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SerializeSIL.cpp
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//===--- SerializeSIL.cpp - Read and write SIL ----------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "sil-serialize"
#include "SILFormat.h"
#include "Serialization.h"
#include "swift/AST/Module.h"
#include "swift/SIL/SILArgument.h"
#include "swift/SIL/SILModule.h"
#include "swift/SIL/SILUndef.h"
#include "llvm/ADT/MapVector.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/EndianStream.h"
#include "llvm/Support/OnDiskHashTable.h"
using namespace swift;
using namespace swift::serialization;
using namespace swift::serialization::sil_block;
using namespace llvm::support;
using llvm::BCBlockRAII;
static unsigned toStableStringEncoding(StringLiteralInst::Encoding encoding) {
switch (encoding) {
case StringLiteralInst::Encoding::UTF8: return SIL_UTF8;
case StringLiteralInst::Encoding::UTF16: return SIL_UTF16;
}
llvm_unreachable("bad string encoding");
}
static unsigned toStableSILLinkage(SILLinkage linkage) {
switch (linkage) {
case SILLinkage::Public: return SIL_LINKAGE_PUBLIC;
case SILLinkage::Hidden: return SIL_LINKAGE_HIDDEN;
case SILLinkage::Shared: return SIL_LINKAGE_SHARED;
case SILLinkage::Private: return SIL_LINKAGE_PRIVATE;
case SILLinkage::PublicExternal: return SIL_LINKAGE_PUBLIC_EXTERNAL;
case SILLinkage::HiddenExternal: return SIL_LINKAGE_HIDDEN_EXTERNAL;
case SILLinkage::SharedExternal: return SIL_LINKAGE_SHARED_EXTERNAL;
case SILLinkage::PrivateExternal: return SIL_LINKAGE_PRIVATE_EXTERNAL;
}
llvm_unreachable("bad linkage");
}
static unsigned toStableCastConsumptionKind(CastConsumptionKind kind) {
switch (kind) {
case CastConsumptionKind::TakeAlways:
return SIL_CAST_CONSUMPTION_TAKE_ALWAYS;
case CastConsumptionKind::TakeOnSuccess:
return SIL_CAST_CONSUMPTION_TAKE_ON_SUCCESS;
case CastConsumptionKind::CopyOnSuccess:
return SIL_CAST_CONSUMPTION_COPY_ON_SUCCESS;
}
llvm_unreachable("bad cast consumption kind");
}
namespace {
/// Used to serialize the on-disk func hash table.
class FuncTableInfo {
public:
using key_type = Identifier;
using key_type_ref = key_type;
using data_type = DeclID;
using data_type_ref = const data_type &;
using hash_value_type = uint32_t;
using offset_type = unsigned;
hash_value_type ComputeHash(key_type_ref key) {
assert(!key.empty());
return llvm::HashString(key.str());
}
std::pair<unsigned, unsigned> EmitKeyDataLength(raw_ostream &out,
key_type_ref key,
data_type_ref data) {
uint32_t keyLength = key.str().size();
uint32_t dataLength = sizeof(DeclID);
endian::Writer<little> writer(out);
writer.write<uint16_t>(keyLength);
writer.write<uint16_t>(dataLength);
return { keyLength, dataLength };
}
void EmitKey(raw_ostream &out, key_type_ref key, unsigned len) {
out << key.str();
}
void EmitData(raw_ostream &out, key_type_ref key, data_type_ref data,
unsigned len) {
static_assert(sizeof(DeclID) <= 32, "DeclID too large");
endian::Writer<little>(out).write<uint32_t>(data);
}
};
class SILSerializer {
Serializer &S;
ASTContext &Ctx;
llvm::BitstreamWriter &Out;
/// A reusable buffer for emitting records.
SmallVector<uint64_t, 64> ScratchRecord;
/// In case we want to encode the relative of InstID vs ValueID.
ValueID InstID = 0;
llvm::DenseMap<const ValueBase*, ValueID> ValueIDs;
ValueID addValueRef(SILValue SV) {
return addValueRef(SV.getDef());
}
ValueID addValueRef(const ValueBase *Val);
public:
using TableData = FuncTableInfo::data_type;
using Table = llvm::MapVector<FuncTableInfo::key_type, TableData>;
private:
/// FuncTable maps function name to an ID.
Table FuncTable;
std::vector<BitOffset> Funcs;
/// The current function ID.
DeclID FuncID = 1;
/// Maps class name to a VTable ID.
Table VTableList;
/// Holds the list of VTables.
std::vector<BitOffset> VTableOffset;
DeclID VTableID = 1;
/// Maps global variable name to an ID.
Table GlobalVarList;
/// Holds the list of SIL global variables.
std::vector<BitOffset> GlobalVarOffset;
DeclID GlobalVarID = 1;
/// Maps witness table identifier to an ID.
