[C++11] Turn off compiler-based detection of R-value references, relying

on the fact that we now build in C++11 mode with modern compilers. This
should flush out any issues. If the build bots are happy with this, I'll
GC all the code for coping without R-value references.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202574 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Support/Compiler.h b/include/llvm/Support/Compiler.h
index d7621a0513bbd11f68c0686bcc37056db919ebed..e5bde0fae9227c35212250102ac1775552777dca 100644 (file)
--- a/include/llvm/Support/Compiler.h
+++ b/include/llvm/Support/Compiler.h
@@ -56,15 +56,8 @@
 #define LLVM_MSC_PREREQ(version) 0
 #endif
 
-/// \brief Does the compiler support r-value references?
-/// This implies that <utility> provides the one-argument std::move;  it
-/// does not imply the existence of any other C++ library features.
-#if __has_feature(cxx_rvalue_references) || \
-    defined(__GXX_EXPERIMENTAL_CXX0X__) || LLVM_MSC_PREREQ(1600)
+/// \brief We require the host compiler to support r-value references.
 #define LLVM_HAS_RVALUE_REFERENCES 1
-#else
-#define LLVM_HAS_RVALUE_REFERENCES 0
-#endif
 
 /// \brief Does the compiler support r-value reference *this?
 ///