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# ac77dcd7 09-Nov-2018 Aaron Ballman <aaron@aaronballman.com>

Allow a double-underscore spelling of Clang attributes using double square bracket syntax.

This matches a similar behavior with GCC accepting [[gnu::__attr__]] as a alias for [[gnu::attr]] in that c

Allow a double-underscore spelling of Clang attributes using double square bracket syntax.

This matches a similar behavior with GCC accepting [[gnu::__attr__]] as a alias for [[gnu::attr]] in that clang attributes can now be spelled with two leading and trailing underscores.

I had always intended for this to work, but missed the critical bit. We already had an existing test in test/Preprocessor/has_attribute.cpp for [[clang::__fallthrough__]] but using that spelling would still give an "unknown attribute" diagnostic.

llvm-svn: 346547

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# c44c1742 09-Nov-2018 Aaron Ballman <aaron@aaronballman.com>

Introduce the _Clang scoped attribute token.

Currently, we only accept clang as the scoped attribute identifier for double square bracket attributes provided by Clang, but this has the potential to

Introduce the _Clang scoped attribute token.

Currently, we only accept clang as the scoped attribute identifier for double square bracket attributes provided by Clang, but this has the potential to conflict with user-defined macros. To help alleviate these concerns, this introduces the _Clang scoped attribute identifier as an alias for clang. It also introduces a warning with a fixit on the off chance someone attempts to use __clang__ as the scoped attribute (which is a predefined compiler identification macro).

llvm-svn: 346521

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Revision tags: llvmorg-7.0.1-rc2, llvmorg-7.0.1-rc1, llvmorg-7.0.0, llvmorg-7.0.0-rc3, llvmorg-7.0.0-rc2, llvmorg-7.0.0-rc1, llvmorg-6.0.1, llvmorg-6.0.1-rc3, llvmorg-6.0.1-rc2, llvmorg-6.0.1-rc1, llvmorg-5.0.2, llvmorg-5.0.2-rc2, llvmorg-5.0.2-rc1, llvmorg-6.0.0, llvmorg-6.0.0-rc3, llvmorg-6.0.0-rc2, llvmorg-6.0.0-rc1, llvmorg-5.0.1, llvmorg-5.0.1-rc3, llvmorg-5.0.1-rc2, llvmorg-5.0.1-rc1, llvmorg-5.0.0, llvmorg-5.0.0-rc5, llvmorg-5.0.0-rc4, llvmorg-5.0.0-rc3, llvmorg-5.0.0-rc2, llvmorg-5.0.0-rc1, llvmorg-4.0.1, llvmorg-4.0.1-rc3, llvmorg-4.0.1-rc2, llvmorg-4.0.1-rc1, llvmorg-4.0.0, llvmorg-4.0.0-rc4, llvmorg-4.0.0-rc3, llvmorg-4.0.0-rc2, llvmorg-4.0.0-rc1, llvmorg-3.9.1, llvmorg-3.9.1-rc3, llvmorg-3.9.1-rc2, llvmorg-3.9.1-rc1, llvmorg-3.9.0, llvmorg-3.9.0-rc3, llvmorg-3.9.0-rc2, llvmorg-3.9.0-rc1, llvmorg-3.8.1, llvmorg-3.8.1-rc1, llvmorg-3.8.0, llvmorg-3.8.0-rc3, llvmorg-3.8.0-rc2, llvmorg-3.8.0-rc1, llvmorg-3.7.1, llvmorg-3.7.1-rc2, llvmorg-3.7.1-rc1, llvmorg-3.7.0, llvmorg-3.7.0-rc4, llvmorg-3.7.0-rc3, studio-1.4, llvmorg-3.7.0-rc2, llvmorg-3.7.0-rc1, llvmorg-3.6.2, llvmorg-3.6.2-rc1, llvmorg-3.6.1, llvmorg-3.6.1-rc1, llvmorg-3.5.2, llvmorg-3.5.2-rc1, llvmorg-3.6.0, llvmorg-3.6.0-rc4, llvmorg-3.6.0-rc3, llvmorg-3.6.0-rc2, llvmorg-3.6.0-rc1
# 080b1f30 13-Jan-2015 Paul Robinson <paul_robinson@playstation.sony.com>

When attribute 'optnone' appears on the same declaration with a
conflicting attribute, warn about the conflict and pick a "winning"
attribute to preserve, instead of emitting an error. This matches

When attribute 'optnone' appears on the same declaration with a
conflicting attribute, warn about the conflict and pick a "winning"
attribute to preserve, instead of emitting an error. This matches the
behavior when the conflicting attributes are on different declarations.

Along the way I discovered that conflicts involving __forceinline were
reported as 'always_inline' (alternate spelling, same attribute) so
fixed that up to report the attribute as spelled in the source.

llvm-svn: 225813

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Revision tags: llvmorg-3.5.1, llvmorg-3.5.1-rc2
# 30e41fb4 15-Dec-2014 Paul Robinson <paul_robinson@playstation.sony.com>

Warn when attribute 'optnone' conflicts with attributes on a
different declaration of the same function.

llvm-svn: 224256


# aae2fba5 10-Dec-2014 Paul Robinson <paul_robinson@playstation.sony.com>

Diagnose attributes 'optnone' and 'minsize' on the same declaration.

Eventually we'll diagnose them on different declarations, but let's
get this part out of the way first.

llvm-svn: 223985


# 621b6d3b 10-Dec-2014 Paul Robinson <paul_robinson@playstation.sony.com>

Revert r223980 as it had wrong commit message.

llvm-svn: 223984


# 29368514 10-Dec-2014 Paul Robinson <paul_robinson@playstation.sony.com>

Rename a couple of preprocessor symbols to be more descriptive. NFC.
Review feedback from recent changes to GetSVN.cmake.

llvm-svn: 223980


Revision tags: llvmorg-3.5.1-rc1, llvmorg-3.5.0, llvmorg-3.5.0-rc4, llvmorg-3.5.0-rc3, llvmorg-3.5.0-rc2, llvmorg-3.5.0-rc1, llvmorg-3.4.2, llvmorg-3.4.2-rc1, llvmorg-3.4.1, llvmorg-3.4.1-rc2, llvmorg-3.4.1-rc1
# f0674350 31-Mar-2014 Paul Robinson <paul_robinson@playstation.sony.com>

Implement the 'optnone' attribute, which suppresses most optimizations
on a function.

llvm-svn: 205255