Phabricator revision: http://reviews.llvm.org/D6507

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Modify __has_attribute so that it only looks for GNU-style attributes. Removes the ability to look for generic attributes and keywords via this macro, which has the potential to be a breaking change. However, since there is __has_cpp_attribute and __has_declspec_attribute, and given the limited usefulness of querying a generic attribute name regardless of syntax, this seems like the correct path forward.

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Added a new preprocessor macro: __has_declspec_attribute. This can be used as a way to determine whether Clang supports a __declspec spelling for a given attribute, similar to  __has_attribute and __has_cpp_attribute.

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This fixes llvm.org/PR21756.

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Clang attempted to replicate a GCC bug: -fobjc-exceptions forces
-fexceptions to be enabled.  However, this has unintended effects and
other awkard side effects that Clang doesn't "correctly" ape (e.g. it's
impossible to turn off C++ exceptions in ObjC++ mode).

Instead, -f[no]objc-exceptions and -f[no]cxx-exceptions now have an
identical relationship with -f[no]exceptions.

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No functionality change is intended, just a cleanup of the logic clang
uses to determine what -fexceptions/-fno-exceptions ends up doing.

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Adds generation of call to "i32 kmpc_cancel_barrier(ident_t *, i32)" libcall for explicitly specified barriers (OMP_IDENT_BARRIER_EXPL flag is added to "flags" field of "ident_t" structure).
Also this patch replaces all calls to "kmpc_barrier" function by calls of "__kmpc_cancel_barrier" function which provides additional functionality for OpenMP 4.0.
Also, library specific enum OpenMPLocationFlags moved to private section of CGOpenMPRuntime class to make it more independent from library implementation.
Differential Revision: http://reviews.llvm.org/D6447


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the root of the module and use paths relative to that directory wherever
possible. This is a step towards allowing explicit modules to be relocated
without being rebuilt, which is important for some kinds of distributed builds,
for good paths in diagnostics, and for appropriate .d output.


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is for each machine. Fix up darwin tests that were testing for
aapcs on armv7-ios when the actual ABI is apcs.

Should be no user visible change without -cc1.

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against an enum.

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MSVC parses and ignores these with a warning.

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The __unaligned keyword can appear after a struct definition:

  struct foo {...} __unaligned *x;

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This is a performance hint that can be applied to kernels
to attempt to limit the number of used registers.

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These are often used for enums which apparently are easier to read if
formatted with one element per line.

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should indicate a c++ parameter pack not a c-variadic.

int i = [](auto...) { return 0; }(); // OK now.



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Before:
  import::SomeFunction(aaaaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

After:
  import::SomeFunction(aaaaaaaaaaaaaaaaaaaaaaaaaaa,
                       aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

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Patch adds 2 library functions to OpenMPRuntime class - int32 kmpc_master(ident_t *, int32 gtid) and void kmpc_end_master(ident_t *, int32 gtid);
For 'omp master' directive the next code is generated:

if (__kmpc_master(loc, gtid)) {
    <Associated structured block>;
      __kmpc_end_master(log, gtid);
}

Differential Revision: http://reviews.llvm.org/D6473


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http://llvm.org/bugs/show_bug.cgi?id=21555

Currently, kernel argument metadata is omitted unless the
"-cl-kernel-arg-info" option is specified. But the SPIR 1.2 spec
requires that all metadata except kernel_arg_name should always be
emitted, and kernel_arg_name is only emitted when
"-cl-kernel-arg-info" is specified.

Patch ported by Ryan Burn from the Khronos SPIR generator.
https://github.com/KhronosGroup/SPIR



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Create a helper function to construct a value for the ARM hint intrinsic
rather than inling the construction.  In order to avoid the use of the sentinel
value, inline the use of intrinsic instruction retrieval.  NFC.

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The regex should not accept an empty version number.

The previous attempt at r223106 failed, and the build was still erroring:

  CMake Error at tools/clang/CMakeLists.txt:269 (string):
    string sub-command REGEX, mode REPLACE regex "[^0-9]*([0-9.]*).*" matched
    an empty string.

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Use the same approach as _umul128, but just return the high half.

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Summary:
Allow CUDA host device functions with two code paths using __CUDA_ARCH__
to differentiate between code path being compiled.

For example:
  __host__ __device__ void host_device_function(void) {
  #ifdef __CUDA_ARCH__
    device_only_function();
  #else
    host_only_function();
  #endif
  }

Patch by Jacques Pienaar.

Reviewed By: rnk

Differential Revision: http://reviews.llvm.org/D6457

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We currently use i32 (...)** as the type of the vptr field in the LLVM
struct type. LLVM's GlobalOpt prefers any bitcasts to be on the side of
the data being stored rather than on the pointer being stored to.

Reviewers: majnemer

Differential Revision: http://reviews.llvm.org/D5916

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_Generic expression are unevaluated.


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Reviewers: klimek

Reviewed By: klimek

Subscribers: klimek, cfe-commits

Differential Revision: http://reviews.llvm.org/D6505

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Before:
  return (a > b
          // comment1
      // comment2
      || c);

After:
  return (a > b
      // comment1
      // comment2
      || c);

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Uncovered by a Java test case:

Before:
  public some.package.Type someFunction( // comment
      int parameter) {}

After:
  public some.package.Type someFunction( // comment
                          int parameter) {}

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In many Linux environments (and similar), just-built applications won't run
correctly without making use of the current LD_LIBRARY_PATH environmental
variable in order to find dynamic libraries. Propagate it through the 'env'
command (hopefully this works on all platforms).

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