std::string FunctionSignatureInfo::getOptimizedName() const {
Mangle::Mangler M;
auto P = SpecializationPass::FunctionSignatureOpts;
FunctionSignatureSpecializationMangler FSSM(P, M, F);
// Handle arguments' changes.
for (unsigned i : indices(ArgDescList)) {
const ArgumentDescriptor &Arg = ArgDescList[i];
if (Arg.IsEntirelyDead) {
FSSM.setArgumentDead(i);
}
// If we have an @owned argument and found a callee release for it,
// convert the argument to guaranteed.
if (!Arg.CalleeRelease.empty()) {
FSSM.setArgumentOwnedToGuaranteed(i);
}
// If this argument is not dead and we can explode it, add 's' to the
// mangling.
if (Arg.Explode && !Arg.IsEntirelyDead) {
FSSM.setArgumentSROA(i);
}
}
// Handle return value's change.
// FIXME: handle multiple direct results here
if (ResultDescList.size() == 1 &&
!ResultDescList[0].CalleeRetain.empty())
FSSM.setReturnValueOwnedToUnowned();
FSSM.mangle();
return M.finalize();
}
/// Create a getter function from the initializer function.
static SILFunction *genGetterFromInit(SILFunction *InitF, VarDecl *varDecl) {
// Generate a getter from the global init function without side-effects.
Mangle::Mangler getterMangler;
getterMangler.mangleGlobalGetterEntity(varDecl);
auto getterName = getterMangler.finalize();
// Check if a getter was generated already.
if (auto *F = InitF->getModule().lookUpFunction(getterName))
return F;
auto refType = varDecl->getType().getCanonicalTypeOrNull();
// Function takes no arguments and returns refType
SILResultInfo ResultInfo(refType, ResultConvention::Owned);
SILFunctionType::ExtInfo EInfo;
EInfo = EInfo.withRepresentation(SILFunctionType::Representation::Thin);
auto LoweredType = SILFunctionType::get(nullptr, EInfo,
ParameterConvention::Direct_Owned, { }, ResultInfo, None,
InitF->getASTContext());
auto *GetterF = InitF->getModule().getOrCreateFunction(InitF->getLocation(),
getterName, SILLinkage::PrivateExternal, LoweredType,
IsBare_t::IsBare, IsTransparent_t::IsNotTransparent,
IsFragile_t::IsFragile);
auto *EntryBB = GetterF->createBasicBlock();
// Copy InitF into GetterF
BasicBlockCloner Cloner(&*InitF->begin(), EntryBB, /*WithinFunction=*/false);
Cloner.clone();
GetterF->setInlined();
// Find the store instruction
auto BB = EntryBB;
SILValue Val;
SILInstruction *Store;
for (auto II = BB->begin(), E = BB->end(); II != E;) {
auto &I = *II++;
if (isa<AllocGlobalInst>(&I)) {
I.eraseFromParent();
continue;
}
if (StoreInst *SI = dyn_cast<StoreInst>(&I)) {
Val = SI->getSrc();
Store = SI;
continue;
}
if (ReturnInst *RI = dyn_cast<ReturnInst>(&I)) {
SILBuilderWithScope B(RI);
B.createReturn(RI->getLoc(), Val);
eraseUsesOfInstruction(RI);
recursivelyDeleteTriviallyDeadInstructions(RI, true);
recursivelyDeleteTriviallyDeadInstructions(Store, true);
return GetterF;
}
}
InitF->getModule().getFunctionList().addNodeToList(GetterF);
return GetterF;
}
std::string FunctionAnalyzer::getOptimizedName() {
Mangle::Mangler M;
auto P = SpecializationPass::FunctionSignatureOpts;
FunctionSignatureSpecializationMangler FSSM(P, M, F);
for (unsigned i : indices(ArgDescList)) {
const ArgumentDescriptor &Arg = ArgDescList[i];
if (Arg.IsDead) {
FSSM.setArgumentDead(i);
}
// If we have an @owned argument and found a callee release for it,
// convert the argument to guaranteed.
