10 Sep
2010
10 Sep
'10
3:11 a.m.
2010/9/10 kyra
I wonder if llvm-gcc supports it's own (gcc) extensions. If it supports then there is no need to stuck in clang right now.
It doesn't support the one I mentioned before of global register variables. I haven't looked for a while so maybe this has changed but llvm-gcc used to incorrectly claim that it supported this feature simply because it supported the syntax. The actual implementation of the extension doesn't work anything like gcc though so most code using the feature will break if compiled with llvm-gcc. Global register variables needs backend support (e.g register allocator) to be implemented so llvm-gcc and clang are in the same boat here, both not supporting it.