Yes, but that assumes that the SMALL Memory Model is used.

If Iztok is using a different Memory Model, or has specifically declared his variable as something other than 'data', the generated code may be different.

And, of course, if the variable is something other than a char, DJNZ can't be used...

Anyhow, I think we're agreed on the original point: you cannot force any 'C' compiler to use any specifc machine instruction(s); sure, you can help it by optimising your 'C' source - but you cannot force it.