if (Arg.CalleeRelease) {
FSSM.setArgumentOwnedToGuaranteed(i);
}
// If this argument is not dead and we can explode it, add 's' to the
// mangling.
if (Arg.shouldExplode() && !Arg.IsDead) {
FSSM.setArgumentSROA(i);
}
}
FSSM.mangle();
return M.finalize();
}
void addDecl(const NominalTypeDecl *decl) {
auto type = decl->getDeclaredInterfaceType()->getCanonicalType();
Mangle::Mangler mangler;
mangler.setModuleContext(decl->getModuleContext());
mangler.mangleType(type, 0);
auto mangledName = IGM.getAddrOfStringForTypeRef(mangler.finalize());
addRelativeAddress(mangledName);
switch (decl->getKind()) {
case DeclKind::Class:
case DeclKind::Struct: {
auto properties = decl->getStoredProperties();
addConstantInt32(std::distance(properties.begin(), properties.end()));
addConstantInt32(fieldRecordSize);
for (auto property : properties)
addFieldDecl(property);
break;
}
case DeclKind::Enum: {
auto enumDecl = cast<EnumDecl>(decl);
auto cases = enumDecl->getAllElements();
addConstantInt32(std::distance(cases.begin(), cases.end()));
addConstantInt32(fieldRecordSize);
for (auto enumCase : cases)
addFieldDecl(enumCase);
break;
}
default:
llvm_unreachable("Not a nominal type");
break;
}
}
static std::string getClonedName(SILFunction *F,
ParamIndexList &PromotedParamIndices) {
Mangle::Mangler M;
auto P = SpecializationPass::AllocBoxToStack;
FunctionSignatureSpecializationMangler FSSM(P, M, F);
for (unsigned i : PromotedParamIndices)
FSSM.setArgumentBoxToStack(i);
FSSM.mangle();
return M.finalize();
}
static std::string mangleGetter(VarDecl *varDecl) {
Mangle::Mangler getterMangler;
getterMangler.append("_T");
getterMangler.mangleGlobalGetterEntity(varDecl);
std::string Old = getterMangler.finalize();
NewMangling::ASTMangler NewMangler;
std::string New = NewMangler.mangleGlobalGetterEntity(varDecl);
return NewMangling::selectMangling(Old, New);
}
void addFieldDecl(const ValueDecl *value) {
auto type = value->getInterfaceType()->getCanonicalType();
Mangle::Mangler mangler;
mangler.setModuleContext(value->getModuleContext());
mangler.mangleType(type, 0);
auto mangledName = IGM.getAddrOfStringForTypeRef(mangler.finalize());
addRelativeAddress(mangledName);
if (IGM.Opts.StripReflectionNames) {
addConstantInt32(0);
} else {
auto fieldName = IGM.getAddrOfFieldName(value->getNameStr());
addRelativeAddress(fieldName);
}
}
std::string CallSiteDescriptor::createName() const {
Mangle::Mangler M;
auto P = SpecializationPass::ClosureSpecializer;
FunctionSignatureSpecializationMangler FSSM(P, M, getApplyCallee());
if (auto *PAI = dyn_cast<PartialApplyInst>(getClosure())) {
FSSM.setArgumentClosureProp(getClosureIndex(), PAI);
FSSM.mangle();
return M.finalize();
}
auto *TTTFI = cast<ThinToThickFunctionInst>(getClosure());
FSSM.setArgumentClosureProp(getClosureIndex(), TTTFI);
FSSM.mangle();
return M.finalize();
}
std::string CallSiteDescriptor::createName() const {
Mangle::Mangler M;
auto P = Demangle::SpecializationPass::ClosureSpecializer;
FunctionSignatureSpecializationMangler OldFSSM(P, M, isFragile(),
getApplyCallee());
NewMangling::FunctionSignatureSpecializationMangler NewFSSM(P, isFragile(),
getApplyCallee());
if (auto *PAI = dyn_cast<PartialApplyInst>(getClosure())) {
OldFSSM.setArgumentClosureProp(getClosureIndex(), PAI);
NewFSSM.setArgumentClosureProp(getClosureIndex(), PAI);
} else {
auto *TTTFI = cast<ThinToThickFunctionInst>(getClosure());
OldFSSM.setArgumentClosureProp(getClosureIndex(), TTTFI);
