Enable -fsanitize=use-after-return by default under -fsanitize=address

Summary:
We enable ASAN's use-after-return instrumentation at compile-time,
but still keep it disabled at run-time.
This enables the users to flip the flag at run-time using environment variable
ASAN_OPTIONS=detect_stack_use_after_return=1 instead of using a separate build.
If UAR detection is disabled at run-time, this extra compile-time instrumentation
costs very small slowdown. On SPEC 2006 14 tests are not affected at all,
4 tests get ~ 1% slowdown and 453.povray gets 4%.

Reviewers: samsonov

Reviewed By: samsonov

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1741

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191186 91177308-0d34-0410-b5e6-96231b3b80d8
ObjectiveC migrator: Infer NS_OPTIONS when if there is at
least one hex enumerator, all others are also
hex enumerator (0 enumerator is excepted). 
// rdar://15044304


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191222 91177308-0d34-0410-b5e6-96231b3b80d8
Revert change accidentally committed in r191150.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191237 91177308-0d34-0410-b5e6-96231b3b80d8
ObjectiveC migrator. When migrating to property declaration
use Cocoa's naming convention for properties of ObjC
object type. // rdar://15045005


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191240 91177308-0d34-0410-b5e6-96231b3b80d8
Add tests on how clang currently handles some unknown options.

This is not to say this is the desired behavior, but it makes sure we notice
if it changes.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191242 91177308-0d34-0410-b5e6-96231b3b80d8
Add _mm_stream_si64 intrinsic.

While I'm here, also fix the alignment computation for the whole family of
intrinsics.

PR17298.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191243 91177308-0d34-0410-b5e6-96231b3b80d8
Fix an incomplete copy and paste in my previous patch.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191245 91177308-0d34-0410-b5e6-96231b3b80d8
Remove extra space.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191246 91177308-0d34-0410-b5e6-96231b3b80d8
Fix argument types of some AVX2 intrinsics.

This fix makes our headers consistent with gcc.

PR17312.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191248 91177308-0d34-0410-b5e6-96231b3b80d8
Produce errors for unknown options.

This doesn't change a lot since clang still thinks it knows all of the
-f*, -m* and -W* options for example.

Other than the options clang explicitly claims to know, this fixes pr9701.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191249 91177308-0d34-0410-b5e6-96231b3b80d8
clang-cl: print diagnostics as "error(clang): foo" in /fallback mode

This solves two problems:

1) MSBuild will not flag the build as unsuccessful just because we print
   an error in the output, since "error(clang):" doesn't seem to match
   the regex it's using.

2) It becomes more clear that the diagnostic is coming from clang as
   supposed to cl.exe.

Differential Revision: http://llvm-reviews.chandlerc.com/D1735

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191250 91177308-0d34-0410-b5e6-96231b3b80d8
Remove unused option.

gcc doesn't support "gcc -m sse" and this was not tested in clang and only
used for link argument on darwin, so this was very likely just a bug.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191251 91177308-0d34-0410-b5e6-96231b3b80d8
Initial support for Neon scalar instructions.

Patch by Ana Pazos.

1.Added support for v1ix and v1fx types.
2.Added Scalar Pairwise Reduce instructions.
3.Added initial implementation of Scalar Arithmetic instructions.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191264 91177308-0d34-0410-b5e6-96231b3b80d8
[OPENMP] Bug fixes and improvements.
1. Fixed constructor of shared clause.
2. Some macros for clauses processing are replaced by private template methods.
3. Additional checks in sema analysis of OpenMP clauses.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191265 91177308-0d34-0410-b5e6-96231b3b80d8
Handle standard libraries that miss out the space when defining the standard
literal operators. Also, for now, allow the proposed C++1y "il", "i", and "if"
suffixes too. (Will revert the latter if LWG decides not to go ahead with that
change after all.)


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191274 91177308-0d34-0410-b5e6-96231b3b80d8
CGBuiltin.cpp: Prune a stray default: label. [-Wcovered-switch-default]

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191277 91177308-0d34-0410-b5e6-96231b3b80d8
Implement restriction that a partial specialization must actually specialize
something, for variable templates.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191278 91177308-0d34-0410-b5e6-96231b3b80d8
Hopefully unbreak bots which are seeing an assert in this test. Temporary, real
fix to come once I've tracked down the problem (which is pre-existing and not
related to the change which introduced this test).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191279 91177308-0d34-0410-b5e6-96231b3b80d8
[Mips] Support -mnan=2008 option. Define "__mips_nan2008" macros and pass
this option to the assembler.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191282 91177308-0d34-0410-b5e6-96231b3b80d8
Module use declarations (II)

Review: http://llvm-reviews.chandlerc.com/D1546.

I have picked up this patch form Lawrence
(http://llvm-reviews.chandlerc.com/D1063) and did a few changes.

From the original change description (updated as appropriate):
This patch adds a check that ensures that modules only use modules they
have so declared. To this end, it adds a statement on intended module
use to the module.map grammar:

  use module-id

A module can then only use headers from other modules if it 'uses' them.
This enforcement is off by default, but may be turned on with the new
option -fmodules-decluse.

When enforcing the module semantics, we also need to consider a source
file part of a module. This is achieved with a compiler option

-fmodule-name=<module-id>.

The compiler at present only applies restrictions to the module directly
being built.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191283 91177308-0d34-0410-b5e6-96231b3b80d8