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List:       gcc
Subject:    Re: REGISTER_CONSTRAINTS
From:       Jeffrey A Law <law () cygnus ! com>
Date:       1999-09-29 16:58:53
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  In message <Pine.LNX.4.10.9909291736400.19698-100000@biriani.cygnus.co.uk>you
 write:
  > The documentation states that all ports in existence use register
  > constraints.  This means that we have some code in the compiler which
  > hasn't been compiled and tested in several years.  Could we delete all
  > the [! REGISTER_CONSTRAINTS] code?  How likely is it that a new machine
  > description will use no register constraints, and if it is likely, is the
  > expected compiler performance penalty bad enough to leave the code in
  > there?
I've believed for a while that we should kill the !REGISTER_CONSTRAINTS code.
I don't forsee any port using it, ever.

I vote we kill it.
jeff

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