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SILPrinter.cpp
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//===--- SILPrinter.cpp - Pretty-printing of SIL Code ---------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
///
/// \file
///
/// This file defines the logic to pretty-print SIL, Instructions, etc.
///
//===----------------------------------------------------------------------===//
#include "swift/AST/Decl.h"
#include "swift/AST/GenericEnvironment.h"
#include "swift/AST/Module.h"
#include "swift/AST/PrintOptions.h"
#include "swift/AST/ProtocolConformance.h"
#include "swift/AST/Types.h"
#include "swift/Basic/Assertions.h"
#include "swift/Basic/QuotedString.h"
#include "swift/Basic/STLExtras.h"
#include "swift/Basic/SourceManager.h"
#include "swift/Demangling/Demangle.h"
#include "swift/SIL/ApplySite.h"
#include "swift/SIL/CFG.h"
#include "swift/SIL/InstructionUtils.h"
#include "swift/SIL/SILArgument.h"
#include "swift/SIL/SILCoverageMap.h"
#include "swift/SIL/SILDebugScope.h"
#include "swift/SIL/SILDeclRef.h"
#include "swift/SIL/SILFunction.h"
#include "swift/SIL/SILInstruction.h"
#include "swift/SIL/SILModule.h"
#include "swift/SIL/SILMoveOnlyDeinit.h"
#include "swift/SIL/SILPrintContext.h"
#include "swift/SIL/SILVTable.h"
#include "swift/SIL/SILVisitor.h"
#include "swift/SIL/TerminatorUtils.h"
#include "swift/Strings.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Decl.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/PostOrderIterator.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/FormattedStream.h"
#include <set>
using namespace swift;
using ID = SILPrintContext::ID;
llvm::cl::opt<bool>
SILPrintNoColor("sil-print-no-color", llvm::cl::init(""),
llvm::cl::desc("Don't use color when printing SIL"));
llvm::cl::opt<bool>
SILFullDemangle("sil-full-demangle", llvm::cl::init(false),
llvm::cl::desc("Fully demangle symbol names in SIL output"));
llvm::cl::opt<bool>
SILPrintDebugInfo("sil-print-debuginfo", llvm::cl::init(false),
llvm::cl::desc("Include debug info in SIL output"));
llvm::cl::opt<bool>
SILPrintDebugInfoVerbose("sil-print-debuginfo-verbose",
llvm::cl::init(false),
llvm::cl::desc("Print verbose debug info output"));
llvm::cl::opt<bool>
SILPrintSourceInfo("sil-print-sourceinfo", llvm::cl::init(false),
llvm::cl::desc("Include source annotation in SIL output"));
llvm::cl::opt<bool>
SILPrintTypes("sil-print-types", llvm::cl::init(false),
llvm::cl::desc("always print type annotations for instruction operands in SIL output"));
llvm::cl::opt<bool>
SILPrintNoUses("sil-print-no-uses", llvm::cl::init(false),
llvm::cl::desc("omit use comments in SIL output"));
llvm::cl::opt<bool> SILPrintGenericSpecializationInfo(
"sil-print-generic-specialization-info", llvm::cl::init(false),
llvm::cl::desc("Include generic specialization"
"information info in SIL output"));
static std::string demangleSymbol(StringRef Name) {
if (SILFullDemangle)
return Demangle::demangleSymbolAsString(Name);
return Demangle::demangleSymbolAsString(Name,
Demangle::DemangleOptions::SimplifiedUIDemangleOptions());
}
enum SILColorKind {
SC_Type,
};
namespace {
/// RAII based coloring of SIL output.
class SILColor {
raw_ostream &OS;
enum raw_ostream::Colors Color;
public:
#define DEF_COL(NAME, RAW) case NAME: Color = raw_ostream::RAW; break;
explicit SILColor(raw_ostream &OS, SILColorKind K) : OS(OS) {
if (!OS.has_colors() || SILPrintNoColor)
return;
switch (K) {
DEF_COL(SC_Type, YELLOW)
}
OS.resetColor();
OS.changeColor(Color);
}
explicit SILColor(raw_ostream &OS, ID::ID_Kind K) : OS(OS) {
if (!OS.has_colors() || SILPrintNoColor)
return;
switch (K) {
DEF_COL(ID::SILUndef, RED)
DEF_COL(ID::SILBasicBlock, GREEN)
DEF_COL(ID::SSAValue, MAGENTA)
DEF_COL(ID::Null, YELLOW)
}
OS.resetColor();
OS.changeColor(Color);
}
~SILColor() {
if (!OS.has_colors() || SILPrintNoColor)
return;
// FIXME: instead of resetColor(), we can look into
// capturing the current active color and restoring it.
