InternalAlloc is quite complex and its behavior may depend on the values of
flags. As such, it should not be used while parsing flags.
Sadly, LowLevelAlloc does not support deallocation of memory.
llvm-svn: 226453
The new parser is a lot stricter about syntax, reports unrecognized
flags, and will make it easier to implemented some of the planned features.
llvm-svn: 226169
Alexey Samsonov