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537 lines
22 KiB
C++
537 lines
22 KiB
C++
//===--- SILGenBuilder.cpp ------------------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#include "SILGenBuilder.h"
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#include "SILGenFunction.h"
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using namespace swift;
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using namespace Lowering;
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//===----------------------------------------------------------------------===//
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// Utility Methods
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//===----------------------------------------------------------------------===//
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SILGenModule &SILGenBuilder::getSILGenModule() const { return gen.SGM; }
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//===----------------------------------------------------------------------===//
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// Constructors
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//===----------------------------------------------------------------------===//
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SILGenBuilder::SILGenBuilder(SILGenFunction &gen)
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: SILBuilder(gen.F), gen(gen) {}
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SILGenBuilder::SILGenBuilder(SILGenFunction &gen, SILBasicBlock *insertBB)
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: SILBuilder(insertBB), gen(gen) {}
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SILGenBuilder::SILGenBuilder(SILGenFunction &gen, SILBasicBlock *insertBB,
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SmallVectorImpl<SILInstruction *> *insertedInsts)
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: SILBuilder(insertBB, insertedInsts), gen(gen) {}
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SILGenBuilder::SILGenBuilder(SILGenFunction &gen, SILBasicBlock *insertBB,
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SILBasicBlock::iterator insertInst)
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: SILBuilder(insertBB, insertInst), gen(gen) {}
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//===----------------------------------------------------------------------===//
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// Instruction Emission
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//===----------------------------------------------------------------------===//
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MetatypeInst *SILGenBuilder::createMetatype(SILLocation loc, SILType metatype) {
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auto theMetatype = metatype.castTo<MetatypeType>();
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// Getting a nontrivial metatype requires forcing any conformances necessary
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// to instantiate the type.
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switch (theMetatype->getRepresentation()) {
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case MetatypeRepresentation::Thin:
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break;
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case MetatypeRepresentation::Thick:
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case MetatypeRepresentation::ObjC: {
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// Walk the type recursively to look for substitutions we may need.
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theMetatype.getInstanceType().findIf([&](Type t) -> bool {
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if (!t->getAnyNominal())
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return false;
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auto subs =
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t->gatherAllSubstitutions(getSILGenModule().SwiftModule, nullptr);
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getSILGenModule().useConformancesFromSubstitutions(subs);
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return false;
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});
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break;
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}
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}
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return SILBuilder::createMetatype(loc, metatype);
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}
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ApplyInst *SILGenBuilder::createApply(SILLocation loc, SILValue fn,
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SILType substFnTy, SILType result,
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SubstitutionList subs,
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ArrayRef<SILValue> args) {
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getSILGenModule().useConformancesFromSubstitutions(subs);
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return SILBuilder::createApply(loc, fn, substFnTy, result, subs, args, false);
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}
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TryApplyInst *
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SILGenBuilder::createTryApply(SILLocation loc, SILValue fn, SILType substFnTy,
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SubstitutionList subs, ArrayRef<SILValue> args,
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SILBasicBlock *normalBB, SILBasicBlock *errorBB) {
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getSILGenModule().useConformancesFromSubstitutions(subs);
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return SILBuilder::createTryApply(loc, fn, substFnTy, subs, args, normalBB,
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errorBB);
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}
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PartialApplyInst *
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SILGenBuilder::createPartialApply(SILLocation loc, SILValue fn,
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SILType substFnTy, SubstitutionList subs,
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ArrayRef<SILValue> args, SILType closureTy) {
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getSILGenModule().useConformancesFromSubstitutions(subs);
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return SILBuilder::createPartialApply(loc, fn, substFnTy, subs, args,
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closureTy);
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}
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BuiltinInst *SILGenBuilder::createBuiltin(SILLocation loc, Identifier name,
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SILType resultTy,
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SubstitutionList subs,
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ArrayRef<SILValue> args) {
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getSILGenModule().useConformancesFromSubstitutions(subs);
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return SILBuilder::createBuiltin(loc, name, resultTy, subs, args);
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}
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InitExistentialAddrInst *SILGenBuilder::createInitExistentialAddr(
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SILLocation loc, SILValue existential, CanType formalConcreteType,
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SILType loweredConcreteType,
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ArrayRef<ProtocolConformanceRef> conformances) {
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for (auto conformance : conformances)
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getSILGenModule().useConformance(conformance);
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return SILBuilder::createInitExistentialAddr(
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loc, existential, formalConcreteType, loweredConcreteType, conformances);
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}
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InitExistentialOpaqueInst *SILGenBuilder::createInitExistentialOpaque(
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SILLocation Loc, SILType ExistentialType, CanType FormalConcreteType,
