Commit Graph

3014 Commits

Author SHA1 Message Date
Ben Langmuir ec8c975214 Don't build modules with (submodules with) missing headers
Unless they are in submodules that aren't available anyway, due to
requirements not being met.  Also, mark children as unavailable when the
parent is.

llvm-svn: 206664
2014-04-18 22:07:31 +00:00
Ben Langmuir 532fdc0d4f Don't read CompilerInstance fields that don't exist in ASTUnit
When transferring data from a CompilerInstance in an error path we need
to consider cases where the various fields are uninitialized.

llvm-svn: 206644
2014-04-18 20:39:48 +00:00
Justin Bogner 25463f1577 Teach users of OnDiskHashTable to define hash_value and offset types
This paves the way to making OnDiskHashTable work with hashes that are
not 32 bits wide and to making OnDiskHashTable work very large hash
tables. The LLVM change to use these types is upcoming.

llvm-svn: 206640
2014-04-18 20:27:24 +00:00
Justin Bogner bb094f0669 Remove OnDiskHashTable.h, since it's been moved to llvm
llvm-svn: 206637
2014-04-18 19:57:06 +00:00
Reid Kleckner 6f6e76dfe0 Revert "Move -fms-extensions predefined macros into InitPreprocessor"
This reverts commit r206413.

This was proposed before, but it's not clear if this is really a good
idea:
http://reviews.llvm.org/D3034

llvm-svn: 206415
2014-04-16 20:10:16 +00:00
Reid Kleckner ae4759df00 Move -fms-extensions predefined macros into InitPreprocessor
If someone on Linux asks for -fms-extensions, there's no reason not to
define the feature test macros that MSVC defines.

llvm-svn: 206413
2014-04-16 19:47:06 +00:00
Diego Novillo 829b170048 Add support for optimization reports.
Summary:
This patch adds a new flag -Rpass=. The flag indicates the name
of the optimization pass that should emit remarks stating when it
made a transformation to the code.

This implements the design I proposed in:

https://docs.google.com/document/d/1FYUatSjZZO-zmFBxjOiuOzAy9mhHA8hqdvklZv68WuQ/edit?usp=sharing

Other changes:
- Add DiagnosticIDs::isRemark(). Use it in printDiagnosticOptions to
  print "-R" instead of "-W" in the diagnostic message.

- In BackendConsumer::OptimizationRemarkHandler, get a SourceLocation
  object out of the file name, line and column number. Use that location
  in the call to Diags.Report().

- When -Rpass is used without debug info a note is emitted alerting
  the user that they need to use -gline-tables-only -gcolumn-info to
  get this information.

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D3226

llvm-svn: 206401
2014-04-16 16:54:24 +00:00
Ben Langmuir 8832c066a2 Honour -ivfsoverlay in ASTUnit to match clang
This allows code indexing, etc. to use the VFS in the same way as the
compiler.

llvm-svn: 206309
2014-04-15 18:16:25 +00:00
Ben Langmuir 4f5212a60e Add module name and module map file to -module-file-info
llvm-svn: 206217
2014-04-14 22:12:44 +00:00
Ben Langmuir beee15e721 Allow multiple modules with the same name to coexist in the module cache
To differentiate between two modules with the same name, we will
consider the path the module map file that they are defined by* part of
the ‘key’ for looking up the precompiled module (pcm file).
Specifically, this patch renames the precompiled module (pcm) files from
  cache-path/<module hash>/Foo.pcm
to
  cache-path/<module hash>/Foo-<hash of module map path>.pcm

In addition, I’ve taught the ASTReader to re-resolve the names of
imported modules during module loading so that if the header search
context changes between when a module was originally built and when it
is loaded we can rebuild it if necessary.  For example, if module A
imports module B

first time:
clang -I /path/to/A -I /path/to/B ...

second time:
clang -I /path/to/A -I /different/path/to/B ...

will now rebuild A as expected.

