On Sat, 1 Nov 2008, Richard Sandiford wrote: > There are two ways we could handle this: > > - Make -mfix-r10000 require -mbranch-likely. (It mustn't _imply_ > -mbranch-likely. It should simply check that -mbranch-likely is > already in effect.) > > - Make -mfix-r10000 insert nops when -mbranch-likely is not in effect. If I recall right, these is something special about the pipeline in this context making the branch-likely instructions the only ones that work. Which would make the option you proposed first the only viable. I am not absolutely sure and I have no reference handy. Perhaps Ralf or someone at linux-mips will know? Maciej