OS.resetColor();
}
#undef DEF_COL
};
} // end anonymous namespace
void SILPrintContext::ID::print(raw_ostream &OS) {
SILColor C(OS, Kind);
switch (Kind) {
case ID::SILUndef:
OS << "undef";
return;
case ID::SILBasicBlock: OS << "bb"; break;
case ID::SSAValue: OS << '%'; break;
case ID::Null: OS << "<<NULL OPERAND>>"; return;
}
OS << Number;
}
namespace swift {
raw_ostream &operator<<(raw_ostream &OS, SILPrintContext::ID i) {
i.print(OS);
return OS;
}
} // namespace swift
/// IDAndType - Used when a client wants to print something like "%0 : $Int".
struct SILValuePrinterInfo {
ID ValueID;
SILType Type;
std::optional<ValueOwnershipKind> OwnershipKind;
bool IsNoImplicitCopy = false;
LifetimeAnnotation Lifetime = LifetimeAnnotation::None;
bool IsCapture = false;
bool IsReborrow = false;
bool IsEscaping = false;
bool needPrintType = false;
SILValuePrinterInfo(ID ValueID) : ValueID(ValueID), Type(), OwnershipKind() {}
SILValuePrinterInfo(ID ValueID, SILType Type, bool needPrintType)
: ValueID(ValueID), Type(Type), OwnershipKind(), needPrintType(needPrintType) {}
SILValuePrinterInfo(ID ValueID, SILType Type,
ValueOwnershipKind OwnershipKind)
: ValueID(ValueID), Type(Type), OwnershipKind(OwnershipKind) {}
SILValuePrinterInfo(ID ValueID, SILType Type,
ValueOwnershipKind OwnershipKind, bool IsNoImplicitCopy,
LifetimeAnnotation Lifetime, bool IsCapture,
bool IsReborrow, bool IsEscaping, bool needPrintType)
: ValueID(ValueID), Type(Type), OwnershipKind(OwnershipKind),
IsNoImplicitCopy(IsNoImplicitCopy), Lifetime(Lifetime),
IsCapture(IsCapture), IsReborrow(IsReborrow), IsEscaping(IsEscaping),
needPrintType(needPrintType){}
SILValuePrinterInfo(ID ValueID, SILType Type, bool IsNoImplicitCopy,
LifetimeAnnotation Lifetime, bool IsCapture,
bool IsReborrow, bool IsEscaping, bool needPrintType)
: ValueID(ValueID), Type(Type), OwnershipKind(),
IsNoImplicitCopy(IsNoImplicitCopy), Lifetime(Lifetime),
IsCapture(IsCapture), IsReborrow(IsReborrow), IsEscaping(IsEscaping),
needPrintType(needPrintType) {}
SILValuePrinterInfo(ID ValueID, SILType Type,
ValueOwnershipKind OwnershipKind, bool IsReborrow,
bool IsEscaping, bool needPrintType)
: ValueID(ValueID), Type(Type), OwnershipKind(OwnershipKind),
IsReborrow(IsReborrow), IsEscaping(IsEscaping), needPrintType(needPrintType) {}
};
/// Return the fully qualified dotted path for DeclContext.
static void printFullContext(const DeclContext *Context, raw_ostream &Buffer) {
if (!Context)
return;
switch (Context->getContextKind()) {
case swift::DeclContextKind::Package:
return;
case DeclContextKind::Module:
if (Context == cast<ModuleDecl>(Context)->getASTContext().TheBuiltinModule)
Buffer << cast<ModuleDecl>(Context)->getName() << ".";
return;
case DeclContextKind::FileUnit:
// Ignore the file; just print the module.
