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//===--- LowerTupleAddrConstructor.cpp ------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2023 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
//
//===----------------------------------------------------------------------===//
#include "swift/SIL/SILBuilder.h"
#include "swift/SIL/SILFunction.h"
#include "swift/SILOptimizer/PassManager/Transforms.h"
using namespace swift;
//===----------------------------------------------------------------------===//
// MARK: Top Level Entrypoint
//===----------------------------------------------------------------------===//
namespace {
class LowerTupleAddrConstructorTransform : public SILFunctionTransform {
void run() override {
SILFunction *function = getFunction();
// Once we have finished, lower all tuple_addr_constructor that we see.
bool deletedInst = false;
for (auto &block : *function) {
for (auto ii = block.begin(), ie = block.end(); ii != ie;) {
auto *inst = dyn_cast<TupleAddrConstructorInst>(&*ii);
++ii;
if (!inst)
continue;
SILBuilderWithScope builder(inst);
unsigned count = 0;
visitExplodedTupleValue(
inst->getDest(),
[&](SILValue value, std::optional<unsigned> index) -> SILValue {
if (!index) {
SILValue elt = inst->getElement(count);
if (elt->getType().isAddress()) {
builder.createCopyAddr(inst->getLoc(), elt, value, IsTake,
inst->isInitializationOfDest());
} else {
builder.emitStoreValueOperation(
inst->getLoc(), elt, value,
bool(inst->isInitializationOfDest())
? StoreOwnershipQualifier::Init
: StoreOwnershipQualifier::Assign);
}
++count;
return value;
}
auto *teai =
builder.createTupleElementAddr(inst->getLoc(), value, *index);
return teai;
});
inst->eraseFromParent();
deletedInst = true;
}
}
if (deletedInst)
invalidateAnalysis(SILAnalysis::InvalidationKind::Instructions);
}
};
} // end anonymous namespace
SILTransform *swift::createLowerTupleAddrConstructor() {
return new LowerTupleAddrConstructorTransform();
}
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