* in the case of inferred modules, we use the module map file that
allowed the inference, not the __inferred_module.map file, since the
inferred file path is the same for every inferred module.

llvm-svn: 206201
2014-04-14 18:00:01 +00:00
Daniel Jasper 962b38e4f3 Add -fmodules-strict-decluse to check that all headers are in modules
Review: http://reviews.llvm.org/D3335
llvm-svn: 206027
2014-04-11 11:47:45 +00:00
Richard Smith 50996ce1e3 If a header is explicitly included in module A, and excluded from an umbrella
directory in module B, don't include it in module B!

llvm-svn: 205762
2014-04-08 13:13:04 +00:00
Reid Kleckner 0dc06b9a3d -fms-extensions: Don't define __PRETTY_FUNCTION__ to __FUNCTION__
This reverts r90596 from 2009. Having this macro definition makes Clang
strictly less useful with -fms-extensions.

llvm-svn: 205729
2014-04-07 19:27:58 +00:00
Argyrios Kyrtzidis 4382fe74bb [Frontend] If the module file lock owner have died, try to get the lock again. Needs llvm r205683.
llvm-svn: 205684
2014-04-06 03:21:44 +00:00
Tim Northover a2ee433c8d ARM64: initial clang support commit.
This adds Clang support for the ARM64 backend. There are definitely
still some rough edges, so please bring up any issues you see with
this patch.

As with the LLVM commit though, we think it'll be more useful for
merging with AArch64 from within the tree.

llvm-svn: 205100
2014-03-29 15:09:45 +00:00
Justin Bogner e1c147c3cf Reapply "OnDiskHashTable: Use EndianStream.h to write little endian ostreams"
Committed this by accident before it was done last time.

Original message:

    Rather than rolling our own functions to write little endian data
    to an ostream, we can use the support in llvm's EndianStream.h.

    No functional change.

llvm-svn: 205061
2014-03-28 22:03:19 +00:00
Justin Bogner d42773bcc8 Revert "OnDiskHashTable: Use EndianStream.h to write little endian ostreams"
This reverts commit r205044.

llvm-svn: 205047
2014-03-28 20:32:11 +00:00
Justin Bogner a06321efdd OnDiskHashTable: Use EndianStream.h to write little endian ostreams
Rather than rolling our own functions to write little endian data to
an ostream, we can use the support in llvm's EndianStream.h.

No functional change.

llvm-svn: 205044
2014-03-28 20:03:54 +00:00
Saleem Abdulrasool 377066a5f5 Use the new Windows environment for target detection
This follows the LLVM change to canonicalise the Windows target triple
spellings.  Rather than treating each Windows environment as a single entity,
the environments are now modelled properly as an environment.  This is a
mechanical change to convert the triple use to reflect that change.

llvm-svn: 204978
2014-03-27 22:50:18 +00:00
David Blaikie 7e2fd943ae Support for -Wa,-compress-debug-sections.
Also, while I'm here, support -nocompress-debug-sections too.

llvm-svn: 204959
2014-03-27 20:47:30 +00:00
Alexander Kornienko 18fa48c9f9 Move the -i[no-]system-prefix options from CC1Options.td to Options.td.
Summary:
This allows them to be used without -cc1 the same way as -I and -isystem.
Renamed the options to --system-header-prefix=/--no-system-header-prefix to avoid interference with -isystem and make the intent of the option cleaner.

Reviewers: rsmith

Reviewed By: rsmith

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D3185

llvm-svn: 204775
2014-03-26 01:39:59 +00:00
Evgeniy Stepanov 2bfcaabdec [msan] -fsanitize-memory-track-origins=[level] flag and docs.
This change turns -fsanitize-memory-track-origins into
-fsanitize-memory-track-origins=[level] flag (keeping the old one for
compatibility). Possible levels are 0 (off), 1 (default) and 2 (incredibly
detailed). See docs (part of this patch) for more info.

llvm-svn: 204346
2014-03-20 14:58:36 +00:00
Yunzhong Gao fcdc45ff2d Creating a printing policy for "half":
Since "half" is an OpenCL keyword and clang accepts __fp16 as an extension for
other languages, error messages and metadata (and hence debug info) should refer
to the half-precision floating point as "__fp16" instead of "half" when
compiling for non-OpenCL languages. This patch creates a new printing policy for
half in a similar manner to what is done for bool and wchar_t.

