Clarification for parameters around the assembler

Hello,

I wonder that the word "assembler" seems to appear only once in the
document "http://clang.llvm.org/docs/UsersManual.html#x86"\.
Do you know any more parameters which can be passed to command options
like "-Wa," and "-Xassembler"?

Can the naming convention be influenced for address labels in generated
source code?

Regards,
Markus