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Record.cpp
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Record.cpp
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//===- Record.cpp - Record implementation ---------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Implement the tablegen record classes.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/SMLoc.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/TableGen/Error.h"
#include "llvm/TableGen/Record.h"
#include <cassert>
#include <cstdint>
#include <memory>
#include <string>
#include <utility>
#include <vector>
using namespace llvm;
static BumpPtrAllocator Allocator;
//===----------------------------------------------------------------------===//
// Type implementations
//===----------------------------------------------------------------------===//
BitRecTy BitRecTy::Shared;
CodeRecTy CodeRecTy::Shared;
IntRecTy IntRecTy::Shared;
StringRecTy StringRecTy::Shared;
DagRecTy DagRecTy::Shared;
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
LLVM_DUMP_METHOD void RecTy::dump() const { print(errs()); }
#endif
ListRecTy *RecTy::getListTy() {
if (!ListTy)
ListTy = new(Allocator) ListRecTy(this);
return ListTy;
}
bool RecTy::typeIsConvertibleTo(const RecTy *RHS) const {
assert(RHS && "NULL pointer");
return Kind == RHS->getRecTyKind();
}
bool 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;
}
BitsRecTy *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;
}
std::string BitsRecTy::getAsString() const {
return "bits<" + utostr(Size) + ">";
}
bool 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);
}
bool IntRecTy::typeIsConvertibleTo(const RecTy *RHS) const {
RecTyKind kind = RHS->getRecTyKind();
return kind==BitRecTyKind || kind==BitsRecTyKind || kind==IntRecTyKind;
}
std::string StringRecTy::getAsString() const {
return "string";
}
std::string ListRecTy::getAsString() const {
return "list<" + Ty->getAsString() + ">";
}
bool ListRecTy::typeIsConvertibleTo(const RecTy *RHS) const {
if (const auto *ListTy = dyn_cast<ListRecTy>(RHS))
return Ty->typeIsConvertibleTo(ListTy->getElementType());
return false;
}
std::string DagRecTy::getAsString() const {
return "dag";
}
RecordRecTy *RecordRecTy::get(Record *R) {
return dyn_cast<RecordRecTy>(R->getDefInit()->getType());
}
std::string RecordRecTy::getAsString() const {
return Rec->getName();
}
bool RecordRecTy::typeIsConvertibleTo(const RecTy *RHS) const {
const RecordRecTy *RTy = dyn_cast<RecordRecTy>(RHS);
if (!RTy)
return false;
if (RTy->getRecord() == Rec || Rec->isSubClassOf(RTy->getRecord()))
return true;
for (const auto &SCPair : RTy->getRecord()->getSuperClasses())
if (Rec->isSubClassOf(SCPair.first))
return true;
return false;
}
RecTy *llvm::resolveTypes(RecTy *T1, RecTy *T2) {
if (T1->typeIsConvertibleTo(T2))
return T2;
if (T2->typeIsConvertibleTo(T1))
return T1;
// If one is a Record type, check superclasses
if (RecordRecTy *RecTy1 = dyn_cast<RecordRecTy>(T1)) {
// See if T2 inherits from a type T1 also inherits from
for (const auto &SuperPair1 : RecTy1->getRecord()->getSuperClasses()) {
RecordRecTy *SuperRecTy1 = RecordRecTy::get(SuperPair1.first);
RecTy *NewType1 = resolveTypes(SuperRecTy1, T2);
if (NewType1)
return NewType1;
}
}
if (RecordRecTy *RecTy2 = dyn_cast<RecordRecTy>(T2)) {
// See if T1 inherits from a type T2 also inherits from
for (const auto &SuperPair2 : RecTy2->getRecord()->getSuperClasses()) {
RecordRecTy *SuperRecTy2 = RecordRecTy::get(SuperPair2.first);
RecTy *NewType2 = resolveTypes(T1, SuperRecTy2);
if (NewType2)
return NewType2;
}
}
return nullptr;
}
//===----------------------------------------------------------------------===//
// Initializer implementations
//===----------------------------------------------------------------------===//
void Init::anchor() {}
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
LLVM_DUMP_METHOD void Init::dump() const { return print(errs()); }
#endif
UnsetInit *UnsetInit::get() {
static UnsetInit TheInit;
return &TheInit;
}
Init *UnsetInit::convertInitializerTo(RecTy *Ty) const {
if (auto *BRT = dyn_cast<BitsRecTy>(Ty)) {
SmallVector<Init *, 16> NewBits(BRT->getNumBits());
for (unsigned i = 0; i != BRT->getNumBits(); ++i)
NewBits[i] = UnsetInit::get();
return BitsInit::get(NewBits);
}
// All other types can just be returned.
