On Fri, May 20, 2016 at 09:31:15AM +0100, Maciej W. Rozycki wrote: > On Fri, 20 May 2016, James Hogan wrote: > > > > NB `z' here is an "operand code" in GCC-speak. There's a list of the > > > MIPS-specific ones in gcc/config/mips/mips.c above `mips_print_operand'. > > > There are a few generic operand codes as well, most notably `a' to print > > > an address, matching the `p' constraint. I think it would be good to have > > > this all documented in the GCC manual sometime. > > > > Thanks Maciej! To be honest I pretty much guessed at what they were > > called. Good to see 'z' does do what I thought. I couldn't find any > > documentation online for the MIPS specific operand codes, so having them > > documented with GCC would be an excellent idea! > > Yeah, this stuff is a bit obscure (the other one being %-sequences for > the specs) and I always find myself chasing sources when I need any of > this. Frankly by now I have already remembered roughly where to look for. > > Once tracked down however the description within sources is pretty good > actually, so please refer there for the time being. Material for a wiki page? Ralf
