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Re: reload and asms
Jim Wilson wrote:
Nathan Sidwell wrote:
It is generating false positives, because at this point the source
operands
of the P insns are still pseudos, hence constrain_operands (1), fails,
If you look at recog.c, you will see that there is special code to
accept psuedos during reload. That is so that this piece of code will
work. If your target has special constraint letters, it is possible
that these letters aren't accepting pseudos during reload as they should.
I have no special constraints in this case.
mov insns are special. You can't have two different patterns that match
a movsi pattern for instance. You must have only one that handles all
cases. Reload will not work otherwise. It relies on this principle in
order to work.
bleah. This requirement is not obvious from md.texi. (Some other special
requirements are, but I did not deduce this one.)
nathan
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