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SILInstructions.cpp
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//===--- SILInstructions.cpp - Instructions for 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
//
//===----------------------------------------------------------------------===//
//
// This file defines the high-level SILInstruction classes used for SIL code.
//
//===----------------------------------------------------------------------===//
#include "swift/SIL/SILInstruction.h"
#include "swift/AST/Expr.h"
#include "swift/AST/ProtocolConformance.h"
#include "swift/Basic/type_traits.h"
#include "swift/Basic/Unicode.h"
#include "swift/Basic/AssertImplements.h"
#include "swift/SIL/FormalLinkage.h"
#include "swift/SIL/SILBuilder.h"
#include "swift/SIL/SILCloner.h"
#include "swift/SIL/SILModule.h"
#include "swift/SIL/SILVisitor.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/ErrorHandling.h"
using namespace swift;
using namespace Lowering;
// Collect used open archetypes from a given type into the \p openedArchetypes.
// \p openedArchetypes is being used as a set. We don't use a real set type here
// for performance reasons.
static void
collectDependentTypeInfo(CanType Ty,
SmallVectorImpl<CanArchetypeType> &openedArchetypes,
bool &hasDynamicSelf) {
if (!Ty)
return;
if (Ty->hasDynamicSelfType())
hasDynamicSelf = true;
if (!Ty->hasOpenedExistential())
return;
Ty.visit([&](CanType t) {
if (t->isOpenedExistential()) {
// Add this opened archetype if it was not seen yet.
// We don't use a set here, because the number of open archetypes
// is usually very small and using a real set may introduce too
// much overhead.
auto archetypeTy = cast<ArchetypeType>(t);
if (std::find(openedArchetypes.begin(), openedArchetypes.end(),
archetypeTy) == openedArchetypes.end())
openedArchetypes.push_back(archetypeTy);
}
});
}
// Takes a set of open archetypes as input and produces a set of
// references to open archetype definitions.
static void buildTypeDependentOperands(
SmallVectorImpl<CanArchetypeType> &OpenedArchetypes,
bool hasDynamicSelf,
SmallVectorImpl<SILValue> &TypeDependentOperands,
SILOpenedArchetypesState &OpenedArchetypesState, SILFunction &F) {
for (auto archetype : OpenedArchetypes) {
auto Def = OpenedArchetypesState.getOpenedArchetypeDef(archetype);
assert(Def);
assert(getOpenedArchetypeOf(Def->getType().getSwiftRValueType()) &&
"Opened archetype operands should be of an opened existential type");
TypeDependentOperands.push_back(Def);
}
if (hasDynamicSelf)
TypeDependentOperands.push_back(F.getSelfMetadataArgument());
}
// Collects all opened archetypes from a type and a substitutions list and form
// a corresponding list of opened archetype operands.
// We need to know the number of opened archetypes to estimate
// the number of opened archetype operands for the instruction
// being formed, because we need to reserve enough memory
// for these operands.
static void collectTypeDependentOperands(
SmallVectorImpl<SILValue> &TypeDependentOperands,
SILOpenedArchetypesState &OpenedArchetypesState,
SILFunction &F,
CanType Ty,
SubstitutionList subs = SubstitutionList()) {
SmallVector<CanArchetypeType, 4> openedArchetypes;
bool hasDynamicSelf = false;
collectDependentTypeInfo(Ty, openedArchetypes, hasDynamicSelf);
for (auto sub : subs) {
// Substitutions in SIL should really be canonical.
auto ReplTy = sub.getReplacement()->getCanonicalType();
collectDependentTypeInfo(ReplTy, openedArchetypes, hasDynamicSelf);
}
buildTypeDependentOperands(openedArchetypes, hasDynamicSelf,
TypeDependentOperands,
OpenedArchetypesState, F);
}
//===----------------------------------------------------------------------===//
// SILInstruction Subclasses
//===----------------------------------------------------------------------===//
template <typename INST>
static void *allocateDebugVarCarryingInst(SILModule &M, SILDebugVariable Var,
ArrayRef<SILValue> Operands = {}) {
return M.allocateInst(sizeof(INST) + Var.Name.size() +
sizeof(Operand) * Operands.size(),
alignof(INST));
}
TailAllocatedDebugVariable::TailAllocatedDebugVariable(SILDebugVariable Var,
char *buf)
: ArgNo(Var.ArgNo), NameLength(Var.Name.size()), Constant(Var.Constant) {
assert((Var.ArgNo < (2<<16)) && "too many arguments");
assert((NameLength < (2<<15)) && "variable name too long");
memcpy(buf, Var.Name.data(), NameLength);
}
StringRef TailAllocatedDebugVariable::getName(const char *buf) const {
return NameLength ? StringRef(buf, NameLength) : StringRef();
}
AllocStackInst::AllocStackInst(SILDebugLocation Loc, SILType elementType,
ArrayRef<SILValue> TypeDependentOperands,
SILFunction &F,
SILDebugVariable Var)
: AllocationInst(ValueKind::AllocStackInst, Loc,
elementType.getAddressType()),
NumOperands(TypeDependentOperands.size()),
VarInfo(Var, getTrailingObjects<char>()) {
TrailingOperandsList::InitOperandsList(getAllOperands().begin(), this,
TypeDependentOperands);
}
AllocStackInst *
AllocStackInst::create(SILDebugLocation Loc,
SILType elementType, SILFunction &F,
SILOpenedArchetypesState &OpenedArchetypes,
SILDebugVariable Var) {
SmallVector<SILValue, 8> TypeDependentOperands;
collectTypeDependentOperands(TypeDependentOperands, OpenedArchetypes, F,
elementType.getSwiftRValueType());
void *Buffer = allocateDebugVarCarryingInst<AllocStackInst>(
F.getModule(), Var, TypeDependentOperands);
return ::new (Buffer)
AllocStackInst(Loc, elementType, TypeDependentOperands, F, Var);
}
/// getDecl - Return the underlying variable declaration associated with this
/// allocation, or null if this is a temporary allocation.