NewFSSM.setArgumentClosureProp(getClosureIndex(), TTTFI);
}
OldFSSM.mangle();
std::string Old = M.finalize();
std::string New = NewFSSM.mangle();
return NewMangling::selectMangling(Old, New);
}
GenericFuncSpecializer::GenericFuncSpecializer(SILFunction *GenericFunc,
ArrayRef<Substitution> ParamSubs,
IsFragile_t Fragile,
const ReabstractionInfo &ReInfo)
: M(GenericFunc->getModule()),
GenericFunc(GenericFunc),
ParamSubs(ParamSubs),
Fragile(Fragile),
ReInfo(ReInfo) {
assert(GenericFunc->isDefinition() && "Expected definition to specialize!");
if (GenericFunc->getContextGenericParams())
ContextSubs = GenericFunc->getContextGenericParams()
->getSubstitutionMap(ParamSubs);
Mangle::Mangler Mangler;
GenericSpecializationMangler GenericMangler(Mangler, GenericFunc,
ParamSubs, Fragile);
GenericMangler.mangle();
ClonedName = Mangler.finalize();
DEBUG(llvm::dbgs() << " Specialized function " << ClonedName << '\n');
}
/// Generate getter from the initialization code whose
/// result is stored by a given store instruction.
static SILFunction *genGetterFromInit(StoreInst *Store,
SILGlobalVariable *SILG) {
auto *varDecl = SILG->getDecl();
Mangle::Mangler getterMangler;
getterMangler.mangleGlobalGetterEntity(varDecl);
auto getterName = getterMangler.finalize();
// Check if a getter was generated already.
if (auto *F = Store->getModule().lookUpFunction(getterName))
return F;
// Find the code that performs the initialization first.
// Recursively walk the SIL value being assigned to the SILG.
auto V = Store->getSrc();
SmallVector<SILInstruction *, 8> ReverseInsns;
SmallVector<SILInstruction *, 8> Insns;
ReverseInsns.push_back(Store);
ReverseInsns.push_back(dyn_cast<SILInstruction>(Store->getDest()));
if (!analyzeStaticInitializer(V, ReverseInsns))
return nullptr;
// Produce a correct order of instructions.
while (!ReverseInsns.empty()) {
Insns.push_back(ReverseInsns.pop_back_val());
}
// Generate a getter from the global init function without side-effects.
auto refType = varDecl->getType().getCanonicalTypeOrNull();
// Function takes no arguments and returns refType
SILResultInfo ResultInfo(refType, ResultConvention::Owned);
SILFunctionType::ExtInfo EInfo;
EInfo = EInfo.withRepresentation(SILFunctionType::Representation::Thin);
auto LoweredType = SILFunctionType::get(nullptr, EInfo,
ParameterConvention::Direct_Owned, { }, ResultInfo, None,
Store->getModule().getASTContext());
auto *GetterF = Store->getModule().getOrCreateFunction(Store->getLoc(),
getterName, SILLinkage::PrivateExternal, LoweredType,
IsBare_t::IsBare, IsTransparent_t::IsNotTransparent,
IsFragile_t::IsFragile);
GetterF->setDebugScope(Store->getFunction()->getDebugScope());
auto *EntryBB = GetterF->createBasicBlock();
// Copy instructions into GetterF
InstructionsCloner Cloner(*GetterF, Insns, EntryBB);
Cloner.clone();
GetterF->setInlined();
// Find the store instruction
auto BB = EntryBB;
SILValue Val;
for (auto &I : *BB) {
if (StoreInst *SI = dyn_cast<StoreInst>(&I)) {
Val = SI->getSrc();
SILBuilderWithScope B(SI);
B.createReturn(SI->getLoc(), Val);
eraseUsesOfInstruction(SI);
recursivelyDeleteTriviallyDeadInstructions(SI, true);
return GetterF;
}
}
Store->getModule().getFunctionList().addNodeToList(GetterF);
return GetterF;
}
SILFunction *MaterializeForSetEmitter::createCallback(SILFunction &F, GeneratorFn generator) {
auto &ctx = SGM.getASTContext();
// Mangle this as if it were a conformance thunk for a closure
// within the witness.
