Re: [PATCH] RE: ill effect of <register>+<constant>

["Jan Beulich" <jbeulich at novell dot com>]

Committed with your suggested doc change. Jan

>>> Nick Clifton <nickc@redhat.com> 26.09.07 10:07 >>>
Hi Jan,

> Sorry, I keep forgetting about doing this. OK this way?

> +@item md_register_arithmetic
> +@cindex md_register_arithmetic
> +If this macro is defined and evaluates to non-zero, GAS will avoid folding
> +expressions like adding a constant to a register into a register with its
> +number being the sum of the original register's and the constant.

I think that you mean that this new behaviour occurs when the macro evaluates 
to zero, rather than non-zero.  Also an example might help.  eg:

   If this macro is defined and evaluates to zero then GAS will not fold
   expressions that add or subtract a constant from a register to give
   another register.  For example GAS's default behaviour is to fold the
   expression "r8 + 1" into "r9", which is probably not the result
   intended by the programmer.  The default is to allow such folding,
   since this maintains backwards compatibility with earlier releases of
   GAS.


Patch approved, please apply.  Rewording the documentation is left to your 
discretion.

Cheers
   Nick