VarDecl *AllocStackInst::getDecl() const {
return getLoc().getAsASTNode<VarDecl>();
}
AllocRefInstBase::AllocRefInstBase(ValueKind Kind,
SILDebugLocation Loc,
SILType ObjectType,
bool objc, bool canBeOnStack,
ArrayRef<SILType> ElementTypes,
ArrayRef<SILValue> AllOperands)
: AllocationInst(Kind, Loc, ObjectType),
StackPromotable(canBeOnStack),
NumTailTypes(ElementTypes.size()),
ObjC(objc),
Operands(this, AllOperands) {
static_assert(IsTriviallyCopyable<SILType>::value,
"assuming SILType is trivially copyable");
assert(!objc || ElementTypes.size() == 0);
assert(AllOperands.size() >= ElementTypes.size());
memcpy(getTypeStorage(), ElementTypes.begin(),
sizeof(SILType) * ElementTypes.size());
}
AllocRefInst *AllocRefInst::create(SILDebugLocation Loc, SILFunction &F,
SILType ObjectType,
bool objc, bool canBeOnStack,
ArrayRef<SILType> ElementTypes,
ArrayRef<SILValue> ElementCountOperands,
SILOpenedArchetypesState &OpenedArchetypes) {
assert(ElementTypes.size() == ElementCountOperands.size());
assert(!objc || ElementTypes.size() == 0);
SmallVector<SILValue, 8> AllOperands(ElementCountOperands.begin(),
ElementCountOperands.end());
for (SILType ElemType : ElementTypes) {
collectTypeDependentOperands(AllOperands, OpenedArchetypes, F,
ElemType.getSwiftRValueType());
}
void *Buffer = F.getModule().allocateInst(
sizeof(AllocRefInst)
+ decltype(Operands)::getExtraSize(AllOperands.size())
+ sizeof(SILType) * ElementTypes.size(),
alignof(AllocRefInst));
return ::new (Buffer) AllocRefInst(Loc, F, ObjectType, objc, canBeOnStack,
ElementTypes, AllOperands);
}
AllocRefDynamicInst *
AllocRefDynamicInst::create(SILDebugLocation DebugLoc, SILFunction &F,
SILValue metatypeOperand, SILType ty, bool objc,
ArrayRef<SILType> ElementTypes,
ArrayRef<SILValue> ElementCountOperands,
SILOpenedArchetypesState &OpenedArchetypes) {
SmallVector<SILValue, 8> AllOperands(ElementCountOperands.begin(),
ElementCountOperands.end());
AllOperands.push_back(metatypeOperand);
collectTypeDependentOperands(AllOperands, OpenedArchetypes, F,
ty.getSwiftRValueType());
for (SILType ElemType : ElementTypes) {
collectTypeDependentOperands(AllOperands, OpenedArchetypes, F,
ElemType.getSwiftRValueType());
}
void *Buffer = F.getModule().allocateInst(
sizeof(AllocRefDynamicInst)
+ decltype(Operands)::getExtraSize(AllOperands.size())
+ sizeof(SILType) * ElementTypes.size(),
alignof(AllocRefDynamicInst));
return ::new (Buffer)
AllocRefDynamicInst(DebugLoc, ty, objc, ElementTypes, AllOperands);
}
AllocBoxInst::AllocBoxInst(SILDebugLocation Loc, CanSILBoxType BoxType,
ArrayRef<SILValue> TypeDependentOperands,
SILFunction &F, SILDebugVariable Var)
: AllocationInst(ValueKind::AllocBoxInst, Loc,
SILType::getPrimitiveObjectType(BoxType)),
NumOperands(TypeDependentOperands.size()),
VarInfo(Var, getTrailingObjects<char>()) {
TrailingOperandsList::InitOperandsList(getAllOperands().begin(), this,
TypeDependentOperands);
}
AllocBoxInst *AllocBoxInst::create(SILDebugLocation Loc,
CanSILBoxType BoxType,
SILFunction &F,
SILOpenedArchetypesState &OpenedArchetypes,
SILDebugVariable Var) {
SmallVector<SILValue, 8> TypeDependentOperands;
collectTypeDependentOperands(TypeDependentOperands, OpenedArchetypes, F,
BoxType);
void *Buffer = allocateDebugVarCarryingInst<AllocBoxInst>(
F.getModule(), Var, TypeDependentOperands);
return ::new (Buffer)
AllocBoxInst(Loc, BoxType, TypeDependentOperands, F, Var);
}
/// getDecl - Return the underlying variable declaration associated with this
/// allocation, or null if this is a temporary allocation.