return const_cast<UnsetInit *>(this);
}
BitInit *BitInit::get(bool V) {
static BitInit True(true);
static BitInit False(false);
return V ? &True : &False;
}
Init *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;
}
static void
ProfileBitsInit(FoldingSetNodeID &ID, ArrayRef<Init *> Range) {
ID.AddInteger(Range.size());
for (Init *I : Range)
ID.AddPointer(I);
}
BitsInit *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;
}
void BitsInit::Profile(FoldingSetNodeID &ID) const {
ProfileBitsInit(ID, makeArrayRef(getTrailingObjects<Init *>(), NumBits));
}
Init *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;
}
Init *
BitsInit::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);
}
std::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 + " }";
}
// Fix bit initializer to preserve the behavior that bit reference from a unset
// bits initializer will resolve into VarBitInit to keep the field name and bit
// number used in targets with fixed insn length.
static Init *fixBitInit(const RecordVal *RV, Init *Before, Init *After) {
if (RV || !isa<UnsetInit>(After))
return After;
return Before;
}
// resolveReferences - If there are any field references that refer to fields
// that have been filled in, we can propagate the values now.
Init *BitsInit::resolveReferences(Record &R, const RecordVal *RV) const {
bool Changed = false;
SmallVector<Init *, 16> NewBits(getNumBits());
Init *CachedInit = nullptr;
Init *CachedBitVar = nullptr;
bool CachedBitVarChanged = false;
for (unsigned i = 0, e = getNumBits(); i != e; ++i) {
Init *CurBit = getBit(i);
Init *CurBitVar = CurBit->getBitVar();
NewBits[i] = CurBit;
if (CurBitVar == CachedBitVar) {
if (CachedBitVarChanged) {
Init *Bit = CachedInit->getBit(CurBit->getBitNum());
NewBits[i] = fixBitInit(RV, CurBit, Bit);
}
continue;
}
CachedBitVar = CurBitVar;
CachedBitVarChanged = false;
Init *B;
do {
B = CurBitVar;
CurBitVar = CurBitVar->resolveReferences(R, RV);
CachedBitVarChanged |= B != CurBitVar;
Changed |= B != CurBitVar;
} while (B != CurBitVar);
CachedInit = CurBitVar;
if (CachedBitVarChanged) {
Init *Bit = CurBitVar->getBit(CurBit->getBitNum());
NewBits[i] = fixBitInit(RV, CurBit, Bit);
}
}
if (Changed)
return BitsInit::get(NewBits);
return const_cast<BitsInit *>(this);
}
IntInit *IntInit::get(int64_t V) {
static DenseMap<int64_t, IntInit*> ThePool;
IntInit *&I = ThePool[V];
if (!I) I = new(Allocator) IntInit(V);
return I;
}
std::string IntInit::getAsString() const {
return itostr(Value);
}
static 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);
}
Init *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 & (1LL << i));
return BitsInit::get(NewBits);
}
return nullptr;
}
Init *
IntInit::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) << Bits[i]));
}
return BitsInit::get(NewBits);
}
CodeInit *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;
}
StringInit *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;
}
Init *StringInit::convertInitializerTo(RecTy *Ty) const {
if (isa<StringRecTy>(Ty))
return const_cast<StringInit *>(this);
return nullptr;
}
Init *CodeInit::convertInitializerTo(RecTy *Ty) const {
if (isa<CodeRecTy>(Ty))
return const_cast<CodeInit *>(this);
return nullptr;
}
static void ProfileListInit(FoldingSetNodeID &ID,
ArrayRef<Init *> Range,
