr;
if (UnOpInit *I = ThePool.FindNodeOrInsertPos(ID, IP))
  return I;

UnOpInit *I = new(Allocator) UnOpInit(Opc, LHS, Type);
ThePool.InsertNode(I, IP);
return I;
692}

694void UnOpInit::Profile(FoldingSetNodeID &ID) const {
ProfileUnOpInit(ID, getOpcode(), getOperand(), getType());
696}

698Init *UnOpInit::Fold(Record *CurRec, bool IsFinal) const {
switch (getOpcode()) {
case CAST:
  if (isa<StringRecTy>(getType())) {
    if (StringInit *LHSs = dyn_cast<StringInit>(LHS))
      return LHSs;

    if (DefInit *LHSd = dyn_cast<DefInit>(LHS))
      return StringInit::get(LHSd->getAsString());

    if (IntInit *LHSi = dyn_cast<IntInit>(LHS))
      return StringInit::get(LHSi->getAsString());
  } else if (isa<RecordRecTy>(getType())) {
    if (StringInit *Name = dyn_cast<StringInit>(LHS)) {
      if (!CurRec && !IsFinal)
        break;
      assert(CurRec && "NULL pointer")((CurRec && "NULL pointer") ? static_cast<void>
 (0) : __assert_fail ("CurRec && \"NULL pointer\"", "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 714, __PRETTY_FUNCTION__));
      Record *D;

      // Self-references are allowed, but their resolution is delayed until
      // the final resolve to ensure that we get the correct type for them.
      if (Name == CurRec->getNameInit()) {
        if (!IsFinal)
          break;
        D = CurRec;
      } else {
        D = CurRec->getRecords().getDef(Name->getValue());
        if (!D) {
          if (IsFinal)
            PrintFatalError(CurRec->getLoc(),
                            Twine("Undefined reference to record: '") +
                            Name->getValue() + "'\n");
          break;
        }
      }

      DefInit *DI = DefInit::get(D);
      if (!DI->getType()->typeIsA(getType())) {
        PrintFatalError(CurRec->getLoc(),
                        Twine("Expected type '") +
                        getType()->getAsString() + "', got '" +
                        DI->getType()->getAsString() + "' in: " +
                        getAsString() + "\n");
      }
      return DI;
    }
  }

  if (Init *NewInit = LHS->convertInitializerTo(getType()))
    return NewInit;
  break;

case HEAD:
  if (ListInit *LHSl = dyn_cast<ListInit>(LHS)) {
    assert(!LHSl->empty() && "Empty list in head")((!LHSl->empty() && "Empty list in head") ? static_cast
<void> (0) : __assert_fail ("!LHSl->empty() && \"Empty list in head\""
, "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 752, __PRETTY_FUNCTION__));
    return LHSl->getElement(0);
  }
  break;

case TAIL:
  if (ListInit *LHSl = dyn_cast<ListInit>(LHS)) {
    assert(!LHSl->empty() && "Empty list in tail")((!LHSl->empty() && "Empty list in tail") ? static_cast
<void> (0) : __assert_fail ("!LHSl->empty() && \"Empty list in tail\""
, "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 759, __PRETTY_FUNCTION__));
    // Note the +1.  We can't just pass the result of getValues()
    // directly.
    return ListInit::get(LHSl->getValues().slice(1), LHSl->getElementType());
  }
  break;

case SIZE:
  if (ListInit *LHSl = dyn_cast<ListInit>(LHS))
    return IntInit::get(LHSl->size());
  break;

case EMPTY:
  if (ListInit *LHSl = dyn_cast<ListInit>(LHS))
    return IntInit::get(LHSl->empty());
  if (StringInit *LHSs = dyn_cast<StringInit>(LHS))
    return IntInit::get(LHSs->getValue().empty());
  break;
}
return const_cast<UnOpInit *>(this);
779}

781Init *UnOpInit::resolveReferences(Resolver &R) const {
Init *lhs = LHS->resolveReferences(R);

if (LHS != lhs || (R.isFinal() && getOpcode() == CAST))
  return (UnOpInit::get(getOpcode(), lhs, getType()))
      ->Fold(R.getCurrentRecord(), R.isFinal());
return const_cast<UnOpInit *>(this);
788}

790std::string UnOpInit::getAsString() const {
std::string Result;
switch (getOpcode()) {
case CAST: Result = "!cast<" + getType()->getAsString() + ">"; break;
case HEAD: Result = "!head"; break;
case TAIL: Result = "!tail"; break;
case SIZE: Result = "!size"; break;
case EMPTY: Result = "!empty"; break;
}
return Result + "(" + LHS->getAsString() + ")";
800}

802static void
803ProfileBinOpInit(FoldingSetNodeID &ID, unsigned Opcode, Init *LHS, Init *RHS,
               RecTy *Type) {
ID.AddInteger(Opcode);
ID.AddPointer(LHS);
ID.AddPointer(RHS);
ID.AddPointer(Type);
809}

811BinOpInit *BinOpInit::get(BinaryOp Opc, Init *LHS,
                        Init *RHS, RecTy *Type) {
static FoldingSet<BinOpInit> ThePool;

FoldingSetNodeID ID;
ProfileBinOpInit(ID, Opc, LHS, RHS, Type);

void *IP = nullptr;
if (BinOpInit *I = ThePool.FindNodeOrInsertPos(ID, IP))
  return I;

BinOpInit *I = new(Allocator) BinOpInit(Opc, LHS, RHS, Type);
ThePool.InsertNode(I, IP);
return I;
825}

827void BinOpInit::Profile(FoldingSetNodeID &ID) const {
ProfileBinOpInit(ID, getOpcode(), getLHS(), getRHS(), getType());
829}

831static StringInit *ConcatStringInits(const StringInit *I0,
                                   const StringInit *I1) {
SmallString<80> Concat(I0->getValue());
Concat.append(I1->getValue());
return StringInit::get(Concat);
836}

838Init *BinOpInit::getStrConcat(Init *I0, Init *I1) {
// Shortcut for the common case of concatenating two strings.
if (const StringInit *I0s = dyn_cast<StringInit>(I0))
  if (const StringInit *I1s = dyn_cast<StringInit>(I1))
    return ConcatStringInits(I0s, I1s);
return BinOpInit::get(BinOpInit::STRCONCAT, I0, I1, StringRecTy::get());
844}

