Changes:
* Terminate all namespaces with the correct closing comment.
* Make sure argument names in comments match the corresponding parameter name.
* Remove redundant get() calls on smart pointers.
* Prefer using "override" or "final" instead of "virtual". Remove "virtual" where appropriate.
The Swift compiler uses files with an extension of ".swiftdeps" to store
information about cross-file dependencies. These files are read in at the
start of compilation to compute a dependency graph, and updated as compilation
proceeds. However, because these files are updated on every build, an
issue with dependency analysis is hard to reproduce—the inputs have been
lost.
Address this by renaming swiftdeps files that are about to be
overwritten, to '.swiftdeps~'. This preserves dependency information
from the most recent compilation (but no further back).
This flag switches the "effective language version" of the compiler,
at least to any version supported (as of this change: "3" or "3.0").
At the moment nothing uses it except the language version build
configuration statements (#if swift(...)) and various other places
that report, encode, or otherwise check version numbers.
In the future, it's intended as scaffolding for backwards compatibility.
Fixes SR-2582
Define compilation record (.swiftdeps) top-level keys, as well as string
identifiers used in compilation record files (like "!dirty" and "!private"), in
a single location. NFC.
Otherwise we get into a situation like this:
1. Change made to the interface of file A.swift that also causes an
error in A.swift.
2. Fixing the error in A.swift does not affect A.swift's interface.
3. File B.swift that depends on A.swift is not rebuilt, since the most
recent change to A.swift did not change its interface.
To fix this, mark downstream files as needing to be rebuilt even when
a compilation job fails with errors. Additionally, attempt to be extra
conservative when there's a crash.
rdar://problem/25405605
Some modifications for the ms-extension option of the clang.exe in the Visual Studio 2015 development environment
This patch is only for swiftc.exe. I used the library set of Visual Studio 2015 Update 1 and recent version of swift-clang as the compiler. If you are using the real MSVC compiler, more patch might be required.
This is only the driver side of the work; the frontend doesn't understand
this new -output-filelist option yet. Next commit.
More https://bugs.swift.org/browse/SR-280.
This is simply a newline-separated list of files, matching the format
from Darwin ld's -filelist option.
Part 2 of https://bugs.swift.org/browse/SR-280.
Generate frontend commands with -filelist in them. This isn't actually
implemented yet, but we can start testing at this point.
Part 1 of https://bugs.swift.org/browse/SR-280.
Previously jobs had to grovel this information out of the raw argument
list, which dropped the types we had inferred on input files. This
makes things more consistent across the compiler, though arguably we
should be able to designate "primary" and "non-primary" inputs on a
per-action basis rather than resorting to "global" state.
Use this new information to stop passing object file inputs to the
Swift frontend, fixing rdar://problem/23213785.
The list wouldn't have to live on the Compilation, but I'm going to use
it to fix SR-280 / rdar://problem/23878192 as well.
Implementing this for the general case either requires duplicating the
existing environment, or modifying TaskQueue to support "extra environment"
settings. Since we don't actually have any use cases for this yet, I'm
leaving it unimplemented for now.
Rest of rdar://problem/23588774
For now, just error out at the end of the build if something was modified,
forcing a rebuild. The incremental logic should get that rebuild right.
We could automatically restart the rebuild, but that could lead to infinite
compilation if the user continues to edit an important file.
DerivedArgList has a pointer to the InputArgList it came from, so we can't
just std::move it around. Put most of the driver back the way it was, with
small changes to clarify ownership.
Swift SVN r31811
The "Tool" abstraction wasn't buying us enough to deserve the added
complexity. Now a ToolChain turns Actions into Jobs, and every helper
tool is searched for relative to Swift first. Much simpler.
Swift SVN r31563
This was just a wrapper around SmallVector that optionally owned the Job pointers
in it. Now that all Jobs are owned by the Compilation, we don't have to worry
about this any more.
No functionality change.
Swift SVN r29668
Previously, we would process all of a job's dependencies separately before
even scheduling it, and we wouldn't interleave dependencies from different
jobs. This meant (a) more overhead than necessary, and more importantly
(b) -embed-bitcode builds weren't being parallelized.
rdar://problem/21129029
Swift SVN r29665
...not if it's newer than its output .o file. This handles cases where the
object file is generated too quickly (rdar://problem/19404140) or when you
revert to a previous version of the file, mtime intact (rdar://problem/19720146).
There's a lot of test churn here; the only real new test is the backwards
mtime update in one-way.swift.
Swift SVN r29584
No test case; this is apparently hitting Enrico but not reproducing in
any obvious way for me. Nevertheless, it /could/ be an issue, so let's be
conservative.
rdar://problem/20402875
Swift SVN r26882
This is instead of verifying that it's 0 after running a round.
The previous way would cause it to assert if it the blocking task
was at a higher level of the stack than the current level, and
thus in a different TaskQueue. This way we just verify that
no new tasks are left over.
Swift SVN r26501
If a build fails in the middle, we try to determine which other files need
to be rebuilt. However, we may not be able to do that as precisely if the
dependency graph itself is incomplete. In this case, just be conservative
and assume we need to rebuild everything. We may want to revisit this in
the future with a more-aggressive-but-still-safe bound.
This was manifesting itself as an assertion failure, trying to pull
information from the graph that wasn't there.
rdar://problem/19640006
Swift SVN r24823