RecTy *EltTy) {
ID.AddInteger(Range.size());
ID.AddPointer(EltTy);
for (Init *I : Range)
ID.AddPointer(I);
}
ListInit *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;
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;
}
void ListInit::Profile(FoldingSetNodeID &ID) const {
RecTy *EltTy = cast<ListRecTy>(getType())->getElementType();
ProfileListInit(ID, getValues(), EltTy);
}
Init *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, Ty);
}
return nullptr;
}
Init *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, getType());
}
Record *ListInit::getElementAsRecord(unsigned i) const {
assert(i < NumValues && "List element index out of range!");
DefInit *DI = dyn_cast<DefInit>(getElement(i));
if (!DI)
PrintFatalError("Expected record in list!");
return DI->getDef();
}
Init *ListInit::resolveReferences(Record &R, const RecordVal *RV) const {
SmallVector<Init*, 8> Resolved;
Resolved.reserve(size());
bool Changed = false;
for (Init *CurElt : getValues()) {
Init *E;
do {
E = CurElt;
CurElt = CurElt->resolveReferences(R, RV);
Changed |= E != CurElt;
} while (E != CurElt);
Resolved.push_back(E);
}
if (Changed)
return ListInit::get(Resolved, getType());
return const_cast<ListInit *>(this);
}
Init *ListInit::resolveListElementReference(Record &R, const RecordVal *IRV,
unsigned Elt) const {
if (Elt >= size())
return nullptr; // Out of range reference.
Init *E = getElement(Elt);
// If the element is set to some value, or if we are resolving a reference
// to a specific variable and that variable is explicitly unset, then
// replace the VarListElementInit with it.
if (IRV || !isa<UnsetInit>(E))
return E;
return nullptr;
}
std::string ListInit::getAsString() const {
std::string Result = "[";
const char *sep = "";
for (Init *Element : *this) {
Result += sep;
sep = ", ";
Result += Element->getAsString();
}
return Result + "]";
}
Init *OpInit::resolveListElementReference(Record &R, const RecordVal *IRV,
unsigned Elt) const {
Init *Resolved = resolveReferences(R, IRV);
OpInit *OResolved = dyn_cast<OpInit>(Resolved);
if (OResolved) {
Resolved = OResolved->Fold(&R, nullptr);
}
if (Resolved != this) {
TypedInit *Typed = cast<TypedInit>(Resolved);
if (Init *New = Typed->resolveListElementReference(R, IRV, Elt))
return New;
return VarListElementInit::get(Typed, Elt);
}
return nullptr;
}
Init *OpInit::getBit(unsigned Bit) const {
if (getType() == BitRecTy::get())
return const_cast<OpInit*>(this);
return VarBitInit::get(const_cast<OpInit*>(this), Bit);
}
static void
ProfileUnOpInit(FoldingSetNodeID &ID, unsigned Opcode, Init *Op, RecTy *Type) {
ID.AddInteger(Opcode);
ID.AddPointer(Op);
ID.AddPointer(Type);
}
UnOpInit *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;
}
void UnOpInit::Profile(FoldingSetNodeID &ID) const {
ProfileUnOpInit(ID, getOpcode(), getOperand(), getType());
}
Init *UnOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) 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 (StringInit *Name = dyn_cast<StringInit>(LHS)) {
// From TGParser::ParseIDValue
if (CurRec) {
if (const RecordVal *RV = CurRec->getValue(Name)) {
if (RV->getType() != getType())
PrintFatalError("type mismatch in cast");
return VarInit::get(Name, RV->getType());
}
Init *TemplateArgName = QualifyName(*CurRec, CurMultiClass, Name,