846Init *BinOpInit::Fold(Record *CurRec) const {
switch (getOpcode()) {
case CONCAT: {
  DagInit *LHSs = dyn_cast<DagInit>(LHS);
  DagInit *RHSs = dyn_cast<DagInit>(RHS);
  if (LHSs && RHSs) {
    DefInit *LOp = dyn_cast<DefInit>(LHSs->getOperator());
    DefInit *ROp = dyn_cast<DefInit>(RHSs->getOperator());
    if (!LOp || !ROp)
      break;
    if (LOp->getDef() != ROp->getDef()) {
      PrintFatalError(Twine("Concatenated Dag operators do not match: '") +
                      LHSs->getAsString() + "' vs. '" + RHSs->getAsString() +
                      "'");
    }
    SmallVector<Init*, 8> Args;
    SmallVector<StringInit*, 8> ArgNames;
    for (unsigned i = 0, e = LHSs->getNumArgs(); i != e; ++i) {
      Args.push_back(LHSs->getArg(i));
      ArgNames.push_back(LHSs->getArgName(i));
    }
    for (unsigned i = 0, e = RHSs->getNumArgs(); i != e; ++i) {
      Args.push_back(RHSs->getArg(i));
      ArgNames.push_back(RHSs->getArgName(i));
    }
    return DagInit::get(LHSs->getOperator(), nullptr, Args, ArgNames);
  }
  break;
}
case LISTCONCAT: {
  ListInit *LHSs = dyn_cast<ListInit>(LHS);
  ListInit *RHSs = dyn_cast<ListInit>(RHS);
  if (LHSs && RHSs) {
    SmallVector<Init *, 8> Args;
    Args.insert(Args.end(), LHSs->begin(), LHSs->end());
    Args.insert(Args.end(), RHSs->begin(), RHSs->end());
    return ListInit::get(Args, LHSs->getElementType());
  }
  break;
}
case STRCONCAT: {
  StringInit *LHSs = dyn_cast<StringInit>(LHS);
  StringInit *RHSs = dyn_cast<StringInit>(RHS);
  if (LHSs && RHSs)
    return ConcatStringInits(LHSs, RHSs);
  break;
}
case EQ:
case NE:
case LE:
case LT:
case GE:
case GT: {
  // try to fold eq comparison for 'bit' and 'int', otherwise fallback
  // to string objects.
  IntInit *L =
      dyn_cast_or_null<IntInit>(LHS->convertInitializerTo(IntRecTy::get()));
  IntInit *R =
      dyn_cast_or_null<IntInit>(RHS->convertInitializerTo(IntRecTy::get()));

  if (L && R) {
    bool Result;
    switch (getOpcode()) {
    case EQ: Result = L->getValue() == R->getValue(); break;
    case NE: Result = L->getValue() != R->getValue(); break;
    case LE: Result = L->getValue() <= R->getValue(); break;
    case LT: Result = L->getValue() < R->getValue(); break;
    case GE: Result = L->getValue() >= R->getValue(); break;
    case GT: Result = L->getValue() > R->getValue(); break;
    default: llvm_unreachable("unhandled comparison")::llvm::llvm_unreachable_internal("unhandled comparison", "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 915);
    }
    return BitInit::get(Result);
  }

  if (getOpcode() == EQ || getOpcode() == NE) {
    StringInit *LHSs = dyn_cast<StringInit>(LHS);
    StringInit *RHSs = dyn_cast<StringInit>(RHS);

    // Make sure we've resolved
    if (LHSs && RHSs) {
      bool Equal = LHSs->getValue() == RHSs->getValue();
      return BitInit::get(getOpcode() == EQ ? Equal : !Equal);
    }
  }

  break;
}
case ADD:
case AND:
case OR:
case SHL:
case SRA:
case SRL: {
  IntInit *LHSi =
    dyn_cast_or_null<IntInit>(LHS->convertInitializerTo(IntRecTy::get()));
  IntInit *RHSi =
    dyn_cast_or_null<IntInit>(RHS->convertInitializerTo(IntRecTy::get()));
  if (LHSi && RHSi) {
    int64_t LHSv = LHSi->getValue(), RHSv = RHSi->getValue();
    int64_t Result;
    switch (getOpcode()) {
    default: llvm_unreachable("Bad opcode!")::llvm::llvm_unreachable_internal("Bad opcode!", "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 947);
    case ADD: Result = LHSv +  RHSv; break;
    case AND: Result = LHSv &  RHSv; break;
    case OR: Result = LHSv | RHSv; break;
    case SHL: Result = LHSv << RHSv; break;
    case SRA: Result = LHSv >> RHSv; break;
    case SRL: Result = (uint64_t)LHSv >> (uint64_t)RHSv; break;
    }
    return IntInit::get(Result);
  }
  break;
}
}
return const_cast<BinOpInit *>(this);
961}

963Init *BinOpInit::resolveReferences(Resolver &R) const {
Init *lhs = LHS->resolveReferences(R);
Init *rhs = RHS->resolveReferences(R);

if (LHS != lhs || RHS != rhs)
  return (BinOpInit::get(getOpcode(), lhs, rhs, getType()))
      ->Fold(R.getCurrentRecord());
return const_cast<BinOpInit *>(this);
971}

973std::string BinOpInit::getAsString() const {
std::string Result;
switch (getOpcode()) {
case CONCAT: Result = "!con"; break;
case ADD: Result = "!add"; break;
case AND: Result = "!and"; break;
case OR: Result = "!or"; break;
case SHL: Result = "!shl"; break;
case SRA: Result = "!sra"; break;
case SRL: Result = "!srl"; break;
case EQ: Result = "!eq"; break;
case NE: Result = "!ne"; break;
case LE: Result = "!le"; break;
case LT: Result = "!lt"; break;
case GE: Result = "!ge"; break;
case GT: Result = "!gt"; break;
case LISTCONCAT: Result = "!listconcat"; break;
case STRCONCAT: Result = "!strconcat"; break;
}
return Result + "(" + LHS->getAsString() + ", " + RHS->getAsString() + ")";
993}

995static void
996ProfileTernOpInit(FoldingSetNodeID &ID, unsigned Opcode, Init *LHS, Init *MHS,
                Init *RHS, RecTy *Type) {
ID.AddInteger(Opcode);
ID.AddPointer(LHS);
ID.AddPointer(MHS);
ID.AddPointer(RHS);
ID.AddPointer(Type);
1003}

1005TernOpInit *TernOpInit::get(TernaryOp Opc, Init *LHS, Init *MHS, Init *RHS,
                          RecTy *Type) {
static FoldingSet<TernOpInit> ThePool;

FoldingSetNodeID ID;
ProfileTernOpInit(ID, Opc, LHS, MHS, RHS, Type);

void *IP = nullptr;
if (TernOpInit *I = ThePool.FindNodeOrInsertPos(ID, IP))
  return I;

TernOpInit *I = new(Allocator) TernOpInit(Opc, LHS, MHS, RHS, Type);
ThePool.InsertNode(I, IP);
return I;
1019}

1021void TernOpInit::Profile(FoldingSetNodeID &ID) const {
ProfileTernOpInit(ID, getOpcode(), getLHS(), getMHS(), getRHS(), getType());
1023}

1025static Init *ForeachApply(Init *LHS, Init *MHSe, Init *RHS, Record *CurRec) {
MapResolver R(CurRec);
R.set(LHS, MHSe);
return RHS->resolveReferences(R);
1029}

1031static Init *ForeachDagApply(Init *LHS, DagInit *MHSd, Init *RHS,
                           Record *CurRec) {
bool Change = false;
Init *Val = ForeachApply(LHS, MHSd->getOperator(), RHS, CurRec);
if (Val != MHSd->getOperator())
  Change = true;

SmallVector<std::pair<Init *, StringInit *>, 8> NewArgs;
for (unsigned int i = 0; i < MHSd->getNumArgs(); ++i) {
  Init *Arg = MHSd->getArg(i);
  Init *NewArg;
  StringInit *ArgName = MHSd->getArgName(i);

  if (DagInit *Argd = dyn_cast<DagInit>(Arg))
    NewArg = ForeachDagApply(LHS, Argd, RHS, CurRec);
  else
    NewArg = ForeachApply(LHS, Arg, RHS, CurRec);