Table WitnessTableList;
/// Holds the list of WitnessTables.
std::vector<BitOffset> WitnessTableOffset;
DeclID WitnessTableID = 1;
/// Give each SILBasicBlock a unique ID.
llvm::DenseMap<const SILBasicBlock*, unsigned> BasicBlockMap;
/// Functions that we've emitted a reference to.
llvm::SmallSet<const SILFunction *, 16> FuncsToDeclare;
std::array<unsigned, 256> SILAbbrCodes;
template <typename Layout>
void registerSILAbbr() {
using AbbrArrayTy = decltype(SILAbbrCodes);
static_assert(Layout::Code <= std::tuple_size<AbbrArrayTy>::value,
"layout has invalid record code");
SILAbbrCodes[Layout::Code] = Layout::emitAbbrev(Out);
DEBUG(llvm::dbgs() << "SIL abbre code " << SILAbbrCodes[Layout::Code]
<< " for layout " << Layout::Code << "\n");
}
// TODO: this is not required anymore. Remove it.
bool ShouldSerializeAll;
/// Helper function to update ListOfValues for MethodInst. Format:
/// Attr, SILDeclRef (DeclID, Kind, uncurryLevel, IsObjC), and an operand.
void handleMethodInst(const MethodInst *MI, SILValue operand,
SmallVectorImpl<ValueID> &ListOfValues);
void writeSILFunction(const SILFunction &F, bool DeclOnly = false);
void writeSILBasicBlock(const SILBasicBlock &BB);
void writeSILInstruction(const SILInstruction &SI);
void writeSILVTable(const SILVTable &vt);
void writeSILGlobalVar(const SILGlobalVariable &g);
void writeSILWitnessTable(const SILWitnessTable &wt);
void writeSILBlock(const SILModule *SILMod);
void writeIndexTables();
void writeConversionLikeInstruction(const SILInstruction *I);
void writeOneTypeLayout(ValueKind valueKind, SILType type);
void writeOneTypeOneOperandLayout(ValueKind valueKind,
unsigned attrs,
SILType type,
SILValue operand);
void writeOneTypeOneOperandLayout(ValueKind valueKind,
unsigned attrs,
CanType type,
SILValue operand);
void writeOneOperandLayout(ValueKind valueKind,
unsigned attrs,
SILValue operand);
/// Helper function to determine if given the current state of the
/// deserialization if the function body for F should be deserialized.
bool shouldEmitFunctionBody(const SILFunction &F);
public:
SILSerializer(Serializer &S, ASTContext &Ctx,
llvm::BitstreamWriter &Out, bool serializeAll)
: S(S), Ctx(Ctx), Out(Out), ShouldSerializeAll(serializeAll) {}
void writeSILModule(const SILModule *SILMod);
};
} // end anonymous namespace
/// We enumerate all values in a SILFunction beforehand to correctly
/// handle forward references of values.
ValueID SILSerializer::addValueRef(const ValueBase *Val) {
if (!Val || isa<SILUndef>(Val))
return 0;
ValueID id = ValueIDs[Val];
assert(id != 0 && "We should have assigned a value ID to each value.");
return id;
}
void SILSerializer::writeSILFunction(const SILFunction &F, bool DeclOnly) {
ValueIDs.clear();
InstID = 0;
FuncTable[Ctx.getIdentifier(F.getName())] = FuncID++;
Funcs.push_back(Out.GetCurrentBitNo());
unsigned abbrCode = SILAbbrCodes[SILFunctionLayout::Code];
TypeID FnID = S.addTypeRef(F.getLoweredType().getSwiftType());
DEBUG(llvm::dbgs() << "SILFunction " << F.getName() << " @ BitNo "
<< Out.GetCurrentBitNo() << " abbrCode " << abbrCode
<< " FnID " << FnID << "\n");
DEBUG(llvm::dbgs() << "Serialized SIL:\n"; F.dump());
IdentifierID SemanticsID =
F.getSemanticsAttr().empty() ? (IdentifierID)0 :
S.addIdentifierRef(Ctx.getIdentifier(F.getSemanticsAttr()));
SILLinkage Linkage = F.getLinkage();
// We serialize shared_external linkage as shared since:
//
// 1. shared_external linkage is just a hack to tell the optimizer that a
// shared function was deserialized.
//
// 2. We can not just serialize a declaration to a shared_external function
// since shared_external functions still have linkonce_odr linkage at the LLVM
// level. This means they must be defined not just declared.
//
// TODO: When serialization is reworked, this should be removed.
if (hasSharedVisibility(Linkage))
Linkage = SILLinkage::Shared;
// Check if we need to emit a body for this function.
bool NoBody = DeclOnly || isAvailableExternally(Linkage) ||
F.isExternalDeclaration();
// If we don't emit a function body then make sure to mark the decleration
// as available externally.
if (NoBody) {
Linkage = addExternalToLinkage(Linkage);
}
SILFunctionLayout::emitRecord(
Out, ScratchRecord, abbrCode, toStableSILLinkage(Linkage),
(unsigned)F.isTransparent(), (unsigned)F.isFragile(),
(unsigned)F.isThunk(), (unsigned)F.isGlobalInit(),
(unsigned)F.getInlineStrategy(), (unsigned)F.getEffectsKind(),
FnID, SemanticsID);
if (NoBody)
return;
// Write the body's context archetypes, unless we don't actually have a body.
if (!F.isExternalDeclaration()) {
if (auto gp = F.getContextGenericParams()) {
// To help deserializing the context generic params, we serialize the
// outer-most list first. In most cases, we do not have decls associated
// with these parameter lists, so serialize the lists directly.
std::vector<GenericParamList *> paramLists;
for (; gp; gp = gp->getOuterParameters())
paramLists.push_back(gp);
for (unsigned i = 0, e = paramLists.size(); i < e; i++)
S.writeGenericParams(paramLists.rbegin()[i], SILAbbrCodes);
}
}
// Assign a unique ID to each basic block of the SILFunction.