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SILValue Concrete, ArrayRef<ProtocolConformanceRef> Conformances) {
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for (auto conformance : Conformances)
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getSILGenModule().useConformance(conformance);
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return SILBuilder::createInitExistentialOpaque(
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Loc, ExistentialType, FormalConcreteType, Concrete, Conformances);
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}
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InitExistentialMetatypeInst *SILGenBuilder::createInitExistentialMetatype(
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SILLocation loc, SILValue metatype, SILType existentialType,
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ArrayRef<ProtocolConformanceRef> conformances) {
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for (auto conformance : conformances)
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getSILGenModule().useConformance(conformance);
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return SILBuilder::createInitExistentialMetatype(
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loc, metatype, existentialType, conformances);
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}
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InitExistentialRefInst *SILGenBuilder::createInitExistentialRef(
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SILLocation loc, SILType existentialType, CanType formalConcreteType,
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SILValue concreteValue, ArrayRef<ProtocolConformanceRef> conformances) {
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for (auto conformance : conformances)
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getSILGenModule().useConformance(conformance);
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return SILBuilder::createInitExistentialRef(
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loc, existentialType, formalConcreteType, concreteValue, conformances);
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}
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AllocExistentialBoxInst *SILGenBuilder::createAllocExistentialBox(
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SILLocation loc, SILType existentialType, CanType concreteType,
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ArrayRef<ProtocolConformanceRef> conformances) {
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for (auto conformance : conformances)
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getSILGenModule().useConformance(conformance);
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return SILBuilder::createAllocExistentialBox(loc, existentialType,
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concreteType, conformances);
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}
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ManagedValue SILGenBuilder::createStructExtract(SILLocation loc,
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ManagedValue base,
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VarDecl *decl) {
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ManagedValue borrowedBase = gen.emitManagedBeginBorrow(loc, base.getValue());
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SILValue extract =
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SILBuilder::createStructExtract(loc, borrowedBase.getValue(), decl);
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return ManagedValue::forUnmanaged(extract);
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}
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ManagedValue SILGenBuilder::createCopyValue(SILLocation loc,
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ManagedValue originalValue) {
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auto &lowering = getFunction().getTypeLowering(originalValue.getType());
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return createCopyValue(loc, originalValue, lowering);
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}
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ManagedValue SILGenBuilder::createCopyValue(SILLocation loc,
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ManagedValue originalValue,
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const TypeLowering &lowering) {
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if (lowering.isTrivial())
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return originalValue;
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SILType ty = originalValue.getType();
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assert(!ty.isAddress() && "Can not perform a copy value of an address typed "
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"value");
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if (ty.isObject() &&
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originalValue.getOwnershipKind() == ValueOwnershipKind::Trivial) {
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return originalValue;
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}
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SILValue result =
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lowering.emitCopyValue(*this, loc, originalValue.getValue());
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return gen.emitManagedRValueWithCleanup(result, lowering);
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}
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ManagedValue SILGenBuilder::createCopyUnownedValue(SILLocation loc,
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ManagedValue originalValue) {
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auto unownedType = originalValue.getType().castTo<UnownedStorageType>();
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assert(unownedType->isLoadable(ResilienceExpansion::Maximal));
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(void)unownedType;
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SILValue result =
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SILBuilder::createCopyUnownedValue(loc, originalValue.getValue());
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return gen.emitManagedRValueWithCleanup(result);
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}
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ManagedValue
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SILGenBuilder::createUnsafeCopyUnownedValue(SILLocation loc,
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ManagedValue originalValue) {
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auto unmanagedType = originalValue.getType().getAs<UnmanagedStorageType>();
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SILValue result = SILBuilder::createUnmanagedToRef(
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loc, originalValue.getValue(),
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SILType::getPrimitiveObjectType(unmanagedType.getReferentType()));
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SILBuilder::createUnmanagedRetainValue(loc, result, getDefaultAtomicity());
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return gen.emitManagedRValueWithCleanup(result);
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}
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ManagedValue SILGenBuilder::createOwnedPHIArgument(SILType type) {
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SILPHIArgument *arg =
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getInsertionBB()->createPHIArgument(type, ValueOwnershipKind::Owned);
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return gen.emitManagedRValueWithCleanup(arg);
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}
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ManagedValue SILGenBuilder::createAllocRef(
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SILLocation loc, SILType refType, bool objc, bool canAllocOnStack,
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ArrayRef<SILType> inputElementTypes,
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ArrayRef<ManagedValue> inputElementCountOperands) {
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llvm::SmallVector<SILType, 8> elementTypes(inputElementTypes.begin(),