  NewArgs.push_back(std::make_pair(NewArg, ArgName));
  if (Arg != NewArg)
    Change = true;
}

if (Change)
  return DagInit::get(Val, nullptr, NewArgs);
return MHSd;
1057}

1059// Applies RHS to all elements of MHS, using LHS as a temp variable.
1060static Init *ForeachHelper(Init *LHS, Init *MHS, Init *RHS, RecTy *Type,
                         Record *CurRec) {
if (DagInit *MHSd = dyn_cast<DagInit>(MHS))
  return ForeachDagApply(LHS, MHSd, RHS, CurRec);

if (ListInit *MHSl = dyn_cast<ListInit>(MHS)) {
  SmallVector<Init *, 8> NewList(MHSl->begin(), MHSl->end());

  for (Init *&Item : NewList) {
    Init *NewItem = ForeachApply(LHS, Item, RHS, CurRec);
    if (NewItem != Item)
      Item = NewItem;
  }
  return ListInit::get(NewList, cast<ListRecTy>(Type)->getElementType());
}

return nullptr;
1077}

1079Init *TernOpInit::Fold(Record *CurRec) const {
switch (getOpcode()) {
case SUBST: {
  DefInit *LHSd = dyn_cast<DefInit>(LHS);
  VarInit *LHSv = dyn_cast<VarInit>(LHS);
  StringInit *LHSs = dyn_cast<StringInit>(LHS);

  DefInit *MHSd = dyn_cast<DefInit>(MHS);
  VarInit *MHSv = dyn_cast<VarInit>(MHS);
  StringInit *MHSs = dyn_cast<StringInit>(MHS);

  DefInit *RHSd = dyn_cast<DefInit>(RHS);
  VarInit *RHSv = dyn_cast<VarInit>(RHS);
  StringInit *RHSs = dyn_cast<StringInit>(RHS);

  if (LHSd && MHSd && RHSd) {
    Record *Val = RHSd->getDef();
    if (LHSd->getAsString() == RHSd->getAsString())
      Val = MHSd->getDef();
    return DefInit::get(Val);
  }
  if (LHSv && MHSv && RHSv) {
    std::string Val = RHSv->getName();
    if (LHSv->getAsString() == RHSv->getAsString())
      Val = MHSv->getName();
    return VarInit::get(Val, getType());
  }
  if (LHSs && MHSs && RHSs) {
    std::string Val = RHSs->getValue();

    std::string::size_type found;
    std::string::size_type idx = 0;
    while (true) {
      found = Val.find(LHSs->getValue(), idx);
      if (found == std::string::npos)
        break;
      Val.replace(found, LHSs->getValue().size(), MHSs->getValue());
      idx = found + MHSs->getValue().size();
    }

    return StringInit::get(Val);
  }
  break;
}

case FOREACH: {
  if (Init *Result = ForeachHelper(LHS, MHS, RHS, getType(), CurRec))
    return Result;
  break;
}

case IF: {
  if (IntInit *LHSi = dyn_cast_or_null<IntInit>(
                          LHS->convertInitializerTo(IntRecTy::get()))) {
    if (LHSi->getValue())
      return MHS;
    return RHS;
  }
  break;
}

case DAG: {
  ListInit *MHSl = dyn_cast<ListInit>(MHS);
  ListInit *RHSl = dyn_cast<ListInit>(RHS);
  bool MHSok = MHSl || isa<UnsetInit>(MHS);
  bool RHSok = RHSl || isa<UnsetInit>(RHS);

  if (isa<UnsetInit>(MHS) && isa<UnsetInit>(RHS))
    break; // Typically prevented by the parser, but might happen with template args

  if (MHSok && RHSok && (!MHSl || !RHSl || MHSl->size() == RHSl->size())) {
    SmallVector<std::pair<Init *, StringInit *>, 8> Children;
    unsigned Size = MHSl ? MHSl->size() : RHSl->size();
    for (unsigned i = 0; i != Size; ++i) {
      Init *Node = MHSl ? MHSl->getElement(i) : UnsetInit::get();
      Init *Name = RHSl ? RHSl->getElement(i) : UnsetInit::get();
      if (!isa<StringInit>(Name) && !isa<UnsetInit>(Name))
        return const_cast<TernOpInit *>(this);
      Children.emplace_back(Node, dyn_cast<StringInit>(Name));
    }
    return DagInit::get(LHS, nullptr, Children);
  }
  break;
}
}

return const_cast<TernOpInit *>(this);
1166}

1168Init *TernOpInit::resolveReferences(Resolver &R) const {
Init *lhs = LHS->resolveReferences(R);

if (getOpcode() == IF && lhs != LHS) {
  if (IntInit *Value = dyn_cast_or_null<IntInit>(
                           lhs->convertInitializerTo(IntRecTy::get()))) {
    // Short-circuit
    if (Value->getValue())
      return MHS->resolveReferences(R);
    return RHS->resolveReferences(R);
  }
}

Init *mhs = MHS->resolveReferences(R);
Init *rhs;

if (getOpcode() == FOREACH) {
  ShadowResolver SR(R);
  SR.addShadow(lhs);
  rhs = RHS->resolveReferences(SR);
} else {
  rhs = RHS->resolveReferences(R);
}

if (LHS != lhs || MHS != mhs || RHS != rhs)
  return (TernOpInit::get(getOpcode(), lhs, mhs, rhs, getType()))
      ->Fold(R.getCurrentRecord());
return const_cast<TernOpInit *>(this);
1196}

1198std::string TernOpInit::getAsString() const {
std::string Result;
bool UnquotedLHS = false;
switch (getOpcode()) {
case SUBST: Result = "!subst"; break;
case FOREACH: Result = "!foreach"; UnquotedLHS = true; break;
case IF: Result = "!if"; break;
case DAG: Result = "!dag"; break;
}
return (Result + "(" +
        (UnquotedLHS ? LHS->getAsUnquotedString() : LHS->getAsString()) +
        ", " + MHS->getAsString() + ", " + RHS->getAsString() + ")");
1210}

1212static void ProfileFoldOpInit(FoldingSetNodeID &ID, Init *A, Init *B,
                            Init *Start, Init *List, Init *Expr,
                            RecTy *Type) {
ID.AddPointer(Start);
ID.AddPointer(List);
ID.AddPointer(A);
ID.AddPointer(B);
ID.AddPointer(Expr);
ID.AddPointer(Type);
1221}

1223FoldOpInit *FoldOpInit::get(Init *Start, Init *List, Init *A, Init *B,
                          Init *Expr, RecTy *Type) {
static FoldingSet<FoldOpInit> ThePool;

FoldingSetNodeID ID;
ProfileFoldOpInit(ID, Start, List, A, B, Expr, Type);

void *IP = nullptr;
if (FoldOpInit *I = ThePool.FindNodeOrInsertPos(ID, IP))
  return I;

FoldOpInit *I = new (Allocator) FoldOpInit(Start, List, A, B, Expr, Type);
ThePool.InsertNode(I, IP);
return I;
1237}

1239void FoldOpInit::Profile(FoldingSetNodeID &ID) const {
ProfileFoldOpInit(ID, Start, List, A, B, Expr, getType());
1241}

