Produce direct calls instead of alias to linkonce_odr functions.

This is a small optimization on linux, but should help more on windows
where msvc only outputs one destructor if there would be two identical ones.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194095 91177308-0d34-0410-b5e6-96231b3b80d8
With this patch -Wwrite-strings is still implemented with the terrible
hack of passing -fconst-strings to -cc1, but at least the driver uses
the regular warning checking code path.

Since we don't support a warning that is DefaultIgnore in one language
but not in another, this patch creates a dummy C only warning in the same
group as the existing one to get the desired effect.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194097 91177308-0d34-0410-b5e6-96231b3b80d8
Refactor constant expression handling and make a couple of tweaks to make it a
bit more robust against future changes. This includes a slight diagnostic
improvement: if we know we're only trying to form a constant expression, take
the first diagnostic which shows the expression is not a constant expression,
rather than preferring the first one which makes the expression unfoldable.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194098 91177308-0d34-0410-b5e6-96231b3b80d8
Simplify: we don't care why constant evaluation might have failed when we're
checking an expression for constant overflow.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194099 91177308-0d34-0410-b5e6-96231b3b80d8
ObjectiveC migrator. Please annotation of properties with 
NS_RETURNS_INNER_POINTER under -objcmt-returns-innerpointer-property
flag (off by default), as older compilers do not support such annotations.
// rdar://15396636


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194100 91177308-0d34-0410-b5e6-96231b3b80d8
Thread safety analysis: check pt_guarded_by attribute when calling -> and *
on smart pointers.  -Wthread-safety-beta only.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194103 91177308-0d34-0410-b5e6-96231b3b80d8
Introduce BoundNodes::getMap.

The purpose of this function is to allow clients of the dynamic AST matcher
to enumerate each binding.

Differential Revision: http://llvm-reviews.chandlerc.com/D2095

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194112 91177308-0d34-0410-b5e6-96231b3b80d8
Introduce DynTypedNode::print, dump and getSourceRange.

These functions can generally be applied to multiple kinds of AST node,
so it makes sense to add them to DynTypedNode.

Differential Revision: http://llvm-reviews.chandlerc.com/D2096

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194113 91177308-0d34-0410-b5e6-96231b3b80d8
Microsoft adds weird padding before virtual bases if the last field was a bitfield

This patch adds the same behavior to clang.

Differential Revision: http://llvm-reviews.chandlerc.com/D2103



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194115 91177308-0d34-0410-b5e6-96231b3b80d8
More constant evaluation cleanup, and fix an issue where we'd override an
earlier 'non-constant' diagnostic with a later one if the earlier one was from
a side-effect we thought we could evaluate past.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194117 91177308-0d34-0410-b5e6-96231b3b80d8
Implement AArch64 Neon instruction set Bitwise Extract.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194119 91177308-0d34-0410-b5e6-96231b3b80d8
Implement AArch64 Neon instruction set Perm.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194124 91177308-0d34-0410-b5e6-96231b3b80d8
Fix PR17738 - add support for vtordisp thunks when using -cxx-abi microsoft

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194132 91177308-0d34-0410-b5e6-96231b3b80d8
[libclang] Some changes on the linker options for libclang on a CMake build.

- Use the 'libclang.exports' file.
- Pass -Wl,-current_version
- Set install name to "@rpath"

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194134 91177308-0d34-0410-b5e6-96231b3b80d8
Silencing some MSVC warnings about not all control paths returning a value when they actually do.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194156 91177308-0d34-0410-b5e6-96231b3b80d8
Thread safety analysis: minor bugfix to smart pointer handling, and expanded
test case.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194157 91177308-0d34-0410-b5e6-96231b3b80d8
Fix the -cxx-abi microsoft -mconstructor-aliases combination.

On the microsoft ABI clang is producing one weak_odr and one linkonce_odr
destructor, which is reasonable since only one is required.

The fix is simply to move the assert past the special case treatment of
linkonce_odr.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194158 91177308-0d34-0410-b5e6-96231b3b80d8
Add a limit to the length of a sequence of 'operator->' functions we will
follow when building a class member access expression. Based on a patch by
Rahul Jain!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194161 91177308-0d34-0410-b5e6-96231b3b80d8
Fix diagnostic goof in r194161.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194162 91177308-0d34-0410-b5e6-96231b3b80d8
Introduce ClangTool::buildASTs, and buildASTFromCode.

These allow clients to retrieve persistent AST objects (ASTUnits) which
can be used in an ad-hoc manner after parsing.

To accommodate this change, the code for processing a CompilerInvocation
using a FrontendAction has been factored out to FrontendActionFactory, and
a new base class, ToolAction, has been introduced, allowing the tool to do
arbitrary things with each CompilerInvocation.  This change was necessary
because ASTUnit does not use the FrontendAction interface directly.

This change also causes the FileManager in ClangTool to use shared ownership.
This will become necessary because ASTUnit takes shared ownership of
FileManager (ClangTool's FileManager is currently unused by ASTUnit; this
is a FIXME).  As shown in the tests, any client of ToolInvocation will
need to be modified to use shared ownership for FileManager.

Differential Revision: http://llvm-reviews.chandlerc.com/D2097

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194164 91177308-0d34-0410-b5e6-96231b3b80d8