unsigned BasicID = 0;
BasicBlockMap.clear();
// Assign a value ID to each SILInstruction that has value and to each basic
// block argument.
unsigned ValueID = 0;
for (const SILBasicBlock &BB : F) {
BasicBlockMap.insert(std::make_pair(&BB, BasicID++));
for (auto I = BB.bbarg_begin(), E = BB.bbarg_end(); I != E; ++I)
ValueIDs[static_cast<const ValueBase*>(*I)] = ++ValueID;
for (const SILInstruction &SI : BB)
if (SI.hasValue())
ValueIDs[&SI] = ++ValueID;
}
for (const SILBasicBlock &BB : F)
writeSILBasicBlock(BB);
}
void SILSerializer::writeSILBasicBlock(const SILBasicBlock &BB) {
SmallVector<DeclID, 4> Args;
for (auto I = BB.bbarg_begin(), E = BB.bbarg_end(); I != E; ++I) {
SILArgument *SA = *I;
DeclID tId = S.addTypeRef(SA->getType().getSwiftRValueType());
DeclID vId = addValueRef(static_cast<const ValueBase*>(SA));
Args.push_back(tId);
Args.push_back((unsigned)SA->getType().getCategory());
Args.push_back(vId);
}
unsigned abbrCode = SILAbbrCodes[SILBasicBlockLayout::Code];
SILBasicBlockLayout::emitRecord(Out, ScratchRecord, abbrCode, Args);
for (const SILInstruction &SI : BB)
writeSILInstruction(SI);
}
/// Add SILDeclRef to ListOfValues, so we can reconstruct it at
/// deserialization.
static void handleSILDeclRef(Serializer &S, const SILDeclRef &Ref,
SmallVectorImpl<ValueID> &ListOfValues) {
ListOfValues.push_back(S.addDeclRef(Ref.getDecl()));
ListOfValues.push_back((unsigned)Ref.kind);
ListOfValues.push_back((unsigned)Ref.getResilienceExpansion());
ListOfValues.push_back(Ref.uncurryLevel);
ListOfValues.push_back(Ref.isForeign);
}
/// Helper function to update ListOfValues for MethodInst. Format:
/// Attr, SILDeclRef (DeclID, Kind, uncurryLevel, IsObjC), and an operand.
void SILSerializer::handleMethodInst(const MethodInst *MI,
SILValue operand,
SmallVectorImpl<ValueID> &ListOfValues) {
ListOfValues.push_back(MI->isVolatile());
handleSILDeclRef(S, MI->getMember(), ListOfValues);
ListOfValues.push_back(
S.addTypeRef(operand.getType().getSwiftRValueType()));
ListOfValues.push_back((unsigned)operand.getType().getCategory());
ListOfValues.push_back(addValueRef(operand));
ListOfValues.push_back(operand.getResultNumber());
}
void SILSerializer::writeOneTypeLayout(ValueKind valueKind,
SILType type) {
unsigned abbrCode = SILAbbrCodes[SILOneTypeLayout::Code];
SILOneTypeLayout::emitRecord(Out, ScratchRecord, abbrCode,
(unsigned) valueKind,
S.addTypeRef(type.getSwiftRValueType()),
(unsigned)type.getCategory());
}
void SILSerializer::writeOneOperandLayout(ValueKind valueKind,
unsigned attrs,
SILValue operand) {
auto operandType = operand.getType();
auto operandTypeRef = S.addTypeRef(operandType.getSwiftRValueType());
auto operandRef = addValueRef(operand);
SILOneOperandLayout::emitRecord(Out, ScratchRecord,
SILAbbrCodes[SILOneOperandLayout::Code],
unsigned(valueKind), attrs,
operandTypeRef, unsigned(operandType.getCategory()),
operandRef, operand.getResultNumber());
}
void SILSerializer::writeOneTypeOneOperandLayout(ValueKind valueKind,
unsigned attrs,
SILType type,
SILValue operand) {
auto typeRef = S.addTypeRef(type.getSwiftRValueType());
auto operandType = operand.getType();
auto operandTypeRef = S.addTypeRef(operandType.getSwiftRValueType());
auto operandRef = addValueRef(operand);
SILOneTypeOneOperandLayout::emitRecord(Out, ScratchRecord,
SILAbbrCodes[SILOneTypeOneOperandLayout::Code],
unsigned(valueKind), attrs,
typeRef, unsigned(type.getCategory()),
operandTypeRef, unsigned(operandType.getCategory()),
operandRef, operand.getResultNumber());
}
void SILSerializer::writeOneTypeOneOperandLayout(ValueKind valueKind,
unsigned attrs,
CanType type,
SILValue operand) {
auto typeRef = S.addTypeRef(type);
auto operandType = operand.getType();
auto operandTypeRef = S.addTypeRef(operandType.getSwiftRValueType());
auto operandRef = addValueRef(operand);
SILOneTypeOneOperandLayout::emitRecord(Out, ScratchRecord,
SILAbbrCodes[SILOneTypeOneOperandLayout::Code],
unsigned(valueKind), attrs,
typeRef, 0,
operandTypeRef, unsigned(operandType.getCategory()),
operandRef, operand.getResultNumber());
}
/// Write an instruction that looks exactly like a conversion: all
/// important information is encoded in the operand and the result type.