printFullContext(Context->getParent(), Buffer);
return;
case DeclContextKind::MacroDecl:
// Ignore the macro, which won't have anything in it; just print the module.
printFullContext(Context->getParent(), Buffer);
return;
case DeclContextKind::Initializer:
// FIXME
Buffer << "<initializer>";
return;
case DeclContextKind::AbstractClosureExpr:
case DeclContextKind::SerializedAbstractClosure:
// FIXME
Buffer << "<anonymous function>";
return;
case DeclContextKind::GenericTypeDecl: {
auto *generic = cast<GenericTypeDecl>(Context);
printFullContext(generic->getDeclContext(), Buffer);
Buffer << generic->getName() << ".";
return;
}
case DeclContextKind::ExtensionDecl: {
const NominalTypeDecl *ExtNominal =
cast<ExtensionDecl>(Context)->getExtendedNominal();
printFullContext(ExtNominal->getDeclContext(), Buffer);
Buffer << ExtNominal->getName() << ".";
return;
}
case DeclContextKind::TopLevelCodeDecl:
case DeclContextKind::SerializedTopLevelCodeDecl:
// FIXME
Buffer << "<top level code>";
return;
case DeclContextKind::AbstractFunctionDecl:
// FIXME
Buffer << "<abstract function>";
return;
case DeclContextKind::SubscriptDecl:
// FIXME
Buffer << "<subscript>";
return;
case DeclContextKind::EnumElementDecl:
// FIXME
Buffer << "<enum element>";
return;
}
llvm_unreachable("bad decl context");
}
static void printValueDecl(ValueDecl *Decl, raw_ostream &OS) {
printFullContext(Decl->getDeclContext(), OS);
if (!Decl->hasName()) {
OS << "anonname=" << (const void*)Decl;
} else if (Decl->isOperator()) {
OS << '"' << Decl->getBaseName() << '"';
} else {
bool isKeyword =
llvm::StringSwitch<bool>(Decl->getBaseName().userFacingName())
// FIXME: Represent "init" by a special name and remove this case
.Case("init", false)
#define KEYWORD(kw) \
.Case(#kw, true)
#include "swift/AST/TokenKinds.def"
.Default(false);
bool shouldEscapeIdentifier =
!Decl->getBaseName().isSpecial() &&
(isKeyword || Decl->getBaseName().mustAlwaysBeEscaped());
if (shouldEscapeIdentifier) {
OS << '`';
}
OS << Decl->getBaseName().userFacingName();
if (shouldEscapeIdentifier) {
OS << '`';
}
}
}
/// SILDeclRef uses sigil "#" and prints the fully qualified dotted path.
void SILDeclRef::print(raw_ostream &OS) const {
OS << "#";
if (isNull()) {
OS << "<null>";
return;
}
bool isDot = true;
switch (getLocKind()) {
case LocKind::Closure:
OS << "<anonymous function>";
break;
case LocKind::File:
OS << "<file>";
break;
case LocKind::Decl: {
if (kind != Kind::Func) {
printValueDecl(getDecl(), OS);
break;
}
auto *accessor = dyn_cast<AccessorDecl>(getDecl());
if (!accessor) {
printValueDecl(getDecl(), OS);
isDot = false;
break;
}
printValueDecl(accessor->getStorage(), OS);
switch (accessor->getAccessorKind()) {
case AccessorKind::WillSet:
OS << "!willSet";
break;
case AccessorKind::DidSet:
OS << "!didSet";
break;
case AccessorKind::Get:
OS << "!getter";
break;
case AccessorKind::DistributedGet:
OS << "!_distributed_getter";
break;
case AccessorKind::Set:
OS << "!setter";
break;
case AccessorKind::Address:
OS << "!addressor";
break;
case AccessorKind::MutableAddress:
OS << "!mutableAddressor";
break;
case AccessorKind::Read:
OS << "!read";
break;
case AccessorKind::Modify:
OS << "!modify";
break;
case AccessorKind::Init:
OS << "!init";
break;
case AccessorKind::Read2:
OS << "!read2";
break;
case AccessorKind::Modify2:
OS << "!modify2";
break;
}
break;
}
}
switch (kind) {
case SILDeclRef::Kind::Func:
case SILDeclRef::Kind::EntryPoint:
case SILDeclRef::Kind::AsyncEntryPoint:
break;
case SILDeclRef::Kind::Allocator:
OS << "!allocator";
break;
case SILDeclRef::Kind::Initializer:
OS << "!initializer";
break;
case SILDeclRef::Kind::EnumElement:
OS << "!enumelt";
break;
case SILDeclRef::Kind::Destroyer:
OS << "!destroyer";
break;
case SILDeclRef::Kind::Deallocator:
OS << "!deallocator";
break;
case SILDeclRef::Kind::IsolatedDeallocator:
OS << "!isolateddeallocator";
break;
case SILDeclRef::Kind::IVarInitializer:
OS << "!ivarinitializer";
break;
case SILDeclRef::Kind::IVarDestroyer:
OS << "!ivardestroyer";
break;
case SILDeclRef::Kind::GlobalAccessor:
OS << "!globalaccessor";
break;
case SILDeclRef::Kind::DefaultArgGenerator:
OS << "!defaultarg" << "." << defaultArgIndex;
break;
case SILDeclRef::Kind::StoredPropertyInitializer:
OS << "!propertyinit";
break;
case SILDeclRef::Kind::PropertyWrapperBackingInitializer:
OS << "!backinginit";
break;
case SILDeclRef::Kind::PropertyWrapperInitFromProjectedValue:
OS << "!projectedvalueinit";
break;
}
if (isForeign)
OS << (isDot ? '.' : '!') << "foreign";
if (getDerivativeFunctionIdentifier()) {
OS << ((isDot || isForeign) ? '.' : '!');
switch (getDerivativeFunctionIdentifier()->getKind()) {
case AutoDiffDerivativeFunctionKind::JVP:
OS << "jvp.";
break;
case AutoDiffDerivativeFunctionKind::VJP:
OS << "vjp.";
break;
}
OS << getDerivativeFunctionIdentifier()->getParameterIndices()->getString();
if (auto derivativeGenSig =
getDerivativeFunctionIdentifier()->getDerivativeGenericSignature()) {
OS << "." << derivativeGenSig;
}
}
}
void SILDeclRef::dump() const {
print(llvm::errs());
llvm::errs() << '\n';
}
/// Pretty-print the generic specialization information.
static void printGenericSpecializationInfo(
raw_ostream &OS, StringRef Kind, StringRef Name,
const GenericSpecializationInformation *SpecializationInfo,
SubstitutionMap Subs = { }) {
if (!SpecializationInfo && Subs.empty())
return;
auto PrintSubstitutions = [&](SubstitutionMap Subs) {
OS << '<';
interleave(Subs.getReplacementTypes(),
[&](Type type) { OS << type; },
[&] { OS << ", "; });
OS << '>';
OS << " conformances <";
interleave(Subs.getConformances(),
[&](ProtocolConformanceRef conf) { conf.print(OS); },
[&] { OS << ", ";});
OS << '>';
};
OS << "// Generic specialization information for " << Kind << " " << Name;
if (!Subs.empty()) {
OS << " ";
PrintSubstitutions(Subs);
}
OS << ":\n";
while (SpecializationInfo) {
OS << "// Caller: " << SpecializationInfo->getCaller()->getName() << '\n';
OS << "// Parent: " << SpecializationInfo->getParent()->getName() << '\n';
OS << "// Substitutions: ";
PrintSubstitutions(SpecializationInfo->getSubstitutions());
OS << '\n';
OS << "//\n";
if (!SpecializationInfo->getCaller()->isSpecialization())
return;
SpecializationInfo =
SpecializationInfo->getCaller()->getSpecializationInfo();
}
}
static void print(raw_ostream &OS, SILValueCategory category) {
switch (category) {
case SILValueCategory::Object: return;
case SILValueCategory::Address: OS << '*'; return;
}
llvm_unreachable("bad value category!");
}
static StringRef getCastConsumptionKindName(CastConsumptionKind kind) {
switch (kind) {
case CastConsumptionKind::TakeAlways: return "take_always";
case CastConsumptionKind::TakeOnSuccess: return "take_on_success";
case CastConsumptionKind::CopyOnSuccess: return "copy_on_success";
case CastConsumptionKind::BorrowAlways: return "borrow_always";
}
llvm_unreachable("bad cast consumption kind");
}
static void printSILTypeColorAndSigil(raw_ostream &OS, SILType t) {
SILColor C(OS, SC_Type);
OS << '$';
// Potentially add a leading sigil for the value category.