Differential Revision: http://llvm-reviews.chandlerc.com/D2952

llvm-svn: 204164
2014-03-18 17:55:18 +00:00
Richard Smith ae385084c5 Implement the MS extension __identifier properly: take a token and strip it of
its keywordliness.

llvm-svn: 203987
2014-03-15 00:06:08 +00:00
Argyrios Kyrtzidis 6d0753d42a [Modules] Emit the module file paths as dependencies of the PCH when we are building one.
This is because the PCH is tied to the module files, if one of the module files changes or gets removed
the build system should re-build the PCH file.

rdar://16321245

llvm-svn: 203885
2014-03-14 03:07:38 +00:00
Argyrios Kyrtzidis 68ccbe01b0 [Modules] Make sure that the synthesized file "__inferred_module.map" doesn't show up as dependency of a module file.
Follow-up for rdar://15459210

llvm-svn: 203882
2014-03-14 02:26:31 +00:00
Craig Topper 456705304a De-virtualize a method. It's called through template magic and doesn't override anything.
llvm-svn: 203764
2014-03-13 07:14:47 +00:00
Craig Topper 34d8e21d32 Remove unreachable PragmaCaptured method. It's not a real PPCallback.
llvm-svn: 203759
2014-03-13 06:19:24 +00:00
Craig Topper afa7cb3aa5 [C++11] Add 'override' keyword to virtual methods that override their base class.
llvm-svn: 203758
2014-03-13 06:07:04 +00:00
Roman Divacky b048007243 Dont unconditionally add gcc4.2 include paths on FreeBSD.
Newer FreeBSD doesnt ship with gcc and defaults to using libc++.

llvm-svn: 203700
2014-03-12 19:32:42 +00:00
Hans Wennborg 501eadb429 Check for LLVM_ON_WIN32 instead of _WIN32.
This is a follow-up to r203624 to address Anton's comment.

llvm-svn: 203668
2014-03-12 16:07:46 +00:00
Ben Langmuir dcf73861a5 Add an option -fmodules-validate-system-headers
When enabled, always validate the system headers when loading a module.
The end result of this is that when these headers change, we will notice
and rebuild the module.

llvm-svn: 203630
2014-03-12 00:06:17 +00:00
Richard Smith 723928c7dc If a module map is found in a relative -I path, convert the filenames within it
to absolute paths when building the includes file for the module. Without this,
the module build would fail, because the relative paths we were using are not
necessarily relative to a directory in our include path.

llvm-svn: 203528
2014-03-11 02:02:47 +00:00
Robert Lytton 2c942c64fb Make __LITTLE_ENDIAN__/__BIG_ENDOAN__ common PredefinedMacros
llvm-svn: 203455
2014-03-10 12:06:29 +00:00
Ahmed Charles dfca6f97bc [C++11] Replace OwningPtr include with <memory>.
llvm-svn: 203389
2014-03-09 11:36:40 +00:00
Argyrios Kyrtzidis b255ee91a7 [libclang] Don't pad the main buffer for the preamble.
Padding does not seem to be useful currently, and it leads to bogus location if an error
points to the end of the file.

rdar://15836513

llvm-svn: 203370
2014-03-09 04:24:57 +00:00
Aaron Ballman 23a6dcb365 [C++11] Replacing EnumDecl iterators enumerator_begin() and enumerator_end() with iterator_range enumerators(). Updating all of the usages of the iterators with range-based for loops.
llvm-svn: 203353
2014-03-08 18:45:14 +00:00
Richard Smith 9bca298f6d Module [extern_c] attribute: inherit to submodules, don't write 'extern "C"'
blocks when building in C mode, and serialize and deserialize the attribute.

llvm-svn: 203317
2014-03-08 00:03:56 +00:00
Benjamin Kramer 4cadf292a5 [C++11] Revert uses of lambdas with array_pod_sort.
Looks like GCC implements the lambda->function pointer conversion differently.

