MachO: use *-*-*-macho for MachO embedded targets.

Previously we had bodged together some hacks mapping MachO embedded
targets (i.e. mainly ARM v6M and v7M) to the "*-*-darwin-eabi" triple.
This is incorrect in both details (they don't run Darwin and they're
not EABI in any real sense).

This commit appropriates the existing "MachO" environment for the
purpose instead.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199367 91177308-0d34-0410-b5e6-96231b3b80d8
clang-format: Enable formatting of lambdas with explicit return type.

So clang-format can now format:

  int c = []()->int { return 2; }();
  int c = []()->vector<int> { return { 2 }; }();

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199368 91177308-0d34-0410-b5e6-96231b3b80d8
[asan] Remove -fsanitize-address-zero-base-shadow command line
flag from clang, and disable zero-base shadow support on all platforms
where it is not the default behavior.

- It is completely unused, as far as we know.
- It is ABI-incompatible with non-zero-base shadow, which means all
objects in a process must be built with the same setting. Failing to
do so results in a segmentation fault at runtime.
- It introduces a backward dependency of compiler-rt on user code,
which is uncommon and complicates testing.

This is the Clang part of a larger change.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199372 91177308-0d34-0410-b5e6-96231b3b80d8
Sema: Fix crash during member pointer conversion involving incomplete classes

We would attempt to determine the inheritance relationship between
classes 'A' and 'B' during static_cast if we tried to convert from 'int
A::*' to 'int B::*'.  However, the question "does A derive from B" is
not meaningful when 'A' isn't defined.

Handle this case by requiring that 'A' be defined.

This fixes PR18506.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199374 91177308-0d34-0410-b5e6-96231b3b80d8
Distinguish between attributes explicitly written at the request of the user, and attributes implicitly generated to assist in bookkeeping by the compiler. This is done so by table generating a CreateImplicit method for each attribute.

Additionally, remove the optional nature of the spelling list index when creating attributes. This is supported by table generating a Spelling enumeration when the spellings for an attribute are distinct enough to warrant it.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199378 91177308-0d34-0410-b5e6-96231b3b80d8
Giving the asm attribute some keyword spellings based off of GCC's documentation. No functional changes.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199382 91177308-0d34-0410-b5e6-96231b3b80d8
[ASan] Describe online/offline symbolization of reports, mention dsymutil.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199383 91177308-0d34-0410-b5e6-96231b3b80d8
[ASan] Typo fix (symbolize=0 disables online symbolization)


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199385 91177308-0d34-0410-b5e6-96231b3b80d8
Factored some function-like type reasoning out of SemaDeclAttr and onto Decl itself. This allows for more declarative subjects in attribute tablegen where the attribute appertains to something function-like, but not strictly a FunctionDecl.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199387 91177308-0d34-0410-b5e6-96231b3b80d8
[ASan] Enough to have llvm-symbolizer in $PATH.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199388 91177308-0d34-0410-b5e6-96231b3b80d8
Fixing a warning that causes the sanitizer build disliked about mixing && and ||. Since this is generated code, the && has been removed from the expression entirely.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199392 91177308-0d34-0410-b5e6-96231b3b80d8
www: link to the planet clang newsfeed

Also shuffle the Communication section so the bug tracker comes first.

(The sidebar isn't scrollable at the moment so this gives a better chance of
the bug tracker being seen. The links further down are basically invisible --
we should look into that.)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199398 91177308-0d34-0410-b5e6-96231b3b80d8
SPARCv9 implements long double as an IEEE quad.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199399 91177308-0d34-0410-b5e6-96231b3b80d8
www: update the "Follow what's going on" section too

Includes some style tweaks and removes the tautological observation that "Clang
is still under heavy development" -- it hopefully always will be.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199401 91177308-0d34-0410-b5e6-96231b3b80d8