::print(OS, t.getCategory());
}
void SILType::print(raw_ostream &OS, const PrintOptions &PO) const {
printSILTypeColorAndSigil(OS, *this);
// Print other types as their Swift representation.
//
// NOTE: We always print the Raw AST type so we don't look through
// move-onlyness.
getRawASTType().print(OS, PO);
}
void SILType::dump() const {
print(llvm::errs());
llvm::errs() << '\n';
}
/// Prints the name and type of the given SIL function with the given
/// `PrintOptions`. Computes mapping for sugared type names and stores the
/// result in `sugaredTypeNames`.
static void printSILFunctionNameAndType(
llvm::raw_ostream &OS, const SILFunction *function,
llvm::DenseMap<CanType, Identifier> &sugaredTypeNames,
const SILPrintContext *silPrintContext = nullptr) {
function->printName(OS);
OS << " : $";
auto *genEnv = function->getGenericEnvironment();
GenericSignature genSig;
// If `genEnv` is defined, get sugared names of generic
// parameter types for printing.
if (genEnv) {
genSig = genEnv->getGenericSignature();
llvm::DenseSet<Identifier> usedNames;
llvm::SmallString<16> disambiguatedNameBuf;
unsigned disambiguatedNameCounter = 1;
for (auto *paramTy : genSig.getGenericParams()) {
// Get a uniqued sugared name for the generic parameter type.
auto sugaredTy = genEnv->getGenericSignature()->getSugaredType(paramTy);
// Opaque parameter types are printed as their canonical types and not
// the unparseable "<anonymous>".
if (sugaredTy->getOpaqueDecl())
continue;
Identifier name = sugaredTy->getName();
while (!usedNames.insert(name).second) {
disambiguatedNameBuf.clear();
{
llvm::raw_svector_ostream names(disambiguatedNameBuf);
names << sugaredTy->getName() << disambiguatedNameCounter++;
}
name = function->getASTContext().getIdentifier(disambiguatedNameBuf);
}
// If the uniqued sugared name is equal to the sugared name, continue.
if (name == sugaredTy->getName())
continue;
// Otherwise, add sugared name mapping for the type (and its archetype, if
// defined).
sugaredTypeNames[paramTy->getCanonicalType()] = name;
if (auto *archetypeTy =
genEnv->mapTypeIntoContext(paramTy)->getAs<ArchetypeType>())
sugaredTypeNames[archetypeTy->getCanonicalType()] = name;
}
}
auto printOptions = PrintOptions::printSIL(silPrintContext);
printOptions.GenericSig = genSig.getPointer();
printOptions.AlternativeTypeNames =
sugaredTypeNames.empty() ? nullptr : &sugaredTypeNames;
function->getLoweredFunctionType()->print(OS, printOptions);
}
/// Prints the name and type of the given SIL function.
static void printSILFunctionNameAndType(llvm::raw_ostream &OS,
const SILFunction *function) {
llvm::DenseMap<CanType, Identifier> sugaredTypeNames;
printSILFunctionNameAndType(OS, function, sugaredTypeNames);
}
namespace {
// 1. Accumulate opcode-specific comments in this stream.
