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Re: RFA: enable LRA for rs6000 [patch for WRF]

On Thu, Apr 18, 2013 at 04:44:21PM -0400, Vladimir Makarov wrote:
> LRA can fix the wrong address but secondary reload  was done before
> processing addresses.  It could be fixed in rs6000.c code too but it
> is complicated and I found a better (and i think more right)
> solution by moving secondary reload generation after address
> processing.

I tended to think secondary_reload should always happen after address

> Here is the patch for your branch (patch for trunk is a bit
> different as some changes in affected code were done on trunk).
> 2013-04-18  Vladimir Makarov  <>
>         * lra-constraints.c (check_and_process_move): Move code for move
>         cost check to simple_move_p.  Remove equiv_substitution.
>         (simple_move_p): New function.
>         (curr_insn_transform): Use the new function.  Move call of
>         check_and_process_move after operand equiv substitution and
>         address process.
> Tomorrow I am going to look at SPEC2006 dealII crash for 32-bit mode.

Thanks for the patch.  Unfortunately I just updated the branch to be merged up
to 198065.  So if you could send me a patch against current trunk, or update
the branch (branches/ibm/meissner-lra) and check it into the branch, it would
be appreciated.

Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460, USA
email:, phone: +1 (978) 899-4797

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