Function vex_sys::mkIRCAS

pub unsafe extern "C" fn mkIRCAS(
    oldHi: IRTemp, 
    oldLo: IRTemp, 
    end: IREndness, 
    addr: *mut IRExpr, 
    expdHi: *mut IRExpr, 
    expdLo: *mut IRExpr, 
    dataHi: *mut IRExpr, 
    dataLo: *mut IRExpr
) -> *mut IRCAS