// 2. Start emitting comments: lineComments.start()
// 3. Emit each comment section: lineComments.delim()
// 4. End emitting comments: LineComments::end()
class LineComments : public raw_ostream {
llvm::formatted_raw_ostream &os;
// Opcode-specific comments to be printed at the end of the current line.
std::string opcodeCommentString;
llvm::raw_string_ostream opcodeCommentStream;
bool emitting = false;
bool printedSlashes = false;
public:
LineComments(llvm::formatted_raw_ostream &os)
: os(os), opcodeCommentStream(opcodeCommentString) {
SetUnbuffered(); // pass through to the underlying stream
}
// Call to start emitting line comments into the underlying stream.
void start() {
emitting = true;
printedSlashes = false;
if (opcodeCommentString.empty())
return;
delim();
os << opcodeCommentString;
opcodeCommentString.clear();
}
// Call for each section of line
void delim() {
assert(emitting);
if (printedSlashes) {
os << "; ";
} else {
os.PadToColumn(50);
os << "// ";
printedSlashes = true;
}
}
void end() {
assert(emitting);
emitting = false;
printedSlashes = false;
os << "\n";
}
protected:
void write_impl(const char *ptr, size_t size) override {
if (emitting)
os.write(ptr, size);
else
opcodeCommentStream.write(ptr, size);
}
uint64_t current_pos() const override {
if (emitting)
return os.tell() - os.GetNumBytesInBuffer();
return opcodeCommentString.size();
}
};
} // namespace
namespace swift {
/// SILPrinter class - This holds the internal implementation details of
/// printing SIL structures.
class SILPrinter : public SILInstructionVisitor<SILPrinter> {
SILPrintContext &Ctx;
struct {
llvm::formatted_raw_ostream OS;
PrintOptions ASTOptions;
} PrintState;
LineComments lineComments;
unsigned LastBufferID;
llvm::DenseSet<const SILBasicBlock *> printedBlocks;
// Printers for the underlying stream.
#define SIMPLE_PRINTER(TYPE) \
SILPrinter &operator<<(TYPE value) { \
PrintState.OS << value; \
return *this; \
}
SIMPLE_PRINTER(char)
SIMPLE_PRINTER(unsigned)
SIMPLE_PRINTER(uint64_t)
SIMPLE_PRINTER(int64_t)
SIMPLE_PRINTER(StringRef)
SIMPLE_PRINTER(Identifier)
SIMPLE_PRINTER(ID)
SIMPLE_PRINTER(QuotedString)
SIMPLE_PRINTER(SILDeclRef)
SIMPLE_PRINTER(APInt)
SIMPLE_PRINTER(ValueOwnershipKind)
SIMPLE_PRINTER(UUID)
SIMPLE_PRINTER(GenericSignature)
SIMPLE_PRINTER(ActorIsolation)
#undef SIMPLE_PRINTER
SILPrinter &operator<<(SILValuePrinterInfo i) {
SILColor C(PrintState.OS, SC_Type);
*this << i.ValueID;
if (!i.Type)
return *this;
const char *separator = " : ";
if (i.IsNoImplicitCopy) {
*this << separator << "@noImplicitCopy";
separator = " ";
}
switch (i.Lifetime) {
case LifetimeAnnotation::EagerMove:
*this << separator << "@_eagerMove";
separator = " ";
break;
case LifetimeAnnotation::None:
break;
case LifetimeAnnotation::Lexical:
*this << separator << "@_lexical";
separator = " ";
break;
}
if (i.IsCapture) {
*this << separator << "@closureCapture";
separator = " ";
}
if (i.IsReborrow) {
*this << separator << "@reborrow";
separator = " ";
}
if (i.IsEscaping) {
*this << separator << "@pointer_escape";
separator = " ";
}
if (!i.IsReborrow && i.OwnershipKind && *i.OwnershipKind != OwnershipKind::None) {
*this << separator << "@" << i.OwnershipKind.value();
separator = " ";
}
if (i.needPrintType) {
*this << separator << i.Type;
}
return *this;
}
bool needPrintTypeFor(SILValue V) {
if (SILPrintTypes)
return true;
if (!V)
return false;
if (isa<SILUndef>(V))
return true;
// Make sure to print the type if the operand's definition was not printed so far
return printedBlocks.count(V->getParentBlock()) == 0;
}
SILPrinter &operator<<(Type t) {
// Print the type using our print options.
