/ARCHITECTURE=options
     /ARCHITECTURE=GENERIC (D)

 Determines the x86-64 processor instruction set to be used by the
 compiler.  The /ARCHITECTURE qualifier uses the same keyword options
 (keywords) as the /OPTIMIZE=TUNE qualifier.

 Where the /OPTIMIZE=TUNE qualifier is primarily used by certain
 higher-level optimizations for instruction scheduling purposes,
 the /ARCHITECTURE qualifier determines the type of code instructions
 generated for the program unit being compiled.

 The following /ARCHITECTURE option is supported:

     Currently ignored for x86-64 systems but we expect to provide
     options to pass along to the LLVM code generator to select
     specific machine attributes.