I have a question about the indirectbr instruction. I attempted to use
it according to the example in the Assembly Language Reference manual,
but got an "expected instruction opcode" error. Poking about on the web
I found this document:

which appears to be a Nov 2, 2009 proposal to add indirectbr and
blockaddress() to the IR language. So I suspect indirectbr is not
supported in the llvm-as 2.5 packaged in Fedora 11, is that correct?