Fixes PR18985

Patch by Vassil Vassilev!

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Using clang as a cross-compiler with the 'target' option could be confusing
for those inexperienced in the realm of cross compiling.

This patch would allow the use of all these four variants of the target option:
-target <triple>
--target <triple>
-target=<triple>
--target=<triple>

Patch by Gabor Ballabas.

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Saves adding .str() call to any raw_ostream << SmallString usage
and a small step towards making .str() consistent in the ADTs by
removing one of the SmallString::str() use cases, discussion at

http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20141013/240026.html

I'll update the Phabricator patch http://reviews.llvm.org/D6372
for review of the Twine SmallString support, it's more complex
than this one.



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The task region is emmitted in several steps:

Emit a call to kmp_task_t *__kmpc_omp_task_alloc(ident_t *, kmp_int32 gtid, kmp_int32 flags, size_t sizeof_kmp_task_t, size_t sizeof_shareds, kmp_routine_entry_t *task_entry).
Here task_entry is a pointer to the function:
kmp_int32 .omp_task_entry.(kmp_int32 gtid, kmp_task_t *tt) {
    TaskFunction(gtid, tt->part_id, tt->shareds);
      return 0;
}
Copy a list of shared variables to field shareds of the resulting structure kmp_task_t returned by the previous call (if any).
Copy a pointer to destructions function to field destructions of the resulting structure kmp_task_t.
Emit a call to kmp_int32 __kmpc_omp_task(ident_t *, kmp_int32 gtid, kmp_task_t *new_task), where new_task is a resulting structure from previous items.
Differential Revision: http://reviews.llvm.org/D7560


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[OPENMP] Improved code for generating debug info + generation of all OpenMP regions in termination scope
Patch adds proper generation of debug info for all OpenMP regions. Also, all OpenMP regions are generated in a termination scope, because standard does not allow to throw exceptions out of structured blocks, associated with the OpenMP regions
Differential Revision: http://reviews.llvm.org/D7935


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Revert "[OPENMP] Improved code for generating debug info + generation of all OpenMP regions in termination scope Patch adds proper generation of debug info for all OpenMP regions. Also, all OpenMP regions are generated in a termination scope, because standard does not allow to throw exceptions out of structured blocks, associated with the OpenMP regions Differential Revision: http://reviews.llvm.org/D7935"

This reverts commit r231752.

It was failing to link with cmake:

lib64/libclangCodeGen.a(CGOpenMPRuntime.cpp.o):/home/espindola/llvm/llvm/tools/clang/lib/CodeGen/CGOpenMPRuntime.cpp:function clang::CodeGen::InlinedOpenMPRegionRAII::~InlinedOpenMPRegionRAII(): error: undefined reference to 'clang::CodeGen::EHScopeStack::popTerminate()'
clang-3.7: error: linker command failed with exit code 1 (use -v to see invocation)

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[OPENMP] Improved code for generating debug info + generation of all OpenMP regions in termination scope
Patch adds proper generation of debug info for all OpenMP regions. Also, all OpenMP regions are generated in a termination scope, because standard does not allow to throw exceptions out of structured blocks, associated with the OpenMP regions
Differential Revision: http://reviews.llvm.org/D7935


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actually loading a formerly-canonical declaration.


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From: Mehdi Amini <mehdi.amini@apple.com>

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specification, update all prior declarations if the new one has an explicit
exception specification and the prior ones don't.

Patch by Vassil Vassilev! Some minor tweaking and test case by me.


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move the operator delete updating into a separate update record so we can cope
with updating another module's destructor's operator delete.


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check that private headers are in a list matching the role. (We can't perform
the opposite checks for non-private headers because we infer those.)


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private header within the same module.


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Suppress a couple of tests, clang/test/CodeGen/catch-undef-behavior.c and one, for -Asserts for now. They were introduced in r231711.

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This is a recommit of r231150, reverted in r231409. Turns out
that -fsanitize=shift-base check implementation only works if the
shift exponent is valid, otherwise it contains undefined behavior
itself.

Make sure we check that exponent is valid before we proceed to
check the base. Make sure that we actually report invalid values
of base or exponent if -fsanitize=shift-base or
-fsanitize=shift-exponent is specified, respectively.

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When passing a type with large alignment byval, we were specifying the type's
alignment rather than the alignment that the backend is actually capable of
producing (ABIAlign).

This would be OK (if odd) assuming the backend dealt with it prooperly,
unfortunately it doesn't and trying to pass types with "byval align 16" can
cause it to set fp incorrectly and trash the stack during the prologue. I'll be
fixing that in a separate patch, but Clang should still be emitting IR that's
as close to its intent as possible.

rdar://20059039

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override where at least a declaration of a designated initializer is in a super
class and not necessarily in the current class. rdar://19653785.


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http://reviews.llvm.org/D8146

Patch by Richard Thomson!


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Found by -Wmissing-prototypes.

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NFC.

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NFC.

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NFC.

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NFC.

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I.e.:

  #define A public:

  // The new line before this line would be removed.
  int a;

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This only warns on direct gotos and indirect gotos with a unique label
(`goto *&&label;`).  Jumping out ith a true indirect goto is already an error.

This isn't O(1), but goto statements are less common than continue, break, and
return.  Also, the GetDeepestCommonScope() call in the same function does the
same amount of work, so this isn't worse than what's there in a complexity
sense, and it should be pretty fast in practice.

This is the last piece that was missing in r231623.   


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ParseCompoundStatement() currently never returns StmtError, but if it did,
Sema would keep the __finally scope on its stack indefinitely.  Explicitly
add an error callback that clears it.


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Since continue, break, return are much more common than __finally, this tries
to keep the work for continue, break, return O(1).  Sema keeps a stack of active
__finally scopes (to do this, ActOnSEHFinally() is split into
ActOnStartSEHFinally() and ActOnFinishSEHFinally()), and the various jump
statements then check if the current __finally scope (if present) is deeper
than then destination scope of the jump.

The same warning for goto statements is still missing.

This is the moral equivalent of MSVC's C4532.


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Patch by Richard (legalize at xmission dot com).

Differential Revision: http://reviews.llvm.org/D8155

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Found by msan.

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Type traits are hard.

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We copy them around a lot and skip construction in favor of startToken,
make the default construction trivial to reflect that.

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NFC.

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C++11 finally allows us to use this C99 feature.

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