1243Init *FoldOpInit::Fold(Record *CurRec) const {
if (ListInit *LI = dyn_cast<ListInit>(List)) {
  Init *Accum = Start;
  for (Init *Elt : *LI) {
    MapResolver R(CurRec);
    R.set(A, Accum);
    R.set(B, Elt);
    Accum = Expr->resolveReferences(R);
  }
  return Accum;
}
return const_cast<FoldOpInit *>(this);
1255}

1257Init *FoldOpInit::resolveReferences(Resolver &R) const {
Init *NewStart = Start->resolveReferences(R);
Init *NewList = List->resolveReferences(R);
ShadowResolver SR(R);
SR.addShadow(A);
SR.addShadow(B);
Init *NewExpr = Expr->resolveReferences(SR);

if (Start == NewStart && List == NewList && Expr == NewExpr)
  return const_cast<FoldOpInit *>(this);

return get(NewStart, NewList, A, B, NewExpr, getType())
    ->Fold(R.getCurrentRecord());
1270}

1272Init *FoldOpInit::getBit(unsigned Bit) const {
return VarBitInit::get(const_cast<FoldOpInit *>(this), Bit);
1274}

1276std::string FoldOpInit::getAsString() const {
return (Twine("!foldl(") + Start->getAsString() + ", " + List->getAsString() +
        ", " + A->getAsUnquotedString() + ", " + B->getAsUnquotedString() +
        ", " + Expr->getAsString() + ")")
    .str();
1281}

1283static void ProfileIsAOpInit(FoldingSetNodeID &ID, RecTy *CheckType,
                           Init *Expr) {
ID.AddPointer(CheckType);
ID.AddPointer(Expr);
1287}

1289IsAOpInit *IsAOpInit::get(RecTy *CheckType, Init *Expr) {
static FoldingSet<IsAOpInit> ThePool;

FoldingSetNodeID ID;
ProfileIsAOpInit(ID, CheckType, Expr);

void *IP = nullptr;
if (IsAOpInit *I = ThePool.FindNodeOrInsertPos(ID, IP))
  return I;

IsAOpInit *I = new (Allocator) IsAOpInit(CheckType, Expr);
ThePool.InsertNode(I, IP);
return I;
1302}

1304void IsAOpInit::Profile(FoldingSetNodeID &ID) const {
ProfileIsAOpInit(ID, CheckType, Expr);
1306}

1308Init *IsAOpInit::Fold() const {
if (TypedInit *TI = dyn_cast<TypedInit>(Expr)) {
  // Is the expression type known to be (a subclass of) the desired type?
  if (TI->getType()->typeIsConvertibleTo(CheckType))
    return IntInit::get(1);

  if (isa<RecordRecTy>(CheckType)) {
    // If the target type is not a subclass of the expression type, or if
    // the expression has fully resolved to a record, we know that it can't
    // be of the required type.
    if (!CheckType->typeIsConvertibleTo(TI->getType()) || isa<DefInit>(Expr))
      return IntInit::get(0);
  } else {
    // We treat non-record types as not castable.
    return IntInit::get(0);
  }
}
return const_cast<IsAOpInit *>(this);
1326}

1328Init *IsAOpInit::resolveReferences(Resolver &R) const {
Init *NewExpr = Expr->resolveReferences(R);
if (Expr != NewExpr)
  return get(CheckType, NewExpr)->Fold();
return const_cast<IsAOpInit *>(this);
1333}

1335Init *IsAOpInit::getBit(unsigned Bit) const {
return VarBitInit::get(const_cast<IsAOpInit *>(this), Bit);
1337}

1339std::string IsAOpInit::getAsString() const {
return (Twine("!isa<") + CheckType->getAsString() + ">(" +
        Expr->getAsString() + ")")
    .str();
1343}

1345RecTy *TypedInit::getFieldType(StringInit *FieldName) const {
if (RecordRecTy *RecordType = dyn_cast<RecordRecTy>(getType())) {
  for (Record *Rec : RecordType->getClasses()) {
    if (RecordVal *Field = Rec->getValue(FieldName))
      return Field->getType();
  }
}
return nullptr;
1353}

1355Init *
1356TypedInit::convertInitializerTo(RecTy *Ty) const {
if (getType() == Ty || getType()->typeIsA(Ty))
  return const_cast<TypedInit *>(this);

if (isa<BitRecTy>(getType()) && isa<BitsRecTy>(Ty) &&
    cast<BitsRecTy>(Ty)->getNumBits() == 1)
  return BitsInit::get({const_cast<TypedInit *>(this)});

return nullptr;
1365}

1367Init *TypedInit::convertInitializerBitRange(ArrayRef<unsigned> Bits) const {
BitsRecTy *T = dyn_cast<BitsRecTy>(getType());
if (!T) return nullptr;  // Cannot subscript a non-bits variable.
unsigned NumBits = T->getNumBits();

SmallVector<Init *, 16> NewBits;
NewBits.reserve(Bits.size());
for (unsigned Bit : Bits) {
  if (Bit >= NumBits)
    return nullptr;

  NewBits.push_back(VarBitInit::get(const_cast<TypedInit *>(this), Bit));
}
return BitsInit::get(NewBits);
1381}

1383Init *TypedInit::getCastTo(RecTy *Ty) const {
// Handle the common case quickly
if (getType() == Ty || getType()->typeIsA(Ty))
  return const_cast<TypedInit *>(this);

if (Init *Converted = convertInitializerTo(Ty)) {
  assert(!isa<TypedInit>(Converted) ||((!isa<TypedInit>(Converted) || cast<TypedInit>(Converted
)->getType()->typeIsA(Ty)) ? static_cast<void> (0
) : __assert_fail ("!isa<TypedInit>(Converted) || cast<TypedInit>(Converted)->getType()->typeIsA(Ty)"
, "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 1390, __PRETTY_FUNCTION__))
         cast<TypedInit>(Converted)->getType()->typeIsA(Ty))((!isa<TypedInit>(Converted) || cast<TypedInit>(Converted
)->getType()->typeIsA(Ty)) ? static_cast<void> (0
) : __assert_fail ("!isa<TypedInit>(Converted) || cast<TypedInit>(Converted)->getType()->typeIsA(Ty)"
, "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 1390, __PRETTY_FUNCTION__));
  return Converted;
}

if (!getType()->typeIsConvertibleTo(Ty))
  return nullptr;

return UnOpInit::get(UnOpInit::CAST, const_cast<TypedInit *>(this), Ty)
    ->Fold(nullptr);
1399}

1401Init *TypedInit::convertInitListSlice(ArrayRef<unsigned> Elements) const {
ListRecTy *T = dyn_cast<ListRecTy>(getType());
if (!T) return nullptr;  // Cannot subscript a non-list variable.

if (Elements.size() == 1)
  return VarListElementInit::get(const_cast<TypedInit *>(this), Elements[0]);

SmallVector<Init*, 8> ListInits;
ListInits.reserve(Elements.size());
for (unsigned Element : Elements)
  ListInits.push_back(VarListElementInit::get(const_cast<TypedInit *>(this),
                                              Element));
return ListInit::get(ListInits, T->getElementType());
1414}


1417VarInit *VarInit::get(StringRef VN, RecTy *T) {
Init *Value = StringInit::get(VN);
return VarInit::get(Value, T);
1420}

1422VarInit *VarInit::get(Init *VN, RecTy *T) {
using Key = std::pair<RecTy *, Init *>;
static DenseMap<Key, VarInit*> ThePool;

Key TheKey(std::make_pair(T, VN));