":");
if (CurRec->isTemplateArg(TemplateArgName)) {
const RecordVal *RV = CurRec->getValue(TemplateArgName);
assert(RV && "Template arg doesn't exist??");
if (RV->getType() != getType())
PrintFatalError("type mismatch in cast");
return VarInit::get(TemplateArgName, RV->getType());
}
}
if (CurMultiClass) {
Init *MCName = QualifyName(CurMultiClass->Rec, CurMultiClass, Name,
"::");
if (CurMultiClass->Rec.isTemplateArg(MCName)) {
const RecordVal *RV = CurMultiClass->Rec.getValue(MCName);
assert(RV && "Template arg doesn't exist??");
if (RV->getType() != getType())
PrintFatalError("type mismatch in cast");
return VarInit::get(MCName, RV->getType());
}
}
assert(CurRec && "NULL pointer");
if (Record *D = (CurRec->getRecords()).getDef(Name->getValue()))
return DefInit::get(D);
PrintFatalError(CurRec->getLoc(),
"Undefined reference:'" + Name->getValue() + "'\n");
}
if (isa<IntRecTy>(getType())) {
if (BitsInit *BI = dyn_cast<BitsInit>(LHS)) {
if (Init *NewInit = BI->convertInitializerTo(IntRecTy::get()))
return NewInit;
break;
}
}
}
break;
case HEAD:
if (ListInit *LHSl = dyn_cast<ListInit>(LHS)) {
assert(!LHSl->empty() && "Empty list in head");
return LHSl->getElement(0);
}
break;
case TAIL:
if (ListInit *LHSl = dyn_cast<ListInit>(LHS)) {
assert(!LHSl->empty() && "Empty list in tail");
// Note the +1. We can't just pass the result of getValues()
// directly.
return ListInit::get(LHSl->getValues().slice(1), LHSl->getType());
}
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);
}
Init *UnOpInit::resolveReferences(Record &R, const RecordVal *RV) const {
Init *lhs = LHS->resolveReferences(R, RV);
if (LHS != lhs)
return (UnOpInit::get(getOpcode(), lhs, getType()))->Fold(&R, nullptr);
return Fold(&R, nullptr);
}
std::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 EMPTY: Result = "!empty"; break;
}
return Result + "(" + LHS->getAsString() + ")";
}
static void
ProfileBinOpInit(FoldingSetNodeID &ID, unsigned Opcode, Init *LHS, Init *RHS,
RecTy *Type) {
ID.AddInteger(Opcode);
ID.AddPointer(LHS);
ID.AddPointer(RHS);
ID.AddPointer(Type);
}
BinOpInit *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;
}
void BinOpInit::Profile(FoldingSetNodeID &ID) const {
ProfileBinOpInit(ID, getOpcode(), getLHS(), getRHS(), getType());
}
static StringInit *ConcatStringInits(const StringInit *I0,
const StringInit *I1) {
SmallString<80> Concat(I0->getValue());
Concat.append(I1->getValue());
return StringInit::get(Concat);
}
Init *BinOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) 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 || LOp->getDef() != ROp->getDef())
PrintFatalError("Concated Dag operators do not match!");
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, cast<ListRecTy>(LHSs->getType())->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: {
// 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)
return IntInit::get(L->getValue() == R->getValue());
StringInit *LHSs = dyn_cast<StringInit>(LHS);
StringInit *RHSs = dyn_cast<StringInit>(RHS);
// Make sure we've resolved
if (LHSs && RHSs)
return IntInit::get(LHSs->getValue() == RHSs->getValue());
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!");
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);
}
Init *BinOpInit::resolveReferences(Record &R, const RecordVal *RV) const {
