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f3ff561c6f
This is phase-1 of switching from llvm::Optional to std::optional in the
next rebranch. llvm::Optional was removed from upstream LLVM, so we need
to migrate off rather soon. On Darwin, std::optional, and llvm::Optional
have the same layout, so we don't need to be as concerned about ABI
beyond the name mangling. `llvm::Optional` is only returned from one
function in
```
getStandardTypeSubst(StringRef TypeName,
bool allowConcurrencyManglings);
```
It's the return value, so it should not impact the mangling of the
function, and the layout is the same as `std::optional`, so it should be
mostly okay. This function doesn't appear to have users, and the ABI was
already broken 2 years ago for concurrency and no one seemed to notice
so this should be "okay".
I'm doing the migration incrementally so that folks working on main can
cherry-pick back to the release/5.9 branch. Once 5.9 is done and locked
away, then we can go through and finish the replacement. Since `None`
and `Optional` show up in contexts where they are not `llvm::None` and
`llvm::Optional`, I'm preparing the work now by going through and
removing the namespace unwrapping and making the `llvm` namespace
explicit. This should make it fairly mechanical to go through and
replace llvm::Optional with std::optional, and llvm::None with
std::nullopt. It's also a change that can be brought onto the
release/5.9 with minimal impact. This should be an NFC change.
92 lines
3.3 KiB
C++
92 lines
3.3 KiB
C++
//===--------------- MockingFineGrainedDependencyGraphs.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 - 2020 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 "MockingFineGrainedDependencyGraphs.h"
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#include "swift/AST/AbstractSourceFileDepGraphFactory.h"
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#include "swift/AST/DiagnosticEngine.h"
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#include "swift/Basic/ReferenceDependencyKeys.h"
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#include "swift/Basic/SourceManager.h"
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#include "llvm/Support/VirtualOutputBackends.h"
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#include <array>
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#include <unordered_map>
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using namespace swift;
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using namespace fine_grained_dependencies;
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using namespace mocking_fine_grained_dependency_graphs;
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void mocking_fine_grained_dependency_graphs::simulateLoad(
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ModuleDepGraph &g, const driver::Job *cmd,
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const DependencyDescriptions &dependencyDescriptions,
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llvm::Optional<Fingerprint> interfaceHashIfNonEmpty,
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const bool hadCompilationError) {
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const auto changes = getChangesForSimulatedLoad(
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g, cmd, dependencyDescriptions, interfaceHashIfNonEmpty,
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hadCompilationError);
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assert(changes && "simulated load should always succeed");
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}
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ModuleDepGraph::Changes
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mocking_fine_grained_dependency_graphs::getChangesForSimulatedLoad(
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ModuleDepGraph &g, const driver::Job *cmd,
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const DependencyDescriptions &dependencyDescriptions,
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llvm::Optional<Fingerprint> interfaceHashIfNonEmpty,
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const bool hadCompilationError) {
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auto swiftDeps =
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cmd->getOutput().getAdditionalOutputForType(file_types::TY_SwiftDeps).str();
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auto swiftDepsFingerprint =
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swift::mockFingerprintFromString(swiftDeps).value();
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auto interfaceHash = interfaceHashIfNonEmpty.value_or(swiftDepsFingerprint);
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SourceManager sm;
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DiagnosticEngine diags(sm);
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llvm::vfs::OnDiskOutputBackend backend;
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auto sfdg =
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UnitTestSourceFileDepGraphFactory(
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hadCompilationError, swiftDeps, interfaceHash,
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g.emitFineGrainedDependencyDotFileAfterEveryImport,
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dependencyDescriptions, diags, backend)
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.construct();
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return g.loadFromSourceFileDepGraph(cmd, sfdg, diags);
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}
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std::vector<const driver::Job *>
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mocking_fine_grained_dependency_graphs::simulateReload(
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ModuleDepGraph &g, const driver::Job *cmd,
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const DependencyDescriptions &dependencyDescriptions,
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llvm::Optional<Fingerprint> interfaceHashIfNonEmpty,
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const bool hadCompilationError) {
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const auto changedNodes = getChangesForSimulatedLoad(
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g, cmd, dependencyDescriptions, interfaceHashIfNonEmpty,
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hadCompilationError);
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if (!changedNodes)
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return g.getAllJobs();
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return g.findJobsToRecompileWhenNodesChange(changedNodes.value());
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}
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LLVM_ATTRIBUTE_UNUSED
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std::vector<const driver::Job *>
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mocking_fine_grained_dependency_graphs::printJobsForDebugging(
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const std::vector<const driver::Job *> &jobs) {
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llvm::errs() << "\nprintForDebugging: ";
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for (auto *j : jobs) {
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const auto swiftDeps =
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j->getOutput().getAdditionalOutputForType(file_types::TY_SwiftDeps);
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assert(!swiftDeps.empty());
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llvm::errs() << "job" << swiftDeps << " ";
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}
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llvm::errs() << "\n";
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return jobs;
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}
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