VarInit *&I = ThePool[TheKey];
if (!I)
  I = new(Allocator) VarInit(VN, T);
return I;
1432}

1434StringRef VarInit::getName() const {
StringInit *NameString = cast<StringInit>(getNameInit());
return NameString->getValue();
1437}

1439Init *VarInit::getBit(unsigned Bit) const {
if (getType() == BitRecTy::get())
  return const_cast<VarInit*>(this);
return VarBitInit::get(const_cast<VarInit*>(this), Bit);
1443}

1445Init *VarInit::resolveReferences(Resolver &R) const {
if (Init *Val = R.resolve(VarName))
  return Val;
return const_cast<VarInit *>(this);
1449}

1451VarBitInit *VarBitInit::get(TypedInit *T, unsigned B) {
using Key = std::pair<TypedInit *, unsigned>;
static DenseMap<Key, VarBitInit*> ThePool;

Key TheKey(std::make_pair(T, B));

VarBitInit *&I = ThePool[TheKey];
if (!I)
  I = new(Allocator) VarBitInit(T, B);
return I;
1461}

1463std::string VarBitInit::getAsString() const {
return TI->getAsString() + "{" + utostr(Bit) + "}";
1465}

1467Init *VarBitInit::resolveReferences(Resolver &R) const {
Init *I = TI->resolveReferences(R);
if (TI != I)
  return I->getBit(getBitNum());

return const_cast<VarBitInit*>(this);
1473}

1475VarListElementInit *VarListElementInit::get(TypedInit *T,
                                          unsigned E) {
using Key = std::pair<TypedInit *, unsigned>;
static DenseMap<Key, VarListElementInit*> ThePool;

Key TheKey(std::make_pair(T, E));

VarListElementInit *&I = ThePool[TheKey];
if (!I) I = new(Allocator) VarListElementInit(T, E);
return I;
1485}

1487std::string VarListElementInit::getAsString() const {
return TI->getAsString() + "[" + utostr(Element) + "]";
1489}

1491Init *VarListElementInit::resolveReferences(Resolver &R) const {
Init *NewTI = TI->resolveReferences(R);
if (ListInit *List = dyn_cast<ListInit>(NewTI)) {
  // Leave out-of-bounds array references as-is. This can happen without
  // being an error, e.g. in the untaken "branch" of an !if expression.
  if (getElementNum() < List->size())
    return List->getElement(getElementNum());
}
if (NewTI != TI && isa<TypedInit>(NewTI))
  return VarListElementInit::get(cast<TypedInit>(NewTI), getElementNum());
return const_cast<VarListElementInit *>(this);
1502}

1504Init *VarListElementInit::getBit(unsigned Bit) const {
if (getType() == BitRecTy::get())
  return const_cast<VarListElementInit*>(this);
return VarBitInit::get(const_cast<VarListElementInit*>(this), Bit);
1508}

1510DefInit::DefInit(Record *D)
  : TypedInit(IK_DefInit, D->getType()), Def(D) {}

1513DefInit *DefInit::get(Record *R) {
return R->getDefInit();
1515}

1517Init *DefInit::convertInitializerTo(RecTy *Ty) const {
if (auto *RRT = dyn_cast<RecordRecTy>(Ty))
  if (getType()->typeIsConvertibleTo(RRT))
    return const_cast<DefInit *>(this);
return nullptr;
1522}

1524RecTy *DefInit::getFieldType(StringInit *FieldName) const {
if (const RecordVal *RV = Def->getValue(FieldName))
  return RV->getType();
return nullptr;
1528}

1530std::string DefInit::getAsString() const {
return Def->getName();
1532}

1534static void ProfileVarDefInit(FoldingSetNodeID &ID,
                            Record *Class,
                            ArrayRef<Init *> Args) {
ID.AddInteger(Args.size());
ID.AddPointer(Class);

for (Init *I : Args)
  ID.AddPointer(I);
1542}

1544VarDefInit *VarDefInit::get(Record *Class, ArrayRef<Init *> Args) {
static FoldingSet<VarDefInit> ThePool;

FoldingSetNodeID ID;
ProfileVarDefInit(ID, Class, Args);

void *IP = nullptr;
if (VarDefInit *I = ThePool.FindNodeOrInsertPos(ID, IP))
  return I;

void *Mem = Allocator.Allocate(totalSizeToAlloc<Init *>(Args.size()),
                               alignof(VarDefInit));
VarDefInit *I = new(Mem) VarDefInit(Class, Args.size());
std::uninitialized_copy(Args.begin(), Args.end(),
                        I->getTrailingObjects<Init *>());
ThePool.InsertNode(I, IP);
return I;
1561}

1563void VarDefInit::Profile(FoldingSetNodeID &ID) const {
ProfileVarDefInit(ID, Class, args());
1565}

1567DefInit *VarDefInit::instantiate() {
if (!Def) {
  RecordKeeper &Records = Class->getRecords();
  auto NewRecOwner = make_unique<Record>(Records.getNewAnonymousName(),
                                         Class->getLoc(), Records,
                                         /*IsAnonymous=*/true);
  Record *NewRec = NewRecOwner.get();

  // Copy values from class to instance
  for (const RecordVal &Val : Class->getValues())
    NewRec->addValue(Val);

  // Substitute and resolve template arguments
  ArrayRef<Init *> TArgs = Class->getTemplateArgs();
  MapResolver R(NewRec);

  for (unsigned i = 0, e = TArgs.size(); i != e; ++i) {
    if (i < args_size())
      R.set(TArgs[i], getArg(i));
    else
      R.set(TArgs[i], NewRec->getValue(TArgs[i])->getValue());

    NewRec->removeValue(TArgs[i]);
  }

  NewRec->resolveReferences(R);

  // Add superclasses.
  ArrayRef<std::pair<Record *, SMRange>> SCs = Class->getSuperClasses();
  for (const auto &SCPair : SCs)
    NewRec->addSuperClass(SCPair.first, SCPair.second);

  NewRec->addSuperClass(Class,
                        SMRange(Class->getLoc().back(),
                                Class->getLoc().back()));

  // Resolve internal references and store in record keeper
  NewRec->resolveReferences();
  Records.addDef(std::move(NewRecOwner));

  Def = DefInit::get(NewRec);
}

return Def;
1611}

1613Init *VarDefInit::resolveReferences(Resolver &R) const {
TrackUnresolvedResolver UR(&R);
bool Changed = false;
SmallVector<Init *, 8> NewArgs;
NewArgs.reserve(args_size());

for (Init *Arg : args()) {
  Init *NewArg = Arg->resolveReferences(UR);
  NewArgs.push_back(NewArg);
  Changed |= NewArg != Arg;
}

if (Changed) {
  auto New = VarDefInit::get(Class, NewArgs);
  if (!UR.foundUnresolved())
    return New->instantiate();
  return New;
}
return const_cast<VarDefInit *>(this);
1632}

1634Init *VarDefInit::Fold() const {
if (Def)
  return Def;

TrackUnresolvedResolver R;
for (Init *Arg : args())
  Arg->resolveReferences(R);

if (!R.foundUnresolved())
  return const_cast<VarDefInit *>(this)->instantiate();
return const_cast<VarDefInit *>(this);
1645}

