On 02/29/2016 03:58 PM, Ulrich Weigand wrote:
> Andreas Krebbel wrote:
>
>> S/390: Use enabled attribute overrides to disable alternatives.
>> S/390: Get rid of Y constraint in rotate patterns.
>> S/390: Get rid of Y constraint in left and logical right shift
>> patterns.
>> S/390: Get
Andreas Krebbel wrote:
> S/390: Use enabled attribute overrides to disable alternatives.
> S/390: Get rid of Y constraint in rotate patterns.
> S/390: Get rid of Y constraint in left and logical right shift
> patterns.
> S/390: Get rid of Y constraint in arithmetic right shift patterns
here is an updated version of the shift count rework in the S/390
backend.
Bootstrapped and regtested on s390 and s390x --with-arch=z196,zEC12,z13
Changes:
- Merge the address reg and immediate alternatives as suggested in:
https://gcc.gnu.org/ml/gcc-patches/2016-02/msg01744.html
- Add constr
This is an updated version of the shift count rework in the S/390
backend. I think I've addressed most of the feedback from Ulrich and
Bernd (gensupport patch).
https://gcc.gnu.org/ml/gcc-patches/2016-01/msg00940.html
Andreas Krebbel (9):
gensupport: Fix define_subst operand renumbering.
S/3
On S/390 we have address style shift counts. So it is possible to
have a reg + const_int shift count. To address this it appeared to be
convenient to really handle this as address operand. For that reason
the "Y" constraint used for shift counts is an extra memory
constraint. Unfortunately a sh
