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//===--- MoveOnlyAddressCheckerTester.cpp ---------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2022 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
//
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "sil-move-only-checker"
#include "swift/AST/AccessScope.h"
#include "swift/AST/DiagnosticEngine.h"
#include "swift/AST/DiagnosticsSIL.h"
#include "swift/Basic/Debug.h"
#include "swift/Basic/Defer.h"
#include "swift/Basic/FrozenMultiMap.h"
#include "swift/Basic/SmallBitVector.h"
#include "swift/SIL/ApplySite.h"
#include "swift/SIL/BasicBlockBits.h"
#include "swift/SIL/BasicBlockData.h"
#include "swift/SIL/BasicBlockDatastructures.h"
#include "swift/SIL/BasicBlockUtils.h"
#include "swift/SIL/Consumption.h"
#include "swift/SIL/DebugUtils.h"
#include "swift/SIL/FieldSensitivePrunedLiveness.h"
#include "swift/SIL/InstructionUtils.h"
#include "swift/SIL/MemAccessUtils.h"
#include "swift/SIL/OwnershipUtils.h"
#include "swift/SIL/PrunedLiveness.h"
#include "swift/SIL/SILArgument.h"
#include "swift/SIL/SILArgumentConvention.h"
#include "swift/SIL/SILBasicBlock.h"
#include "swift/SIL/SILBuilder.h"
#include "swift/SIL/SILFunction.h"
#include "swift/SIL/SILInstruction.h"
#include "swift/SIL/SILUndef.h"
#include "swift/SIL/SILValue.h"
#include "swift/SILOptimizer/Analysis/ClosureScope.h"
#include "swift/SILOptimizer/Analysis/DeadEndBlocksAnalysis.h"
#include "swift/SILOptimizer/Analysis/DominanceAnalysis.h"
#include "swift/SILOptimizer/Analysis/NonLocalAccessBlockAnalysis.h"
#include "swift/SILOptimizer/PassManager/Transforms.h"
#include "swift/SILOptimizer/Utils/CanonicalizeOSSALifetime.h"
#include "swift/SILOptimizer/Utils/InstructionDeleter.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/MapVector.h"
#include "llvm/ADT/PointerIntPair.h"
#include "llvm/ADT/PointerUnion.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallBitVector.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "MoveOnlyAddressCheckerUtils.h"
#include "MoveOnlyBorrowToDestructureUtils.h"
#include "MoveOnlyDiagnostics.h"
#include "MoveOnlyObjectCheckerUtils.h"
#include "MoveOnlyUtils.h"
#include <utility>
using namespace swift;
using namespace swift::siloptimizer;
//===----------------------------------------------------------------------===//
// MARK: Top Level Entrypoint
//===----------------------------------------------------------------------===//
namespace {
class MoveOnlyAddressCheckerTesterPass : public SILFunctionTransform {
void run() override {
auto *fn = getFunction();
// Don't rerun diagnostics on deserialized functions.
if (getFunction()->wasDeserializedCanonical())
return;
assert(fn->getModule().getStage() == SILStage::Raw &&
"Should only run on Raw SIL");
LLVM_DEBUG(llvm::dbgs() << "===> MoveOnly Addr Checker. Visiting: "
<< fn->getName() << '\n');
auto *dominanceAnalysis = getAnalysis<DominanceAnalysis>();
DominanceInfo *domTree = dominanceAnalysis->get(fn);
auto *poa = getAnalysis<PostOrderAnalysis>();
auto *deadEndBlocksAnalysis = getAnalysis<DeadEndBlocksAnalysis>();
DiagnosticEmitter diagnosticEmitter(fn);
llvm::SmallSetVector<MarkUnresolvedNonCopyableValueInst *, 32>
moveIntroducersToProcess;
searchForCandidateAddressMarkUnresolvedNonCopyableValueInsts(
fn, getAnalysis<PostOrderAnalysis>(), moveIntroducersToProcess,
diagnosticEmitter);
LLVM_DEBUG(llvm::dbgs()
<< "Emitting diagnostic when checking for mark must check inst: "
<< (diagnosticEmitter.getDiagnosticCount() ? "yes" : "no")
<< '\n');
bool madeChange = false;
if (moveIntroducersToProcess.empty()) {
LLVM_DEBUG(llvm::dbgs() << "No move introducers found?!\n");
} else {
borrowtodestructure::IntervalMapAllocator allocator;
MoveOnlyAddressChecker checker{getFunction(), diagnosticEmitter,
allocator, domTree,
poa, deadEndBlocksAnalysis};
madeChange = checker.completeLifetimes();
madeChange |= checker.check(moveIntroducersToProcess);
}
// If we did not emit any diagnostics, emit a diagnostic if we missed any
// copies.
if (!diagnosticEmitter.emittedDiagnostic()) {
emitCheckerMissedCopyOfNonCopyableTypeErrors(getFunction(),
diagnosticEmitter);
}
// Then cleanup any copies we left behind for either reason and emit an
// error.
madeChange |=
cleanupNonCopyableCopiesAfterEmittingDiagnostic(getFunction());
if (madeChange) {
invalidateAnalysis(SILAnalysis::InvalidationKind::Instructions);
}
}
};
} // anonymous namespace
SILTransform *swift::createMoveOnlyAddressChecker() {
return new MoveOnlyAddressCheckerTesterPass();
}
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