VarDecl *AllocBoxInst::getDecl() const {
return getLoc().getAsASTNode<VarDecl>();
}
DebugValueInst::DebugValueInst(SILDebugLocation DebugLoc, SILValue Operand,
SILDebugVariable Var)
: UnaryInstructionBase(DebugLoc, Operand),
VarInfo(Var, getTrailingObjects<char>()) {}
DebugValueInst *DebugValueInst::create(SILDebugLocation DebugLoc,
SILValue Operand, SILModule &M,
SILDebugVariable Var) {
void *buf = allocateDebugVarCarryingInst<DebugValueInst>(M, Var);
return ::new (buf) DebugValueInst(DebugLoc, Operand, Var);
}
DebugValueAddrInst::DebugValueAddrInst(SILDebugLocation DebugLoc,
SILValue Operand, SILDebugVariable Var)
: UnaryInstructionBase(DebugLoc, Operand),
VarInfo(Var, getTrailingObjects<char>()) {}
DebugValueAddrInst *DebugValueAddrInst::create(SILDebugLocation DebugLoc,
SILValue Operand, SILModule &M,
SILDebugVariable Var) {
void *buf = allocateDebugVarCarryingInst<DebugValueAddrInst>(M, Var);
return ::new (buf) DebugValueAddrInst(DebugLoc, Operand, Var);
}
VarDecl *DebugValueInst::getDecl() const {
return getLoc().getAsASTNode<VarDecl>();
}
VarDecl *DebugValueAddrInst::getDecl() const {
return getLoc().getAsASTNode<VarDecl>();
}
AllocExistentialBoxInst::AllocExistentialBoxInst(
SILDebugLocation Loc, SILType ExistentialType, CanType ConcreteType,
ArrayRef<ProtocolConformanceRef> Conformances,
ArrayRef<SILValue> TypeDependentOperands, SILFunction *Parent)
: AllocationInst(ValueKind::AllocExistentialBoxInst, Loc,
ExistentialType.getObjectType()),
NumOperands(TypeDependentOperands.size()),
ConcreteType(ConcreteType), Conformances(Conformances) {
TrailingOperandsList::InitOperandsList(getAllOperands().begin(), this,
TypeDependentOperands);
}
static void declareWitnessTable(SILModule &Mod,
ProtocolConformanceRef conformanceRef) {
if (conformanceRef.isAbstract()) return;
auto C = conformanceRef.getConcrete();
if (!Mod.lookUpWitnessTable(C, false))
Mod.createWitnessTableDeclaration(C,
getLinkageForProtocolConformance(C->getRootNormalConformance(),
NotForDefinition));
}
AllocExistentialBoxInst *AllocExistentialBoxInst::create(
SILDebugLocation Loc, SILType ExistentialType, CanType ConcreteType,
ArrayRef<ProtocolConformanceRef> Conformances,
SILFunction *F,
SILOpenedArchetypesState &OpenedArchetypes) {
SmallVector<SILValue, 8> TypeDependentOperands;
collectTypeDependentOperands(TypeDependentOperands, OpenedArchetypes, *F,
ConcreteType);
SILModule &Mod = F->getModule();
void *Buffer =
Mod.allocateInst(sizeof(AllocExistentialBoxInst) +
sizeof(Operand) * (TypeDependentOperands.size()),
alignof(AllocExistentialBoxInst));
for (ProtocolConformanceRef C : Conformances)
declareWitnessTable(Mod, C);
return ::new (Buffer) AllocExistentialBoxInst(Loc,
ExistentialType,
ConcreteType,
Conformances,
TypeDependentOperands,
F);
}
AllocValueBufferInst::AllocValueBufferInst(
SILDebugLocation DebugLoc, SILType valueType, SILValue operand,
ArrayRef<SILValue> TypeDependentOperands)
: UnaryInstructionWithTypeDependentOperandsBase(DebugLoc, operand,
TypeDependentOperands,
valueType.getAddressType()) {}
AllocValueBufferInst *
AllocValueBufferInst::create(SILDebugLocation DebugLoc, SILType valueType,
SILValue operand, SILFunction &F,
SILOpenedArchetypesState &OpenedArchetypes) {
SmallVector<SILValue, 8> TypeDependentOperands;
collectTypeDependentOperands(TypeDependentOperands, OpenedArchetypes, F,
valueType.getSwiftRValueType());
void *Buffer = F.getModule().allocateInst(
sizeof(AllocValueBufferInst) +
sizeof(Operand) * (TypeDependentOperands.size() + 1),
alignof(AllocValueBufferInst));
return ::new (Buffer) AllocValueBufferInst(DebugLoc, valueType, operand,
TypeDependentOperands);
}
BuiltinInst *BuiltinInst::create(SILDebugLocation Loc, Identifier Name,
SILType ReturnType,
SubstitutionList Substitutions,
ArrayRef<SILValue> Args,
SILFunction &F) {
void *Buffer = F.getModule().allocateInst(
sizeof(BuiltinInst)
