New LLVM Debugger Subproject Already Faster Than GDB

kthreadd writes "The LLVM project is now working on a debugger called LLDB that's already faster than GDB and could be a possible alternative in the future for C, C++, and Objective-C developers. With the ongoing success of Clang and other LLVM subprojects, are the days of GNU as the mainstream free and open development toolchain passé?" LLVM stands for Low Level Virtual Machine; Wikipedia as usual has a good explanation of the parent project.

Grammar

[Anonymous Coward]

is the days of GNU as the mainstream free and open development toolchain passé?

Does I not understand some grammatical concept here?