t.print(PrintState.OS, PrintState.ASTOptions);
return *this;
}
SILPrinter &operator<<(SILType t) {
printSILTypeColorAndSigil(PrintState.OS, t);
t.getRawASTType().print(PrintState.OS, PrintState.ASTOptions);
return *this;
}
public:
SILPrinter(
SILPrintContext &PrintCtx,
llvm::DenseMap<CanType, Identifier> *AlternativeTypeNames = nullptr)
: Ctx(PrintCtx), PrintState{{PrintCtx.OS()},
PrintOptions::printSIL(&PrintCtx)},
lineComments(PrintState.OS), LastBufferID(0) {
PrintState.ASTOptions.AlternativeTypeNames = AlternativeTypeNames;
PrintState.ASTOptions.PrintForSIL = true;
}
SILValuePrinterInfo getIDAndType(SILValue V) {
return {Ctx.getID(V), V ? V->getType() : SILType(), needPrintTypeFor(V)};
}
SILValuePrinterInfo getIDAndForcedPrintedType(SILValue V) {
return {Ctx.getID(V), V ? V->getType() : SILType(), /*needPrintType=*/true};
}
SILValuePrinterInfo getIDAndType(SILFunctionArgument *arg) {
return {Ctx.getID(arg), arg->getType(),
arg->isNoImplicitCopy(), arg->getLifetimeAnnotation(),
arg->isClosureCapture(), arg->isReborrow(),
arg->hasPointerEscape(), /*needPrintType=*/true};
}
SILValuePrinterInfo getIDAndType(SILArgument *arg) {
return {Ctx.getID(arg), arg->getType(), /*needPrintType=*/true};
}
SILValuePrinterInfo getIDAndTypeAndOwnership(SILValue V) {
return {Ctx.getID(V), V ? V->getType() : SILType(), V->getOwnershipKind()};
}
SILValuePrinterInfo getIDAndTypeAndOwnership(SILFunctionArgument *arg) {
return {Ctx.getID(arg),
arg->getType(),
arg->getOwnershipKind(),
arg->isNoImplicitCopy(),
arg->getLifetimeAnnotation(),
arg->isClosureCapture(),
arg->isReborrow(),
arg->hasPointerEscape(),
/*needPrintType=*/true};
}
SILValuePrinterInfo getIDAndTypeAndOwnership(SILArgument *arg) {
return {Ctx.getID(arg), arg->getType(), arg->getOwnershipKind(),
arg->isReborrow(), arg->hasPointerEscape(),
/*needPrintType=*/true};
}
void markBlockAsPrinted(const SILBasicBlock *block) {
printedBlocks.insert(block);
}
//===--------------------------------------------------------------------===//
// Big entrypoints.
void print(const SILFunction *F) {
// If we are asked to emit sorted SIL, print out our BBs in RPOT order.
if (Ctx.sortSIL()) {
std::vector<SILBasicBlock *> RPOT;
auto *UnsafeF = const_cast<SILFunction *>(F);
std::copy(po_begin(UnsafeF), po_end(UnsafeF),
std::back_inserter(RPOT));
std::reverse(RPOT.begin(), RPOT.end());
Ctx.initBlockIDs(RPOT);
interleave(RPOT,
[&](SILBasicBlock *B) { print(B); },
[&] { *this << '\n'; });
return;
}
interleave(*F,
[&](const SILBasicBlock &B) { print(&B); },
[&] { *this << '\n'; });
}
void printBlockArgumentUses(const SILBasicBlock *BB) {
if (SILPrintNoUses)
return;
if (BB->args_empty())
return;
for (SILArgument *arg : BB->getArguments()) {
StringRef name;
if (arg->getDecl() && arg->getDecl()->hasName())
name = arg->getDecl()->getBaseName().userFacingName();
if (arg->use_empty() && name.empty())
continue;
*this << "// " << Ctx.getID(arg);
if (!name.empty()) {
*this << " \"" << name << '\"';
}
if (!arg->use_empty()) {
PrintState.OS.PadToColumn(50);
*this << "// user";
if (std::next(arg->use_begin()) != arg->use_end())
*this << 's';
*this << ": ";
llvm::SmallVector<ID, 32> UserIDs;
for (auto *Op : arg->getUses())
UserIDs.push_back(Ctx.getID(Op->getUser()));
// Display the user ids sorted to give a stable use order in the
// printer's output if we are asked to do so. This makes diffing large
// sections of SIL significantly easier at the expense of not showing
// the _TRUE_ order of the users in the use list.