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inputElementTypes.end());
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llvm::SmallVector<SILValue, 8> elementCountOperands;
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std::transform(std::begin(inputElementCountOperands),
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std::end(inputElementCountOperands),
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std::back_inserter(elementCountOperands),
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[](ManagedValue mv) -> SILValue { return mv.getValue(); });
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AllocRefInst *i = SILBuilder::createAllocRef(
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loc, refType, objc, canAllocOnStack, elementTypes, elementCountOperands);
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return gen.emitManagedRValueWithCleanup(i);
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}
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ManagedValue SILGenBuilder::createAllocRefDynamic(
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SILLocation loc, ManagedValue operand, SILType refType, bool objc,
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ArrayRef<SILType> inputElementTypes,
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ArrayRef<ManagedValue> inputElementCountOperands) {
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llvm::SmallVector<SILType, 8> elementTypes(inputElementTypes.begin(),
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inputElementTypes.end());
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llvm::SmallVector<SILValue, 8> elementCountOperands;
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std::transform(std::begin(inputElementCountOperands),
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std::end(inputElementCountOperands),
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std::back_inserter(elementCountOperands),
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[](ManagedValue mv) -> SILValue { return mv.getValue(); });
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AllocRefDynamicInst *i =
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SILBuilder::createAllocRefDynamic(loc, operand.getValue(), refType, objc,
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elementTypes, elementCountOperands);
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return gen.emitManagedRValueWithCleanup(i);
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}
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ManagedValue SILGenBuilder::createTupleExtract(SILLocation loc,
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ManagedValue base,
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unsigned index, SILType type) {
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ManagedValue borrowedBase = gen.emitManagedBeginBorrow(loc, base.getValue());
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SILValue extract =
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SILBuilder::createTupleExtract(loc, borrowedBase.getValue(), index, type);
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return ManagedValue::forUnmanaged(extract);
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}
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ManagedValue SILGenBuilder::createTupleExtract(SILLocation loc,
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ManagedValue value,
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unsigned index) {
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SILType type = value.getType().getTupleElementType(index);
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return createTupleExtract(loc, value, index, type);
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}
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ManagedValue SILGenBuilder::createLoadBorrow(SILLocation loc,
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ManagedValue base) {
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if (getFunction().getTypeLowering(base.getType()).isTrivial()) {
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auto *i = SILBuilder::createLoad(loc, base.getValue(),
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LoadOwnershipQualifier::Trivial);
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return ManagedValue::forUnmanaged(i);
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}
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auto *i = SILBuilder::createLoadBorrow(loc, base.getValue());
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return gen.emitManagedBorrowedRValueWithCleanup(base.getValue(), i);
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}
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ManagedValue SILGenBuilder::createFormalAccessLoadBorrow(SILLocation loc,
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ManagedValue base) {
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if (getFunction().getTypeLowering(base.getType()).isTrivial()) {
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auto *i = SILBuilder::createLoad(loc, base.getValue(),
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LoadOwnershipQualifier::Trivial);
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return ManagedValue::forUnmanaged(i);
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}
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SILValue baseValue = base.getValue();
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auto *i = SILBuilder::createLoadBorrow(loc, baseValue);
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return gen.emitFormalEvaluationManagedBorrowedRValueWithCleanup(loc,
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baseValue, i);
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}
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ManagedValue
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SILGenBuilder::createFormalAccessCopyValue(SILLocation loc,
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ManagedValue originalValue) {
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SILType ty = originalValue.getType();
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const auto &lowering = getFunction().getTypeLowering(ty);
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if (lowering.isTrivial())
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return originalValue;
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assert(!lowering.isAddressOnly() && "cannot perform a copy value of an "
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"address only type");
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if (ty.isObject() &&
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originalValue.getOwnershipKind() == ValueOwnershipKind::Trivial) {
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return originalValue;
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}
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SILValue result =
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lowering.emitCopyValue(*this, loc, originalValue.getValue());
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return gen.emitFormalAccessManagedRValueWithCleanup(loc, result);
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}
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ManagedValue SILGenBuilder::createFormalAccessCopyAddr(
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SILLocation loc, ManagedValue originalAddr, SILValue newAddr,
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IsTake_t isTake, IsInitialization_t isInit) {
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SILBuilder::createCopyAddr(loc, originalAddr.getValue(), newAddr, isTake,
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isInit);
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return gen.emitFormalAccessManagedBufferWithCleanup(loc, newAddr);
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}
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ManagedValue SILGenBuilder::bufferForExpr(
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SILLocation loc, SILType ty, const TypeLowering &lowering,
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SGFContext context, std::function<void (SILValue)> rvalueEmitter) {
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// If we have a single-buffer "emit into" initialization, use that for the
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// result.
