Previously, these were always included -- after this change, you have to
 #include <new>, which is consistent with how things ought to work.

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This is consistent with the rest of our internal headers.

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Summary:
The matcher
varDecl(hasDescendant(
    callExpr(hasDeclaration(functionDecl(unless(isNoThrow()))))))
didn't match calls from default arguments because the expression
for a CXXDefaultArgExpr was not visited.

Reviewers: klimek, jdennett, alexfh, aaron.ballman

Subscribers: aaron.ballman, cfe-commits

Differential Revision: https://reviews.llvm.org/D25992

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This patch corresponds to review https://reviews.llvm.org/D25956.
Committing on behalf of Zaara Syeda.


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This patch corresponds to review https://reviews.llvm.org/D25906.
Committing on behalf of Tony Jiang.



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Patch by Laurent Morichetti.

Differential Revision: https://reviews.llvm.org/D25920

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These cache file are provided as an example of how to set up simple multi-stage CMake builds. I have a batch of documentation updates for LLVM.org which reference these files.

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While in the area, also change some unsigned variables to size_t, and
introduce an LLVM_FALLTHROUGH instead of a comment stating that.

Differential Revision: http://reviews.llvm.org/D25982


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Extend lifetime of ExceptionTypeStorage, as it is referenced by
CanonicalEPI and used outside the block (ExceptionSpec.Exceptions is an
ArrayRef)

Patch by Sam McCall!

Differential Revision: https://reviews.llvm.org/D25983

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Differential Revision: http://reviews.llvm.org/D25981


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If two modules contain duplicate class definitions the lookup result can contain
more than 2 elements. Sift the lookup results until we find a field decl.

It is not necessary to do ODR checks in place as they done elsewhere.

This should fix issues when compiling with libstdc++ 5.2 and 6.2.

Patch developed in collaboration with Richard Smith!


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All values are returned by a method as size_t, and subsequently passed
to functions taking a size_t, or used where a size_t is also valid.
Better still, two loops (which had an unsigned), can be replaced by
a range-based for loop.

Differential Revision: http://reviews.llvm.org/D25939


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NFC

Differential Revision: http://reviews.llvm.org/D25938


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Summary:
Current generation of lifetime intrinsics does not handle cases like:

```
  {
    char x;
  l1:
    bar(&x, 1);
  }
  goto l1;

```
We will get code like this:

```
  %x = alloca i8, align 1
  call void @llvm.lifetime.start(i64 1, i8* nonnull %x)
  br label %l1
l1:
  %call = call i32 @bar(i8* nonnull %x, i32 1)
  call void @llvm.lifetime.end(i64 1, i8* nonnull %x)
  br label %l1
```

So the second time bar was called for x which is marked as dead.
Lifetime markers here are misleading so it's better to remove them at all.
This type of bypasses are rare, e.g. code detects just 8 functions building
clang (2329 targets).

PR28267

Reviewers: eugenis

Subscribers: beanz, mgorny, cfe-commits

Differential Revision: https://reviews.llvm.org/D24693

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Summary: The preserved input should be the first argument and the vector inputs should be in the same order as the intrinsics it is used to implement.

Reviewers: igorb, delena

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D25902

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Not all echo commands support "-e".

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class template specialization and that specialization has attributes.


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Summary: rsmith

Differential Revision: https://reviews.llvm.org/D25665

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Summary: D24693 will need access to it from other places

Reviewers: eugenis

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D24695

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headers. We previously got this check backwards and treated the wrapper header
as being textual.

This is important because our wrapper headers sometimes inject macros into the
system headers that they #include_next, and sometimes replace them entirely.


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This has the following ABI impact:

 1) Functions whose parameter or return types are non-throwing function pointer
    types have different manglings in c++1z mode from prior modes. This is
    necessary because c++1z permits overloading on the noexceptness of function
    pointer parameter types. A warning is issued for cases that will change
    manglings in c++1z mode.

 2) Functions whose parameter or return types contain instantiation-dependent
    exception specifications change manglings in all modes. This is necessary
    to support overloading on / SFINAE in these exception specifications, which
    a careful reading of the standard indicates has essentially always been
    permitted.

Note that, in order to be affected by these changes, the code in question must
specify an exception specification on a function pointer/reference type that is
written syntactically within the declaration of another function. Such
declarations are very rare, and I have so far been unable to find any code
that would be affected by this. (Note that such things will probably become
more common in C++17, since it's a lot easier to get a noexcept function type
as a function parameter / return type there.)

This change does not affect the set of symbols produced by a build of clang,
libc++, or libc++abi.


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Summary:
Fixes PR28281.

MSVC lists indirect virtual base classes in the field list of a class.
This change makes Clang emit the information necessary for LLVM to
emit such records.

Reviewers: rnk, ruiu, zturner

Differential Revision: https://reviews.llvm.org/D25579


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Summary:
This is only forced on if there is no non-Cortex-A53 CPU specified as
well. Android's platform and NDK builds need to assume that the code can
be run on Cortex-A53 devices, so we always enable the fix unless we know
specifically that the code is only running on a different kind of CPU.

Reviewers: cfe-commits

Subscribers: aemerson, rengolin, tberghammer, pirama, danalbert

Differential Revision: https://reviews.llvm.org/D25761

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The section names currently are MachO specific.  Only set the section on the
variables if the file format is MachO.

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Differential Revision: https://reviews.llvm.org/D25954

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- Add entries for protocols on categories
- Add relation between categories and class they extend
- Add relation between getters/setters and their corresponding property
- Use category name location as the location of category decls/defs if it has one

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The problem with the original commit was that some of Apple's headers depended
on an incorrect behaviour, this commit adds a temporary workaround until those
headers are fixed.

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Disable the OpenSUSE rules for OpenSUSE versions older than 11 as they
are incompatible with the old binutils on that distribution.

Differential Revision: https://reviews.llvm.org/D24954

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Support using gcc-config to determine the correct GCC toolchain location
on Gentoo. In order to do that, attempt to read gcc-config configuration
form [[sysroot]]/etc/env.d/gcc, if no custom toolchain location is
provided.

Differential Revision: https://reviews.llvm.org/D25661

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This allows for the coalescing of the protocol declarations.  When the protocols
are declared in headers, multiple definitions of the protocol would be emitted.
Marking them as common data indicates that any one can be selected.

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LLVM_ATTRIBUTE_UNUSED doesn't work for non-gcc style compilers.

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Patch by Sam McCall, test case by me.

Differential Revision: https://reviews.llvm.org/D25936

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For the purpose of highlighting in an IDE.


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Warnings generated by -Wdocumentation-unknown-command did only have a
start location, not a full source range. This resulted in only the
"carret" being show in messages, and IDEs highlighting only the single
initial character.



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[X86][AVX512][Clang][Intrinsics][reduce] Adding missing reduce (Operators: +,*,&&,||) intrinsics to Clang
 
Committed after LGTM and check-all

 
Vector-reduction arithmetic accepts vectors as inputs and produces scalars as outputs.
This class of vector operation forms the basis of many scientific computations.
In vector-reduction arithmetic, the evaluation off is independent of the order of the input elements of V.
 
Used bisection method. At each step, we partition the vector with previous
step in half, and the operation is performed on its two halves.
This takes log2(n) steps where n is the number of elements in the vector.
 
Reviwer: 1. igorb
         2. craig.topper    
Differential Revision: https://reviews.llvm.org/D25527




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