void SILSerializer::writeConversionLikeInstruction(const SILInstruction *I) {
assert(I->getNumOperands() == 1);
assert(I->getNumTypes() == 1);
writeOneTypeOneOperandLayout(I->getKind(), 0, I->getType(0),
I->getOperand(0));
}
void SILSerializer::writeSILInstruction(const SILInstruction &SI) {
switch (SI.getKind()) {
case ValueKind::SILArgument:
case ValueKind::SILUndef:
llvm_unreachable("not an instruction");
case ValueKind::UnreachableInst: {
unsigned abbrCode = SILAbbrCodes[SILInstNoOperandLayout::Code];
SILInstNoOperandLayout::emitRecord(Out, ScratchRecord, abbrCode,
(unsigned)SI.getKind());
break;
}
case ValueKind::AllocExistentialBoxInst:
case ValueKind::InitExistentialAddrInst:
case ValueKind::InitExistentialMetatypeInst:
case ValueKind::InitExistentialRefInst: {
SILValue operand;
SILType Ty;
CanType FormalConcreteType;
ArrayRef<ProtocolConformance*> conformances;
switch (SI.getKind()) {
default: llvm_unreachable("out of sync with parent");
case ValueKind::InitExistentialAddrInst: {
auto &IEI = cast<InitExistentialAddrInst>(SI);
operand = IEI.getOperand();
Ty = IEI.getLoweredConcreteType();
FormalConcreteType = IEI.getFormalConcreteType();
conformances = IEI.getConformances();
break;
}
case ValueKind::InitExistentialRefInst: {
auto &IERI = cast<InitExistentialRefInst>(SI);
operand = IERI.getOperand();
Ty = IERI.getType();
FormalConcreteType = IERI.getFormalConcreteType();
conformances = IERI.getConformances();
break;
}
case ValueKind::InitExistentialMetatypeInst: {
auto &IEMI = cast<InitExistentialMetatypeInst>(SI);
operand = IEMI.getOperand();
Ty = IEMI.getType();
conformances = IEMI.getConformances();
break;
}
case ValueKind::AllocExistentialBoxInst: {
auto &AEBI = cast<AllocExistentialBoxInst>(SI);
Ty = AEBI.getExistentialType();
FormalConcreteType = AEBI.getFormalConcreteType();
conformances = AEBI.getConformances();
break;
}
}
TypeID operandType = 0;
SILValueCategory operandCategory = SILValueCategory::Object;
ValueID operandID = 0;
if (operand) {
operandType = S.addTypeRef(operand.getType().getSwiftRValueType());
operandCategory = operand.getType().getCategory();
operandID = addValueRef(operand);
}
unsigned abbrCode = SILAbbrCodes[SILInitExistentialLayout::Code];
SILInitExistentialLayout::emitRecord(Out, ScratchRecord, abbrCode,
(unsigned)SI.getKind(),
S.addTypeRef(Ty.getSwiftRValueType()),
(unsigned)Ty.getCategory(),
operandType,
(unsigned)operandCategory,
operandID,
operand.getResultNumber(),
S.addTypeRef(FormalConcreteType),
conformances.size());
for (auto conformance : conformances) {
S.writeConformance(conformance, SILAbbrCodes);
}
break;
}
case ValueKind::DeallocValueBufferInst: {
auto DVBI = cast<DeallocValueBufferInst>(&SI);
writeOneTypeOneOperandLayout(DVBI->getKind(), 0,
DVBI->getValueType(),
DVBI->getOperand());
break;
}
case ValueKind::DeallocBoxInst: {
auto DBI = cast<DeallocBoxInst>(&SI);
writeOneTypeOneOperandLayout(DBI->getKind(), 0,
DBI->getElementType(),
DBI->getOperand());
break;
}
case ValueKind::DeallocExistentialBoxInst: {
auto DBI = cast<DeallocExistentialBoxInst>(&SI);
writeOneTypeOneOperandLayout(DBI->getKind(), 0,
DBI->getConcreteType(),
DBI->getOperand());
break;
}
case ValueKind::ValueMetatypeInst: {
auto VMI = cast<ValueMetatypeInst>(&SI);
writeOneTypeOneOperandLayout(VMI->getKind(), 0,
VMI->getType(),
VMI->getOperand());
break;
}
case ValueKind::ExistentialMetatypeInst: {
auto EMI = cast<ExistentialMetatypeInst>(&SI);
writeOneTypeOneOperandLayout(EMI->getKind(), 0,
EMI->getType(),
EMI->getOperand());
break;
}
case ValueKind::AllocValueBufferInst: {
auto AVBI = cast<AllocValueBufferInst>(&SI);
writeOneTypeOneOperandLayout(AVBI->getKind(), 0,
AVBI->getValueType(),
AVBI->getOperand());
break;
}
case ValueKind::AllocBoxInst: {
const AllocBoxInst *ABI = cast<AllocBoxInst>(&SI);
writeOneTypeLayout(ABI->getKind(), ABI->getElementType());
break;
}
case ValueKind::AllocRefInst: {
const AllocRefInst *ARI = cast<AllocRefInst>(&SI);
unsigned abbrCode = SILAbbrCodes[SILOneTypeValuesLayout::Code];
ValueID Args[1] = { (unsigned)ARI->isObjC() |
((unsigned)ARI->canAllocOnStack() << 1) };
SILOneTypeValuesLayout::emitRecord(Out, ScratchRecord, abbrCode,
(unsigned)SI.getKind(),
S.addTypeRef(
ARI->getType().getSwiftRValueType()),
(unsigned)ARI->getType().getCategory(),
llvm::makeArrayRef(Args));
break;
}
case ValueKind::AllocRefDynamicInst: {
const AllocRefDynamicInst* ARD = cast<AllocRefDynamicInst>(&SI);
unsigned flags = 0;
if (ARD->isObjC())
flags = 1;
writeOneTypeOneOperandLayout(SI.getKind(), flags,
ARD->getType(), ARD->getOperand());
break;
}
case ValueKind::AllocStackInst: {
const AllocStackInst *ASI = cast<AllocStackInst>(&SI);
writeOneTypeLayout(ASI->getKind(), ASI->getElementType());
break;
}
case ValueKind::ProjectValueBufferInst: {
auto PVBI = cast<ProjectValueBufferInst>(&SI);
writeOneTypeOneOperandLayout(PVBI->getKind(), 0,
PVBI->getValueType(),
PVBI->getOperand());
break;
}
case ValueKind::ProjectBoxInst: {
auto PBI = cast<ProjectBoxInst>(&SI);
writeOneTypeOneOperandLayout(PBI->getKind(), 0,
PBI->getValueType(),
PBI->getOperand());
break;
}
case ValueKind::BuiltinInst: {
// Format: number of substitutions, the builtin name, result type, and
// a list of values for the arguments. Each value in the list
// is represented with 4 IDs:
// ValueID, ValueResultNumber, TypeID, TypeCategory.