llvm-svn: 203293
2014-03-07 21:51:58 +00:00
Benjamin Kramer 15ae783e14 [C++11] Convert sort predicates into lambdas.
No functionality change.

llvm-svn: 203289
2014-03-07 21:35:40 +00:00
Ahmed Charles b89843299a Replace OwningPtr with std::unique_ptr.
This compiles cleanly with lldb/lld/clang-tools-extra/llvm.

llvm-svn: 203279
2014-03-07 20:03:18 +00:00
Aaron Ballman 629afaefe0 [C++11] Replacing DeclBase iterators decls_begin() and decls_end() with iterator_range decls(). The same is true for the noload versions of these APIs. Updating all of the usages of the iterators with range-based for loops.
llvm-svn: 203278
2014-03-07 19:56:05 +00:00
Ahmed Charles 9a16beb8bc Change OwningPtr::take() to OwningPtr::release().
This is a precursor to moving to std::unique_ptr.

llvm-svn: 203275
2014-03-07 19:33:25 +00:00
Aaron Ballman f6bf62e2d0 [C++11] Replacing FunctionDecl iterators param_begin() and param_end() with iterator_range params(). Updating all of the usages of the iterators with range-based for loops.
llvm-svn: 203248
2014-03-07 15:12:56 +00:00
Argyrios Kyrtzidis e1974dcd92 [Preprocessor] Pass TranslationUnitKind to the preprocessor and if it is TU_Prefix
avoid warning for unused macros.

rdar://15034698

llvm-svn: 203213
2014-03-07 07:47:58 +00:00
Ben Langmuir cb69b57b2a Add dependencies from imported modules with -MD
Add module dependencies to the dependency files created by -MD/-MMD/etc.
by attaching an ASTReaderListener that will call into the dependency
file generator when a module input file is seen in the serialized AST.

llvm-svn: 203208
2014-03-07 06:40:32 +00:00
Yunzhong Gao 820c687e9e The Visual Studio IDE changed behavior in VS2012. It used to be the case that
the clang diagnostic has to report a column number one less than the correct
value in order for the IDE to move the cursor to the expected location. This
behavior is changed in VS2012 and VS2013 so that the IDE is now expecting the
column number to match the actual source location.
  Before: source(line, column-1): type: message
  After: source(line, column): type: message

This patch changes -fdiagnostics-format=msvc to match the new VS2012 and VS2013
when fmsc-version is 1700 or greater.

Differential Revision: http://llvm-reviews.chandlerc.com/D2949

llvm-svn: 203183
2014-03-07 00:23:36 +00:00
Alexey Bataev d4dbdf5438 [OPENMP] Updated comments and _OPENMP macro value for OpenMP 4.0 (for 'omp simd' support)
llvm-svn: 203114
2014-03-06 12:27:56 +00:00
Alexey Bataev 186b28a8cf [OPENMP] Added option -fopenmp=libiomp5|libgomp
llvm-svn: 203081
2014-03-06 05:43:53 +00:00
Richard Smith 7bea1d42d8 When building a module from the command line via -emit-module, add an entry to
the module build stack for the module being built, so we can correctly detect
recursive module builds.

llvm-svn: 203006
2014-03-05 20:55:36 +00:00
Richard Smith 841f1c782e [C++11] Simplify a callback to use a lambda.
llvm-svn: 202897
2014-03-04 21:50:01 +00:00
Jordan Rose 7ef1c387a0 Serialized diagnostic severity levels should be stable.
Serialized diagnostics were accidentally using the AST diagnostic level values
rather than a dedicated stable enum, so the addition of "remark" broke the
reading of existing serialized diagnostics files. I've added a .dia file
generated from Xcode 5's Clang to make sure we don't break this in the future.

llvm-svn: 202733
2014-03-03 18:29:52 +00:00
Argyrios Kyrtzidis 1594c15500 Introduce '-fmodules-user-build-path' which accepts the "canonical" path to a user workspace build.
This is used to avoid conflicts with user modules with the same name from different workspaces.

rdar://16042513

llvm-svn: 202683
2014-03-03 08:12:05 +00:00
David Majnemer dbd6acb64b Revert "Preprocessor: Add __ALIGNOF_MAX_ALIGN_T__"
This commit reverts r201037, it's functionality is not needed given the
definition of std::max_align_t in libcxx circa r201843.