1647std::string VarDefInit::getAsString() const {
std::string Result = Class->getNameInitAsString() + "<";
const char *sep = "";
for (Init *Arg : args()) {
  Result += sep;
  sep = ", ";
  Result += Arg->getAsString();
}
return Result + ">";
1656}

1658FieldInit *FieldInit::get(Init *R, StringInit *FN) {
using Key = std::pair<Init *, StringInit *>;
static DenseMap<Key, FieldInit*> ThePool;

Key TheKey(std::make_pair(R, FN));

FieldInit *&I = ThePool[TheKey];
if (!I) I = new(Allocator) FieldInit(R, FN);
return I;
1667}

1669Init *FieldInit::getBit(unsigned Bit) const {
if (getType() == BitRecTy::get())
  return const_cast<FieldInit*>(this);
return VarBitInit::get(const_cast<FieldInit*>(this), Bit);
1673}

1675Init *FieldInit::resolveReferences(Resolver &R) const {
Init *NewRec = Rec->resolveReferences(R);
if (NewRec != Rec)
  return FieldInit::get(NewRec, FieldName)->Fold(R.getCurrentRecord());
return const_cast<FieldInit *>(this);
1680}

1682Init *FieldInit::Fold(Record *CurRec) const {
if (DefInit *DI = dyn_cast<DefInit>(Rec)) {
  Record *Def = DI->getDef();
  if (Def == CurRec)
    PrintFatalError(CurRec->getLoc(),
                    Twine("Attempting to access field '") +
                    FieldName->getAsUnquotedString() + "' of '" +
                    Rec->getAsString() + "' is a forbidden self-reference");
  Init *FieldVal = Def->getValue(FieldName)->getValue();
  if (FieldVal->isComplete())
    return FieldVal;
}
return const_cast<FieldInit *>(this);
1695}

1697static void ProfileDagInit(FoldingSetNodeID &ID, Init *V, StringInit *VN,
                         ArrayRef<Init *> ArgRange,
                         ArrayRef<StringInit *> NameRange) {
ID.AddPointer(V);
ID.AddPointer(VN);

ArrayRef<Init *>::iterator Arg = ArgRange.begin();
ArrayRef<StringInit *>::iterator Name = NameRange.begin();
while (Arg != ArgRange.end()) {
  assert(Name != NameRange.end() && "Arg name underflow!")((Name != NameRange.end() && "Arg name underflow!") ?
 static_cast<void> (0) : __assert_fail ("Name != NameRange.end() && \"Arg name underflow!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 1706, __PRETTY_FUNCTION__));
  ID.AddPointer(*Arg++);
  ID.AddPointer(*Name++);
}
assert(Name == NameRange.end() && "Arg name overflow!")((Name == NameRange.end() && "Arg name overflow!") ? static_cast
<void> (0) : __assert_fail ("Name == NameRange.end() && \"Arg name overflow!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 1710, __PRETTY_FUNCTION__));
1711}

1713DagInit *
1714DagInit::get(Init *V, StringInit *VN, ArrayRef<Init *> ArgRange,
           ArrayRef<StringInit *> NameRange) {
static FoldingSet<DagInit> ThePool;

FoldingSetNodeID ID;
ProfileDagInit(ID, V, VN, ArgRange, NameRange);

void *IP = nullptr;
if (DagInit *I = ThePool.FindNodeOrInsertPos(ID, IP))
  return I;

void *Mem = Allocator.Allocate(totalSizeToAlloc<Init *, StringInit *>(ArgRange.size(), NameRange.size()), alignof(BitsInit));
DagInit *I = new(Mem) DagInit(V, VN, ArgRange.size(), NameRange.size());
std::uninitialized_copy(ArgRange.begin(), ArgRange.end(),
                        I->getTrailingObjects<Init *>());
std::uninitialized_copy(NameRange.begin(), NameRange.end(),
                        I->getTrailingObjects<StringInit *>());
ThePool.InsertNode(I, IP);
return I;
1733}

1735DagInit *
1736DagInit::get(Init *V, StringInit *VN,
           ArrayRef<std::pair<Init*, StringInit*>> args) {
SmallVector<Init *, 8> Args;
SmallVector<StringInit *, 8> Names;

for (const auto &Arg : args) {
  Args.push_back(Arg.first);
  Names.push_back(Arg.second);
}

return DagInit::get(V, VN, Args, Names);
1747}

1749void DagInit::Profile(FoldingSetNodeID &ID) const {
ProfileDagInit(ID, Val, ValName, makeArrayRef(getTrailingObjects<Init *>(), NumArgs), makeArrayRef(getTrailingObjects<StringInit *>(), NumArgNames));
1751}

1753Init *DagInit::resolveReferences(Resolver &R) const {
SmallVector<Init*, 8> NewArgs;
NewArgs.reserve(arg_size());
bool ArgsChanged = false;
for (const Init *Arg : getArgs()) {
  Init *NewArg = Arg->resolveReferences(R);
  NewArgs.push_back(NewArg);
  ArgsChanged |= NewArg != Arg;
}

Init *Op = Val->resolveReferences(R);
if (Op != Val || ArgsChanged)
  return DagInit::get(Op, ValName, NewArgs, getArgNames());

return const_cast<DagInit *>(this);
1768}

1770bool DagInit::isConcrete() const {
if (!Val->isConcrete())
  return false;
for (const Init *Elt : getArgs()) {
  if (!Elt->isConcrete())
    return false;
}
return true;
1778}

1780std::string DagInit::getAsString() const {
std::string Result = "(" + Val->getAsString();
if (ValName)
  Result += ":" + ValName->getAsUnquotedString();
if (!arg_empty()) {
  Result += " " + getArg(0)->getAsString();
  if (getArgName(0)) Result += ":$" + getArgName(0)->getAsUnquotedString();
  for (unsigned i = 1, e = getNumArgs(); i != e; ++i) {
    Result += ", " + getArg(i)->getAsString();
    if (getArgName(i)) Result += ":$" + getArgName(i)->getAsUnquotedString();
  }
}
return Result + ")";
1793}

1795//===----------------------------------------------------------------------===//
1796//    Other implementations
1797//===----------------------------------------------------------------------===//

1799RecordVal::RecordVal(Init *N, RecTy *T, bool P)
: Name(N), TyAndPrefix(T, P) {
setValue(UnsetInit::get());
assert(Value && "Cannot create unset value for current type!")((Value && "Cannot create unset value for current type!"
) ? static_cast<void> (0) : __assert_fail ("Value && \"Cannot create unset value for current type!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 1802, __PRETTY_FUNCTION__));
1803}

1805StringRef RecordVal::getName() const {
return cast<StringInit>(getNameInit())->getValue();
1807}

1809bool RecordVal::setValue(Init *V) {
if (V) {
  Value = V->getCastTo(getType());
  if (Value) {
    assert(!isa<TypedInit>(Value) ||((!isa<TypedInit>(Value) || cast<TypedInit>(Value
)->getType()->typeIsA(getType())) ? static_cast<void
> (0) : __assert_fail ("!isa<TypedInit>(Value) || cast<TypedInit>(Value)->getType()->typeIsA(getType())"
, "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 1814, __PRETTY_FUNCTION__))
           cast<TypedInit>(Value)->getType()->typeIsA(getType()))((!isa<TypedInit>(Value) || cast<TypedInit>(Value
)->getType()->typeIsA(getType())) ? static_cast<void
> (0) : __assert_fail ("!isa<TypedInit>(Value) || cast<TypedInit>(Value)->getType()->typeIsA(getType())"
, "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 1814, __PRETTY_FUNCTION__));
    if (BitsRecTy *BTy = dyn_cast<BitsRecTy>(getType())) {
      if (!isa<BitsInit>(Value)) {
        SmallVector<Init *, 64> Bits;
        Bits.reserve(BTy->getNumBits());
        for (unsigned i = 0, e = BTy->getNumBits(); i < e; ++i)
          Bits.push_back(Value->getBit(i));
        Value = BitsInit::get(Bits);
      }
    }
  }
  return Value == nullptr;
}
Value = nullptr;
return false;
1829}