+ decltype(Operands)::getExtraSize(Args.size())
+ sizeof(Substitution) * Substitutions.size(),
alignof(BuiltinInst));
return ::new (Buffer) BuiltinInst(Loc, Name, ReturnType, Substitutions,
Args);
}
BuiltinInst::BuiltinInst(SILDebugLocation Loc, Identifier Name,
SILType ReturnType, SubstitutionList Subs,
ArrayRef<SILValue> Args)
: SILInstruction(ValueKind::BuiltinInst, Loc, ReturnType), Name(Name),
NumSubstitutions(Subs.size()), Operands(this, Args) {
static_assert(IsTriviallyCopyable<Substitution>::value,
"assuming Substitution is trivially copyable");
memcpy(getSubstitutionsStorage(), Subs.begin(),
sizeof(Substitution) * Subs.size());
}
InitBlockStorageHeaderInst *
InitBlockStorageHeaderInst::create(SILFunction &F,
SILDebugLocation DebugLoc, SILValue BlockStorage,
SILValue InvokeFunction, SILType BlockType,
SubstitutionList Subs) {
void *Buffer = F.getModule().allocateInst(
sizeof(InitBlockStorageHeaderInst) + sizeof(Substitution) * Subs.size(),
alignof(InitBlockStorageHeaderInst));
return ::new (Buffer) InitBlockStorageHeaderInst(DebugLoc, BlockStorage,
InvokeFunction, BlockType,
Subs);
}
ApplyInst::ApplyInst(SILDebugLocation Loc, SILValue Callee,
SILType SubstCalleeTy, SILType Result,
SubstitutionList Subs,
ArrayRef<SILValue> Args, ArrayRef<SILValue> TypeDependentOperands,
bool isNonThrowing)
: ApplyInstBase(ValueKind::ApplyInst, Loc, Callee, SubstCalleeTy, Subs,
Args, TypeDependentOperands, Result) {
setNonThrowing(isNonThrowing);
}
ApplyInst *ApplyInst::create(SILDebugLocation Loc, SILValue Callee,
SILType SubstCalleeTy, SILType Result,
SubstitutionList Subs,
ArrayRef<SILValue> Args, bool isNonThrowing,
SILFunction &F,
SILOpenedArchetypesState &OpenedArchetypes) {
SmallVector<SILValue, 32> TypeDependentOperands;
collectTypeDependentOperands(TypeDependentOperands, OpenedArchetypes, F,
SubstCalleeTy.getSwiftRValueType(), Subs);
void *Buffer = allocate(F, Subs, TypeDependentOperands, Args);
return ::new(Buffer) ApplyInst(Loc, Callee, SubstCalleeTy,
Result, Subs, Args,
TypeDependentOperands, isNonThrowing);
}
bool swift::doesApplyCalleeHaveSemantics(SILValue callee, StringRef semantics) {
if (auto *FRI = dyn_cast<FunctionRefInst>(callee))
if (auto *F = FRI->getReferencedFunction())
return F->hasSemanticsAttr(semantics);
return false;
}
void *swift::allocateApplyInst(SILFunction &F, size_t size, size_t alignment) {
return F.getModule().allocateInst(size, alignment);
}
PartialApplyInst::PartialApplyInst(SILDebugLocation Loc, SILValue Callee,
SILType SubstCalleeTy,
SubstitutionList Subs,
ArrayRef<SILValue> Args,
ArrayRef<SILValue> TypeDependentOperands,
SILType ClosureType)
// FIXME: the callee should have a lowered SIL function type, and
// PartialApplyInst
// should derive the type of its result by partially applying the callee's
// type.
: ApplyInstBase(ValueKind::PartialApplyInst, Loc, Callee, SubstCalleeTy,
Subs, Args, TypeDependentOperands, ClosureType) {}
PartialApplyInst *
PartialApplyInst::create(SILDebugLocation Loc, SILValue Callee,
SILType SubstCalleeTy, SubstitutionList Subs,
ArrayRef<SILValue> Args, SILType ClosureType,
SILFunction &F,
SILOpenedArchetypesState &OpenedArchetypes) {
SmallVector<SILValue, 32> TypeDependentOperands;
collectTypeDependentOperands(TypeDependentOperands, OpenedArchetypes, F,
SubstCalleeTy.getSwiftRValueType(), Subs);
void *Buffer = allocate(F, Subs, TypeDependentOperands, Args);
return ::new(Buffer) PartialApplyInst(Loc, Callee, SubstCalleeTy,
Subs, Args,
TypeDependentOperands, ClosureType);
}
TryApplyInstBase::TryApplyInstBase(ValueKind valueKind, SILDebugLocation Loc,
SILBasicBlock *normalBB,
SILBasicBlock *errorBB)
: TermInst(valueKind, Loc), DestBBs{{this, normalBB}, {this, errorBB}} {}
TryApplyInst::TryApplyInst(SILDebugLocation Loc, SILValue callee,
SILType substCalleeTy, SubstitutionList subs,
ArrayRef<SILValue> args,
