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Re: Question about movM insn restrictions
> > Use a define_expand for movM and have it expand into the appropriate
> > specific pattern(s). Once it's expanded by name, you can use as few
> > or as many patterns as you like, as long as they're unambiguously
> > matchable.
> No! Absolutely not!
> Each insn pattern is reloaded individually. Therefore if you split
> the alternatives across different patterns, you prevent the register
> allocator from doing its job. And can in fact result in reload aborts.
Gak, this sounds bad. I don't recall seeing *that* documented.