1831#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
1832LLVM_DUMP_METHOD__attribute__((noinline)) __attribute__((__used__)) void RecordVal::dump() const { errs() << *this; }
1833#endif

1835void RecordVal::print(raw_ostream &OS, bool PrintSem) const {
if (getPrefix()) OS << "field ";
OS << *getType() << " " << getNameInitAsString();

if (getValue())
  OS << " = " << *getValue();

if (PrintSem) OS << ";\n";
1843}

1845unsigned Record::LastID = 0;

1847void Record::checkName() {
// Ensure the record name has string type.
const TypedInit *TypedName = cast<const TypedInit>(Name);
if (!isa<StringRecTy>(TypedName->getType()))
  PrintFatalError(getLoc(), Twine("Record name '") + Name->getAsString() +
                                "' is not a string!");
1853}

1855RecordRecTy *Record::getType() {
SmallVector<Record *, 4> DirectSCs;
getDirectSuperClasses(DirectSCs);
return RecordRecTy::get(DirectSCs);
1859}

1861DefInit *Record::getDefInit() {
if (!TheInit)
  TheInit = new(Allocator) DefInit(this);
return TheInit;
1865}

1867void Record::setName(Init *NewName) {
Name = NewName;
checkName();
// DO NOT resolve record values to the name at this point because
// there might be default values for arguments of this def.  Those
// arguments might not have been resolved yet so we don't want to
// prematurely assume values for those arguments were not passed to
// this def.
//
// Nonetheless, it may be that some of this Record's values
// reference the record name.  Indeed, the reason for having the
// record name be an Init is to provide this flexibility.  The extra
// resolve steps after completely instantiating defs takes care of
// this.  See TGParser::ParseDef and TGParser::ParseDefm.
1881}

1883void Record::getDirectSuperClasses(SmallVectorImpl<Record *> &Classes) const {
ArrayRef<std::pair<Record *, SMRange>> SCs = getSuperClasses();
while (!SCs.empty()) {
  // Superclasses are in reverse preorder, so 'back' is a direct superclass,
  // and its transitive superclasses are directly preceding it.
  Record *SC = SCs.back().first;
  SCs = SCs.drop_back(1 + SC->getSuperClasses().size());
  Classes.push_back(SC);
}
1892}

1894void Record::resolveReferences(Resolver &R, const RecordVal *SkipVal) {
for (RecordVal &Value : Values) {
  if (SkipVal == &Value) // Skip resolve the same field as the given one
    continue;
  if (Init *V = Value.getValue()) {
    Init *VR = V->resolveReferences(R);
    if (Value.setValue(VR)) {
      std::string Type;
      if (TypedInit *VRT = dyn_cast<TypedInit>(VR))
        Type =
            (Twine("of type '") + VRT->getType()->getAsString() + "' ").str();
      PrintFatalError(getLoc(), Twine("Invalid value ") + Type +
                                    "is found when setting '" +
                                    Value.getNameInitAsString() +
                                    "' of type '" +
                                    Value.getType()->getAsString() +
                                    "' after resolving references: " +
                                    VR->getAsUnquotedString() + "\n");
    }
  }
}
Init *OldName = getNameInit();
Init *NewName = Name->resolveReferences(R);
if (NewName != OldName) {
  // Re-register with RecordKeeper.
  setName(NewName);
}
1921}

1923void Record::resolveReferences() {
RecordResolver R(*this);
R.setFinal(true);
resolveReferences(R);
1927}

1929void Record::resolveReferencesTo(const RecordVal *RV) {
RecordValResolver R(*this, RV);
resolveReferences(R, RV);
1932}

1934#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
1935LLVM_DUMP_METHOD__attribute__((noinline)) __attribute__((__used__)) void Record::dump() const { errs() << *this; }
1936#endif

1938raw_ostream &llvm::operator<<(raw_ostream &OS, const Record &R) {
OS << R.getNameInitAsString();

ArrayRef<Init *> TArgs = R.getTemplateArgs();
if (!TArgs.empty()) {
  OS << "<";
  bool NeedComma = false;
  for (const Init *TA : TArgs) {
    if (NeedComma) OS << ", ";
    NeedComma = true;
    const RecordVal *RV = R.getValue(TA);
    assert(RV && "Template argument record not found??")((RV && "Template argument record not found??") ? static_cast
<void> (0) : __assert_fail ("RV && \"Template argument record not found??\""
, "/build/llvm-toolchain-snapshot-8~svn350071/lib/TableGen/Record.cpp"
, 1949, __PRETTY_FUNCTION__));
    RV->print(OS, false);
  }
  OS << ">";
}

OS << " {";
ArrayRef<std::pair<Record *, SMRange>> SC = R.getSuperClasses();
if (!SC.empty()) {
  OS << "\t//";
  for (const auto &SuperPair : SC)
    OS << " " << SuperPair.first->getNameInitAsString();
}
OS << "\n";

for (const RecordVal &Val : R.getValues())
  if (Val.getPrefix() && !R.isTemplateArg(Val.getNameInit()))
    OS << Val;
for (const RecordVal &Val : R.getValues())
  if (!Val.getPrefix() && !R.isTemplateArg(Val.getNameInit()))
    OS << Val;

return OS << "}\n";
1972}

1974Init *Record::getValueInit(StringRef FieldName) const {
const RecordVal *R = getValue(FieldName);
if (!R || !R->getValue())
  PrintFatalError(getLoc(), "Record `" + getName() +
    "' does not have a field named `" + FieldName + "'!\n");
return R->getValue();
1980}

1982StringRef Record::getValueAsString(StringRef FieldName) const {
const RecordVal *R = getValue(FieldName);
if (!R || !R->getValue())
  PrintFatalError(getLoc(), "Record `" + getName() +
    "' does not have a field named `" + FieldName + "'!\n");

if (StringInit *SI = dyn_cast<StringInit>(R->getValue()))
  return SI->getValue();
if (CodeInit *CI = dyn_cast<CodeInit>(R->getValue()))
  return CI->getValue();

PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
  FieldName + "' does not have a string initializer!");
1995}

1997BitsInit *Record::getValueAsBitsInit(StringRef FieldName) const {
const RecordVal *R = getValue(FieldName);
if (!R || !R->getValue())
  PrintFatalError(getLoc(), "Record `" + getName() +
    "' does not have a field named `" + FieldName + "'!\n");

if (BitsInit *BI = dyn_cast<BitsInit>(R->getValue()))
  return BI;
PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
  FieldName + "' does not have a BitsInit initializer!");
2007}

