This patch introduces the -fwhole-program-vtables flag, which enables the
whole-program vtable optimization feature (D16795) in Clang.

Differential Revision: http://reviews.llvm.org/D16821

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It turns out we don't have CRC after all. Who knew?

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This is mainly for extensibility. Note that fragile category metadata,
metadata for classes and protocols all have a size field.

Initial patch was provided by Greg Parker.

rdar://problem/24804226


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Differential Revision: http://reviews.llvm.org/D17539


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Calls to the terminate handler must be annotated within the exception
region they are within.

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Summary:
Add Sema checks for opencl 2.0 new features: Block.
This patch is partitioned from http://reviews.llvm.org/D16047

Reviewers: Anastasia

Subscribers: pekka.jaaskelainen, cfe-commits

Differential Revision: http://reviews.llvm.org/D17436

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Fixes PR11517 for SPARC.

On most targets, clang lowers va_arg itself, eschewing the use of the
llvm vaarg instruction. This is necessary (at least for now) as the type
argument to the vaarg instruction cannot represent all the ABI
information that is needed to support complex calling conventions.

However, on targets with a simpler varrags ABIs, the LLVM instruction
can work just fine, and clang can simply lower to it. Unfortunately,
even on such targets, vaarg with a struct argument would fail, because
the default lowering to vaarg was naive: it didn't take into account the
ABI attribute computed by classifyArgumentType. In particular, for the
DefaultABIInfo, structs are supposed to be passed indirectly and so
llvm's vaarg instruction should be emitted with a pointer argument.

Now, vaarg instruction emission is able to use computed ABIArgInfo for
the provided argument type, which allows the default ABI support to work
for structs too.

I haven't touched the EmitVAArg implementation for PPC32_SVR4 or XCore,
although I believe both are now redundant, and could be switched over to
use the default implementation as well.

Differential Revision: http://reviews.llvm.org/D16154

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PR24667: fix quadratic runtime if textually-included modular headers define large numbers of macros.


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When looking up the 'self' decl in block captures, make sure to find the actual
self declaration even when the block captures a local variable named 'self'.

rdar://problem/24751280

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This change migrates clang-format to add_clang_tool which makes a component-based install target. To support component-based installation the extra installed scripts all need to have the "clang-format" component too.

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Also introduce inputs() that reutnrs an llvm::iterator_range.
Iterating over A->inputs() is much less mysterious than
iterating over *A.  No intended behavior change.


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Remove an unnecessary workaround introduced in r259975. (NFC)

Now that LLVM r259973 allows replacing a temporary type with another
temporary we can rely on the original implementation.

It is possible for enums to be created as part of
their own declcontext. In this case a FwdDecl will be created
twice. This doesn't cause a problem because both FwdDecls are
entered into the ReplaceMap: finalize() will replace the first
FwdDecl with the second and then replace the second with
complete type.

Thanks to echristo for pointing this out.


# Conflicts:
#	lib/CodeGen/CGDebugInfo.cpp

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r261634 and r261633 seems to have caused PR26715. r261657 depends on the former two.

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Amends r252104 to evaluate the controlling expression in an unevaluated context. This eliminates false-positive diagnostics about null pointer dereferences (etc) in the controlling expression.

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Now that LLVM r259973 allows replacing a temporary type with another
temporary we can rely on the original implementation.

It is possible for enums to be created as part of
their own declcontext. In this case a FwdDecl will be created
twice. This doesn't cause a problem because both FwdDecls are
entered into the ReplaceMap: finalize() will replace the first
FwdDecl with the second and then replace the second with
complete type.

Thanks to echristo for pointing this out.

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This reverts commit r261551 due to failing tests in windows bots:

http://lab.llvm.org:8011/builders/clang-x64-ninja-win7/builds/10054

Failing Tests (4):
    Clang-Unit :: Basic/BasicTests.exe/VFSFromYAMLTest.CaseInsensitive
    Clang-Unit :: Basic/BasicTests.exe/VFSFromYAMLTest.DirectoryIteration
    Clang-Unit :: Basic/BasicTests.exe/VFSFromYAMLTest.MappedFiles
    Clang-Unit :: Basic/BasicTests.exe/VFSFromYAMLTest.UseExternalName

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Use uniform style for inline code blocks, specify language for YAML code blocks,
various formatting fixes etc.

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Differential Revision: http://reviews.llvm.org/D17512



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Adding closer to the end of macro }->}) 

Differential Revision: http://reviews.llvm.org/D17506


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Differential Revision: http://reviews.llvm.org/D17506


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Differential Revision: http://reviews.llvm.org/D15977

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This patch is intended to improve pointer arithmetic checker.
From now on it only warns when the pointer arithmetic is likely to cause an
error. For example when the pointer points to a single object, or an array of
derived types.

Differential Revision: http://reviews.llvm.org/D14203


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Fixing a crash caused by trying to merge a single-line asm statement with an asm block that follows it, e.g:
asm int 4
asm {
  int 5
}

Now, only adjacent single-line asm statements that are not surrounded by braces will be merged into one asm call.

Differential Revision: http://reviews.llvm.org/D17496



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Revert "[VFS] Add 'overlay-relative' field to YAML files" and "[VFS] Fix call to getVFSFromYAML in unittests"

This reverts commit r261552 and r261556 because of failing unittests on
windows:

Failing Tests (4):
    Clang-Unit :: Basic/BasicTests.exe/VFSFromYAMLTest.CaseInsensitive
    Clang-Unit :: Basic/BasicTests.exe/VFSFromYAMLTest.DirectoryIteration
    Clang-Unit :: Basic/BasicTests.exe/VFSFromYAMLTest.MappedFiles
    Clang-Unit :: Basic/BasicTests.exe/VFSFromYAMLTest.UseExternalName

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Change getString() to return Optional<StringRef>, and change
lookupFilename() to return an empty string if either one of the prefix
and suffix can't be found.

This is a more robust follow-up to r261461, but it's still not entirely
satisfactory.  Ideally we'd report that the header map is corrupt;
perhaps something for a follow-up.

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Switch to using `isPowerOf2_32()` to check whether the buckets are a
power of two, and as a side benefit reject loading a header map with no
buckets.  This is a follow-up to r261448.

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Summary: Add matcher hasAnyName as an optimization over anyOf(hasName(),...)

Reviewers: alexfh

Subscribers: klimek, cfe-commits

Differential Revision: http://reviews.llvm.org/D17163

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style.

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This uses the general emitVoidPtrVAArg lowering logic for everything, since
this supports all types, and we don't have any special requirements.


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Follow up from r261552

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