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SILValue address = context.getAddressForInPlaceInitialization();
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// If we couldn't emit into the Initialization, emit into a temporary
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// allocation.
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if (!address) {
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address = gen.emitTemporaryAllocation(loc, ty.getObjectType());
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}
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rvalueEmitter(address);
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// If we have a single-buffer "emit into" initialization, use that for the
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// result.
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if (context.getAddressForInPlaceInitialization()) {
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context.getEmitInto()->finishInitialization(gen);
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return ManagedValue::forInContext();
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}
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// Add a cleanup for the temporary we allocated.
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if (lowering.isTrivial())
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return ManagedValue::forUnmanaged(address);
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return gen.emitManagedBufferWithCleanup(address);
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}
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ManagedValue SILGenBuilder::formalAccessBufferForExpr(
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SILLocation loc, SILType ty, const TypeLowering &lowering,
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SGFContext context, std::function<void(SILValue)> rvalueEmitter) {
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// If we have a single-buffer "emit into" initialization, use that for the
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// result.
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SILValue address = context.getAddressForInPlaceInitialization();
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// If we couldn't emit into the Initialization, emit into a temporary
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// allocation.
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if (!address) {
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address = gen.emitTemporaryAllocation(loc, ty.getObjectType());
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}
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rvalueEmitter(address);
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// If we have a single-buffer "emit into" initialization, use that for the
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// result.
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if (context.getAddressForInPlaceInitialization()) {
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context.getEmitInto()->finishInitialization(gen);
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return ManagedValue::forInContext();
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}
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// Add a cleanup for the temporary we allocated.
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if (lowering.isTrivial())
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return ManagedValue::forUnmanaged(address);
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return gen.emitFormalAccessManagedBufferWithCleanup(loc, address);
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}
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ManagedValue SILGenBuilder::createUncheckedEnumData(SILLocation loc,
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ManagedValue operand,
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EnumElementDecl *element) {
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if (operand.hasCleanup()) {
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SILValue newValue =
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SILBuilder::createUncheckedEnumData(loc, operand.forward(gen), element);
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return gen.emitManagedRValueWithCleanup(newValue);
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}
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ManagedValue borrowedBase = operand.borrow(gen, loc);
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SILValue newValue = SILBuilder::createUncheckedEnumData(
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loc, borrowedBase.getValue(), element);
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return ManagedValue::forUnmanaged(newValue);
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}
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ManagedValue SILGenBuilder::createUncheckedTakeEnumDataAddr(
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SILLocation loc, ManagedValue operand, EnumElementDecl *element,
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SILType ty) {
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// First see if we have a cleanup. If we do, we are going to forward and emit
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// a managed buffer with cleanup.
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if (operand.hasCleanup()) {
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return gen.emitManagedBufferWithCleanup(
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SILBuilder::createUncheckedTakeEnumDataAddr(loc, operand.forward(gen),
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element, ty));
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}
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SILValue result = SILBuilder::createUncheckedTakeEnumDataAddr(
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loc, operand.getUnmanagedValue(), element, ty);
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if (operand.isLValue())
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return ManagedValue::forLValue(result);
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return ManagedValue::forUnmanaged(result);
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}
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ManagedValue SILGenBuilder::createLoadTake(SILLocation loc, ManagedValue v) {
