On Monday 04 July 2005 12:41, Balaji S wrote: > _On 04-Jul-2005 15:31, Steven Bosscher san wrote_: > > Add an attribute to those instructions that cannot be in delay slots, > > and change this define_delay to disallow instructions with that attr? > > Any instruction other than jump can be placed in the delay slot. I hope > "!jump" can fulfill this requirement. > > I don't have any idea to identify a part of a VLIW instruction and disallow > it delay slot. I only know that TImode of insn signifies a new cycle start. > please hlep me by giving some pointers.
Ah, I think I misunderstood your problem. So you have a few instructions bundled into a VLIW instruction, and one of the instructions in the bundle is moved into the delay slot, thus breaking your VLIW bundle. Right? That is a much harder problem... I don't think it is really possible with the existing dbr scheduling pass, but maybe someone else knows a trick for this... Gr. Steven