ArrayRef<SILValue> TypeDependentOperands,
SILBasicBlock *normalBB, SILBasicBlock *errorBB)
: ApplyInstBase(ValueKind::TryApplyInst, Loc, callee, substCalleeTy, subs,
args, TypeDependentOperands, normalBB, errorBB) {}
TryApplyInst *TryApplyInst::create(SILDebugLocation Loc, SILValue callee,
SILType substCalleeTy,
SubstitutionList subs,
ArrayRef<SILValue> args,
SILBasicBlock *normalBB,
SILBasicBlock *errorBB, SILFunction &F,
SILOpenedArchetypesState &OpenedArchetypes) {
SmallVector<SILValue, 32> TypeDependentOperands;
collectTypeDependentOperands(TypeDependentOperands, OpenedArchetypes, F,
substCalleeTy.getSwiftRValueType(), subs);
void *buffer = allocate(F, subs, TypeDependentOperands, args);
return ::new (buffer) TryApplyInst(Loc, callee, substCalleeTy, subs, args,
TypeDependentOperands,
normalBB, errorBB);
}
FunctionRefInst::FunctionRefInst(SILDebugLocation Loc, SILFunction *F)
: LiteralInst(ValueKind::FunctionRefInst, Loc, F->getLoweredType()),
Function(F) {
F->incrementRefCount();
}
FunctionRefInst::~FunctionRefInst() {
if (Function)
Function->decrementRefCount();
}
void FunctionRefInst::dropReferencedFunction() {
if (Function)
Function->decrementRefCount();
Function = nullptr;
}
AllocGlobalInst::AllocGlobalInst(SILDebugLocation Loc,
SILGlobalVariable *Global)
: SILInstruction(ValueKind::AllocGlobalInst, Loc),
Global(Global) {}
AllocGlobalInst::AllocGlobalInst(SILDebugLocation Loc)
: SILInstruction(ValueKind::AllocGlobalInst, Loc) {}
GlobalAddrInst::GlobalAddrInst(SILDebugLocation Loc,
SILGlobalVariable *Global)
: LiteralInst(ValueKind::GlobalAddrInst, Loc,
Global->getLoweredType().getAddressType()),
Global(Global) {}
GlobalAddrInst::GlobalAddrInst(SILDebugLocation Loc, SILType Ty)
: LiteralInst(ValueKind::GlobalAddrInst, Loc, Ty), Global(nullptr) {}
const IntrinsicInfo &BuiltinInst::getIntrinsicInfo() const {
return getModule().getIntrinsicInfo(getName());
}
const BuiltinInfo &BuiltinInst::getBuiltinInfo() const {
return getModule().getBuiltinInfo(getName());
}
static unsigned getWordsForBitWidth(unsigned bits) {
return (bits + llvm::integerPartWidth - 1)/llvm::integerPartWidth;
}
template<typename INST>
static void *allocateLiteralInstWithTextSize(SILFunction &F, unsigned length) {
return F.getModule().allocateInst(sizeof(INST) + length, alignof(INST));
}
template<typename INST>
static void *allocateLiteralInstWithBitSize(SILFunction &F, unsigned bits) {
unsigned words = getWordsForBitWidth(bits);
return F.getModule().allocateInst(
sizeof(INST) + sizeof(llvm::integerPart)*words, alignof(INST));
}
IntegerLiteralInst::IntegerLiteralInst(SILDebugLocation Loc, SILType Ty,
const llvm::APInt &Value)
: LiteralInst(ValueKind::IntegerLiteralInst, Loc, Ty),
numBits(Value.getBitWidth()) {
std::uninitialized_copy_n(Value.getRawData(), Value.getNumWords(),
getTrailingObjects<llvm::integerPart>());
}
IntegerLiteralInst *IntegerLiteralInst::create(SILDebugLocation Loc,
SILType Ty, const APInt &Value,
SILFunction &B) {
auto intTy = Ty.castTo<BuiltinIntegerType>();
assert(intTy->getGreatestWidth() == Value.getBitWidth() &&
"IntegerLiteralInst APInt value's bit width doesn't match type");
(void)intTy;
void *buf = allocateLiteralInstWithBitSize<IntegerLiteralInst>(B,
Value.getBitWidth());
return ::new (buf) IntegerLiteralInst(Loc, Ty, Value);
}
IntegerLiteralInst *IntegerLiteralInst::create(SILDebugLocation Loc,
SILType Ty, intmax_t Value,
SILFunction &B) {
auto intTy = Ty.castTo<BuiltinIntegerType>();
return create(Loc, Ty,
APInt(intTy->getGreatestWidth(), Value), B);
}
IntegerLiteralInst *IntegerLiteralInst::create(IntegerLiteralExpr *E,
SILDebugLocation Loc,
SILFunction &F) {
return create(
Loc, SILType::getBuiltinIntegerType(
E->getType()->castTo<BuiltinIntegerType>()->getGreatestWidth(),
F.getASTContext()),
E->getValue(), F);
}
/// getValue - Return the APInt for the underlying integer literal.