2009ListInit *Record::getValueAsListInit(StringRef FieldName) const {
const RecordVal *R = getValue(FieldName);
if (!R || !R->getValue())
  PrintFatalError(getLoc(), "Record `" + getName() +
    "' does not have a field named `" + FieldName + "'!\n");

if (ListInit *LI = dyn_cast<ListInit>(R->getValue()))
  return LI;
PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
  FieldName + "' does not have a list initializer!");
2019}

2021std::vector<Record*>
2022Record::getValueAsListOfDefs(StringRef FieldName) const {
ListInit *List = getValueAsListInit(FieldName);
std::vector<Record*> Defs;
for (Init *I : List->getValues()) {
  if (DefInit *DI = dyn_cast<DefInit>(I))
    Defs.push_back(DI->getDef());
  else
    PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
      FieldName + "' list is not entirely DefInit!");
}
return Defs;
2033}

2035int64_t Record::getValueAsInt(StringRef FieldName) const {
const RecordVal *R = getValue(FieldName);
if (!R || !R->getValue())
  PrintFatalError(getLoc(), "Record `" + getName() +
    "' does not have a field named `" + FieldName + "'!\n");

if (IntInit *II = dyn_cast<IntInit>(R->getValue()))
  return II->getValue();
PrintFatalError(getLoc(), Twine("Record `") + getName() + "', field `" +
                              FieldName +
                              "' does not have an int initializer: " +
                              R->getValue()->getAsString());
2047}

2049std::vector<int64_t>
2050Record::getValueAsListOfInts(StringRef FieldName) const {
ListInit *List = getValueAsListInit(FieldName);
std::vector<int64_t> Ints;
for (Init *I : List->getValues()) {
  if (IntInit *II = dyn_cast<IntInit>(I))
    Ints.push_back(II->getValue());
  else
    PrintFatalError(getLoc(),
                    Twine("Record `") + getName() + "', field `" + FieldName +
                        "' does not have a list of ints initializer: " +
                        I->getAsString());
}
return Ints;
2063}

2065std::vector<StringRef>
2066Record::getValueAsListOfStrings(StringRef FieldName) const {
ListInit *List = getValueAsListInit(FieldName);
std::vector<StringRef> Strings;
for (Init *I : List->getValues()) {
  if (StringInit *SI = dyn_cast<StringInit>(I))
    Strings.push_back(SI->getValue());
  else
    PrintFatalError(getLoc(),
                    Twine("Record `") + getName() + "', field `" + FieldName +
                        "' does not have a list of strings initializer: " +
                        I->getAsString());
}
return Strings;
2079}

2081Record *Record::getValueAsDef(StringRef FieldName) const {
const RecordVal *R = getValue(FieldName);
if (!R || !R->getValue())
  PrintFatalError(getLoc(), "Record `" + getName() +
    "' does not have a field named `" + FieldName + "'!\n");

if (DefInit *DI = dyn_cast<DefInit>(R->getValue()))
  return DI->getDef();
PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
  FieldName + "' does not have a def initializer!");
2091}

2093bool Record::getValueAsBit(StringRef FieldName) const {
const RecordVal *R = getValue(FieldName);
if (!R || !R->getValue())
  PrintFatalError(getLoc(), "Record `" + getName() +
    "' does not have a field named `" + FieldName + "'!\n");

if (BitInit *BI = dyn_cast<BitInit>(R->getValue()))
  return BI->getValue();
PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
  FieldName + "' does not have a bit initializer!");
2103}

2105bool Record::getValueAsBitOrUnset(StringRef FieldName, bool &Unset) const {
const RecordVal *R = getValue(FieldName);
if (!R || !R->getValue())
  PrintFatalError(getLoc(), "Record `" + getName() +
    "' does not have a field named `" + FieldName.str() + "'!\n");

if (isa<UnsetInit>(R->getValue())) {
  Unset = true;
  return false;
}
Unset = false;
if (BitInit *BI = dyn_cast<BitInit>(R->getValue()))
  return BI->getValue();
PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
  FieldName + "' does not have a bit initializer!");
2120}

2122DagInit *Record::getValueAsDag(StringRef FieldName) const {
const RecordVal *R = getValue(FieldName);
if (!R || !R->getValue())
  PrintFatalError(getLoc(), "Record `" + getName() +
    "' does not have a field named `" + FieldName + "'!\n");

if (DagInit *DI = dyn_cast<DagInit>(R->getValue()))
  return DI;
PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
  FieldName + "' does not have a dag initializer!");
2132}

2134#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
2135LLVM_DUMP_METHOD__attribute__((noinline)) __attribute__((__used__)) void RecordKeeper::dump() const { errs() << *this; }
2136#endif

2138raw_ostream &llvm::operator<<(raw_ostream &OS, const RecordKeeper &RK) {
OS << "------------- Classes -----------------\n";
for (const auto &C : RK.getClasses())
  OS << "class " << *C.second;

OS << "------------- Defs -----------------\n";
for (const auto &D : RK.getDefs())
  OS << "def " << *D.second;
return OS;
2147}

2149/// GetNewAnonymousName - Generate a unique anonymous name that can be used as
2150/// an identifier.
2151Init *RecordKeeper::getNewAnonymousName() {
return StringInit::get("anonymous_" + utostr(AnonCounter++));
2153}

2155std::vector<Record *>
2156RecordKeeper::getAllDerivedDefinitions(StringRef ClassName) const {
Record *Class = getClass(ClassName);
if (!Class)
  PrintFatalError("ERROR: Couldn't find the `" + ClassName + "' class!\n");

std::vector<Record*> Defs;
for (const auto &D : getDefs())
  if (D.second->isSubClassOf(Class))
    Defs.push_back(D.second.get());

return Defs;
2167}

2169Init *MapResolver::resolve(Init *VarName) {
auto It = Map.find(VarName);
if (It == Map.end())
  return nullptr;

Init *I = It->second.V;

if (!It->second.Resolved && Map.size() > 1) {
  // Resolve mutual references among the mapped variables, but prevent
  // infinite recursion.
  Map.erase(It);
  I = I->resolveReferences(*this);
  Map[VarName] = {I, true};
}

return I;
2185}

2187Init *RecordResolver::resolve(Init *VarName) {
Init *Val = Cache.lookup(VarName);
if (Val)
  return Val;

for (Init *S : Stack) {
  if (S == VarName)
    return nullptr; // prevent infinite recursion
}

if (RecordVal *RV = getCurrentRecord()->getValue(VarName)) {
  if (!isa<UnsetInit>(RV->getValue())) {
    Val = RV->getValue();
    Stack.push_back(VarName);
    Val = Val->resolveReferences(*this);
    Stack.pop_back();
  }
}

Cache[VarName] = Val;
return Val;
2208}

2210Init *TrackUnresolvedResolver::resolve(Init *VarName) {
Init *I = nullptr;

if (R) {
  I = R->resolve(VarName);
  if (I && !FoundUnresolved) {
    // Do not recurse into the resolved initializer, as that would change
    // the behavior of the resolver we're delegating, but do check to see
    // if there are unresolved variables remaining.
    TrackUnresolvedResolver Sub;
    I->resolveReferences(Sub);
    FoundUnresolved |= Sub.FoundUnresolved;
  }
}

if (!I)
  FoundUnresolved = true;
return I;
2228}

2230Init *HasReferenceResolver::resolve(Init *VarName)
2231{
if (VarName == VarNameToTrack)
  Found = true;
return nullptr;
2235}