Re: [PATCH, GCC, stage1] Fallback to copy-prop if constant-prop not possible

[Steven Bosscher <stevenb.gcc@gmail.com>]

On Thu, Apr 16, 2015 at 10:43 AM, Thomas Preud'homme wrote:
> 2015-04-15  Thomas Preud'homme  <thomas.preudhomme@arm.com>
>                         Steven Bosscher <stevenb.gcc@gmail.com>
>
>         * cprop.c (cprop_reg_p): New.
>         (hash_scan_set): Use above function to check if register can be
>         propagated.
>         (find_avail_set): Return up to two sets, one whose source is
>         a register and one whose source is a constant.  Sets are returned in
>         an array passed as parameter rather than as a return value.
>         (cprop_insn): Use a do while loop rather than a goto.  Try each of the
>         sets returned by find_avail_set, starting with the one whose source is
>         a constant. Use cprop_reg_p to check if register can be propagated.
>         (do_local_cprop): Use cprop_reg_p to check if register can be
>         propagated.
>         (implicit_set_cond_p): Likewise.


I wouldn't usually approve patches I've coded bits in myself. But this
post is now 7 days old and it's Thomas' patch for 99%, so...

OK for trunk.

Can you please put steven at gcc.gnu.org for my e-mail address in the
ChangeLog entry?

Ciao!
Steven