Init *lhs = LHS->resolveReferences(R, RV);
Init *rhs = RHS->resolveReferences(R, RV);
if (LHS != lhs || RHS != rhs)
return (BinOpInit::get(getOpcode(), lhs, rhs, getType()))->Fold(&R,nullptr);
return Fold(&R, nullptr);
}
std::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 LISTCONCAT: Result = "!listconcat"; break;
case STRCONCAT: Result = "!strconcat"; break;
}
return Result + "(" + LHS->getAsString() + ", " + RHS->getAsString() + ")";
}
static void
ProfileTernOpInit(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);
}
TernOpInit *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;
}
void TernOpInit::Profile(FoldingSetNodeID &ID) const {
ProfileTernOpInit(ID, getOpcode(), getLHS(), getMHS(), getRHS(), getType());
}
static Init *ForeachHelper(Init *LHS, Init *MHS, Init *RHS, RecTy *Type,
Record *CurRec, MultiClass *CurMultiClass);
static Init *EvaluateOperation(OpInit *RHSo, Init *LHS, Init *Arg,
RecTy *Type, Record *CurRec,
MultiClass *CurMultiClass) {
// If this is a dag, recurse
if (auto *TArg = dyn_cast<TypedInit>(Arg))
if (isa<DagRecTy>(TArg->getType()))
return ForeachHelper(LHS, Arg, RHSo, Type, CurRec, CurMultiClass);
SmallVector<Init *, 8> NewOperands;
NewOperands.reserve(RHSo->getNumOperands());
for (unsigned i = 0, e = RHSo->getNumOperands(); i < e; ++i) {
if (auto *RHSoo = dyn_cast<OpInit>(RHSo->getOperand(i))) {
if (Init *Result = EvaluateOperation(RHSoo, LHS, Arg,
Type, CurRec, CurMultiClass))
NewOperands.push_back(Result);
else
NewOperands.push_back(Arg);
} else if (LHS->getAsString() == RHSo->getOperand(i)->getAsString()) {
NewOperands.push_back(Arg);
} else {
NewOperands.push_back(RHSo->getOperand(i));
}
}
// Now run the operator and use its result as the new leaf
const OpInit *NewOp = RHSo->clone(NewOperands);
Init *NewVal = NewOp->Fold(CurRec, CurMultiClass);
return (NewVal != NewOp) ? NewVal : nullptr;
}
static Init *ForeachHelper(Init *LHS, Init *MHS, Init *RHS, RecTy *Type,
Record *CurRec, MultiClass *CurMultiClass) {
OpInit *RHSo = dyn_cast<OpInit>(RHS);
if (!RHSo)
PrintFatalError(CurRec->getLoc(), "!foreach requires an operator\n");
TypedInit *LHSt = dyn_cast<TypedInit>(LHS);
if (!LHSt)
PrintFatalError(CurRec->getLoc(), "!foreach requires typed variable\n");
DagInit *MHSd = dyn_cast<DagInit>(MHS);
if (MHSd && isa<DagRecTy>(Type)) {
Init *Val = MHSd->getOperator();
if (Init *Result = EvaluateOperation(RHSo, LHS, Val,
Type, CurRec, CurMultiClass))
Val = Result;
SmallVector<std::pair<Init *, StringInit*>, 8> args;
for (unsigned int i = 0; i < MHSd->getNumArgs(); ++i) {
Init *Arg = MHSd->getArg(i);
StringInit *ArgName = MHSd->getArgName(i);
// Process args
if (Init *Result = EvaluateOperation(RHSo, LHS, Arg, Type,
CurRec, CurMultiClass))
Arg = Result;
// TODO: Process arg names
args.push_back(std::make_pair(Arg, ArgName));
}
return DagInit::get(Val, nullptr, args);
}
ListInit *MHSl = dyn_cast<ListInit>(MHS);
if (MHSl && isa<ListRecTy>(Type)) {
SmallVector<Init *, 8> NewOperands;
SmallVector<Init *, 8> NewList(MHSl->begin(), MHSl->end());
for (Init *&Item : NewList) {
NewOperands.clear();
for(unsigned i = 0; i < RHSo->getNumOperands(); ++i) {
// First, replace the foreach variable with the list item
if (LHS->getAsString() == RHSo->getOperand(i)->getAsString())