[C++11] Remove LLVM_HAS_CXX11_TYPETRAITS now that it is a constant due

to the build being C++11.

There is clearly still plenty of simplification than can be done here by
using standard type traits instead of rolling our own in many places.

llvm-svn: 202586

2 files changed, 0 insertions, 13 deletions

diff --git a/llvm/include/llvm/Support/Compiler.h b/llvm/include/llvm/Support/Compiler.h
index f87d797ad23..9c7c827d8f6 100644
--- a/llvm/include/llvm/Support/Compiler.h
+++ b/llvm/include/llvm/Support/Compiler.h
@@ -68,17 +68,6 @@
 #define LLVM_HAS_RVALUE_REFERENCE_THIS 0
 #endif
 
-/// \macro LLVM_HAS_CXX11_TYPETRAITS
-/// \brief Does the compiler have the C++11 type traits.
-///
-/// #include <type_traits>
-///
-/// * enable_if
-/// * {true,false}_type
-/// * is_constructible
-/// * etc...
-#define LLVM_HAS_CXX11_TYPETRAITS 1
-
 /// \macro LLVM_HAS_CXX11_STDLIB
 /// \brief Does the compiler have the C++11 standard library.
 ///
diff --git a/llvm/include/llvm/Support/ErrorOr.h b/llvm/include/llvm/Support/ErrorOr.h
index 6033d8a97e5..3054b213593 100644
--- a/llvm/include/llvm/Support/ErrorOr.h
+++ b/llvm/include/llvm/Support/ErrorOr.h
@@ -21,9 +21,7 @@
 #include "llvm/Support/system_error.h"
 #include "llvm/Support/type_traits.h"
 #include <cassert>
-#if LLVM_HAS_CXX11_TYPETRAITS
 #include <type_traits>
-#endif
 
 namespace llvm {
 template<class T, class V>