This reverts commit 1f502bd9d7d2c1f98ad93a09ffe435e11a95aedd, due to GCC / MinGW's lack of support for C++11 threading. It's possible this will go back in after we come up with a reasonable solution. llvm-svn: 211401
This reverts commit 1f502bd9d7d2c1f98ad93a09ffe435e11a95aedd, due to GCC / MinGW's lack of support for C++11 threading. It's possible this will go back in after we come up with a reasonable solution. llvm-svn: 211401