llvm-svn: 202667
2014-03-02 23:01:10 +00:00
Benjamin Kramer 4527fb2f33 [C++11] Use std::atomic instead of LLVM's.
No intended functionality change.

llvm-svn: 202652
2014-03-02 17:08:31 +00:00
Benjamin Kramer 867ea1d426 [C++11] Replace llvm::tie with std::tie.
llvm-svn: 202639
2014-03-02 13:01:17 +00:00
Craig Topper a798a9db93 Switch all uses of LLVM_OVERRIDE to just use 'override' directly.
llvm-svn: 202625
2014-03-02 09:32:10 +00:00
Richard Smith 7794486846 Add [extern_c] attribute for modules, allowing a C module to be imported within an extern "C" block in C++ code.
llvm-svn: 202615
2014-03-02 05:58:18 +00:00
Benjamin Kramer bbdd7640e8 [C++11] Replace verbose functors with succinct lambdas
No functionality change.

llvm-svn: 202590
2014-03-01 14:48:57 +00:00
Ben Langmuir d066d4c849 Reapply fixed "Honour 'use-external-names' in FileManager"
Was r202442

There were two issues with the original patch that have now been fixed.
1. We were memset'ing over a FileEntry in a test case. After adding a
   std::string to FileEntry, this still happened to not break for me.
2. I didn't pass the FileManager into the new compiler instance in
   compileModule. This was hidden in some cases by the fact I didn't
   clear the module cache in the test.

Also, I changed the copy constructor for FileEntry, which was memcpy'ing
in a (now) unsafe way.

llvm-svn: 202539
2014-02-28 21:16:07 +00:00
Tobias Grosser 741602461d Add 'remark' diagnostic type in 'clang'
A 'remark' is information that is not an error or a warning, but rather some
additional information provided to the user. In contrast to a 'note' a 'remark'
is an independent diagnostic, whereas a 'note' always depends on another
diagnostic.

A typical use case for remark nodes is information provided to the user, e.g.
information provided by the vectorizer about loops that have been vectorized.

This patch provides the initial implementation of 'remarks'. It includes the
actual definiton of the remark nodes, their printing as well as basic parameter
handling. We are reusing the existing diagnostic parameters which means a remark
can be enabled with normal '-Wdiagnostic-name' flags and can be upgraded to
an error using '-Werror=diagnostic-name'. '-Werror' alone does not upgrade
remarks.

This patch is by intention minimal in terms of parameter handling. More
experience and more discussions will most likely lead to further enhancements
in the parameter handling.

llvm-svn: 202475
2014-02-28 09:11:08 +00:00
Argyrios Kyrtzidis 24c55228a9 [ASTUnit] Don't let the preamble diagnostics out-live the CompilerInstance that created them,
this is inherently unsafe.

Instead get the diagnostic info into a SourceManager-independent form.

llvm-svn: 202471
2014-02-28 07:11:01 +00:00
Ben Langmuir c8a71468b7 Split FileEntry name vs. isValid
This is a small bit of refactoring in preparation for FileEntry owning
the storage for its own name.

llvm-svn: 202412
2014-02-27 17:23:33 +00:00
Argyrios Kyrtzidis 1b7ed91e44 [ASTUnit] Fix use-after-free bug in ASTUnit::getMainBufferWithPrecompiledPreamble().
With r197755 we started reading the contents of buffer file entries, but the
buffers may point to ASTReader blobs that have been disposed.

Fix this by having the CompilerInstance object keep a reference to the ASTReader
as well as having the ASTContext keep reference to the ExternalASTSource.