// The record is followed by the substitution list.
const BuiltinInst *BI = cast<BuiltinInst>(&SI);
SmallVector<ValueID, 4> Args;
for (auto Arg : BI->getArguments()) {
Args.push_back(addValueRef(Arg));
Args.push_back(Arg.getResultNumber());
Args.push_back(S.addTypeRef(Arg.getType().getSwiftRValueType()));
Args.push_back((unsigned)Arg.getType().getCategory());
}
SILInstApplyLayout::emitRecord(Out, ScratchRecord,
SILAbbrCodes[SILInstApplyLayout::Code],
SIL_BUILTIN,
BI->getSubstitutions().size(),
S.addTypeRef(BI->getType().getSwiftRValueType()),
(unsigned)BI->getType().getCategory(),
S.addIdentifierRef(BI->getName()),
0,
Args);
S.writeSubstitutions(BI->getSubstitutions(), SILAbbrCodes);
break;
}
case ValueKind::ApplyInst: {
// Format: attributes such as transparent and number of substitutions,
// the callee's substituted and unsubstituted types, a value for
// the callee and a list of values for the arguments. Each value in the list
// is represented with 2 IDs: ValueID and ValueResultNumber. The record
// is followed by the substitution list.
const ApplyInst *AI = cast<ApplyInst>(&SI);
SmallVector<ValueID, 4> Args;
for (auto Arg: AI->getArguments()) {
Args.push_back(addValueRef(Arg));
Args.push_back(Arg.getResultNumber());
}
SILInstApplyLayout::emitRecord(Out, ScratchRecord,
SILAbbrCodes[SILInstApplyLayout::Code],
AI->isNonThrowing() ? SIL_NON_THROWING_APPLY : SIL_APPLY,
AI->getSubstitutions().size(),
S.addTypeRef(AI->getCallee().getType().getSwiftRValueType()),
S.addTypeRef(AI->getSubstCalleeType()),
addValueRef(AI->getCallee()), AI->getCallee().getResultNumber(),
Args);
S.writeSubstitutions(AI->getSubstitutions(), SILAbbrCodes);
break;
}
case ValueKind::TryApplyInst: {
// Format: attributes such as transparent and number of substitutions,
// the callee's substituted and unsubstituted types, a value for
// the callee and a list of values for the arguments. Each value in the list
// is represented with 2 IDs: ValueID and ValueResultNumber. The final two
// entries in the list are the basic block destinations. The record
// is followed by the substitution list.
const TryApplyInst *AI = cast<TryApplyInst>(&SI);
SmallVector<ValueID, 4> Args;
for (auto Arg: AI->getArguments()) {
Args.push_back(addValueRef(Arg));
Args.push_back(Arg.getResultNumber());
}
Args.push_back(BasicBlockMap[AI->getNormalBB()]);
Args.push_back(BasicBlockMap[AI->getErrorBB()]);
SILInstApplyLayout::emitRecord(Out, ScratchRecord,
SILAbbrCodes[SILInstApplyLayout::Code], SIL_TRY_APPLY,
AI->getSubstitutions().size(),
S.addTypeRef(AI->getCallee().getType().getSwiftRValueType()),
S.addTypeRef(AI->getSubstCalleeType()),
addValueRef(AI->getCallee()), AI->getCallee().getResultNumber(),
Args);
S.writeSubstitutions(AI->getSubstitutions(), SILAbbrCodes);
break;
}
case ValueKind::PartialApplyInst: {
const PartialApplyInst *PAI = cast<PartialApplyInst>(&SI);
SmallVector<ValueID, 4> Args;
for (auto Arg: PAI->getArguments()) {
Args.push_back(addValueRef(Arg));
Args.push_back(Arg.getResultNumber());
}
SILInstApplyLayout::emitRecord(Out, ScratchRecord,
SILAbbrCodes[SILInstApplyLayout::Code], SIL_PARTIAL_APPLY,
PAI->getSubstitutions().size(),
S.addTypeRef(PAI->getCallee().getType().getSwiftRValueType()),
S.addTypeRef(PAI->getSubstCalleeType()),
addValueRef(PAI->getCallee()), PAI->getCallee().getResultNumber(),
Args);
S.writeSubstitutions(PAI->getSubstitutions(), SILAbbrCodes);
break;
}
case ValueKind::GlobalAddrInst: {
// Format: Name and type. Use SILOneOperandLayout.
