Patch by Adam Strzelecki, thank you!

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GetGVALinkageForFunction handles TSK_ExplicitInstantiationDeclaration
twice, remove the redundant code trying to handle it again.

While we are here, update the reference we make to the standard.  It
seems like another paragraph was added causing this text to get
renumbered.

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[libclang] Introduce clang_Module_isSystem(), which returns non-zero if the given CXModule is a system one.

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that isn't always wrong.


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PR19748: Make sure we don't lose colon protection after the parenthesized type-id in a cast-expression.


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This undoes half of r208786.

It had problems with lazily declared special members in cases like this:
  struct A {
    A();
    A &operator=(A &&o);
    void *p;
  };
  void foo(A);
  void bar() {
    foo({});
  }

In this case, the copy and move constructors are implicitly deleted.
However, Clang doesn't eagerly declare the copy ctor in the AST, so we
pass the struct in registers.  Furthermore, GCC passes this in registers
even though this class should be uncopyable.

Revert this for now until the dust settles.

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options.

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This fills in a few missing gaps in functionality.

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pointer and reference types, even if those types are produced by template
instantiation.


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it for -Wunused-comparion warnings.  This fixes PR19724.


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[liblang] Introduce clang_getModuleForFile, which given a CXFile header file, returns the module that contains it, if one exists.

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No functionality change.

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elaborated-type-specifier, place it in the correct
context.

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None of our tests use /fallback, so this lets us gradually add RTTI
support without breaking projects using /fallback.

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This affects both the Itanium and Microsoft C++ ABIs.

This is in anticipation of a change to the Itanium C++ ABI, and should
match GCC's current behavior.  The new text will likely be:

"""
Pass an object of class type by value if every copy constructor and
move constructor is deleted or trivial and at least one of them is not
deleted, and the destructor is trivial.
"""
http://sourcerytools.com/pipermail/cxx-abi-dev/2014-May/002728.html

On x86 Windows, we can mostly use the same logic, where we use inalloca
instead of passing by address.  However, on Win64, there are register
parameters, and we have to do what MSVC does.  MSVC ignores the presence
of non-trivial move constructors and only considers the presence of
non-trivial or deleted copy constructors.  If a non-trivial or deleted
copy ctor is present, it passes the argument indirectly.

This change fixes bugs and makes us more ABI compatible with both GCC
and MSVC.

Fixes PR19668.

Reviewers: rsmith

Differential Revision: http://reviews.llvm.org/D3660

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With AllowShortBlocksOnASingleLine, clang-format allows:
  if (a) { return; }

Based on patch by Gonzalo BG, thank you!

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resolves to an existing declaration if there are attributes
present.

This gives us something to apply the attributes to.

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DebugInfo: Avoid creating DILexicalScopeFiles when the filename in the current scope has not changed.

This looks like the right way for this check to work, but there is
another semi-obvious bug, I would think: why is CurLoc not zero'd out
between functions? The possibility for it to bleed between them seems
problematic. (& indeed I caused tests to fail when I fixed this a
different way, by setting CurLoc to SourceLocation() and the end of
EmitFunctionEnd... )

The changes to debug-info-blocks.m are due to a mismatch between the
source manager's file naming and CGDebugInfo's default handling when no
-main-file-name is specified. This actually reveals somewhat of a bug in
the debug info when using source files from standard in, too. See the
comment in CGDebugInfo::CreateCompileUnit for more details.

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In the Microsoft C++ ABI, instance methods always return records
indirectly via the second hidden parameter.  This was implemented in
X86_32ABIInfo, but not WinX86_64ABIInfo.

Rather than exposing a handful of boolean methods in the CGCXXABI
interface, we can expose a single method that applies C++ ABI return
value classification rules.

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caused us to perform copy-initialization for the parameters of an allocation
function called by a new-expression multiple times, resulting in us rejecting
allocations that passed non-copyable parameters (and much worse things in
MSVC compat mode, where we potentially called this function multiple times).


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well.

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instructions.


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Fix the AST printer for attributed statements so that it does not print duplicate attribute introducers. Eg) [[clang::fallthrough]] instead of  [[[[clang::fallthrough]]]]

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