This was very difficult to construct a test case for.
rdar://16149782

llvm-svn: 202346
2014-02-27 04:11:59 +00:00
NAKAMURA Takumi 9698686505 [CMake] Use LINK_LIBS instead of target_link_libraries().
llvm-svn: 202238
2014-02-26 06:41:29 +00:00
Ben Langmuir 801272a98c Add a driver option -ivfsoverlay
Reads the description of a virtual filesystem from a file and overlays
it over the real file system.

llvm-svn: 202176
2014-02-25 18:23:47 +00:00
Richard Smith 5b2f7c5f60 If preprocessing results in a token with leading whitespace that was expanded
from a macro in column 0, ensure that we print whitespace before it in the -E
output. Patch by Harald van Dijk!

llvm-svn: 202070
2014-02-24 20:50:36 +00:00
Richard Barton c9b5f35ec1 Implement -fno-short-wchar
llvm-svn: 202058
2014-02-24 18:43:28 +00:00
Rafael Espindola 4fbd373815 Update for llvm api change.
llvm-svn: 202053
2014-02-24 18:20:21 +00:00
Rafael Espindola 04a13befd8 Don't assume that F_None is the default. It is about to change.
llvm-svn: 202040
2014-02-24 15:06:52 +00:00
Richard Smith 51bacfd9c7 Update __cplusplus to match the value in the C++14 DIS preview (D3937).
llvm-svn: 202003
2014-02-24 01:35:45 +00:00
NAKAMURA Takumi e842e4b2f1 [CMake] Resurrect mis-dropped dependency to ClangDriverOptions since r201842.
llvm-svn: 201978
2014-02-23 13:44:09 +00:00
Saleem Abdulrasool cfeb90d7a8 clang: add -f{no-,}integrate-as as consistent parameters
The integrated assembler is a feature.  This makes the new flags the default
option, and the previous versions aliases.  Ideally, at some point the aliases
would be entirely removed.

llvm-svn: 201963
2014-02-23 00:40:30 +00:00
NAKAMURA Takumi 7da9487dd4 [CMake] Get rid of explicit dependencies to include/clang/*.inc and introduce CLANG_TABLEGEN_TARGETS.
This does;
  - clang_tablegen() adds each tblgen'd target to global property CLANG_TABLEGEN_TARGETS as list.
  - List of targets is added to LLVM_COMMON_DEPENDS.
  - all clang libraries and targets depend on generated headers.

You might wonder this would be regression, but in fact, this is little loss.
  - Almost all of clang libraries depend on tblgen'd files and clang-tblgen.
  - clang-tblgen may cause short stall-out but doesn't cause unconditional rebuild.
  - Each library's dependencies to tblgen'd files might vary along headers' structure.
    It made hard to track and update *really optimal* dependencies.

Each dependency to intrinsics_gen and ClangSACheckers is left as DEPENDS.

llvm-svn: 201842
2014-02-21 07:59:59 +00:00
Rafael Espindola 33ebd2171e Accept -no-integrated-as in -cc1 and forward it to llvm.
llvm-svn: 201837
2014-02-21 03:14:07 +00:00
Reid Kleckner 0e73ec4550 Expand macros in pragmas with -fms-extensions and -E
gcc never expands macros in pragmas and MSVC always expands macros
before processing pragmas.  Clang usually allows macro expansion, except
in a handful of pragmas, most of which are handled by the lexer.

Also remove PPCallbacks for pragmas that are currently handled in the
parser.  Without a Parser, such as with clang -E, these callbacks would
never be called.

Fixes PR18576.

llvm-svn: 201821
2014-02-20 22:59:51 +00:00
Ben Langmuir c8130a74f4 Recommit virtual file system
Previously reverted in r201755 due to causing an assertion failure.

I've removed the offending assertion, and taught the CompilerInstance to
create a default virtual file system inside createFileManager. In the
future, we should be able to reach into the CompilerInvocation to
customize this behaviour without breaking clients that don't care.

llvm-svn: 201818
2014-02-20 21:59:23 +00:00
Juergen Ributzka a32575e4f6 Reverting the virtual file system implementation, because it triggers an assertion
in our internal build bots.