if (Ctx.sortSIL()) {
std::sort(UserIDs.begin(), UserIDs.end());
}
llvm::interleave(
UserIDs.begin(), UserIDs.end(), [&](ID id) { *this << id; },
[&] { *this << ", "; });
}
*this << '\n';
}
}
void printBlockArguments(const SILBasicBlock *BB) {
if (BB->args_empty())
return;
*this << '(';
// If SIL ownership is enabled and the given function has not had ownership
// stripped out, print out ownership of SILArguments.
if (BB->getParent()->hasOwnership()) {
if (BB->isEntry()) {
auto Args = BB->getSILFunctionArguments();
*this << getIDAndTypeAndOwnership(Args[0]);
for (unsigned i : range(1, Args.size())) {
SILFunctionArgument *Arg = Args[i];
*this << ", " << getIDAndTypeAndOwnership(Arg);
}
*this << ')';
} else {
ArrayRef<SILArgument *> Args = BB->getArguments();
*this << getIDAndTypeAndOwnership(Args[0]);
for (SILArgument *Arg : Args.drop_front()) {
*this << ", " << getIDAndTypeAndOwnership(Arg);
}
*this << ')';
}
return;
}
if (BB->isEntry()) {
auto Args = BB->getSILFunctionArguments();
*this << getIDAndType(Args[0]);
for (unsigned i : range(1, Args.size())) {
SILFunctionArgument *Arg = Args[i];
*this << ", " << getIDAndType(Arg);
}
*this << ')';
return;
}
ArrayRef<SILArgument *> Args = BB->getArguments();
*this << getIDAndType(Args[0]);
for (SILArgument *Arg : Args.drop_front()) {
*this << ", " << getIDAndType(Arg);
}
*this << ')';
}
#ifndef NDEBUG
void printID(const SILBasicBlock *BB, bool newline) {
*this << Ctx.getID(BB);
if (newline) {
*this << "\n";
}
}
#endif
void print(const SILBasicBlock *BB) {
markBlockAsPrinted(BB);
// Output uses for BB arguments. These are put into place as comments before
// the block header.
printBlockArgumentUses(BB);
// If the basic block has a name available, print it as well
auto debugName = BB->getDebugName();
if (debugName.has_value()) {
*this << "// " << debugName.value() << '\n';
}
// Then print the name of our block, the arguments, and the block colon.
*this << Ctx.getID(BB);
printBlockArguments(BB);
*this << ":";
if (!BB->pred_empty() && !SILPrintNoUses) {
PrintState.OS.PadToColumn(50);
*this << "// Preds:";
llvm::SmallVector<ID, 32> PredIDs;
for (auto *BBI : BB->getPredecessorBlocks())
PredIDs.push_back(Ctx.getID(BBI));
// Display the pred ids sorted to give a stable use order in the printer's
// output if we are asked to do so. This makes diffing large sections of
// SIL significantly easier at the expense of not showing the _TRUE_ order
// of the users in the use list.
if (Ctx.sortSIL()) {
std::sort(PredIDs.begin(), PredIDs.end());
}
for (auto Id : PredIDs)
*this << ' ' << Id;
}
*this << '\n';
const auto &SM = BB->getModule().getASTContext().SourceMgr;
std::optional<SILLocation> PrevLoc;
for (const SILInstruction &I : *BB) {
if (SILPrintSourceInfo) {
auto CurSourceLoc = I.getLoc().getSourceLoc();
if (CurSourceLoc.isValid()) {
if (!PrevLoc ||
SM.getLineAndColumnInBuffer(CurSourceLoc).first >
SM.getLineAndColumnInBuffer(PrevLoc->getSourceLoc()).first) {
auto Buffer = SM.findBufferContainingLoc(CurSourceLoc);
auto Line = SM.getLineAndColumnInBuffer(CurSourceLoc).first;
auto LineLength = SM.getLineLength(Buffer, Line);
PrintState.OS << " // "