diff options
author | Peter Collingbourne <peter@pcc.me.uk> | 2011-10-14 23:44:46 +0000 |
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committer | Peter Collingbourne <peter@pcc.me.uk> | 2011-10-14 23:44:46 +0000 |
commit | fd5f6866a7574f12ecac5cceb7359ff253f83145 (patch) | |
tree | a614c41132f9e92decadfcbe198c64569f64717d | |
parent | 60d222f6f5bbf6613ff0ba5564c466ce15036998 (diff) |
Add c_alignas and cxx_alignas features
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142020 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r-- | docs/LanguageExtensions.html | 14 | ||||
-rw-r--r-- | lib/Lex/PPMacroExpansion.cpp | 3 | ||||
-rw-r--r-- | test/Lexer/has_extension.c | 8 | ||||
-rw-r--r-- | test/Lexer/has_feature_c1x.c | 9 | ||||
-rw-r--r-- | test/Lexer/has_feature_cxx0x.cpp | 9 |
5 files changed, 43 insertions, 0 deletions
diff --git a/docs/LanguageExtensions.html b/docs/LanguageExtensions.html index ef57a659c4..c4a8047f1f 100644 --- a/docs/LanguageExtensions.html +++ b/docs/LanguageExtensions.html @@ -40,6 +40,7 @@ <ul> <li><a href="#cxx_access_control_sfinae">C++0x SFINAE includes access control</a></li> <li><a href="#cxx_alias_templates">C++0x alias templates</a></li> + <li><a href="#cxx_alignas">C++0x alignment specifiers</a></li> <li><a href="#cxx_attributes">C++0x attributes</a></li> <li><a href="#cxx_constexpr">C++0x generalized constant expressions</a></li> <li><a href="#cxx_decltype">C++0x <tt>decltype()</tt></a></li> @@ -71,6 +72,7 @@ </ul></li> <li><a href="#c1x">C1X</a> <ul> + <li><a href="#c_alignas">C1X alignment specifiers</a></li> <li><a href="#c_generic_selections">C1X generic selections</a></li> <li><a href="#c_static_assert">C1X <tt>_Static_assert()</tt></a></li> </ul></li> @@ -476,6 +478,12 @@ with the <tt>-std=c++0x</tt> option when compiling C++ code.</p> <tt>__has_extension(cxx_alias_templates)</tt> to determine if support for C++0x's alias declarations and alias templates is enabled.</p> +<h4 id="cxx_alignas">C++0x alignment specifiers</h4> + +<p>Use <tt>__has_feature(cxx_alignas)</tt> or +<tt>__has_extension(cxx_alignas)</tt> to determine if support for alignment +specifiers using <tt>alignas</tt> is enabled.</p> + <h4 id="cxx_attributes">C++0x attributes</h4> <p>Use <tt>__has_feature(cxx_attributes)</tt> or @@ -635,6 +643,12 @@ for variadic templates is enabled.</p> C1X standard. As a result, all these features are enabled with the <tt>-std=c1x</tt> option when compiling C code.</p> +<h4 id="c_alignas">C1X alignment specifiers</h4> + +<p>Use <tt>__has_feature(c_alignas)</tt> or <tt>__has_extension(c_alignas)</tt> +to determine if support for alignment specifiers using <tt>_Alignas</tt> +is enabled.</p> + <h4 id="c_generic_selections">C1X generic selections</h4> <p>Use <tt>__has_feature(c_generic_selections)</tt> or diff --git a/lib/Lex/PPMacroExpansion.cpp b/lib/Lex/PPMacroExpansion.cpp index 486ffbeb9c..9b20605124 100644 --- a/lib/Lex/PPMacroExpansion.cpp +++ b/lib/Lex/PPMacroExpansion.cpp @@ -609,11 +609,13 @@ static bool HasFeature(const Preprocessor &PP, const IdentifierInfo *II) { .Case("ownership_returns", true) .Case("ownership_takes", true) // C1X features + .Case("c_alignas", LangOpts.C1X) .Case("c_generic_selections", LangOpts.C1X) .Case("c_static_assert", LangOpts.C1X) // C++0x features .Case("cxx_access_control_sfinae", LangOpts.CPlusPlus0x) .Case("cxx_alias_templates", LangOpts.CPlusPlus0x) + .Case("cxx_alignas", LangOpts.CPlusPlus0x) .Case("cxx_attributes", LangOpts.CPlusPlus0x) .Case("cxx_auto_type", LangOpts.CPlusPlus0x) //.Case("cxx_constexpr", false); @@ -702,6 +704,7 @@ static bool HasExtension(const Preprocessor &PP, const IdentifierInfo *II) { // must be less restrictive than HasFeature's. return llvm::StringSwitch<bool>(II->getName()) // C1X features supported by other languages as extensions. + .Case("c_alignas", true) .Case("c_generic_selections", true) .Case("c_static_assert", true) // C++0x features supported by other languages as extensions. diff --git a/test/Lexer/has_extension.c b/test/Lexer/has_extension.c index bc75a4a1c5..4c322c7ce7 100644 --- a/test/Lexer/has_extension.c +++ b/test/Lexer/has_extension.c @@ -28,3 +28,11 @@ int has_c_generic_selections(); int no_c_generic_selections(); #endif +// CHECK-PED-NONE: has_c_alignas +// CHECK-PED-ERR: no_c_alignas +#if __has_extension(c_alignas) +int has_c_alignas(); +#else +int no_c_alignas(); +#endif + diff --git a/test/Lexer/has_feature_c1x.c b/test/Lexer/has_feature_c1x.c index 6c0fb212cc..ca4e9b95ad 100644 --- a/test/Lexer/has_feature_c1x.c +++ b/test/Lexer/has_feature_c1x.c @@ -18,3 +18,12 @@ int no_generic_selections(); // CHECK-1X: has_generic_selections // CHECK-NO-1X: no_generic_selections + +#if __has_feature(c_alignas) +int has_alignas(); +#else +int no_alignas(); +#endif + +// CHECK-1X: has_alignas +// CHECK-NO-1X: no_alignas diff --git a/test/Lexer/has_feature_cxx0x.cpp b/test/Lexer/has_feature_cxx0x.cpp index 5813562de7..f2b4576b57 100644 --- a/test/Lexer/has_feature_cxx0x.cpp +++ b/test/Lexer/has_feature_cxx0x.cpp @@ -173,3 +173,12 @@ int no_implicit_moves(); // CHECK-0X: has_implicit_moves // CHECK-NO-0X: no_implicit_moves + +#if __has_feature(cxx_alignas) +int has_alignas(); +#else +int no_alignas(); +#endif + +// CHECK-0X: has_alignas +// CHECK-NO-0X: no_alignas |