This reverts commits 201618, 201635, 201636, 201639, 201685, 201691, and 201696.

llvm-svn: 201755
2014-02-20 05:24:58 +00:00
Reid Kleckner 588c937228 Use llvm::DeleteContainerSeconds when possible
llvm-svn: 201739
2014-02-19 23:44:52 +00:00
Ben Langmuir b50b23f9ac Pass VFS from CompilerInstance to FileManager
This change was somehow missed from r201618

llvm-svn: 201636
2014-02-19 03:34:59 +00:00
Ben Langmuir 090610d37a Initial implementation of virtual file system
This adds the minimum virtual file system support to start migrating
FileManager onto the VFS.

Originally discussed here:
http://lists.cs.uiuc.edu/pipermail/cfe-dev/2014-February/035188.html

Differential Revision: http://llvm-reviews.chandlerc.com/D2745

llvm-svn: 201618
2014-02-19 00:10:30 +00:00
Reid Kleckner c0dca6ded7 MS ABI: Implement #pragma vtordisp() and clang-cl /vdN
These features are new in VS 2013 and are necessary in order to layout
std::ostream correctly.  Currently we have an ABI incompatibility when
self-hosting with the 2013 stdlib in our convertible_fwd_ostream wrapper
in gtest.

This change adds another implicit attribute, MSVtorDispAttr, because
implicit attributes are currently the best way to make sure the
information stays on class templates through instantiation.

Reviewers: majnemer

Differential Revision: http://llvm-reviews.chandlerc.com/D2746

llvm-svn: 201274
2014-02-12 23:50:26 +00:00
Dmitri Gribenko f430da4de6 Add an option to allow Clang verify source files for a module only once during
the build

When Clang loads the module, it verifies the user source files that the module
was built from.  If any file was changed, the module is rebuilt.  There are two
problems with this:
1. correctness: we don't verify system files (there are too many of them, and
   stat'ing all of them would take a lot of time);
2. performance: the same module file is verified again and again during a
   single build.

This change allows the build system to optimize source file verification.  The
idea is based on the fact that while the project is being built, the source
files don't change.  This allows us to verify the module only once during a
single build session.  The build system passes a flag,
-fbuild-session-timestamp=, to inform Clang of the time when the build started.
The build system also requests to enable this feature by passing
-fmodules-validate-once-per-build-session.  If these flags are not passed, the
behavior is not changed.  When Clang verifies the module the first time, it
writes out a timestamp file.  Then, when Clang loads the module the second
time, it finds a timestamp file, so it can compare the verification timestamp
of the module with the time when the build started.  If the verification
timestamp is too old, the module is verified again, and the timestamp file is
updated.

llvm-svn: 201224
2014-02-12 10:33:14 +00:00
Daniel Jasper d90ec5717a Fix memory leak introduced by r201010.
llvm-svn: 201220
2014-02-12 08:45:05 +00:00
David Majnemer 86c318f496 MS ABI: Add support for the -vm{b,g,s,m,v} flags
These flags control the inheritance model initially used by the
translation unit.

Differential Revision: http://llvm-reviews.chandlerc.com/D2741

llvm-svn: 201175
2014-02-11 21:05:00 +00:00
Josh Magee e0fc1a80cb [stackprotector] Add command line option -fstack-protector-strong
This option has the following effects:
 * It adds the sspstrong IR attribute to each function within the CU.
 * It defines the macro __SSP_STRONG__ with the value of 2.

Differential Revision: http://llvm-reviews.chandlerc.com/D2717

llvm-svn: 201120
2014-02-11 01:35:14 +00:00
Dmitri Gribenko b41e7e2c92 ASTUnit: simplify remapping files by using the exact same logic in Preprocessor
llvm-svn: 201082
2014-02-10 12:31:34 +00:00
David Majnemer 158ba130ee Preprocessor: Add __ALIGNOF_MAX_ALIGN_T__
TargetInfo::getSuitableAlign() was introduced in r146762 and is defined
as alignof(std::max_align_t).