APInt IntegerLiteralInst::getValue() const {
return APInt(numBits, {getTrailingObjects<llvm::integerPart>(),
getWordsForBitWidth(numBits)});
}
FloatLiteralInst::FloatLiteralInst(SILDebugLocation Loc, SILType Ty,
const APInt &Bits)
: LiteralInst(ValueKind::FloatLiteralInst, Loc, Ty),
numBits(Bits.getBitWidth()) {
std::uninitialized_copy_n(Bits.getRawData(), Bits.getNumWords(),
getTrailingObjects<llvm::integerPart>());
}
FloatLiteralInst *FloatLiteralInst::create(SILDebugLocation Loc, SILType Ty,
const APFloat &Value,
SILFunction &B) {
auto floatTy = Ty.castTo<BuiltinFloatType>();
assert(&floatTy->getAPFloatSemantics() == &Value.getSemantics() &&
"FloatLiteralInst value's APFloat semantics do not match type");
(void)floatTy;
APInt Bits = Value.bitcastToAPInt();
void *buf = allocateLiteralInstWithBitSize<FloatLiteralInst>(B,
Bits.getBitWidth());
return ::new (buf) FloatLiteralInst(Loc, Ty, Bits);
}
FloatLiteralInst *FloatLiteralInst::create(FloatLiteralExpr *E,
SILDebugLocation Loc,
SILFunction &F) {
return create(Loc,
// Builtin floating-point types are always valid SIL types.
SILType::getBuiltinFloatType(
E->getType()->castTo<BuiltinFloatType>()->getFPKind(),
F.getASTContext()),
E->getValue(), F);
}
APInt FloatLiteralInst::getBits() const {
return APInt(numBits, {getTrailingObjects<llvm::integerPart>(),
getWordsForBitWidth(numBits)});
}
APFloat FloatLiteralInst::getValue() const {
return APFloat(getType().castTo<BuiltinFloatType>()->getAPFloatSemantics(),
getBits());
}
StringLiteralInst::StringLiteralInst(SILDebugLocation Loc, StringRef Text,
Encoding encoding, SILType Ty)
: LiteralInst(ValueKind::StringLiteralInst, Loc, Ty), Length(Text.size()),
TheEncoding(encoding) {
memcpy(getTrailingObjects<char>(), Text.data(), Text.size());
}
StringLiteralInst *StringLiteralInst::create(SILDebugLocation Loc,
StringRef text, Encoding encoding,
SILFunction &F) {
void *buf
= allocateLiteralInstWithTextSize<StringLiteralInst>(F, text.size());
auto Ty = SILType::getRawPointerType(F.getModule().getASTContext());
return ::new (buf) StringLiteralInst(Loc, text, encoding, Ty);
}
uint64_t StringLiteralInst::getCodeUnitCount() {
if (TheEncoding == Encoding::UTF16)
return unicode::getUTF16Length(getValue());
return Length;
}
ConstStringLiteralInst::ConstStringLiteralInst(SILDebugLocation Loc,
StringRef Text,
Encoding encoding, SILType Ty)
: LiteralInst(ValueKind::ConstStringLiteralInst, Loc, Ty),
Length(Text.size()), TheEncoding(encoding) {
memcpy(getTrailingObjects<char>(), Text.data(), Text.size());
}
ConstStringLiteralInst *ConstStringLiteralInst::create(SILDebugLocation Loc,
StringRef text,
Encoding encoding,
SILFunction &F) {
void *buf =
allocateLiteralInstWithTextSize<ConstStringLiteralInst>(F, text.size());
auto Ty = SILType::getRawPointerType(F.getModule().getASTContext());
return ::new (buf) ConstStringLiteralInst(Loc, text, encoding, Ty);
}
uint64_t ConstStringLiteralInst::getCodeUnitCount() {
if (TheEncoding == Encoding::UTF16)
return unicode::getUTF16Length(getValue());
return Length;
}
StoreInst::StoreInst(
SILDebugLocation Loc, SILValue Src, SILValue Dest,
StoreOwnershipQualifier Qualifier = StoreOwnershipQualifier::Unqualified)
: SILInstruction(ValueKind::StoreInst, Loc), Operands(this, Src, Dest),
OwnershipQualifier(Qualifier) {}
StoreBorrowInst::StoreBorrowInst(SILDebugLocation DebugLoc, SILValue Src,
SILValue Dest)
: SILInstruction(ValueKind::StoreBorrowInst, DebugLoc, Dest->getType()),
Operands(this, Src, Dest) {}
EndBorrowInst::EndBorrowInst(SILDebugLocation DebugLoc, SILValue Src,
SILValue Dest)
: SILInstruction(ValueKind::EndBorrowInst, DebugLoc),
Operands(this, Src, Dest) {}
EndBorrowArgumentInst::EndBorrowArgumentInst(SILDebugLocation DebugLoc,
SILArgument *Arg)
: UnaryInstructionBase(DebugLoc, SILValue(Arg)) {}
StringRef swift::getSILAccessKindName(SILAccessKind kind) {
switch (kind) {
case SILAccessKind::Init: return "init";
case SILAccessKind::Read: return "read";
case SILAccessKind::Modify: return "modify";
case SILAccessKind::Deinit: return "deinit";
}
llvm_unreachable("bad access kind");
}
StringRef swift::getSILAccessEnforcementName(SILAccessEnforcement enforcement) {
switch (enforcement) {
case SILAccessEnforcement::Unknown: return "unknown";
case SILAccessEnforcement::Static: return "static";
case SILAccessEnforcement::Dynamic: return "dynamic";
case SILAccessEnforcement::Unsafe: return "unsafe";
}
