changes the calling convention in the output file; therefore, it is only useful if you compile all
of a program with this option. In particular, you need to compile
, the library that comes with GCC, with
in order for this to work.
‘ mcm ’ is a synonym of ‘ gr5 ’ present for backward compatibility.
By default (unless configured otherwise), GCC generates code for the GR5 variant of the Visium architecture.
, GCC generates code for the GR6 variant of the Visium architecture. The only difference from GR5 code is that the compiler will generate block move instructions.