[Support] Add LLVM_CONSTEXPR.

Marks a decl as constexpr if the compiler supports it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172508 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael J. Spencer 2013-01-15 05:01:39 +00:00
parent 47f3934021
commit b5f8cd5bb0

View File

@ -95,6 +95,12 @@
#define LLVM_OVERRIDE
#endif
#if __has_feature(cxx_constexpr) || defined(__GXX_EXPERIMENTAL_CXX0X__)
# define LLVM_CONSTEXPR constexpr
#else
# define LLVM_CONSTEXPR
#endif
/// LLVM_LIBRARY_VISIBILITY - If a class marked with this attribute is linked
/// into a shared library, then the class should be private to the library and
/// not accessible from outside it. Can also be used to mark variables and