Re: [PATCH] S/390: Optimize atomic_compare_exchange and atomic_compare builtins.

[Dominik Vogt <vogt at linux dot vnet dot ibm dot com>]

On Wed, Apr 05, 2017 at 02:52:00PM +0100, Dominik Vogt wrote:
> On Mon, Mar 27, 2017 at 09:27:35PM +0100, Dominik Vogt wrote:
> > The attached patch optimizes the atomic_exchange and
> > atomic_compare patterns on s390 and s390x (mostly limited to
> > SImode and DImode).  Among general optimizaation, the changes fix
> > most of the problems reported in PR 80080:
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80080
> > 
> > Bootstrapped and regression tested on a zEC12 with s390 and s390x
> > biarch.
> 
> New version attached.

This time it really is.  :-)

> v3:
> 
>   * Remove sne* patterns.
>   * Move alignment check from s390_expand_cs to s390.md.
>   * Use s_operand instead of memory_nosymref_operand.
>   * Remove memory_nosymref_operand.
>   * Allow any CC-mode in cstorecc4 for TARGET_Z196.
>   * Fix EQ with TARGET_Z196 in cstorecc4.
>   * Duplicate CS patterns for CCZmode.
> 
> Bootstrapped and regression tested on a zEC12 with s390 and s390x
> biarch.

Ciao

Dominik ^_^  ^_^

-- 

Dominik Vogt
IBM Germany

Attachment: 0001-v3-ChangeLog
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Attachment: 0001-v3-S-390-Optimize-atomic_compare_exchange-and-atomic_co.patch
Description: Text document