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b1f69030fc
I also included changes to the rest of the SIL optimizer pipeline to ensure that the part of the optimizer pipeline before we lower tuple_addr_constructor (which is right after we run TransferNonSendable) work as before. The reason why I am doing this is that this ensures that diagnostic passes can tell the difference in between: ``` x = (a, b, c) ``` and ``` x.0 = a x.1 = b x.2 = c ``` This is important for things like TransferNonSendable where assigning over the entire tuple element is treated differently from if one were to initialize it in pieces using projections. rdar://117880194
79 lines
2.7 KiB
C++
79 lines
2.7 KiB
C++
//===--- LowerTupleAddrConstructor.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 - 2023 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 "swift/SIL/SILBuilder.h"
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#include "swift/SIL/SILFunction.h"
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#include "swift/SILOptimizer/PassManager/Transforms.h"
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using namespace swift;
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//===----------------------------------------------------------------------===//
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// MARK: Top Level Entrypoint
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//===----------------------------------------------------------------------===//
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namespace {
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class LowerTupleAddrConstructorTransform : public SILFunctionTransform {
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void run() override {
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SILFunction *function = getFunction();
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// Once we have finished, lower all tuple_addr_constructor that we see.
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bool deletedInst = false;
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for (auto &block : *function) {
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for (auto ii = block.begin(), ie = block.end(); ii != ie;) {
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auto *inst = dyn_cast<TupleAddrConstructorInst>(&*ii);
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++ii;
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if (!inst)
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continue;
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SILBuilderWithScope builder(inst);
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unsigned count = 0;
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visitExplodedTupleValue(
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inst->getDest(),
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[&](SILValue value, std::optional<unsigned> index) -> SILValue {
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if (!index) {
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SILValue elt = inst->getElement(count);
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if (elt->getType().isAddress()) {
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builder.createCopyAddr(inst->getLoc(), elt, value, IsTake,
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inst->isInitializationOfDest());
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} else {
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builder.emitStoreValueOperation(
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inst->getLoc(), elt, value,
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bool(inst->isInitializationOfDest())
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? StoreOwnershipQualifier::Init
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: StoreOwnershipQualifier::Assign);
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}
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++count;
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return value;
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}
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auto *teai =
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builder.createTupleElementAddr(inst->getLoc(), value, *index);
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return teai;
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});
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inst->eraseFromParent();
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deletedInst = true;
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}
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}
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if (deletedInst)
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invalidateAnalysis(SILAnalysis::InvalidationKind::Instructions);
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}
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};
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} // end anonymous namespace
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SILTransform *swift::createLowerTupleAddrConstructor() {
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return new LowerTupleAddrConstructorTransform();
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}
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