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//===--- MoveOnlyObjectCheckerTester.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/DiagnosticsSIL.h"
#include "swift/AST/TypeCheckRequests.h"
#include "swift/Basic/Defer.h"
#include "swift/Basic/FrozenMultiMap.h"
#include "swift/Basic/STLExtras.h"
#include "swift/SIL/BasicBlockBits.h"
#include "swift/SIL/BasicBlockUtils.h"
#include "swift/SIL/DebugUtils.h"
#include "swift/SIL/FieldSensitivePrunedLiveness.h"
#include "swift/SIL/InstructionUtils.h"
#include "swift/SIL/NodeBits.h"
#include "swift/SIL/OwnershipUtils.h"
#include "swift/SIL/PostOrder.h"
#include "swift/SIL/PrunedLiveness.h"
#include "swift/SIL/SILArgument.h"
#include "swift/SIL/SILBuilder.h"
#include "swift/SIL/SILFunction.h"
#include "swift/SIL/SILInstruction.h"
#include "swift/SIL/SILLocation.h"
#include "swift/SIL/SILUndef.h"
#include "swift/SIL/SILValue.h"
#include "swift/SIL/StackList.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/Analysis/PostOrderAnalysis.h"
#include "swift/SILOptimizer/PassManager/Transforms.h"
#include "swift/SILOptimizer/Utils/CFGOptUtils.h"
#include "swift/SILOptimizer/Utils/CanonicalizeOSSALifetime.h"
#include "swift/SILOptimizer/Utils/InstructionDeleter.h"
#include "swift/SILOptimizer/Utils/SILSSAUpdater.h"
#include "clang/AST/DeclTemplate.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/IntervalMap.h"
#include "llvm/ADT/PointerIntPair.h"
#include "llvm/ADT/PointerUnion.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallBitVector.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/RecyclingAllocator.h"
#include "MoveOnlyBorrowToDestructureUtils.h"
#include "MoveOnlyDiagnostics.h"
#include "MoveOnlyObjectCheckerUtils.h"
#include "MoveOnlyUtils.h"
using namespace swift;
using namespace swift::siloptimizer;
//===----------------------------------------------------------------------===//
// MARK: Top Level Entrypoint
//===----------------------------------------------------------------------===//
namespace {
class MoveOnlyObjectCheckerTesterPass : 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 Object Checker. Visiting: "
<< fn->getName() << '\n');
auto *dominanceAnalysis = getAnalysis<DominanceAnalysis>();
DominanceInfo *domTree = dominanceAnalysis->get(fn);
auto *poa = getAnalysis<PostOrderAnalysis>();
DiagnosticEmitter diagnosticEmitter(fn);
borrowtodestructure::IntervalMapAllocator allocator;
unsigned diagCount = diagnosticEmitter.getDiagnosticCount();
llvm::SmallSetVector<MarkUnresolvedNonCopyableValueInst *, 32>
moveIntroducersToProcess;
bool madeChange =
searchForCandidateObjectMarkUnresolvedNonCopyableValueInsts(
fn, moveIntroducersToProcess, diagnosticEmitter);
LLVM_DEBUG(llvm::dbgs()
<< "Emitting diagnostic when checking for mark must check inst: "
<< (diagCount != diagnosticEmitter.getDiagnosticCount() ? "yes"
: "no")
<< '\n');
if (moveIntroducersToProcess.empty()) {
LLVM_DEBUG(llvm::dbgs()
<< "No move introducers found?! Returning early?!\n");
} else {
diagCount = diagnosticEmitter.getDiagnosticCount();
MoveOnlyObjectChecker checker{diagnosticEmitter, domTree, poa, allocator};
madeChange |= checker.check(moveIntroducersToProcess);
}
if (diagCount != diagnosticEmitter.getDiagnosticCount()) {
emitCheckerMissedCopyOfNonCopyableTypeErrors(getFunction(),
diagnosticEmitter);
}
madeChange |=
cleanupNonCopyableCopiesAfterEmittingDiagnostic(getFunction());
if (madeChange) {
invalidateAnalysis(SILAnalysis::InvalidationKind::Instructions);
}
}
};
} // anonymous namespace
SILTransform *swift::createMoveOnlyObjectChecker() {
return new MoveOnlyObjectCheckerTesterPass();
}
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