const GlobalAddrInst *GAI = cast<GlobalAddrInst>(&SI);
SILOneOperandLayout::emitRecord(Out, ScratchRecord,
SILAbbrCodes[SILOneOperandLayout::Code],
(unsigned)SI.getKind(), 0,
S.addTypeRef(GAI->getType().getSwiftRValueType()),
(unsigned)GAI->getType().getCategory(),
S.addIdentifierRef(
Ctx.getIdentifier(GAI->getReferencedGlobal()->getName())),
0);
break;
}
case ValueKind::BranchInst: {
// Format: destination basic block ID, a list of arguments. Use
// SILOneTypeValuesLayout.
const BranchInst *BrI = cast<BranchInst>(&SI);
SmallVector<ValueID, 4> ListOfValues;
for (auto Elt : BrI->getArgs()) {
ListOfValues.push_back(S.addTypeRef(Elt.getType().getSwiftRValueType()));
ListOfValues.push_back((unsigned)Elt.getType().getCategory());
ListOfValues.push_back(addValueRef(Elt));
ListOfValues.push_back(Elt.getResultNumber());
}
SILOneTypeValuesLayout::emitRecord(Out, ScratchRecord,
SILAbbrCodes[SILOneTypeValuesLayout::Code],
(unsigned)SI.getKind(),
BasicBlockMap[BrI->getDestBB()], 0, ListOfValues);
break;
}
case ValueKind::CondBranchInst: {
// Format: condition, true basic block ID, a list of arguments, false basic
// block ID, a list of arguments. Use SILOneTypeValuesLayout: the type is
// for condition, the list has value for condition, true basic block ID,
// false basic block ID, number of true arguments, and a list of true|false
// arguments.
const CondBranchInst *CBI = cast<CondBranchInst>(&SI);
SmallVector<ValueID, 4> ListOfValues;
ListOfValues.push_back(addValueRef(CBI->getCondition()));
ListOfValues.push_back(CBI->getCondition().getResultNumber());
ListOfValues.push_back(BasicBlockMap[CBI->getTrueBB()]);
ListOfValues.push_back(BasicBlockMap[CBI->getFalseBB()]);
ListOfValues.push_back(CBI->getTrueArgs().size());
for (auto Elt : CBI->getTrueArgs()) {
ListOfValues.push_back(S.addTypeRef(Elt.getType().getSwiftRValueType()));
ListOfValues.push_back((unsigned)Elt.getType().getCategory());
ListOfValues.push_back(addValueRef(Elt));
ListOfValues.push_back(Elt.getResultNumber());
}
for (auto Elt : CBI->getFalseArgs()) {
ListOfValues.push_back(S.addTypeRef(Elt.getType().getSwiftRValueType()));
ListOfValues.push_back((unsigned)Elt.getType().getCategory());
ListOfValues.push_back(addValueRef(Elt));
ListOfValues.push_back(Elt.getResultNumber());
}
SILOneTypeValuesLayout::emitRecord(Out, ScratchRecord,
SILAbbrCodes[SILOneTypeValuesLayout::Code],
(unsigned)SI.getKind(),
S.addTypeRef(CBI->getCondition().getType().getSwiftRValueType()),
(unsigned)CBI->getCondition().getType().getCategory(),
ListOfValues);
break;
}
case ValueKind::SwitchEnumInst:
case ValueKind::SwitchEnumAddrInst: {
// Format: condition, a list of cases (EnumElementDecl + Basic Block ID),
// default basic block ID. Use SILOneTypeValuesLayout: the type is
// for condition, the list has value for condition, hasDefault, default
// basic block ID, a list of (DeclID, BasicBlock ID).
const SwitchEnumInstBase *SOI = cast<SwitchEnumInstBase>(&SI);
SmallVector<ValueID, 4> ListOfValues;
ListOfValues.push_back(addValueRef(SOI->getOperand()));
ListOfValues.push_back(SOI->getOperand().getResultNumber());
ListOfValues.push_back((unsigned)SOI->hasDefault());
if (SOI->hasDefault())
ListOfValues.push_back(BasicBlockMap[SOI->getDefaultBB()]);
else
ListOfValues.push_back(0);
for (unsigned i = 0, e = SOI->getNumCases(); i < e; ++i) {
EnumElementDecl *elt;
SILBasicBlock *dest;
std::tie(elt, dest) = SOI->getCase(i);
ListOfValues.push_back(S.addDeclRef(elt));
ListOfValues.push_back(BasicBlockMap[dest]);
}
SILOneTypeValuesLayout::emitRecord(Out, ScratchRecord,
SILAbbrCodes[SILOneTypeValuesLayout::Code],
(unsigned)SI.getKind(),
S.addTypeRef(SOI->getOperand().getType().getSwiftRValueType()),
(unsigned)SOI->getOperand().getType().getCategory(),
ListOfValues);
break;
}
case ValueKind::SelectEnumInst:
case ValueKind::SelectEnumAddrInst: {
// Format: condition, a list of cases (EnumElementDecl + Value ID),
// default value ID. Use SILOneTypeValuesLayout: the type is
// for condition, the list has value for condition, result type,
// hasDefault, default
// basic block ID, a list of (DeclID, BasicBlock ID).
