Till now, preserve_mostcc/preserve_allcc calling convention attributes were only
available at the LLVM IR level. This patch adds attributes for
preserve_mostcc/preserve_allcc calling conventions to the C/C++ front-end.

The code was mostly written by Juergen Ributzka.
I just added support for the AArch64 target and tests.

Differential Revision: http://reviews.llvm.org/D18025

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OpenMP 4.5 allows to use data members in private clauses. Patch adds
codegen support for 'linear' clause.

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[index] libclang: Make sure to treat forward ObjC protocols as ObjCProtocolRef declarations, and fix related crash.

rdar://25035376

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Clauses with post-update expressions always have pre-init statement. So
OMPClauseWithPreInit now is the base for OMPClauseWithPostUpdate.

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This is a sad workaround for the lack of plugin support in libclang. Depends
on D17807, a tools-extra change that also contains the test case.

This is designed to be easy to remove again if libclang ever grows proper
plugin support.

Differential Revision: http://reviews.llvm.org/D17808

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I've tried to keep the infrastructure behind parameter ABI
treatments fairly general.

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Add parsing, sema analysis and serialization/deserialization for 'declare reduction' construct.
User-defined reductions are defined as

#pragma omp declare reduction( reduction-identifier : typename-list : combiner ) [initializer ( initializer-expr )]
These custom reductions may be used in 'reduction' clauses of OpenMP constructs. The combiner specifies how partial results can be combined into a single value. The
combiner can use the special variable identifiers omp_in and omp_out that are of the type of the variables being reduced with this reduction-identifier. Each of them will
denote one of the values to be combined before executing the combiner. It is assumed that the special omp_out identifier will refer to the storage that holds the resulting
combined value after executing the combiner.
As the initializer-expr value of a user-defined reduction is not known a priori the initializer-clause can be used to specify one. Then the contents of the initializer-clause
will be used as the initializer for private copies of reduction list items where the omp_priv identifier will refer to the storage to be initialized. The special identifier
omp_orig can also appear in the initializer-clause and it will refer to the storage of the original variable to be reduced.
Differential Revision: http://reviews.llvm.org/D11182


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This is like r262493, but for pragma detect_mismatch instead of pragma comment.
The two pragmas have similar behavior, so use the same approach for both.


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`#pragma comment` was handled by Sema calling a function on ASTConsumer, and
CodeGen then implementing this function and writing things to its output.

Instead, introduce a PragmaCommentDecl AST node and hang one off the
TranslationUnitDecl for every `#pragma comment` line, and then use the regular
serialization machinery. (Since PragmaCommentDecl has codegen relevance, it's
eagerly deserialized.)

http://reviews.llvm.org/D17799


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OpenMP 4.5 allows to privatize non-static data members of current class
in non-static member functions. Patch supports codegen for non-static
data members in 'reduction' clauses.

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This behavior is enabled when the new CXTranslationUnit_KeepGoing
option is passed to clang_parseTranslationUnit{,2}. It is geared
towards use by IDEs and similar consumers of the clang-c API where
fatal errors may arise when parsing incomplete code mid-edit, or
when include paths are not properly configured yet. In such situations
one still wants to get as much information as possible about a TU.
Previously, the semantic analysis would not instantiate templates
or report additional fatal errors after the first fatal error was
encountered.

Fixes PR24268.

Patch by Milian Wolff.

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OpenMP 4.5 allows to privatize non-static member decls in non-static
member functions. Patch captures such decls by reference in general (for
bitfields, by value) and then operates with this capture. For bitfields,
at the end of codegen for lastprivates original bitfield is updated with the value of captured copy.

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This change migrates clang-format to add_clang_tool which makes a component-based install target. To support component-based installation the extra installed scripts all need to have the "clang-format" component too.

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Makes scan-build successfully accept non-existing output directories provided via "-o" option. The directory is created in this case. This behavior is conforming to the old perl scan-build implementation.
(http://reviews.llvm.org/D17091)

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[c-index-test] CMake: When installing c-index-test to a different prefix directory, add an rpath so that
it can find libclang.

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to force debug build and hopefully enable more precise warnings.

