Provide better emacs integration.

The new emacs integration is simpler, does not save the current file
before reformatting and ensures that emacs does not scroll as a result
of formatting.

Also explicitly set the style in clang-format tests to make them more
robust.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179372 91177308-0d34-0410-b5e6-96231b3b80d8
Fix clang-format-diff.py script.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179377 91177308-0d34-0410-b5e6-96231b3b80d8
Revamps structural error detection / handling.

Previously we'd only detect structural errors on the very first level.
This leads to incorrectly balanced braces not being discovered, and thus
incorrect indentation.

This change fixes the problem by:
- changing the parser to use an error state that can be detected
  anywhere inside the productions, for example if we get an eof on
  SOME_MACRO({ some block <eof>
- previously we'd never break lines when we discovered a structural
  error; now we break even in the case of a structural error if there
  are two unwrapped lines within the same line; thus,
  void f() { while (true) { g(); y(); } }
  will still be re-formatted, even if there's missing braces somewhere
  in the file
- still exclude macro definitions from generating structural error;
  macro definitions are inbalanced snippets

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179379 91177308-0d34-0410-b5e6-96231b3b80d8
Sema: Give a typically small DenseMap some inline capacity.

Also reflow code a bit, no change in functionality.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179382 91177308-0d34-0410-b5e6-96231b3b80d8
[libclang] Introduce clang_Location_isInSystemHeader to check if a location resides in a system header.

This is a modified patch provided from Mikołaj Siedlarek!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179384 91177308-0d34-0410-b5e6-96231b3b80d8
Disable following tests for Hexagon:

1) Driver/output-file-is-dir.c - Checks for object file which can't
be created for Hexagon since assembler is unavailable.
2) PCH/cxx-typeid.cpp - 'typeinfo' include file is unavailable for Hexagon.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179385 91177308-0d34-0410-b5e6-96231b3b80d8
Add test case for r179383 and r179393.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179394 91177308-0d34-0410-b5e6-96231b3b80d8
[analyzer]Print field region even when the base region is not printable

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179395 91177308-0d34-0410-b5e6-96231b3b80d8
[analyzer] Print a diagnostic note even if the region cannot be printed.

There are few cases where we can track the region, but cannot print the note,
which makes the testing limited. (Though, I’ve tested this manually by making
all regions non-printable.) Even though the applicability is limited now, the enhancement
will be more relevant as we start tracking more regions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179396 91177308-0d34-0410-b5e6-96231b3b80d8
Add test case for r179399.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179400 91177308-0d34-0410-b5e6-96231b3b80d8
Add test case for r179403.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179404 91177308-0d34-0410-b5e6-96231b3b80d8
Define Neon intrinsics as "static inline" to avoid warning. rdar://13108414

We had been defining Neon intrinsics as "static" with always_inline attributes.
If you use them from an extern inline function, you get a warning, e.g.:

static function 'vadd_u8' is used in an inline function with external linkage

This change simply adds the inline keyword to avoid that warning.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179406 91177308-0d34-0410-b5e6-96231b3b80d8
[analyzer] Makes NewDeleteLeaks checker work independently from NewDelete.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179410 91177308-0d34-0410-b5e6-96231b3b80d8
<rdar://problem/13643854> Only emit ambiguous-expansion warnings when at least one of the macro definitions comes from a non-system header.

This slightly weakens the heuristic introduced in r178109.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179411 91177308-0d34-0410-b5e6-96231b3b80d8
tl;dr: Teach Clang to work around g++ changing its workaround to glibc's
implementation of C99's attempt to control the C++ standard. *sigh*


The C99 standard says that certain macros in <stdint.h>, such as SIZE_MAX,
should not be defined when the header is included in C++ mode, unless
__STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROS are defined. The C++11 standard
says "Thanks, but no thanks" and C11 removed this rule, but various C library
implementations (such as glibc) follow C99 anyway.

g++ prior to 4.8 worked around the C99 / glibc behavior by defining
__STDC_*_MACROS in <cstdint>, which was incorrect, because <stdint.h> is
supposed to provide these macros too. g++ 4.8 works around it by defining
__STDC_*_MACROS in its builtin <stdint.h> header.

This change makes Clang act like g++ 4.8 in this regard: our <stdint.h> now
countermands any attempt by the C library to implement the undesired C99 rules,
by defining the __STDC_*_MACROS first. Unlike g++, we do this even in C++98
mode, since that was the intent of the C++ committee, matches the behavior
required in C11, and matches our built-in implementation of <stdint.h>.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179419 91177308-0d34-0410-b5e6-96231b3b80d8
Parsing support for thread_local and _Thread_local. We give them the same
semantics as __thread for now.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179424 91177308-0d34-0410-b5e6-96231b3b80d8
NewDeleteLeaks is a subchecker of NewDelete checker; it is tested in NewDelete-checker-test.cpp

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179426 91177308-0d34-0410-b5e6-96231b3b80d8
Headers: Add support for ISO9899:2011 rsize_t.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179427 91177308-0d34-0410-b5e6-96231b3b80d8
[analyzer] Enable NewDelete checker if NewDeleteLeaks checker is enabled.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179428 91177308-0d34-0410-b5e6-96231b3b80d8
Headers: Don't try to use RSIZE_MAX unless we are freestanding.
 - We don't want to depend on the platforms stdint.h.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179429 91177308-0d34-0410-b5e6-96231b3b80d8