peephole vs. scheduler

David Edelsohn dje@watson.ibm.com
Tue May 8 06:28:00 GMT 2001


>>>>> dalej  writes:

Dale> I have a case where I'd like to combine two insn's into one late in the 
Dale> game.  I have a nice short define_peephole that does just what I 
Dale> want.[*]

Dale> [*] I tried various combinations of define_insn, define_expand and 
Dale> define_split without success.  Possibly I'm missing something; details 
Dale> available on request [probably Wed.], but they don't affect the main 
Dale> point here.

	If you are considering define_peephole, define_insn, and
define_expand, are you sure that you want a GCC-style peephole and not a
combiner pattern?

David



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