std::string name;
{
ClosureExpr closure(/*patterns*/ nullptr,
/*throws*/ SourceLoc(),
/*arrow*/ SourceLoc(),
/*in*/ SourceLoc(),
/*result*/ TypeLoc(),
/*discriminator*/ 0,
/*context*/ Witness);
closure.setType(getMaterializeForSetCallbackType(ctx,
getSelfTypeForCallbackDeclaration(Witness)));
closure.getCaptureInfo().setGenericParamCaptures(true);
Mangle::Mangler mangler;
if (Conformance) {
mangler.append("_TTW");
mangler.mangleProtocolConformance(Conformance);
} else {
mangler.append("_T");
}
mangler.mangleClosureEntity(&closure, /*uncurryLevel=*/1);
name = mangler.finalize();
}
// Get lowered formal types for callback parameters.
Type selfType = SelfInterfaceType;
Type selfMetatypeType = MetatypeType::get(SelfInterfaceType,
MetatypeRepresentation::Thick);
{
GenericContextScope scope(SGM.Types, GenericSig);
// If 'self' is a metatype, make it @thin or @thick as needed, but not inside
// selfMetatypeType.
if (auto metatype = selfType->getAs<MetatypeType>()) {
if (!metatype->hasRepresentation())
selfType = SGM.getLoweredType(metatype).getSwiftRValueType();
}
}
// Create the SILFunctionType for the callback.
SILParameterInfo params[] = {
{ ctx.TheRawPointerType, ParameterConvention::Direct_Unowned },
{ ctx.TheUnsafeValueBufferType, ParameterConvention::Indirect_Inout },
{ selfType->getCanonicalType(), ParameterConvention::Indirect_Inout },
{ selfMetatypeType->getCanonicalType(), ParameterConvention::Direct_Unowned },
};
SILResultInfo result = {
TupleType::getEmpty(ctx), ResultConvention::Unowned
};
auto extInfo =
SILFunctionType::ExtInfo()
.withRepresentation(SILFunctionTypeRepresentation::Thin);
auto callbackType = SILFunctionType::get(GenericSig, extInfo,
/*callee*/ ParameterConvention::Direct_Unowned,
params, result, None, ctx);
auto callback =
SGM.M.getOrCreateFunction(Witness, name, Linkage, callbackType,
IsBare,
F.isTransparent(),
F.isFragile());
callback->setContextGenericParams(GenericParams);
callback->setDebugScope(new (SGM.M) SILDebugScope(Witness, *callback));
PrettyStackTraceSILFunction X("silgen materializeForSet callback", callback);
{
SILGenFunction gen(SGM, *callback);
auto makeParam = [&](unsigned index) -> SILArgument* {
SILType type = gen.F.mapTypeIntoContext(params[index].getSILType());
return new (SGM.M) SILArgument(gen.F.begin(), type);
};
// Add arguments for all the parameters.
auto valueBuffer = makeParam(0);
auto storageBuffer = makeParam(1);
auto self = makeParam(2);
(void) makeParam(3);
SILLocation loc = Witness;
loc.markAutoGenerated();
// Call the generator function we were provided.
{
LexicalScope scope(gen.Cleanups, gen, CleanupLocation::get(loc));
generator(gen, loc, valueBuffer, storageBuffer, self);
}
// Return void.
auto result = gen.emitEmptyTuple(loc);
gen.B.createReturn(loc, result);
}
callback->verify();
return callback;
}