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auto &lowering = getFunction().getTypeLowering(v.getType());
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return createLoadTake(loc, v, lowering);
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}
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ManagedValue SILGenBuilder::createLoadTake(SILLocation loc, ManagedValue v,
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const TypeLowering &lowering) {
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assert(lowering.getLoweredType().getAddressType() == v.getType());
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SILValue result =
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lowering.emitLoadOfCopy(*this, loc, v.forward(gen), IsTake);
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if (lowering.isTrivial())
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return ManagedValue::forUnmanaged(result);
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assert(!lowering.isAddressOnly() && "cannot retain an unloadable type");
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return gen.emitManagedRValueWithCleanup(result, lowering);
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}
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ManagedValue SILGenBuilder::createLoadCopy(SILLocation loc, ManagedValue v) {
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auto &lowering = getFunction().getTypeLowering(v.getType());
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return createLoadCopy(loc, v, lowering);
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}
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ManagedValue SILGenBuilder::createLoadCopy(SILLocation loc, ManagedValue v,
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const TypeLowering &lowering) {
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assert(lowering.getLoweredType().getAddressType() == v.getType());
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SILValue result =
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lowering.emitLoadOfCopy(*this, loc, v.forward(gen), IsNotTake);
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if (lowering.isTrivial())
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return ManagedValue::forUnmanaged(result);
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assert(!lowering.isAddressOnly() && "cannot retain an unloadable type");
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return gen.emitManagedRValueWithCleanup(result, lowering);
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}
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ManagedValue SILGenBuilder::createFunctionArgument(SILType type,
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ValueDecl *decl) {
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SILFunction &F = getFunction();
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SILFunctionArgument *arg = F.begin()->createFunctionArgument(type, decl);
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if (arg->getType().isObject()) {
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if (arg->getOwnershipKind().isTrivialOr(ValueOwnershipKind::Owned))
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return gen.emitManagedRValueWithCleanup(arg);
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return ManagedValue::forBorrowedRValue(arg);
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}
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return gen.emitManagedBufferWithCleanup(arg);
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}
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ManagedValue
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SILGenBuilder::createMarkUninitialized(ValueDecl *decl, ManagedValue operand,
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MarkUninitializedInst::Kind muKind) {
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// We either have an owned or trivial value.
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SILValue value =
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SILBuilder::createMarkUninitialized(decl, operand.forward(gen), muKind);
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assert(value->getType().isObject() && "Expected only objects here");
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// If we have a trivial value, just return without a cleanup.
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if (operand.getOwnershipKind() != ValueOwnershipKind::Owned) {
|
|
return ManagedValue::forUnmanaged(value);
|
|
}
|
|
|
|
// Otherwise, recreate the cleanup.
|
|
return gen.emitManagedRValueWithCleanup(value);
|
|
}
|
|
|
|
ManagedValue SILGenBuilder::createEnum(SILLocation loc, ManagedValue payload,
|
|
EnumElementDecl *decl, SILType type) {
|
|
SILValue result =
|
|
SILBuilder::createEnum(loc, payload.forward(gen), decl, type);
|
|
if (result.getOwnershipKind() != ValueOwnershipKind::Owned)
|
|
return ManagedValue::forUnmanaged(result);
|
|
return gen.emitManagedRValueWithCleanup(result);
|
|
}
|
|
|
|
ManagedValue SILGenBuilder::createUnconditionalCheckedCastOpaque(
|
|
SILLocation loc, ManagedValue operand, SILType type) {
|
|
SILValue result = SILBuilder::createUnconditionalCheckedCastOpaque(
|
|
loc, operand.forward(gen), type);
|
|
return gen.emitManagedRValueWithCleanup(result);
|
|
}
|
|
|
|
ManagedValue SILGenBuilder::createUnconditionalCheckedCast(SILLocation loc,
|
|
ManagedValue operand,
|
|
SILType type) {
|
|
SILValue result = SILBuilder::createUnconditionalCheckedCast(
|
|
loc, operand.forward(gen), type);
|
|
return gen.emitManagedRValueWithCleanup(result);
|
|
}
|
|
|
|
void SILGenBuilder::createCheckedCastBranch(SILLocation loc, bool isExact,
|
|
ManagedValue operand, SILType type,
|
|
SILBasicBlock *trueBlock,
|
|
SILBasicBlock *falseBlock) {
|
|
SILBuilder::createCheckedCastBranch(loc, isExact, operand.forward(gen), type,
|
|
trueBlock, falseBlock);
|
|
}
|
|
|
|
ManagedValue SILGenBuilder::createUpcast(SILLocation Loc, ManagedValue Original,
|
|
SILType Type) {
|
|
bool hadCleanup = Original.hasCleanup();
|
|
bool isLValue = Original.isLValue();
|
|
|
|
SILValue convertedValue =
|
|
SILBuilder::createUpcast(Loc, Original.forward(gen), Type);
|
|
|
|
if (isLValue) {
|
|
return ManagedValue::forLValue(convertedValue);
|
|
}
|
|
|
|
if (!hadCleanup) {
|
|
return ManagedValue::forUnmanaged(convertedValue);
|
|
}
|
|
|
|
if (Type.isAddress()) {
|
|
return gen.emitManagedBufferWithCleanup(convertedValue);
|
|
}
|
|
|
|
return gen.emitManagedRValueWithCleanup(convertedValue);
|
|
}
|