llvm_unreachable("bad access enforcement");
}
AssignInst::AssignInst(SILDebugLocation Loc, SILValue Src, SILValue Dest)
: SILInstruction(ValueKind::AssignInst, Loc), Operands(this, Src, Dest) {}
MarkFunctionEscapeInst *
MarkFunctionEscapeInst::create(SILDebugLocation Loc,
ArrayRef<SILValue> Elements, SILFunction &F) {
void *Buffer = F.getModule().allocateInst(sizeof(MarkFunctionEscapeInst) +
decltype(Operands)::getExtraSize(Elements.size()),
alignof(MarkFunctionEscapeInst));
return ::new(Buffer) MarkFunctionEscapeInst(Loc, Elements);
}
MarkFunctionEscapeInst::MarkFunctionEscapeInst(SILDebugLocation Loc,
ArrayRef<SILValue> Elems)
: SILInstruction(ValueKind::MarkFunctionEscapeInst, Loc),
Operands(this, Elems) {}
static SILType getPinResultType(SILType operandType) {
return SILType::getPrimitiveObjectType(
OptionalType::get(operandType.getSwiftRValueType())->getCanonicalType());
}
StrongPinInst::StrongPinInst(SILDebugLocation Loc, SILValue operand,
Atomicity atomicity)
: UnaryInstructionBase(Loc, operand, getPinResultType(operand->getType())) {
setAtomicity(atomicity);
}
CopyAddrInst::CopyAddrInst(SILDebugLocation Loc, SILValue SrcLValue,
SILValue DestLValue, IsTake_t isTakeOfSrc,
IsInitialization_t isInitializationOfDest)
: SILInstruction(ValueKind::CopyAddrInst, Loc), IsTakeOfSrc(isTakeOfSrc),
IsInitializationOfDest(isInitializationOfDest),
Operands(this, SrcLValue, DestLValue) {}
BindMemoryInst *
BindMemoryInst::create(SILDebugLocation Loc, SILValue Base, SILValue Index,
SILType BoundType, SILFunction &F,
SILOpenedArchetypesState &OpenedArchetypes) {
SmallVector<SILValue, 8> TypeDependentOperands;
collectTypeDependentOperands(TypeDependentOperands, OpenedArchetypes, F,
BoundType.getSwiftRValueType());
void *Buffer = F.getModule().allocateInst(
sizeof(BindMemoryInst) +
sizeof(Operand) * (TypeDependentOperands.size() + NumFixedOpers),
alignof(BindMemoryInst));
return ::new (Buffer)
BindMemoryInst(Loc, Base, Index, BoundType, TypeDependentOperands);
}
BindMemoryInst::BindMemoryInst(SILDebugLocation Loc, SILValue Base,
SILValue Index,
SILType BoundType,
ArrayRef<SILValue> TypeDependentOperands)
: SILInstruction(ValueKind::BindMemoryInst, Loc),
BoundType(BoundType),
NumOperands(NumFixedOpers + TypeDependentOperands.size()) {
TrailingOperandsList::InitOperandsList(getAllOperands().begin(), this,
Base, Index, TypeDependentOperands);
}
UncheckedRefCastAddrInst::UncheckedRefCastAddrInst(SILDebugLocation Loc,
SILValue src,
CanType srcType,
SILValue dest,
CanType targetType)
: SILInstruction(ValueKind::UncheckedRefCastAddrInst, Loc),
Operands(this, src, dest), SourceType(srcType), TargetType(targetType) {}
UnconditionalCheckedCastAddrInst::UnconditionalCheckedCastAddrInst(
SILDebugLocation Loc, CastConsumptionKind consumption, SILValue src,
CanType srcType, SILValue dest, CanType targetType)
: SILInstruction(ValueKind::UnconditionalCheckedCastAddrInst, Loc),
Operands(this, src, dest), ConsumptionKind(consumption),
SourceType(srcType), TargetType(targetType) {}
StructInst *StructInst::create(SILDebugLocation Loc, SILType Ty,
ArrayRef<SILValue> Elements, SILFunction &F) {
void *Buffer = F.getModule().allocateInst(sizeof(StructInst) +
decltype(Operands)::getExtraSize(Elements.size()),
alignof(StructInst));
return ::new(Buffer) StructInst(Loc, Ty, Elements);
}
StructInst::StructInst(SILDebugLocation Loc, SILType Ty,
ArrayRef<SILValue> Elems)
: SILInstruction(ValueKind::StructInst, Loc, Ty), Operands(this, Elems) {
assert(!Ty.getStructOrBoundGenericStruct()->hasUnreferenceableStorage());
}
TupleInst *TupleInst::create(SILDebugLocation Loc, SILType Ty,
ArrayRef<SILValue> Elements, SILFunction &F) {
void *Buffer = F.getModule().allocateInst(sizeof(TupleInst) +
decltype(Operands)::getExtraSize(Elements.size()),
alignof(TupleInst));
return ::new(Buffer) TupleInst(Loc, Ty, Elements);
}
TupleInst::TupleInst(SILDebugLocation Loc, SILType Ty,
ArrayRef<SILValue> Elems)
: SILInstruction(ValueKind::TupleInst, Loc, Ty), Operands(this, Elems) {}
MetatypeInst::MetatypeInst(SILDebugLocation Loc, SILType Metatype,
ArrayRef<SILValue> TypeDependentOperands)
: SILInstruction(ValueKind::MetatypeInst, Loc, Metatype),
NumOperands(TypeDependentOperands.size()) {
TrailingOperandsList::InitOperandsList(getAllOperands().begin(), this,
TypeDependentOperands);
}
bool TupleExtractInst::isTrivialEltOfOneRCIDTuple() const {
SILModule &Mod = getModule();
// If we are not trivial, bail.
