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170ba67bd3
In the next commit, I am modifying the move only checker to ensure that we always error when partially invalidating. While doing this I discovered that these copies were getting in the way of emitting good diagnostics in that case.
79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
//===--- MoveOnlyTempAllocationFromLetTester.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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///
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/// \file A simple tester for the utility function
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/// eliminateTemporaryAllocationsFromLet that allows us to write separate SIL
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/// test cases for the utility.
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///
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "sil-move-only-checker"
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#include "MoveOnlyAddressCheckerUtils.h"
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#include "MoveOnlyDiagnostics.h"
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#include "MoveOnlyUtils.h"
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#include "swift/SILOptimizer/PassManager/Passes.h"
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#include "swift/SILOptimizer/PassManager/Transforms.h"
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using namespace swift;
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using namespace swift::siloptimizer;
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namespace {
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struct MoveOnlyTempAllocationFromLetTester : SILFunctionTransform {
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void run() override {
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auto *fn = getFunction();
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// Only run this pass if the move only language feature is enabled.
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if (!fn->getASTContext().supportsMoveOnlyTypes())
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return;
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// Don't rerun diagnostics on deserialized functions.
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if (getFunction()->wasDeserializedCanonical())
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return;
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assert(fn->getModule().getStage() == SILStage::Raw &&
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"Should only run on Raw SIL");
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LLVM_DEBUG(llvm::dbgs()
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<< "===> MoveOnlyTempAllocationFromLetTester. Visiting: "
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<< fn->getName() << '\n');
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SmallSetVector<MarkMustCheckInst *, 32> moveIntroducersToProcess;
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DiagnosticEmitter diagnosticEmitter(getFunction());
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unsigned diagCount = diagnosticEmitter.getDiagnosticCount();
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searchForCandidateAddressMarkMustChecks(
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getFunction(), moveIntroducersToProcess, diagnosticEmitter);
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// Return early if we emitted a diagnostic.
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if (diagCount != diagnosticEmitter.getDiagnosticCount())
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return;
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bool madeChange = false;
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while (!moveIntroducersToProcess.empty()) {
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auto *next = moveIntroducersToProcess.pop_back_val();
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madeChange |= eliminateTemporaryAllocationsFromLet(next);
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}
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if (madeChange)
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invalidateAnalysis(SILAnalysis::InvalidationKind::Instructions);
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}
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};
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} // namespace
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SILTransform *swift::createMoveOnlyTempAllocationFromLetTester() {
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return new MoveOnlyTempAllocationFromLetTester();
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}
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