Introduce __ALIGNOF_MAX_ALIGN_T__ which exposes getSuitableAlign() so
that libc++ may take advantage of it.

llvm-svn: 201037
2014-02-09 05:30:48 +00:00
John McCall 8f80a61914 Remove the -fhidden-weak-vtables -cc1 option. It was dead,
gross, and increasingly replaced through other mechanisms.

llvm-svn: 201011
2014-02-08 00:41:16 +00:00
Dmitri Gribenko c444b57790 ASTUnit: remove dead code in remapping files
ASTUnit contains code to remap files to other files on disk.  This code is not
used.  We only remap files to MemoryBuffers.

llvm-svn: 201010
2014-02-08 00:38:15 +00:00
Ben Langmuir 3d4417c7fd Stat system dependencies when using -verify-pch
We don't stat the system headers to check for stalenes during regular
PCH loading for performance reasons.  When explicitly saying
-verify-pch, we want to check all the dependencies - user or system.

llvm-svn: 200979
2014-02-07 17:31:11 +00:00
Dmitri Gribenko 2febd212d3 ASTUnit: ArrayRef'ize RemappedFiles
llvm-svn: 200975
2014-02-07 15:00:22 +00:00
Ben Langmuir 2cb4a78f93 Add a CC1 option -verify-pch
This option will:
- load the given pch file
- verify it is not out of date by stat'ing dependencies, and
- return 0 on success and non-zero on error

llvm-svn: 200884
2014-02-05 22:21:15 +00:00
Reid Kleckner c50b4bfc1c Fix a -Wformat warning in ASTUnit.cpp
llvm::sys::cas_flag is 'long' instead of 'uint32_t' on win32, because
that's what InterlockedIncrement is defined to accept.

I still don't know if we should be calling fprintf from ASTUnit.cpp
behind a getenv check.

llvm-svn: 200718
2014-02-03 22:20:24 +00:00
Ben Langmuir 5eb7cb74a7 Revert "Fix assertion failures on annot_* tokens in clang -E"
This is causing a failure in the msan buildbot that I am having trouble
reproducing.  Reverting until I can figure out what went wrong.

llvm-svn: 200492
2014-01-30 21:50:18 +00:00
Ben Langmuir 5944ecd64c Fix assertion failures on annot_* tokens in clang -E
In particular, #pragma clang __debug, and #include implicitly changed
into @import were causing assertion failures.

llvm-svn: 200475
2014-01-30 18:09:55 +00:00
Ben Langmuir 9eb229bfe5 Require a module.map file to load a module
Removes some old code that allowed a module to be loaded from a pcm file
even if the module.map could not be found.  Also update a number of
tests that relied on the old behavior.

llvm-svn: 199852
2014-01-22 23:19:39 +00:00
Evgeniy Stepanov d04b861e69 [asan] Remove -fsanitize-address-zero-base-shadow command line
flag from clang, and disable zero-base shadow support on all platforms
where it is not the default behavior.

- It is completely unused, as far as we know.
- It is ABI-incompatible with non-zero-base shadow, which means all
objects in a process must be built with the same setting. Failing to
do so results in a segmentation fault at runtime.
- It introduces a backward dependency of compiler-rt on user code,
which is uncommon and complicates testing.

This is the Clang part of a larger change.

llvm-svn: 199372
2014-01-16 10:19:31 +00:00
Hans Wennborg c9bd88e681 Remove the -cxx-abi command-line flag.
This makes the C++ ABI depend entirely on the target: MS ABI for -win32 triples,
Itanium otherwise. It's no longer possible to do weird combinations.

To be able to run a test with a specific ABI without constraining it to a
specific triple, new substitutions are added to lit: %itanium_abi_triple and
%ms_abi_triple can be used to get the current target triple adjusted to the
desired ABI. For example, if the test suite is running with the i686-pc-win32
target, %itanium_abi_triple will expand to i686-pc-mingw32.

Differential Revision: http://llvm-reviews.chandlerc.com/D2545

llvm-svn: 199250
2014-01-14 19:35:09 +00:00
Alp Toker fd8c079dac Switch around the order of MSVCCompat and MicrosoftExt
Full language modes usually get listed before minor language extensions in
LangOpts, so that subsequent sub-modes can predicate on the major modes.

This also lends to a cleanup in CompilerInvocation to better indicate to the
reader that MSVCCompat is a superset of MicrosoftExt.

Cleanup only.

llvm-svn: 199210
2014-01-14 12:53:58 +00:00