Update swift cache key computation mechanism from one cache key per
output, to one cache key per primary input file (for all outputs that
associated with that input).
The new schema allows fewer cache lookups while still preserving most of
the flexibility for batch mode and incremental mode.
[Explicit Module Builds] Restore prior behavior of consuming `.h` dependencies of binary module dependencies directly, instead of attempting to load their PCH
* BridgedString for ASTGen -> C++ string returnings
* Null terminated C-strings for C++ -> ASTGen string arguments
* UnsafeMutableRawPointer for C++ -> ASTGen diagnostic engine arguments
We only record these dependencies in CAS mode, because we require explicit PCH tasks to be produced for imported header of binary module dependencies. In the meantime, in non-CAS mode loading clients will consume the `.h` files encoded in the `.swiftmodules` directly.
Followup changes to SwiftDriver will enable explicit PCH compilation of such dependenceis, but for the time being restore prior behavior for non-CAS explicit module builds.
Resolves rdar://116006619
Always check for the flag before evaluating `TypeCheckSourceFileRequest`,
rather than just in `performSema()`. This ensures later compilation stages that
re-request eager typechecking honor the flag.
Rename -experimental-serialize-external-decls only to
-experimental-skip-non-exportable-decls in preparation for the flag being used
to influence more than just serialization.
Resolves rdar://116771543
The feature InternalImportsByDefault makes imports default to internal instead
of public. Applying the Swift 6 behavior of SE-0409 in Swift 5.
Let's use only that flag to track the Swift 6 behavior as well instead
of separately checking for the language version.
This change adds the following options to allow for greater control over the compiler's autolinking directive use:
- '-disable-autolink-library': equivalent to an existing '-disable-autolink-framework', this option takes a library name as input and ensures the compiler does not produce an autolink directive '-l<library-name>'.
- '-disable-autolink-frameworks': a boolean disable flag which turns off insertion of autolinking directives for all imported frameworks (of the type '-framework <framework-name>')
- '-disable-all-autolinking': a boolean disable flag which turns off insertion of *any* autolinking directives.
Resolves rdar://100859983
An "API descriptor" file is JSON describing the externally accessible symbols
of a module and metadata associated with those symbols like availability and
SPI status. This output was previously only generated by the
`swift-api-extract` alias of `swift-frontend`, which is desgined to take an
already built module as input. Post-processing a built module to extract this
information is inefficient because the module and the module's dependencies
need to be deserialized in order to visit the entire AST. We can generate this
output more efficiently as a supplementary output of the -emit-module job that
originally produced the module (since the AST is already available in-memory).
The -emit-api-descriptor flag can be used to request this output.
This change lays the groundwork by introducing frontend flags. Follow up
changes are needed to make API descriptor emission during -emit-module
functional.
Part of rdar://110916764.
For whatever reason, using standard headers in modules imported from
Swift code (i.e. depending on Darwin overlay) is no longer an issue.
rdar://115438609
Conflict in CAS options when
`std::vector<std::string> CacheReplayPrefixMap;` was added.
Conflicts:
include/swift/Frontend/FrontendOptions.h
Resolution: Take both
In C++20, the compiler will synthesize a version of the operator
with its arguments reversed to ease commutativity. This reversed
version is ambiguous with the hand-written operator when the
argument is const but `this` isn't.
Conflicts:
- `CMakeLists.txt` caused by the extra `-D` added in rebranch to
reduce the number of deprecation warnings.
- `lib/Frontend/PrintingDiagnosticConsumer.cpp` caused by the removal
of one of the `#if SWIFT_SWIFT_PARSER` on rebranch (probably should
have been done on main).
Using `-Rmodule-api-import` the compiler prints a remark about the
import bringing in every decl used in public function signatures or
inlinable code. It also remarks on the source of conformances where they
are used and the source of typealias underlying types.
Teach CachedDiagnosticsProcessor to replay diagnostics for all consumers
with a different path using a path prefix map. This allows diagnostics
to be replayed for the actual path on disk after the scanner
canonicalized the path for compilation.
Allow DependencyScanner to canonicalize path using a prefix map. When
option `-scanner-prefix-map` option is used, dependency scanner will
remap all the input paths in following:
* all the paths in the CAS file system or clang include tree
* all the paths related to input on the command-line returned by scanner
This allows all the input paths to be canonicalized so cache key can be
computed reguardless of the exact on disk path.
The sourceFile field is not remapped so build system can track the exact
file as on the local file system.
