Implement most of N3638 (return type deduction for normal functions).
Missing (somewhat ironically) is support for the new deduction rules
in lambda functions, plus PCH support for return type patching.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181108 91177308-0d34-0410-b5e6-96231b3b80d8
More colours for C++ status page, and mark relaxed constexpr as partially complete.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181109 91177308-0d34-0410-b5e6-96231b3b80d8
Tweaks to C++ status: add a link to Faisal's generic lambdas implementation,
and mark "clarifying memory allocation" as done, since it turns out that our
optimizations here (such as they are) already conform to the new rules.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181110 91177308-0d34-0410-b5e6-96231b3b80d8
AArch64: teach Clang about __clear_cache intrinsic

libgcc provides a __clear_cache intrinsic on AArch64, much like it
does on 32-bit ARM.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181111 91177308-0d34-0410-b5e6-96231b3b80d8
In VarDecl nodes, store the thread storage class specifier as written.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181113 91177308-0d34-0410-b5e6-96231b3b80d8
Lex: Fix quadratic behavior when unescaping _Pragma strings.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181114 91177308-0d34-0410-b5e6-96231b3b80d8
Moved pretty printer test for thread local storage in its own file
and specified the triple.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181115 91177308-0d34-0410-b5e6-96231b3b80d8
Reverting r181004 since it has broken test/Sema/wchar.c.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181122 91177308-0d34-0410-b5e6-96231b3b80d8
Properly parsing __declspec(safebuffers), though there is no semantic hookup.  For more information about safebuffers, see MSDN: http://msdn.microsoft.com/en-us/library/dd778695(v=vs.110).aspx

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181123 91177308-0d34-0410-b5e6-96231b3b80d8
Replace ArrayRef<T>() with None, now that we have an implicit ArrayRef constructor from None

Patch by Robert Wilhelm.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181139 91177308-0d34-0410-b5e6-96231b3b80d8
ArrayRef<T>() -> None cleanup


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181140 91177308-0d34-0410-b5e6-96231b3b80d8