if (!getType().isTrivial(Mod))
return false;
// If the elt we are extracting is trivial, we cannot have any non trivial
// fields.
if (getOperand()->getType().isTrivial(Mod))
return false;
// Ok, now we know that our tuple has non-trivial fields. Make sure that our
// parent tuple has only one non-trivial field.
bool FoundNonTrivialField = false;
SILType OpTy = getOperand()->getType();
unsigned FieldNo = getFieldNo();
// For each element index of the tuple...
for (unsigned i = 0, e = getNumTupleElts(); i != e; ++i) {
// If the element index is the one we are extracting, skip it...
if (i == FieldNo)
continue;
// Otherwise check if we have a non-trivial type. If we don't have one,
// continue.
if (OpTy.getTupleElementType(i).isTrivial(Mod))
continue;
// Ok, this type is non-trivial. If we have not seen a non-trivial field
// yet, set the FoundNonTrivialField flag.
if (!FoundNonTrivialField) {
FoundNonTrivialField = true;
continue;
}
// If we have seen a field and thus the FoundNonTrivialField flag is set,
// return false.
return false;
}
// We found only one trivial field.
assert(FoundNonTrivialField && "Tuple is non-trivial, but does not have a "
"non-trivial element?!");
return true;
}
bool TupleExtractInst::isEltOnlyNonTrivialElt() const {
SILModule &Mod = getModule();
// If the elt we are extracting is trivial, we cannot be a non-trivial
// field... return false.
if (getType().isTrivial(Mod))
return false;
// Ok, we know that the elt we are extracting is non-trivial. Make sure that
// we have no other non-trivial elts.
SILType OpTy = getOperand()->getType();
unsigned FieldNo = getFieldNo();
// For each element index of the tuple...
for (unsigned i = 0, e = getNumTupleElts(); i != e; ++i) {
// If the element index is the one we are extracting, skip it...
if (i == FieldNo)
continue;
// Otherwise check if we have a non-trivial type. If we don't have one,
// continue.
if (OpTy.getTupleElementType(i).isTrivial(Mod))
continue;
// If we do have a non-trivial type, return false. We have multiple
// non-trivial types violating our condition.
return false;
}
// We checked every other elt of the tuple and did not find any
// non-trivial elt except for ourselves. Return true.
return true;
}
bool StructExtractInst::isTrivialFieldOfOneRCIDStruct() const {
SILModule &Mod = getModule();
// If we are not trivial, bail.
if (!getType().isTrivial(Mod))
return false;
SILType StructTy = getOperand()->getType();
// If the elt we are extracting is trivial, we cannot have any non trivial
// fields.
if (StructTy.isTrivial(Mod))
return false;
// Ok, now we know that our tuple has non-trivial fields. Make sure that our
// parent tuple has only one non-trivial field.
bool FoundNonTrivialField = false;
// For each element index of the tuple...
for (VarDecl *D : getStructDecl()->getStoredProperties()) {
// If the field is the one we are extracting, skip it...
if (Field == D)
continue;
// Otherwise check if we have a non-trivial type. If we don't have one,
// continue.
if (StructTy.getFieldType(D, Mod).isTrivial(Mod))
continue;
// Ok, this type is non-trivial. If we have not seen a non-trivial field
// yet, set the FoundNonTrivialField flag.
if (!FoundNonTrivialField) {
FoundNonTrivialField = true;
continue;
}
// If we have seen a field and thus the FoundNonTrivialField flag is set,
// return false.
return false;
}
// We found only one trivial field.
assert(FoundNonTrivialField && "Struct is non-trivial, but does not have a "
"non-trivial field?!");
return true;
}
/// Return true if we are extracting the only non-trivial field of out parent
/// struct. This implies that a ref count operation on the aggregate is
/// equivalent to a ref count operation on this field.
bool StructExtractInst::isFieldOnlyNonTrivialField() const {
SILModule &Mod = getModule();
// If the field we are extracting is trivial, we cannot be a non-trivial
// field... return false.
if (getType().isTrivial(Mod))
return false;
SILType StructTy = getOperand()->getType();
// Ok, we are visiting a non-trivial field. Then for every stored field...
for (VarDecl *D : getStructDecl()->getStoredProperties()) {
// If we are visiting our own field continue.
if (Field == D)
continue;
// Ok, we have a field that is not equal to the field we are
// extracting. If that field is trivial, we do not care about
// it... continue.
if (StructTy.getFieldType(D, Mod).isTrivial(Mod))
continue;
// We have found a non trivial member that is not the member we are
// extracting, fail.
return false;
}
// We checked every other field of the struct and did not find any
// non-trivial fields except for ourselves. Return true.
return true;
}
//===----------------------------------------------------------------------===//
// Instructions representing terminators