mirror of
https://github.com/apple/swift.git
synced 2025-12-21 12:14:44 +01:00
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 ---------------===//
|
|
//
|
|
// This source file is part of the Swift.org open source project
|
|
//
|
|
// Copyright (c) 2014 - 2020 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 "MockingFineGrainedDependencyGraphs.h"
|
|
#include "swift/AST/AbstractSourceFileDepGraphFactory.h"
|
|
#include "swift/AST/DiagnosticEngine.h"
|
|
#include "swift/Basic/ReferenceDependencyKeys.h"
|
|
#include "swift/Basic/SourceManager.h"
|
|
#include "llvm/Support/VirtualOutputBackends.h"
|
|
|
|
#include <array>
|
|
#include <unordered_map>
|
|
|
|
using namespace swift;
|
|
using namespace fine_grained_dependencies;
|
|
using namespace mocking_fine_grained_dependency_graphs;
|
|
|
|
void mocking_fine_grained_dependency_graphs::simulateLoad(
|
|
ModuleDepGraph &g, const driver::Job *cmd,
|
|
const DependencyDescriptions &dependencyDescriptions,
|
|
llvm::Optional<Fingerprint> interfaceHashIfNonEmpty,
|
|
const bool hadCompilationError) {
|
|
const auto changes = getChangesForSimulatedLoad(
|
|
g, cmd, dependencyDescriptions, interfaceHashIfNonEmpty,
|
|
hadCompilationError);
|
|
assert(changes && "simulated load should always succeed");
|
|
}
|
|
|
|
ModuleDepGraph::Changes
|
|
mocking_fine_grained_dependency_graphs::getChangesForSimulatedLoad(
|
|
ModuleDepGraph &g, const driver::Job *cmd,
|
|
const DependencyDescriptions &dependencyDescriptions,
|
|
llvm::Optional<Fingerprint> interfaceHashIfNonEmpty,
|
|
const bool hadCompilationError) {
|
|
auto swiftDeps =
|
|
cmd->getOutput().getAdditionalOutputForType(file_types::TY_SwiftDeps).str();
|
|
auto swiftDepsFingerprint =
|
|
swift::mockFingerprintFromString(swiftDeps).value();
|
|
auto interfaceHash = interfaceHashIfNonEmpty.value_or(swiftDepsFingerprint);
|
|
|
|
SourceManager sm;
|
|
DiagnosticEngine diags(sm);
|
|
llvm::vfs::OnDiskOutputBackend backend;
|
|
|
|
auto sfdg =
|
|
UnitTestSourceFileDepGraphFactory(
|
|
hadCompilationError, swiftDeps, interfaceHash,
|
|
g.emitFineGrainedDependencyDotFileAfterEveryImport,
|
|
dependencyDescriptions, diags, backend)
|
|
.construct();
|
|
|
|
return g.loadFromSourceFileDepGraph(cmd, sfdg, diags);
|
|
}
|
|
|
|
std::vector<const driver::Job *>
|
|
mocking_fine_grained_dependency_graphs::simulateReload(
|
|
ModuleDepGraph &g, const driver::Job *cmd,
|
|
const DependencyDescriptions &dependencyDescriptions,
|
|
llvm::Optional<Fingerprint> interfaceHashIfNonEmpty,
|
|
const bool hadCompilationError) {
|
|
const auto changedNodes = getChangesForSimulatedLoad(
|
|
g, cmd, dependencyDescriptions, interfaceHashIfNonEmpty,
|
|
hadCompilationError);
|
|
if (!changedNodes)
|
|
return g.getAllJobs();
|
|
return g.findJobsToRecompileWhenNodesChange(changedNodes.value());
|
|
}
|
|
|
|
LLVM_ATTRIBUTE_UNUSED
|
|
std::vector<const driver::Job *>
|
|
mocking_fine_grained_dependency_graphs::printJobsForDebugging(
|
|
const std::vector<const driver::Job *> &jobs) {
|
|
llvm::errs() << "\nprintForDebugging: ";
|
|
for (auto *j : jobs) {
|
|
const auto swiftDeps =
|
|
j->getOutput().getAdditionalOutputForType(file_types::TY_SwiftDeps);
|
|
assert(!swiftDeps.empty());
|
|
llvm::errs() << "job" << swiftDeps << " ";
|
|
}
|
|
llvm::errs() << "\n";
|
|
return jobs;
|
|
}
|