const SelectEnumInstBase *SOI = cast<SelectEnumInstBase>(&SI);
SmallVector<ValueID, 4> ListOfValues;
ListOfValues.push_back(addValueRef(SOI->getEnumOperand()));
ListOfValues.push_back(SOI->getEnumOperand().getResultNumber());
ListOfValues.push_back(S.addTypeRef(SOI->getType().getSwiftRValueType()));
ListOfValues.push_back((unsigned)SOI->getType().getCategory());
ListOfValues.push_back((unsigned)SOI->hasDefault());
if (SOI->hasDefault()) {
ListOfValues.push_back(addValueRef(SOI->getDefaultResult()));
ListOfValues.push_back(SOI->getDefaultResult().getResultNumber());
} else {
ListOfValues.push_back(0);
ListOfValues.push_back(0);
}
for (unsigned i = 0, e = SOI->getNumCases(); i < e; ++i) {
EnumElementDecl *elt;
SILValue result;
std::tie(elt, result) = SOI->getCase(i);
ListOfValues.push_back(S.addDeclRef(elt));
ListOfValues.push_back(addValueRef(result));
ListOfValues.push_back(result.getResultNumber());
}
SILOneTypeValuesLayout::emitRecord(Out, ScratchRecord,
SILAbbrCodes[SILOneTypeValuesLayout::Code],
(unsigned)SI.getKind(),
S.addTypeRef(SOI->getEnumOperand().getType().getSwiftRValueType()),
(unsigned)SOI->getEnumOperand().getType().getCategory(),
ListOfValues);
break;
}
case ValueKind::SwitchValueInst: {
// Format: condition, a list of cases (Value ID + Basic Block ID),
// default basic block ID. Use SILOneTypeValuesLayout: the type is
// for condition, the list contains value for condition, hasDefault, default
// basic block ID, a list of (Value ID, BasicBlock ID).
const SwitchValueInst *SII = cast<SwitchValueInst>(&SI);
SmallVector<ValueID, 4> ListOfValues;
ListOfValues.push_back(addValueRef(SII->getOperand()));
ListOfValues.push_back(SII->getOperand().getResultNumber());
ListOfValues.push_back((unsigned)SII->hasDefault());
if (SII->hasDefault())
ListOfValues.push_back(BasicBlockMap[SII->getDefaultBB()]);
else
ListOfValues.push_back(0);
for (unsigned i = 0, e = SII->getNumCases(); i < e; ++i) {
SILValue value;
SILBasicBlock *dest;
std::tie(value, dest) = SII->getCase(i);
ListOfValues.push_back(addValueRef(value));
ListOfValues.push_back(value.getResultNumber());
ListOfValues.push_back(BasicBlockMap[dest]);
}
SILOneTypeValuesLayout::emitRecord(Out, ScratchRecord,
SILAbbrCodes[SILOneTypeValuesLayout::Code],
(unsigned)SI.getKind(),
S.addTypeRef(SII->getOperand().getType().getSwiftRValueType()),
(unsigned)SII->getOperand().getType().getCategory(),
ListOfValues);
break;
}
case ValueKind::SelectValueInst: {
// Format: condition, a list of cases (Value ID + Value ID),
// default value ID. Use SILOneTypeValuesLayout: the type is
// for condition, the list has value for condition, result type,
// hasDefault, default
// basic block ID, a list of (Value ID, Value ID).
const SelectValueInst *SVI = cast<SelectValueInst>(&SI);
SmallVector<ValueID, 4> ListOfValues;
ListOfValues.push_back(addValueRef(SVI->getOperand()));
ListOfValues.push_back(SVI->getOperand().getResultNumber());
ListOfValues.push_back(S.addTypeRef(SVI->getType().getSwiftRValueType()));
ListOfValues.push_back((unsigned)SVI->getType().getCategory());
ListOfValues.push_back((unsigned)SVI->hasDefault());
if (SVI->hasDefault()) {
ListOfValues.push_back(addValueRef(SVI->getDefaultResult()));
ListOfValues.push_back(SVI->getDefaultResult().getResultNumber());
} else {
ListOfValues.push_back(0);
ListOfValues.push_back(0);
}
for (unsigned i = 0, e = SVI->getNumCases(); i < e; ++i) {
SILValue casevalue;
SILValue result;
std::tie(casevalue, result) = SVI->getCase(i);
ListOfValues.push_back(addValueRef(casevalue));
ListOfValues.push_back(casevalue.getResultNumber());
ListOfValues.push_back(addValueRef(result));
ListOfValues.push_back(result.getResultNumber());
}
SILOneTypeValuesLayout::emitRecord(Out, ScratchRecord,
SILAbbrCodes[SILOneTypeValuesLayout::Code],
(unsigned)SI.getKind(),
S.addTypeRef(SVI->getOperand().getType().getSwiftRValueType()),
(unsigned)SVI->getOperand().getType().getCategory(),
ListOfValues);
break;
}
case ValueKind::CondFailInst:
case ValueKind::RetainValueInst:
case ValueKind::ReleaseValueInst:
case ValueKind::AutoreleaseValueInst:
case ValueKind::DeallocStackInst:
case ValueKind::DeallocRefInst:
case ValueKind::DeinitExistentialAddrInst:
case ValueKind::DestroyAddrInst:
case ValueKind::IsNonnullInst:
case ValueKind::LoadInst:
case ValueKind::LoadWeakInst:
case ValueKind::MarkUninitializedInst:
case ValueKind::FixLifetimeInst:
case ValueKind::CopyBlockInst:
case ValueKind::StrongPinInst:
case ValueKind::StrongReleaseInst:
case ValueKind::StrongRetainInst:
case ValueKind::StrongRetainAutoreleasedInst:
case ValueKind::StrongUnpinInst:
case ValueKind::AutoreleaseReturnInst:
case ValueKind::StrongRetainUnownedInst:
case ValueKind::UnownedRetainInst:
case ValueKind::UnownedReleaseInst:
case ValueKind::IsUniqueInst:
case ValueKind::IsUniqueOrPinnedInst:
case ValueKind::ReturnInst:
case ValueKind::ThrowInst:
case ValueKind::DebugValueInst:
case ValueKind::DebugValueAddrInst: {
unsigned Attr = 0;
if (auto *LWI = dyn_cast<LoadWeakInst>(&SI))
Attr = LWI->isTake();
else if (auto *MUI = dyn_cast<MarkUninitializedInst>(&SI))
Attr = (unsigned)MUI->getKind();
else if (auto *DRI = dyn_cast<DeallocRefInst>(&SI))
Attr = (unsigned)DRI->canAllocOnStack();
writeOneOperandLayout(SI.getKind(), Attr, SI.getOperand(0));
break;
}
case ValueKind::FunctionRefInst: {
// Use SILOneOperandLayout to specify the function type and the function
// name (IdentifierID).
const FunctionRefInst *FRI = cast<FunctionRefInst>(&SI);
SILFunction *ReferencedFunction = FRI->getReferencedFunction();
unsigned abbrCode = SILAbbrCodes[SILOneOperandLayout::Code];
SILOneOperandLayout::emitRecord(Out, ScratchRecord, abbrCode,
(unsigned)SI.getKind(), 0,
S.addTypeRef(FRI->getType().getSwiftRValueType()),
(unsigned)FRI->getType().getCategory(),
S.addIdentifierRef(Ctx.getIdentifier(ReferencedFunction->getName())),
0);
// Make sure we declare the referenced function.
FuncsToDeclare.insert(ReferencedFunction);
break;
}
case ValueKind::DeallocPartialRefInst:
case ValueKind::MarkDependenceInst:
case ValueKind::IndexAddrInst:
case ValueKind::IndexRawPointerInst: {
SILValue operand, operand2;
unsigned Attr = 0;
if (SI.getKind() == ValueKind::DeallocPartialRefInst) {
const DeallocPartialRefInst *DPRI = cast<DeallocPartialRefInst>(&SI);
operand = DPRI->getInstance();
operand2 = DPRI->getMetatype();
} else if (SI.getKind() == ValueKind::IndexRawPointerInst) {
const IndexRawPointerInst *IRP = cast<IndexRawPointerInst>(&SI);
operand = IRP->getBase();
operand2 = IRP->getIndex();
} else if (SI.getKind() == ValueKind::MarkDependenceInst) {
const MarkDependenceInst *MDI = cast<MarkDependenceInst>(&SI);
operand = MDI->getValue();
operand2 = MDI->getBase();
} else {
const IndexAddrInst *IAI = cast<IndexAddrInst>(&SI);
operand = IAI->getBase();
operand2 = IAI->getIndex();
}
SILTwoOperandsLayout::emitRecord(Out, ScratchRecord,
SILAbbrCodes[SILTwoOperandsLayout::Code],
(unsigned)SI.getKind(), Attr,
S.addTypeRef(operand.getType().getSwiftRValueType()),
(unsigned)operand.getType().getCategory(),
addValueRef(operand), operand.getResultNumber(),
S.addTypeRef(operand2.getType().getSwiftRValueType()),
(unsigned)operand2.getType().getCategory(),
addValueRef(operand2), operand2.getResultNumber());
break;
}
case ValueKind::StringLiteralInst: {
auto SLI = cast<StringLiteralInst>(&SI);
StringRef Str = SLI->getValue();
unsigned abbrCode = SILAbbrCodes[SILOneOperandLayout::Code];
unsigned encoding = toStableStringEncoding(SLI->getEncoding());
SILOneOperandLayout::emitRecord(Out, ScratchRecord, abbrCode,
(unsigned)SI.getKind(), encoding, 0, 0,
S.addIdentifierRef(Ctx.getIdentifier(Str)),
0);
break;
}
case ValueKind::FloatLiteralInst:
case ValueKind::IntegerLiteralInst: {
// Use SILOneOperandLayout to specify the type and the literal.
std::string Str;
SILType Ty;
switch (SI.getKind()) {
default: llvm_unreachable("Out of sync with parent switch");
case ValueKind::IntegerLiteralInst:
Str = cast<IntegerLiteralInst>(&SI)->getValue().toString(10, true);
Ty = cast<IntegerLiteralInst>(&SI)->getType();
break;
case ValueKind::FloatLiteralInst:
Str = cast<FloatLiteralInst>(&SI)->getBits().toString(16,
/*Signed*/false);
Ty = cast<FloatLiteralInst>(&SI)->getType();
break;
}