the ABI spec, this turns out to simplify the code. We still have some annoying
code which mismatches the spec with regard to empty structures.
llvm-svn: 94796
1. Add helper class for sema checks for target attributes
2. Add helper class for codegen of target attributes
As a proof-of-concept - implement msp430's 'interrupt' attribute.
llvm-svn: 93118