This introduces a secondary flag `-sysroot` for the non-Darwin targets,
primarily Unicies. The intention here is to support a split `-sdk`,
`-sysroot` model where the `-sdk` parameter provides the Swift "SDK"
which augments the native platform's C sysroot which is indicated as
`-sysroot`. For the case of Android, this would allow us to provide a
path to the NDK sysroot and the Swift SDK allowing us to cross-compile
Android binaries from Windows.
There was a bunch of logic to lazily populate replacement types
corresponding to reducible generic parameters. This didn't seem
to have a clear purpose so let's remove it.
This patch adds support for MCCAS when a cache hit is encountered when
trying to replay a compilation, and uses the MCCAS serialization code
to materialize the object file that is the main output of the
compilation.
There are a few spots in `ActorIsolationRequest` that produce
`unspecified` isolation with `preconcurrency` bit set and diagnostics
rely on that to make downgrade decisions in Swift 5 mode.
This reverts commit 0097ef68a6.
Fix few issues from previous implementation from explicit module build
with macros and accurate macro dependency scanning in
https://github.com/swiftlang/swift/pull/73421.
First, there is a crash when propagating the macro dependencies. It
turns out that the current macro plugin implementation doesn't need the
downstream users to know about the plugin search path from the upstream
dependencies.
Secondly, fix a bug that the swiftinterface that has macro usage won't
build because the build command doesn't inherit the plugin search path
option.
Finally, add JSON output for macro dependencies so it is easier to
debug the macro dependencies.
rdar://131214106
An `@_unsafeInheritExecutor` function is unsafe because it doesn't
really "inherit" the executor, it just avoids immediately hopping off
the executor. That means that using `#isolation` within such a
function is fundamentally broken. Ban the use of `#isolation` within
such a function, providing a Fix-It that removes the
`@_unsafeInheritExecutor` attribute and adds a defaulted parameter
isolation: (any Actor)? = #isolation
instead. That's the real, safe pattern that want going forward.
We did say it was unsafe, after all. Part of rdar://131151376.
It is no longer necessary to produce `.swiftinterface` files the support older
compilers that lack support for the NoncopyableGenerics feature. Cleaning this
up makes the stdlib `.swiftinterface` far more readable.
Add support for swift style diagnostics for swift caching. This includes
pre-populate the GeneratedSourceInfo with macro name so it doesn't need
to infer from an ASTNode, which the caching mechanism cannot preserve.
Still leave the default diagnostic style to LLVM style because replaying
swift style diagnostics is still very slow and including parsing source
file using swift-syntax.
rdar://128615572