Static Analyzer is much more efficient when built in debug mode
(-UNDEBUG) so we advice users to enable it manually. This may be
inconvenient in case of large complex projects (think about Linux
distros e.g. Android or Tizen). This patch adds a flag to scan-build
which inserts -UNDEBUG automatically.

Differential Revision: http://reviews.llvm.org/D16200


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Added codegen for captured data members in non-static member functions.

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This appears to be passing '-Wl,-order_file' to Linux link commands,
which then causes the linker to silently, behind the scenes, write the
output to 'rder_file' instead of somewhere else. Will work with Chris to
figure out the proper support for this, but so far there are numerous
people who can't get Clang to update when they build because of this.

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Expressions inside 'schedule'|'dist_schedule' clause must be captured in
combined directives to avoid possible crash during codegen. Patch
improves handling of such constructs

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Enable it for USRs and names when indexing.
Forward references can have different template argument names; including them
makes USRs and names unstable, since the name depends on whether we saw a forward reference or not.

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These codepaths would generate warnings with GCC on linux even though the switch
was covered.  Add llvm_unreachable markers to indicate that the switch should be
covered.  NFC.

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[index] Factor libclang's functionality to determing the mangled name of symbols into the clangIndex library.

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Found by lsan.

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Reduce the number of implicit StringRef->std::string conversions by threading StringRef through more APIs.

No functionality change intended.

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[libclang] Separate the underlying indexing functionality of libclang and introduce it into the clangIndex library.

It is a general goodness for libclang itself to mostly be a wrapper of functionality provided by the libraries.

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Summary:
This commit re-lands r259862. The underlying cause of the build breakage was an incorrectly written capabilities test. In tools/Driver/CMakeLists.txt I was attempting to check if a linker flag worked, the test was passing it to the compiler, not the linker. CMake doesn't have a linker test, so we have a hand-rolled one.

Original Patch Review: http://reviews.llvm.org/D16896

Original Summary:
With this change generating clang order files using dtrace uses the following workflow:

cmake <whatever options you want>

ninja generate-order-file

ninja clang

This patch works by setting a default path to the order file (which can be overridden by the user). If the order file doesn't exist during configuration CMake will create an empty one.

CMake then ties up the dependencies between the clang link job and the order file, and generate-order-file overwrites CLANG_ORDER_FILE with the new order file.

Reviewers: bogner

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D16999

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OMPCapturedExprDecl allows caopturing not only of fielddecls, but also
other expressions. It also allows to simplify codegen for several
clauses.

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The following batch files allow to launch scan-build from an arbitrary location if path to clang\tools\scan-build-py\bin is added to %PATH%.

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Differential revision: http://reviews.llvm.org/D17060


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"main include" that will be the 1st include (category 0).

Because the clang-format visual studio extension does not pass the file
name and use the standard input, sort include cannot find a "main
include":

Testing fix on llvm\tools\clang\lib\Format\Format.cpp:
Original file:
  #include "clang/Format/Format.h"
  ...
  #include "clang/Basic/SourceManager.h"
  #include "clang/Lex/Lexer.h"

Without fix, selecting the includes and running visual studio
clang-format:
  ...
  #include "clang/Basic/SourceManager.h"
  #include "clang/Format/Format.h"
  #include "clang/Lex/Lexer.h"

With fix, selecting the includes and running visual studio clang-format:
  #include "clang/Format/Format.h"
  ...
  #include "clang/Basic/SourceManager.h"
  #include "clang/Lex/Lexer.h"

Test 2 with main header not at the start:
Original file:
  ...
  #include "clang/Format/Format.h"
  #include "clang/Basic/SourceManager.h"
  #include "clang/Lex/Lexer.h"

Without fix, selecting the includes and running visual studio
clang-format:
  ...
  #include "clang/Basic/SourceManager.h"
  #include "clang/Format/Format.h"
  #include "clang/Lex/Lexer.h"

With fix, selecting the includes and running visual studio clang-format:
  #include "clang/Format/Format.h"
  ...
  #include "clang/Basic/SourceManager.h"
  #include "clang/Lex/Lexer.h"

Patch by Jean-Philippe Dufraigne, thank you.
Review: http://reviews.llvm.org/D16524

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I guess it would be working since Rafael's r187619.

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